Merging upstream version 2.12.1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 5509 insertions, 1440 deletions

diff --git a/configure b/configure
index 689392c..7cd092f 100755
--- a/configure
+++ b/configure
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.71 for man-db 2.12.0.
+# Generated by GNU Autoconf 2.71 for man-db 2.12.1.
 #
 # Report bugs to <cjwatson@debian.org>.
 #
@@ -621,8 +621,8 @@ MAKEFLAGS=
 # Identity of this package.
 PACKAGE_NAME='man-db'
 PACKAGE_TARNAME='man-db'
-PACKAGE_VERSION='2.12.0'
-PACKAGE_STRING='man-db 2.12.0'
+PACKAGE_VERSION='2.12.1'
+PACKAGE_STRING='man-db 2.12.1'
 PACKAGE_BUGREPORT='cjwatson@debian.org'
 PACKAGE_URL=''
 
@@ -743,29 +743,10 @@ GL_COND_OBJ_WINDOWS_ONCE_FALSE
 GL_COND_OBJ_WINDOWS_ONCE_TRUE
 GL_COND_OBJ_WINDOWS_MUTEX_FALSE
 GL_COND_OBJ_WINDOWS_MUTEX_TRUE
-GL_GNULIB_TOWCTRANS
-GL_GNULIB_WCTRANS
-GL_GNULIB_ISWCTYPE
-GL_GNULIB_WCTYPE
-GL_GNULIB_ISWXDIGIT
-GL_GNULIB_ISWDIGIT
-GL_GNULIB_ISWBLANK
-REPLACE_TOWLOWER
-REPLACE_ISWCNTRL
-HAVE_WCTYPE_H
-NEXT_AS_FIRST_DIRECTIVE_WCTYPE_H
-NEXT_WCTYPE_H
-HAVE_ISWCNTRL
-REPLACE_ISWXDIGIT
-REPLACE_ISWDIGIT
-REPLACE_ISWBLANK
-HAVE_WCTRANS_T
-HAVE_WCTYPE_T
-HAVE_ISWBLANK
+GL_COND_OBJ_WCTYPE_FALSE
+GL_COND_OBJ_WCTYPE_TRUE
 GL_COND_OBJ_WCRTOMB_FALSE
 GL_COND_OBJ_WCRTOMB_TRUE
-HAVE_CRTDEFS_H
-HAVE_WINT_T
 NEXT_AS_FIRST_DIRECTIVE_WCHAR_H
 NEXT_WCHAR_H
 HAVE_FEATURES_H
@@ -782,9 +763,188 @@ GL_COND_OBJ_UNLINKAT_FALSE
 GL_COND_OBJ_UNLINKAT_TRUE
 GL_COND_OBJ_UNLINK_FALSE
 GL_COND_OBJ_UNLINK_TRUE
+LIBUNISTRING_UNITYPES_H
+LIBUNISTRING_COMPILE_UNISTR_U32_STRLEN_FALSE
+LIBUNISTRING_COMPILE_UNISTR_U32_STRLEN_TRUE
+LIBUNISTRING_COMPILE_UNISTR_U32_STRCAT_FALSE
+LIBUNISTRING_COMPILE_UNISTR_U32_STRCAT_TRUE
+LIBUNISTRING_COMPILE_UNISTR_U32_PCPY_FALSE
+LIBUNISTRING_COMPILE_UNISTR_U32_PCPY_TRUE
+LIBUNISTRING_COMPILE_UNISTR_U32_CPY_FALSE
+LIBUNISTRING_COMPILE_UNISTR_U32_CPY_TRUE
+LIBUNISTRING_COMPILE_UNISTR_U32_CHR_FALSE
+LIBUNISTRING_COMPILE_UNISTR_U32_CHR_TRUE
+LIBUNISTRING_UNISTR_H
 HAVE_UNISTD_H
 NEXT_AS_FIRST_DIRECTIVE_UNISTD_H
 NEXT_UNISTD_H
+GL_GNULIB_UNINORM_NFKC_DLL_VARIABLE
+GL_GNULIB_UNINORM_NFKD_DLL_VARIABLE
+GL_GNULIB_UNINORM_NFC_DLL_VARIABLE
+GL_GNULIB_UNINORM_NFD_DLL_VARIABLE
+LIBUNISTRING_UNINORM_H
+LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_XDIGIT_FALSE
+LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_XDIGIT_TRUE
+LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_UPPER_FALSE
+LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_UPPER_TRUE
+LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_SPACE_FALSE
+LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_SPACE_TRUE
+LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_PUNCT_FALSE
+LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_PUNCT_TRUE
+LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_PRINT_FALSE
+LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_PRINT_TRUE
+LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_LOWER_FALSE
+LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_LOWER_TRUE
+LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_GRAPH_FALSE
+LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_GRAPH_TRUE
+LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_DIGIT_FALSE
+LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_DIGIT_TRUE
+LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_CNTRL_FALSE
+LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_CNTRL_TRUE
+LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_BLANK_FALSE
+LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_BLANK_TRUE
+LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_ALPHA_FALSE
+LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_ALPHA_TRUE
+LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_ALNUM_FALSE
+LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_ALNUM_TRUE
+GL_GNULIB_UNICTYPE_PROPERTY_REGIONAL_INDICATOR_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_IGNORABLE_CONTROL_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_EXTENDER_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_DIACRITIC_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_NUMERIC_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_DECIMAL_DIGIT_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_COMPOSITE_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_COMBINING_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_LEFT_OF_PAIR_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_PAIRED_PUNCTUATION_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_OTHER_MATH_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_MATH_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_CURRENCY_SYMBOL_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_TERMINAL_PUNCTUATION_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_SENTENCE_TERMINAL_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_QUOTATION_MARK_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_PARAGRAPH_SEPARATOR_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_LINE_SEPARATOR_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_PUNCTUATION_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_HYPHEN_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_DASH_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_FORMAT_CONTROL_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_ISO_CONTROL_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_NON_BREAK_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_SPACE_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_ZERO_WIDTH_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_EXTENDED_PICTOGRAPHIC_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_EMOJI_COMPONENT_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_EMOJI_MODIFIER_BASE_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_EMOJI_MODIFIER_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_EMOJI_PRESENTATION_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_EMOJI_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_IDS_TRINARY_OPERATOR_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_IDS_BINARY_OPERATOR_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_RADICAL_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_UNIFIED_IDEOGRAPH_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_IDEOGRAPHIC_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_ASCII_HEX_DIGIT_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_HEX_DIGIT_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_BIDI_OTHER_NEUTRAL_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_BIDI_EMBEDDING_OR_OVERRIDE_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_BIDI_PDF_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_BIDI_BOUNDARY_NEUTRAL_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_BIDI_NON_SPACING_MARK_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_BIDI_WHITESPACE_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_BIDI_SEGMENT_SEPARATOR_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_BIDI_BLOCK_SEPARATOR_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_BIDI_COMMON_SEPARATOR_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_BIDI_ARABIC_DIGIT_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_BIDI_EUR_NUM_TERMINATOR_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_BIDI_EUR_NUM_SEPARATOR_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_BIDI_EUROPEAN_DIGIT_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_BIDI_ARABIC_RIGHT_TO_LEFT_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_BIDI_HEBREW_RIGHT_TO_LEFT_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_BIDI_LEFT_TO_RIGHT_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_BIDI_CONTROL_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_GRAPHEME_LINK_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_OTHER_GRAPHEME_EXTEND_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_GRAPHEME_EXTEND_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_GRAPHEME_BASE_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_JOIN_CONTROL_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_PATTERN_SYNTAX_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_PATTERN_WHITE_SPACE_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_XID_CONTINUE_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_XID_START_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_OTHER_ID_CONTINUE_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_ID_CONTINUE_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_OTHER_ID_START_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_ID_START_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_SOFT_DOTTED_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_CHANGES_WHEN_CASEMAPPED_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_CHANGES_WHEN_CASEFOLDED_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_CHANGES_WHEN_TITLECASED_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_CHANGES_WHEN_UPPERCASED_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_CHANGES_WHEN_LOWERCASED_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_CASE_IGNORABLE_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_CASED_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_TITLECASE_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_OTHER_LOWERCASE_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_LOWERCASE_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_OTHER_UPPERCASE_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_UPPERCASE_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_UNASSIGNED_CODE_VALUE_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_PRIVATE_USE_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_VARIATION_SELECTOR_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_LOGICAL_ORDER_EXCEPTION_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_DEPRECATED_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_OTHER_DEFAULT_IGNORABLE_CODE_POINT_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_DEFAULT_IGNORABLE_CODE_POINT_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_NOT_A_CHARACTER_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_OTHER_ALPHABETIC_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_ALPHABETIC_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_PROPERTY_WHITE_SPACE_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_CATEGORY_CN_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_CATEGORY_CO_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_CATEGORY_CS_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_CATEGORY_CF_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_CATEGORY_CC_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_CATEGORY_C_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_CATEGORY_ZP_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_CATEGORY_ZL_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_CATEGORY_ZS_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_CATEGORY_Z_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_CATEGORY_SO_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_CATEGORY_SK_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_CATEGORY_SC_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_CATEGORY_SM_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_CATEGORY_S_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_CATEGORY_PO_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_CATEGORY_PF_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_CATEGORY_PI_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_CATEGORY_PE_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_CATEGORY_PS_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_CATEGORY_PD_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_CATEGORY_PC_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_CATEGORY_P_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_CATEGORY_NO_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_CATEGORY_NL_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_CATEGORY_ND_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_CATEGORY_N_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_CATEGORY_ME_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_CATEGORY_MC_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_CATEGORY_MN_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_CATEGORY_M_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_CATEGORY_LO_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_CATEGORY_LM_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_CATEGORY_LT_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_CATEGORY_LL_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_CATEGORY_LU_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_CATEGORY_LC_DLL_VARIABLE
+GL_GNULIB_UNICTYPE_CATEGORY_L_DLL_VARIABLE
+LIBUNISTRING_UNICTYPE_H
+LIBUNISTRING_COMPILE_UNICASE_TOLOWER_FALSE
+LIBUNISTRING_COMPILE_UNICASE_TOLOWER_TRUE
+GL_GNULIB_UNICASE_EMPTY_SUFFIX_CONTEXT_DLL_VARIABLE
+GL_GNULIB_UNICASE_EMPTY_PREFIX_CONTEXT_DLL_VARIABLE
+LIBUNISTRING_UNICASE_H
+HAVE_UNISTRING_WOE32DLL_H
 TIME_H_DEFINES_TIME_UTC
 UNISTD_H_DEFINES_STRUCT_TIMESPEC
 PTHREAD_H_DEFINES_STRUCT_TIMESPEC
@@ -988,9 +1148,6 @@ GL_COND_OBJ_NANOSLEEP_FALSE
 GL_COND_OBJ_NANOSLEEP_TRUE
 LIB_NANOSLEEP
 NANOSLEEP_LIB
-REPLACE_LOCALTIME
-REPLACE_GMTIME
-GNULIB_GETTIMEOFDAY
 REPLACE_TZSET
 REPLACE_TIMESPEC_GET
 REPLACE_TIMEGM
@@ -999,6 +1156,8 @@ REPLACE_STRFTIME
 REPLACE_NANOSLEEP
 REPLACE_MKTIME
 REPLACE_LOCALTIME_R
+REPLACE_LOCALTIME
+REPLACE_GMTIME
 REPLACE_CTIME
 HAVE_TIMEZONE_T
 HAVE_TIMESPEC_GETRES
@@ -1068,6 +1227,7 @@ GL_GNULIB_EXPLICIT_BZERO
 GL_COND_OBJ_MEMCHR_FALSE
 GL_COND_OBJ_MEMCHR_TRUE
 UNDEFINE_STRTOK_R
+REPLACE_STRVERSCMP
 REPLACE_STRSIGNAL
 REPLACE_STRERRORNAME_NP
 REPLACE_STRERROR_R
@@ -1117,19 +1277,14 @@ GL_COND_OBJ_MBSRTOWCS_FALSE
 GL_COND_OBJ_MBSRTOWCS_TRUE
 GL_COND_OBJ_MBSINIT_FALSE
 GL_COND_OBJ_MBSINIT_TRUE
-HAVE_VISIBILITY
-CFLAG_VISIBILITY
 GL_COND_OBJ_MBRTOWC_FALSE
 GL_COND_OBJ_MBRTOWC_TRUE
 LIB_MBRTOWC
 MBRTOWC_LIB
-LOCALE_ZH_CN
-LC_MONETARY_IMPLEMENTED
-LC_TIME_IMPLEMENTED
-LC_NUMERIC_IMPLEMENTED
-LC_COLLATE_IMPLEMENTED
-LOCALE_FR_UTF8
-LOCALE_JA
+HAVE_VISIBILITY
+CFLAG_VISIBILITY
+GL_COND_OBJ_MBRTOC32_FALSE
+GL_COND_OBJ_MBRTOC32_TRUE
 GL_COND_OBJ_LSTAT_FALSE
 GL_COND_OBJ_LSTAT_TRUE
 LTLIBMULTITHREAD
@@ -1180,6 +1335,41 @@ NEXT_AS_FIRST_DIRECTIVE_LANGINFO_H
 NEXT_LANGINFO_H
 REPLACE_NL_LANGINFO
 HAVE_NL_LANGINFO
+GL_COND_OBJ_ISWXDIGIT_FALSE
+GL_COND_OBJ_ISWXDIGIT_TRUE
+GL_COND_OBJ_ISWPUNCT_FALSE
+GL_COND_OBJ_ISWPUNCT_TRUE
+GL_COND_OBJ_ISWDIGIT_FALSE
+GL_COND_OBJ_ISWDIGIT_TRUE
+GL_COND_OBJ_ISWCTYPE_FALSE
+GL_COND_OBJ_ISWCTYPE_TRUE
+GL_GNULIB_TOWCTRANS
+GL_GNULIB_WCTRANS
+GL_GNULIB_ISWCTYPE
+GL_GNULIB_WCTYPE
+GL_GNULIB_ISWXDIGIT
+GL_GNULIB_ISWPUNCT
+GL_GNULIB_ISWDIGIT
+GL_GNULIB_ISWBLANK
+GL_COND_OBJ_ISWBLANK_FALSE
+GL_COND_OBJ_ISWBLANK_TRUE
+REPLACE_TOWLOWER
+REPLACE_ISWCNTRL
+HAVE_WCTYPE_H
+NEXT_AS_FIRST_DIRECTIVE_WCTYPE_H
+NEXT_WCTYPE_H
+HAVE_CRTDEFS_H
+HAVE_WINT_T
+HAVE_ISWCNTRL
+REPLACE_WCTYPE
+REPLACE_WCTRANS
+REPLACE_ISWXDIGIT
+REPLACE_ISWPUNCT
+REPLACE_ISWDIGIT
+REPLACE_ISWBLANK
+HAVE_WCTRANS_T
+HAVE_WCTYPE_T
+HAVE_ISWBLANK
 GL_COND_OBJ_ISBLANK_FALSE
 GL_COND_OBJ_ISBLANK_TRUE
 GL_GNULIB_IOCTL
@@ -1227,7 +1417,6 @@ HAVE_SIGNED_WINT_T
 HAVE_SIGNED_WCHAR_T
 HAVE_SIGNED_SIG_ATOMIC_T
 BITSIZEOF_WINT_T
-BITSIZEOF_WCHAR_T
 BITSIZEOF_SIG_ATOMIC_T
 BITSIZEOF_SIZE_T
 BITSIZEOF_PTRDIFF_T
@@ -1633,6 +1822,7 @@ REPLACE_GETCWD
 REPLACE_FTRUNCATE
 REPLACE_FDATASYNC
 REPLACE_FCHOWNAT
+REPLACE_FCHDIR
 REPLACE_FACCESSAT
 REPLACE_EXECVPE
 REPLACE_EXECVP
@@ -1782,6 +1972,24 @@ GL_GNULIB_CHDIR
 GL_GNULIB_ACCESS
 GL_COND_OBJ_CANONICALIZE_LGPL_FALSE
 GL_COND_OBJ_CANONICALIZE_LGPL_TRUE
+HAVE_WORKING_MBRTOC32
+LOCALE_ZH_CN
+LC_MONETARY_IMPLEMENTED
+LC_TIME_IMPLEMENTED
+LC_NUMERIC_IMPLEMENTED
+LC_COLLATE_IMPLEMENTED
+LOCALE_FR_UTF8
+LOCALE_JA
+SMALL_WCHAR_T
+BITSIZEOF_WCHAR_T
+CXX_HAS_CHAR8_TYPE
+CXX_HAS_UCHAR_TYPES
+GNULIBHEADERS_OVERRIDE_CHAR32_T
+GNULIBHEADERS_OVERRIDE_CHAR16_T
+GNULIBHEADERS_OVERRIDE_CHAR8_T
+HAVE_UCHAR_H
+NEXT_AS_FIRST_DIRECTIVE_UCHAR_H
+NEXT_UCHAR_H
 REPLACE_WCTOMB
 REPLACE_UNSETENV
 REPLACE_STRTOULL
@@ -1798,6 +2006,7 @@ REPLACE_REALLOC_FOR_REALLOC_POSIX
 REPLACE_REALLOC_FOR_REALLOC_GNU
 REPLACE_RANDOM_R
 REPLACE_RANDOM
+REPLACE_RAND
 REPLACE_QSORT_R
 REPLACE_PUTENV
 REPLACE_PTSNAME_R
@@ -1892,6 +2101,7 @@ GL_GNULIB_REALLOC_GNU
 GL_GNULIB_REALLOCARRAY
 GL_GNULIB_RANDOM_R
 GL_GNULIB_RANDOM
+GL_GNULIB_RAND
 GL_GNULIB_QSORT_R
 GL_GNULIB_PUTENV
 GL_GNULIB_PTSNAME_R
@@ -1919,6 +2129,7 @@ GL_GNULIB_ATOLL
 GL_GNULIB_ALIGNED_ALLOC
 GL_GNULIB__EXIT
 GL_GNULIB_MDA_WCSDUP
+GL_GNULIB_WGETCWD
 GL_GNULIB_WCSFTIME
 GL_GNULIB_WCSWIDTH
 GL_GNULIB_WCSTOK
@@ -1957,6 +2168,7 @@ GL_GNULIB_MBSNRTOWCS
 GL_GNULIB_MBSRTOWCS
 GL_GNULIB_MBRLEN
 GL_GNULIB_MBRTOWC
+GL_GNULIB_MBSZERO
 GL_GNULIB_MBSINIT
 GL_GNULIB_WCTOB
 GL_GNULIB_BTOWC
@@ -2025,6 +2237,43 @@ HAVE_MBRLEN
 HAVE_MBRTOWC
 HAVE_MBSINIT
 HAVE_BTOWC
+REPLACE_MBRTOC32
+REPLACE_MBRTOC16
+REPLACE_C32RTOMB
+HAVE_MBRTOC32
+HAVE_MBRTOC16
+HAVE_C32RTOMB
+GL_GNULIB_MBSTOC32S
+GL_GNULIB_MBSRTOC32S
+GL_GNULIB_MBSNRTOC32S
+GL_GNULIB_MBRTOC32
+GL_GNULIB_MBRTOC16
+GL_GNULIB_C32_GET_TYPE_TEST
+GL_GNULIB_C32_GET_MAPPING
+GL_GNULIB_C32_APPLY_TYPE_TEST
+GL_GNULIB_C32_APPLY_MAPPING
+GL_GNULIB_C32TOB
+GL_GNULIB_C32SWIDTH
+GL_GNULIB_C32STOMBS
+GL_GNULIB_C32SRTOMBS
+GL_GNULIB_C32SNRTOMBS
+GL_GNULIB_C32RTOMB
+GL_GNULIB_C32WIDTH
+GL_GNULIB_C32TOUPPER
+GL_GNULIB_C32TOLOWER
+GL_GNULIB_C32ISXDIGIT
+GL_GNULIB_C32ISUPPER
+GL_GNULIB_C32ISSPACE
+GL_GNULIB_C32ISPUNCT
+GL_GNULIB_C32ISPRINT
+GL_GNULIB_C32ISLOWER
+GL_GNULIB_C32ISGRAPH
+GL_GNULIB_C32ISDIGIT
+GL_GNULIB_C32ISCNTRL
+GL_GNULIB_C32ISBLANK
+GL_GNULIB_C32ISALPHA
+GL_GNULIB_C32ISALNUM
+GL_GNULIB_BTOC32
 GL_GENERATE_ASSERT_H_FALSE
 GL_GENERATE_ASSERT_H_TRUE
 ASSERT_H
@@ -2842,7 +3091,7 @@ if test "$ac_init_help" = "long"; then
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-\`configure' configures man-db 2.12.0 to adapt to many kinds of systems.
+\`configure' configures man-db 2.12.1 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -2913,7 +3162,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of man-db 2.12.0:";;
+     short | recursive ) echo "Configuration of man-db 2.12.1:";;
    esac
   cat <<\_ACEOF
 
@@ -3119,7 +3368,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-man-db configure 2.12.0
+man-db configure 2.12.1
 generated by GNU Autoconf 2.71
 
 Copyright (C) 2021 Free Software Foundation, Inc.
@@ -3781,7 +4030,7 @@ cat >config.log <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by man-db $as_me 2.12.0, which was
+It was created by man-db $as_me 2.12.1, which was
 generated by GNU Autoconf 2.71.  Invocation command line was
 
   $ $0$ac_configure_args_raw
@@ -4389,6 +4638,8 @@ as_fn_append ac_header_c_list " features.h features_h HAVE_FEATURES_H"
 as_fn_append ac_header_c_list " linewrap.h linewrap_h HAVE_LINEWRAP_H"
 as_fn_append ac_func_c_list " btowc HAVE_BTOWC"
 as_fn_append ac_func_c_list " mbrtowc HAVE_MBRTOWC"
+as_fn_append ac_header_c_list " uchar.h uchar_h HAVE_UCHAR_H"
+as_fn_append ac_func_c_list " mbsinit HAVE_MBSINIT"
 as_fn_append ac_func_c_list " canonicalize_file_name HAVE_CANONICALIZE_FILE_NAME"
 as_fn_append ac_func_c_list " realpath HAVE_REALPATH"
 as_fn_append ac_func_c_list " lstat HAVE_LSTAT"
@@ -4421,10 +4672,12 @@ as_fn_append ac_func_c_list " glob_pattern_p HAVE_GLOB_PATTERN_P"
 as_fn_append ac_header_c_list " threads.h threads_h HAVE_THREADS_H"
 as_fn_append ac_header_c_list " limits.h limits_h HAVE_LIMITS_H"
 as_fn_append ac_func_c_list " isblank HAVE_ISBLANK"
+as_fn_append ac_func_c_list " iswcntrl HAVE_ISWCNTRL"
+as_fn_append ac_header_c_list " crtdefs.h crtdefs_h HAVE_CRTDEFS_H"
+as_fn_append ac_header_c_list " wctype.h wctype_h HAVE_WCTYPE_H"
 as_fn_append ac_header_c_list " langinfo.h langinfo_h HAVE_LANGINFO_H"
 as_fn_append ac_func_c_list " lchmod HAVE_LCHMOD"
 as_fn_append ac_header_c_list " xlocale.h xlocale_h HAVE_XLOCALE_H"
-as_fn_append ac_func_c_list " mbsinit HAVE_MBSINIT"
 as_fn_append ac_header_c_list " sys/mman.h sys_mman_h HAVE_SYS_MMAN_H"
 as_fn_append ac_func_c_list " mprotect HAVE_MPROTECT"
 as_fn_append ac_func_c_list " mkstemp HAVE_MKSTEMP"
@@ -4456,10 +4709,7 @@ as_fn_append ac_func_c_list " unlinkat HAVE_UNLINKAT"
 as_fn_append ac_header_c_list " utime.h utime_h HAVE_UTIME_H"
 as_fn_append ac_func_c_list " vasnprintf HAVE_VASNPRINTF"
 as_fn_append ac_func_c_list " snprintf HAVE_SNPRINTF"
-as_fn_append ac_header_c_list " crtdefs.h crtdefs_h HAVE_CRTDEFS_H"
 as_fn_append ac_func_c_list " wcrtomb HAVE_WCRTOMB"
-as_fn_append ac_func_c_list " iswcntrl HAVE_ISWCNTRL"
-as_fn_append ac_header_c_list " wctype.h wctype_h HAVE_WCTYPE_H"
 gt_needs="$gt_needs "
 
 # Auxiliary files required by this configure script.
@@ -5143,7 +5393,7 @@ fi
 
 # Define the identity of the package.
  PACKAGE='man-db'
- VERSION='2.12.0'
+ VERSION='2.12.1'
 
 
 printf "%s\n" "#define PACKAGE \"$PACKAGE\"" >>confdefs.h
@@ -6891,8 +7141,8 @@ case $host_os in *\ *) host_os=`echo "$host_os" | sed 's/ /-/g'`;; esac
 
 
 # Define below date and version information to be put into man pages etc.
-date=2023-09-23
-roff_version=`echo 2.12.0 | sed 's/-/\\-/g'`
+date=2024-04-05
+roff_version=`echo 2.12.1 | sed 's/-/\\-/g'`
 
 # Explicitly check for pkg-config early on, since otherwise the conditional
 # calls in MAN_ARG_SYSTEMDTMPFILESDIR and MAN_ARG_SYSTEMDSYSTEMUNITDIR are
@@ -9294,7 +9544,7 @@ rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
     if test $ac_opt_found != yes; then
       case $host_os in #(
-  mingw*) :
+  mingw* | windows*) :
     ac_cv_sys_largefile_opts="supported through gnulib"
            ac_opt_found=yes
        ;; #(
@@ -9428,7 +9678,7 @@ else $as_nop
                  *)         gl_use_threads=yes ;;
                esac
                ;;
-                  mingw*)
+                  mingw* | windows*)
                case "$gl_use_winpthreads_default" in
                  yes) gl_use_threads=posix ;;
                  no)  gl_use_threads=windows ;;
@@ -9528,8 +9778,24 @@ fi
   # Code from module attribute:
   # Code from module basename-lgpl:
   # Code from module bitrotate:
+  # Code from module btoc32:
   # Code from module btowc:
   # Code from module builtin-expect:
+  # Code from module c32_apply_type_test:
+  # Code from module c32_get_type_test:
+  # Code from module c32isalnum:
+  # Code from module c32isalpha:
+  # Code from module c32isblank:
+  # Code from module c32iscntrl:
+  # Code from module c32isdigit:
+  # Code from module c32isgraph:
+  # Code from module c32islower:
+  # Code from module c32isprint:
+  # Code from module c32ispunct:
+  # Code from module c32isspace:
+  # Code from module c32isupper:
+  # Code from module c32isxdigit:
+  # Code from module c32tolower:
   # Code from module c99:
   # Code from module calloc-gnu:
   # Code from module calloc-posix:
@@ -9611,10 +9877,16 @@ fi
   # Code from module idpriv-droptemp:
   # Code from module idx:
   # Code from module include_next:
+  # Code from module inline:
   # Code from module intprops:
   # Code from module inttypes-incomplete:
   # Code from module ioctl:
   # Code from module isblank:
+  # Code from module iswblank:
+  # Code from module iswctype:
+  # Code from module iswdigit:
+  # Code from module iswpunct:
+  # Code from module iswxdigit:
   # Code from module langinfo:
   # Code from module largefile:
 
@@ -9634,9 +9906,12 @@ fi
   # Code from module malloca:
   # Code from module manywarnings:
   # Code from module map:
+  # Code from module mbrtoc32:
   # Code from module mbrtowc:
   # Code from module mbsinit:
+  # Code from module mbsrtoc32s:
   # Code from module mbsrtowcs:
+  # Code from module mbszero:
   # Code from module mbtowc:
   # Code from module memchr:
   # Code from module memmem:
@@ -9751,8 +10026,32 @@ fi
 
   # Code from module time-h:
   # Code from module timespec:
+  # Code from module uchar:
+  # Code from module unicase/base:
+  # Code from module unicase/tolower:
+  # Code from module unictype/base:
+  # Code from module unictype/ctype-alnum:
+  # Code from module unictype/ctype-alpha:
+  # Code from module unictype/ctype-blank:
+  # Code from module unictype/ctype-cntrl:
+  # Code from module unictype/ctype-digit:
+  # Code from module unictype/ctype-graph:
+  # Code from module unictype/ctype-lower:
+  # Code from module unictype/ctype-print:
+  # Code from module unictype/ctype-punct:
+  # Code from module unictype/ctype-space:
+  # Code from module unictype/ctype-upper:
+  # Code from module unictype/ctype-xdigit:
+  # Code from module uninorm/base:
   # Code from module unistd:
   # Code from module unistd-safer:
+  # Code from module unistr/base:
+  # Code from module unistr/u32-chr:
+  # Code from module unistr/u32-cpy:
+  # Code from module unistr/u32-pcpy:
+  # Code from module unistr/u32-strcat:
+  # Code from module unistr/u32-strlen:
+  # Code from module unitypes:
   # Code from module unlink:
   # Code from module unlinkat:
   # Code from module utime:
@@ -9767,6 +10066,7 @@ fi
   # Code from module warnings:
   # Code from module wchar:
   # Code from module wcrtomb:
+  # Code from module wctype:
   # Code from module wctype-h:
   # Code from module windows-mutex:
   # Code from module windows-once:
@@ -21341,6 +21641,140 @@ printf "%s\n" "$gl_cv_source_line_length_unlimited" >&6; }
 
 
 
+
+  GL_GNULIB_BTOC32=0
+
+
+
+  GL_GNULIB_C32ISALNUM=0
+
+
+
+  GL_GNULIB_C32ISALPHA=0
+
+
+
+  GL_GNULIB_C32ISBLANK=0
+
+
+
+  GL_GNULIB_C32ISCNTRL=0
+
+
+
+  GL_GNULIB_C32ISDIGIT=0
+
+
+
+  GL_GNULIB_C32ISGRAPH=0
+
+
+
+  GL_GNULIB_C32ISLOWER=0
+
+
+
+  GL_GNULIB_C32ISPRINT=0
+
+
+
+  GL_GNULIB_C32ISPUNCT=0
+
+
+
+  GL_GNULIB_C32ISSPACE=0
+
+
+
+  GL_GNULIB_C32ISUPPER=0
+
+
+
+  GL_GNULIB_C32ISXDIGIT=0
+
+
+
+  GL_GNULIB_C32TOLOWER=0
+
+
+
+  GL_GNULIB_C32TOUPPER=0
+
+
+
+  GL_GNULIB_C32WIDTH=0
+
+
+
+  GL_GNULIB_C32RTOMB=0
+
+
+
+  GL_GNULIB_C32SNRTOMBS=0
+
+
+
+  GL_GNULIB_C32SRTOMBS=0
+
+
+
+  GL_GNULIB_C32STOMBS=0
+
+
+
+  GL_GNULIB_C32SWIDTH=0
+
+
+
+  GL_GNULIB_C32TOB=0
+
+
+
+  GL_GNULIB_C32_APPLY_MAPPING=0
+
+
+
+  GL_GNULIB_C32_APPLY_TYPE_TEST=0
+
+
+
+  GL_GNULIB_C32_GET_MAPPING=0
+
+
+
+  GL_GNULIB_C32_GET_TYPE_TEST=0
+
+
+
+  GL_GNULIB_MBRTOC16=0
+
+
+
+  GL_GNULIB_MBRTOC32=0
+
+
+
+  GL_GNULIB_MBSNRTOC32S=0
+
+
+
+  GL_GNULIB_MBSRTOC32S=0
+
+
+
+  GL_GNULIB_MBSTOC32S=0
+
+
+
+
+    HAVE_C32RTOMB=1;
+  HAVE_MBRTOC16=1;
+  HAVE_MBRTOC32=1;
+  REPLACE_C32RTOMB=0;
+  REPLACE_MBRTOC16=0;
+  REPLACE_MBRTOC32=0;
+
+
     HAVE_BTOWC=1;
   HAVE_MBSINIT=1;
   HAVE_MBRTOWC=1;
@@ -21604,7 +22038,7 @@ _ACEOF
         # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
         # "ja" as "Japanese" or "Japanese_Japan.932",
         # and similar.
-        mingw*)
+        mingw* | windows*)
           # Test for the native Windows locale name.
           if (LC_ALL=French_France.1252 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
             gt_cv_locale_fr=French_France.1252
@@ -21654,6 +22088,12 @@ fi
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_locale_fr" >&5
 printf "%s\n" "$gt_cv_locale_fr" >&6; }
   LOCALE_FR=$gt_cv_locale_fr
+  case $LOCALE_FR in #(
+    '' | *[[:space:]\"\$\'*[]*)
+            { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: invalid locale \"$LOCALE_FR\"; assuming \"none\"" >&5
+printf "%s\n" "$as_me: WARNING: invalid locale \"$LOCALE_FR\"; assuming \"none\"" >&2;}
+      LOCALE_FR=none;;
+  esac
 
 
 
@@ -21671,6 +22111,10 @@ printf "%s\n" "$gt_cv_locale_fr" >&6; }
 
 
 
+  GL_GNULIB_MBSZERO=0
+
+
+
   GL_GNULIB_MBRTOWC=0
 
 
@@ -21823,6 +22267,10 @@ printf "%s\n" "$gt_cv_locale_fr" >&6; }
 
 
 
+  GL_GNULIB_WGETCWD=0
+
+
+
   GL_GNULIB_MDA_WCSDUP=1
 
 
@@ -21933,6 +22381,10 @@ printf "%s\n" "$gt_cv_locale_fr" >&6; }
 
 
 
+  GL_GNULIB_RAND=0
+
+
+
   GL_GNULIB_RANDOM=0
 
 
@@ -22100,6 +22552,7 @@ printf "%s\n" "$gt_cv_locale_fr" >&6; }
   REPLACE_PTSNAME_R=0;
   REPLACE_PUTENV=0;
   REPLACE_QSORT_R=0;
+  REPLACE_RAND=0;
   REPLACE_RANDOM=0;
   REPLACE_RANDOM_R=0;
   REPLACE_REALLOC_FOR_REALLOC_GNU=0;
@@ -22118,6 +22571,1211 @@ printf "%s\n" "$gt_cv_locale_fr" >&6; }
   REPLACE_WCTOMB=0;
 
 
+
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether char8_t is correctly defined" >&5
+printf %s "checking whether char8_t is correctly defined... " >&6; }
+if test ${gl_cv_type_char8_t_works+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+          #ifdef __HAIKU__
+           #include <stdint.h>
+          #endif
+          #include <uchar.h>
+          int verify[(char8_t)(-1) >= 0 && sizeof (char8_t) == sizeof (unsigned char) ? 1 : -1];
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_type_char8_t_works=yes
+else $as_nop
+  gl_cv_type_char8_t_works=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_type_char8_t_works" >&5
+printf "%s\n" "$gl_cv_type_char8_t_works" >&6; }
+  if test $gl_cv_type_char8_t_works = no; then
+    GNULIBHEADERS_OVERRIDE_CHAR8_T=1
+  else
+    GNULIBHEADERS_OVERRIDE_CHAR8_T=0
+  fi
+
+
+
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether char16_t is correctly defined" >&5
+printf %s "checking whether char16_t is correctly defined... " >&6; }
+if test ${gl_cv_type_char16_t_works+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+          #ifdef __HAIKU__
+           #include <stdint.h>
+          #endif
+          #include <uchar.h>
+          /* For simplicity, assume that uint16_least_t is equivalent to
+             'unsigned short'.  */
+          int verify[(char16_t)(-1) >= 0 && sizeof (char16_t) == sizeof (unsigned short) ? 1 : -1];
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_type_char16_t_works=yes
+else $as_nop
+  gl_cv_type_char16_t_works=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_type_char16_t_works" >&5
+printf "%s\n" "$gl_cv_type_char16_t_works" >&6; }
+  if test $gl_cv_type_char16_t_works = no; then
+    GNULIBHEADERS_OVERRIDE_CHAR16_T=1
+  else
+    GNULIBHEADERS_OVERRIDE_CHAR16_T=0
+  fi
+
+
+
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether char32_t is correctly defined" >&5
+printf %s "checking whether char32_t is correctly defined... " >&6; }
+if test ${gl_cv_type_char32_t_works+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+          #ifdef __HAIKU__
+           #include <stdint.h>
+          #endif
+          #include <uchar.h>
+          /* For simplicity, assume that uint32_least_t is equivalent to
+             'unsigned int'.  */
+          int verify[(char32_t)(-1) >= 0 && sizeof (char32_t) == sizeof (unsigned int) ? 1 : -1];
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_type_char32_t_works=yes
+else $as_nop
+  gl_cv_type_char32_t_works=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_type_char32_t_works" >&5
+printf "%s\n" "$gl_cv_type_char32_t_works" >&6; }
+  if test $gl_cv_type_char32_t_works = no; then
+    GNULIBHEADERS_OVERRIDE_CHAR32_T=1
+  else
+    GNULIBHEADERS_OVERRIDE_CHAR32_T=0
+  fi
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+     if test $gl_cv_have_include_next = yes; then
+       gl_cv_next_uchar_h='<'uchar.h'>'
+     else
+       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking absolute name of <uchar.h>" >&5
+printf %s "checking absolute name of <uchar.h>... " >&6; }
+if test ${gl_cv_next_uchar_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+             if test $ac_cv_header_uchar_h = yes; then
+
+
+
+
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <uchar.h>
+_ACEOF
+                case "$host_os" in
+    aix*) gl_absname_cpp="$ac_cpp -C" ;;
+    *)    gl_absname_cpp="$ac_cpp" ;;
+  esac
+
+  case "$host_os" in
+    mingw* | windows*)
+                                          gl_dirsep_regex='[/\\]'
+      ;;
+    *)
+      gl_dirsep_regex='\/'
+      ;;
+  esac
+      gl_make_literal_regex_sed='s,[]$^\\.*/[],\\&,g'
+  gl_header_literal_regex=`echo 'uchar.h' \
+                           | sed -e "$gl_make_literal_regex_sed"`
+  gl_absolute_header_sed="/${gl_dirsep_regex}${gl_header_literal_regex}/"'{
+      s/.*"\(.*'"${gl_dirsep_regex}${gl_header_literal_regex}"'\)".*/\1/
+      s|^/[^/]|//&|
+      p
+      q
+    }'
+
+        gl_cv_absolute_uchar_h=`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&5 |
+  sed -n "$gl_absolute_header_sed"`
+
+          gl_header=$gl_cv_absolute_uchar_h
+          gl_cv_next_uchar_h='"'$gl_header'"'
+          else
+               gl_cv_next_uchar_h='<'uchar.h'>'
+             fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_next_uchar_h" >&5
+printf "%s\n" "$gl_cv_next_uchar_h" >&6; }
+     fi
+     NEXT_UCHAR_H=$gl_cv_next_uchar_h
+
+     if test $gl_cv_have_include_next = yes || test $gl_cv_have_include_next = buggy; then
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include_next'
+       gl_next_as_first_directive='<'uchar.h'>'
+     else
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include'
+       gl_next_as_first_directive=$gl_cv_next_uchar_h
+     fi
+     NEXT_AS_FIRST_DIRECTIVE_UCHAR_H=$gl_next_as_first_directive
+
+
+
+
+  if test $ac_cv_header_uchar_h = yes; then
+    HAVE_UCHAR_H=1
+  else
+    HAVE_UCHAR_H=0
+  fi
+
+
+
+
+
+
+
+  CXX_HAS_UCHAR_TYPES=0
+  if test $HAVE_UCHAR_H = 0; then
+    if test "$CXX" != no; then
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether the C++ compiler predefines the <uchar.h> types" >&5
+printf %s "checking whether the C++ compiler predefines the <uchar.h> types... " >&6; }
+if test ${gl_cv_cxx_has_uchar_types+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+                    cat > conftest.cpp <<\EOF
+#include <stddef.h>
+char16_t a;
+char32_t b;
+EOF
+         gl_command="$CXX $CXXFLAGS $CPPFLAGS -c conftest.cpp"
+         if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$gl_command\""; } >&5
+  (eval $gl_command) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then
+           gl_cv_cxx_has_uchar_types=yes
+         else
+           gl_cv_cxx_has_uchar_types=no
+         fi
+         rm -fr conftest*
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_cxx_has_uchar_types" >&5
+printf "%s\n" "$gl_cv_cxx_has_uchar_types" >&6; }
+      if test $gl_cv_cxx_has_uchar_types = yes; then
+        CXX_HAS_UCHAR_TYPES=1
+      fi
+    fi
+  fi
+
+  CXX_HAS_CHAR8_TYPE=0
+  if test $HAVE_UCHAR_H = 0; then
+    if test "$CXX" != no; then
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether the C++ compiler predefines the char8_t types" >&5
+printf %s "checking whether the C++ compiler predefines the char8_t types... " >&6; }
+if test ${gl_cv_cxx_has_char8_type+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+                    cat > conftest.cpp <<\EOF
+#include <stddef.h>
+char8_t a;
+EOF
+         gl_command="$CXX $CXXFLAGS $CPPFLAGS -c conftest.cpp"
+         if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$gl_command\""; } >&5
+  (eval $gl_command) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then
+           gl_cv_cxx_has_char8_type=yes
+         else
+           gl_cv_cxx_has_char8_type=no
+         fi
+         rm -fr conftest*
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_cxx_has_char8_type" >&5
+printf "%s\n" "$gl_cv_cxx_has_char8_type" >&6; }
+      if test $gl_cv_cxx_has_char8_type = yes; then
+        CXX_HAS_CHAR8_TYPE=1
+      fi
+    fi
+  fi
+
+
+
+
+  for gltype in wchar_t ; do
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for bit size of $gltype" >&5
+printf %s "checking for bit size of $gltype... " >&6; }
+if eval test \${gl_cv_bitsizeof_${gltype}+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if ac_fn_c_compute_int "$LINENO" "sizeof ($gltype) * CHAR_BIT" "result"        "
+  #include <stddef.h>
+  #include <signal.h>
+  #if HAVE_WCHAR_H
+  # include <wchar.h>
+  #endif
+
+#include <limits.h>"
+then :
+
+else $as_nop
+  result=unknown
+fi
+
+       eval gl_cv_bitsizeof_${gltype}=\$result
+
+fi
+eval ac_res=\$gl_cv_bitsizeof_${gltype}
+	       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+printf "%s\n" "$ac_res" >&6; }
+    eval result=\$gl_cv_bitsizeof_${gltype}
+    if test $result = unknown; then
+                                                result=0
+    fi
+    GLTYPE=`echo "$gltype" | tr 'abcdefghijklmnopqrstuvwxyz ' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'`
+    printf "%s\n" "#define BITSIZEOF_${GLTYPE} $result" >>confdefs.h
+
+    eval BITSIZEOF_${GLTYPE}=\$result
+  done
+
+
+  if test $BITSIZEOF_WCHAR_T -lt 32; then
+    SMALL_WCHAR_T=1
+  else
+    SMALL_WCHAR_T=0
+  fi
+
+
+
+
+
+
+
+
+   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for mbstate_t" >&5
+printf %s "checking for mbstate_t... " >&6; }
+if test ${ac_cv_type_mbstate_t+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$ac_includes_default
+             #include <wchar.h>
+int
+main (void)
+{
+mbstate_t x; return sizeof x;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_cv_type_mbstate_t=yes
+else $as_nop
+  ac_cv_type_mbstate_t=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_type_mbstate_t" >&5
+printf "%s\n" "$ac_cv_type_mbstate_t" >&6; }
+   if test $ac_cv_type_mbstate_t = yes; then
+
+printf "%s\n" "#define HAVE_MBSTATE_T 1" >>confdefs.h
+
+   else
+
+printf "%s\n" "#define mbstate_t int" >>confdefs.h
+
+   fi
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a traditional japanese locale" >&5
+printf %s "checking for a traditional japanese locale... " >&6; }
+if test ${gt_cv_locale_ja+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <time.h>
+#if HAVE_LANGINFO_CODESET
+# include <langinfo.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+struct tm t;
+char buf[16];
+int main ()
+{
+  /* On BeOS and Haiku, locales are not implemented in libc.  Rather, libintl
+     imitates locale dependent behaviour by looking at the environment
+     variables, and all locales use the UTF-8 encoding.  */
+#if defined __BEOS__ || defined __HAIKU__
+  return 1;
+#else
+  /* Check whether the given locale name is recognized by the system.  */
+# if defined _WIN32 && !defined __CYGWIN__
+  /* On native Windows, setlocale(category, "") looks at the system settings,
+     not at the environment variables.  Also, when an encoding suffix such
+     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
+     category of the locale to "C".  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
+      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+    return 1;
+# else
+  if (setlocale (LC_ALL, "") == NULL) return 1;
+# endif
+  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
+     On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
+     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
+     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
+     some unit tests fail.
+     On MirBSD 10, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "UTF-8".  */
+# if HAVE_LANGINFO_CODESET
+  {
+    const char *cs = nl_langinfo (CODESET);
+    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0
+        || strcmp (cs, "UTF-8") == 0)
+      return 1;
+  }
+# endif
+# ifdef __CYGWIN__
+  /* On Cygwin, avoid locale names without encoding suffix, because the
+     locale_charset() function relies on the encoding suffix.  Note that
+     LC_ALL is set on the command line.  */
+  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
+# endif
+  /* Check whether MB_CUR_MAX is > 1.  This excludes the dysfunctional locales
+     on Cygwin 1.5.x.  */
+  if (MB_CUR_MAX == 1)
+    return 1;
+  /* Check whether in a month name, no byte in the range 0x80..0x9F occurs.
+     This excludes the UTF-8 encoding (except on MirBSD).  */
+  {
+    const char *p;
+    t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
+    if (strftime (buf, sizeof (buf), "%B", &t) < 2) return 1;
+    for (p = buf; *p != '\0'; p++)
+      if ((unsigned char) *p >= 0x80 && (unsigned char) *p < 0xa0)
+        return 1;
+  }
+  return 0;
+#endif
+}
+
+_ACEOF
+    if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest$ac_exeext; then
+      case "$host_os" in
+        # Handle native Windows specially, because there setlocale() interprets
+        # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
+        # "fr" or "fra" as "French" or "French_France.1252",
+        # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
+        # "ja" as "Japanese" or "Japanese_Japan.932",
+        # and similar.
+        mingw* | windows*)
+          # Note that on native Windows, the Japanese locale is
+          # Japanese_Japan.932, and CP932 is very different from EUC-JP, so we
+          # cannot use it here.
+          gt_cv_locale_ja=none
+          ;;
+        *)
+          # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+          # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
+          # configure script would override the LC_ALL setting. Likewise for
+          # LC_CTYPE, which is also set at the beginning of the configure script.
+          # Test for the AIX locale name.
+          if (LC_ALL=ja_JP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_ja=ja_JP
+          else
+            # Test for the locale name with explicit encoding suffix.
+            if (LC_ALL=ja_JP.EUC-JP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+              gt_cv_locale_ja=ja_JP.EUC-JP
+            else
+              # Test for the HP-UX, OSF/1, NetBSD locale name.
+              if (LC_ALL=ja_JP.eucJP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                gt_cv_locale_ja=ja_JP.eucJP
+              else
+                # Test for the IRIX, FreeBSD locale name.
+                if (LC_ALL=ja_JP.EUC LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                  gt_cv_locale_ja=ja_JP.EUC
+                else
+                  # Test for the Solaris 7 locale name.
+                  if (LC_ALL=ja LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                    gt_cv_locale_ja=ja
+                  else
+                    # Special test for NetBSD 1.6.
+                    if test -f /usr/share/locale/ja_JP.eucJP/LC_CTYPE; then
+                      gt_cv_locale_ja=ja_JP.eucJP
+                    else
+                      # None found.
+                      gt_cv_locale_ja=none
+                    fi
+                  fi
+                fi
+              fi
+            fi
+          fi
+          ;;
+      esac
+    fi
+    rm -fr conftest*
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_locale_ja" >&5
+printf "%s\n" "$gt_cv_locale_ja" >&6; }
+  LOCALE_JA=$gt_cv_locale_ja
+  case $LOCALE_JA in #(
+    '' | *[[:space:]\"\$\'*[]*)
+            { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: invalid locale \"$LOCALE_JA\"; assuming \"none\"" >&5
+printf "%s\n" "$as_me: WARNING: invalid locale \"$LOCALE_JA\"; assuming \"none\"" >&2;}
+      LOCALE_JA=none;;
+  esac
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a french Unicode locale" >&5
+printf %s "checking for a french Unicode locale... " >&6; }
+if test ${gt_cv_locale_fr_utf8+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    case "$host_os" in
+      *-musl* | midipix*)
+                                        gt_cv_locale_fr_utf8=fr_FR.UTF-8
+        ;;
+      *)
+        cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <time.h>
+#if HAVE_LANGINFO_CODESET
+# include <langinfo.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+struct tm t;
+char buf[16];
+int main () {
+  /* On BeOS and Haiku, locales are not implemented in libc.  Rather, libintl
+     imitates locale dependent behaviour by looking at the environment
+     variables, and all locales use the UTF-8 encoding.  */
+#if !(defined __BEOS__ || defined __HAIKU__)
+  /* Check whether the given locale name is recognized by the system.  */
+# if defined _WIN32 && !defined __CYGWIN__
+  /* On native Windows, setlocale(category, "") looks at the system settings,
+     not at the environment variables.  Also, when an encoding suffix such
+     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
+     category of the locale to "C".  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
+      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+    return 1;
+# else
+  if (setlocale (LC_ALL, "") == NULL) return 1;
+# endif
+  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
+     On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
+     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
+     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
+     some unit tests fail.  */
+# if HAVE_LANGINFO_CODESET
+  {
+    const char *cs = nl_langinfo (CODESET);
+    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0)
+      return 1;
+  }
+# endif
+# ifdef __CYGWIN__
+  /* On Cygwin, avoid locale names without encoding suffix, because the
+     locale_charset() function relies on the encoding suffix.  Note that
+     LC_ALL is set on the command line.  */
+  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
+# endif
+  /* Check whether in the abbreviation of the second month, the second
+     character (should be U+00E9: LATIN SMALL LETTER E WITH ACUTE) is
+     two bytes long, with UTF-8 encoding.  */
+  t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
+  if (strftime (buf, sizeof (buf), "%b", &t) < 4
+      || buf[1] != (char) 0xc3 || buf[2] != (char) 0xa9 || buf[3] != 'v')
+    return 1;
+#endif
+#if !defined __BIONIC__ /* Bionic libc's 'struct lconv' is just a dummy.  */
+  /* Check whether the decimal separator is a comma.
+     On NetBSD 3.0 in the fr_FR.ISO8859-1 locale, localeconv()->decimal_point
+     are nl_langinfo(RADIXCHAR) are both ".".  */
+  if (localeconv () ->decimal_point[0] != ',') return 1;
+#endif
+  return 0;
+}
+
+_ACEOF
+        if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest$ac_exeext; then
+          case "$host_os" in
+            # Handle native Windows specially, because there setlocale() interprets
+            # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
+            # "fr" or "fra" as "French" or "French_France.1252",
+            # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
+            # "ja" as "Japanese" or "Japanese_Japan.932",
+            # and similar.
+            mingw* | windows*)
+              # Test for the hypothetical native Windows locale name.
+              if (LC_ALL=French_France.65001 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                gt_cv_locale_fr_utf8=French_France.65001
+              else
+                # None found.
+                gt_cv_locale_fr_utf8=none
+              fi
+              ;;
+            *)
+              # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+              # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
+              # configure script would override the LC_ALL setting. Likewise for
+              # LC_CTYPE, which is also set at the beginning of the configure script.
+              # Test for the usual locale name.
+              if (LC_ALL=fr_FR LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                gt_cv_locale_fr_utf8=fr_FR
+              else
+                # Test for the locale name with explicit encoding suffix.
+                if (LC_ALL=fr_FR.UTF-8 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                  gt_cv_locale_fr_utf8=fr_FR.UTF-8
+                else
+                  # Test for the Solaris 7 locale name.
+                  if (LC_ALL=fr.UTF-8 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                    gt_cv_locale_fr_utf8=fr.UTF-8
+                  else
+                    # None found.
+                    gt_cv_locale_fr_utf8=none
+                  fi
+                fi
+              fi
+              ;;
+          esac
+        fi
+        rm -fr conftest*
+        ;;
+    esac
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_locale_fr_utf8" >&5
+printf "%s\n" "$gt_cv_locale_fr_utf8" >&6; }
+  LOCALE_FR_UTF8=$gt_cv_locale_fr_utf8
+  case $LOCALE_FR_UTF8 in #(
+    '' | *[[:space:]\"\$\'*[]*)
+            { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: invalid locale \"$LOCALE_FR_UTF8\"; assuming \"none\"" >&5
+printf "%s\n" "$as_me: WARNING: invalid locale \"$LOCALE_FR_UTF8\"; assuming \"none\"" >&2;}
+      LOCALE_FR_UTF8=none;;
+  esac
+
+
+      case "$host_os" in
+    *-musl* | midipix*)
+                  LC_COLLATE_IMPLEMENTED=false
+      LC_NUMERIC_IMPLEMENTED=false
+      LC_TIME_IMPLEMENTED=false
+      LC_MONETARY_IMPLEMENTED=false
+      ;;
+    *)
+      LC_COLLATE_IMPLEMENTED=true
+      LC_NUMERIC_IMPLEMENTED=true
+      LC_TIME_IMPLEMENTED=true
+      LC_MONETARY_IMPLEMENTED=true
+      ;;
+  esac
+
+
+
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a transitional chinese locale" >&5
+printf %s "checking for a transitional chinese locale... " >&6; }
+if test ${gt_cv_locale_zh_CN+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <stdlib.h>
+#include <time.h>
+#if HAVE_LANGINFO_CODESET
+# include <langinfo.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+struct tm t;
+char buf[16];
+int main ()
+{
+  /* On BeOS and Haiku, locales are not implemented in libc.  Rather, libintl
+     imitates locale dependent behaviour by looking at the environment
+     variables, and all locales use the UTF-8 encoding.  */
+#if defined __BEOS__ || defined __HAIKU__
+  return 1;
+#else
+  /* Check whether the given locale name is recognized by the system.  */
+# if defined _WIN32 && !defined __CYGWIN__
+  /* On native Windows, setlocale(category, "") looks at the system settings,
+     not at the environment variables.  Also, when an encoding suffix such
+     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
+     category of the locale to "C".  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
+      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+    return 1;
+# else
+  if (setlocale (LC_ALL, "") == NULL) return 1;
+# endif
+  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
+     On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
+     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
+     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
+     some unit tests fail.
+     On MirBSD 10, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "UTF-8".  */
+# if HAVE_LANGINFO_CODESET
+  {
+    const char *cs = nl_langinfo (CODESET);
+    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0
+        || strcmp (cs, "UTF-8") == 0)
+      return 1;
+  }
+# endif
+# ifdef __CYGWIN__
+  /* On Cygwin, avoid locale names without encoding suffix, because the
+     locale_charset() function relies on the encoding suffix.  Note that
+     LC_ALL is set on the command line.  */
+  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
+# endif
+  /* Check whether in a month name, no byte in the range 0x80..0x9F occurs.
+     This excludes the UTF-8 encoding (except on MirBSD).  */
+  {
+    const char *p;
+    t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
+    if (strftime (buf, sizeof (buf), "%B", &t) < 2) return 1;
+    for (p = buf; *p != '\0'; p++)
+      if ((unsigned char) *p >= 0x80 && (unsigned char) *p < 0xa0)
+        return 1;
+  }
+  /* Check whether a typical GB18030 multibyte sequence is recognized as a
+     single wide character.  This excludes the GB2312 and GBK encodings.  */
+  if (mblen ("\203\062\332\066", 5) != 4)
+    return 1;
+  return 0;
+#endif
+}
+
+_ACEOF
+    if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest$ac_exeext; then
+      case "$host_os" in
+        # Handle native Windows specially, because there setlocale() interprets
+        # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
+        # "fr" or "fra" as "French" or "French_France.1252",
+        # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
+        # "ja" as "Japanese" or "Japanese_Japan.932",
+        # and similar.
+        mingw* | windows*)
+          # Test for the hypothetical native Windows locale name.
+          if (LC_ALL=Chinese_China.54936 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_zh_CN=Chinese_China.54936
+          else
+            # None found.
+            gt_cv_locale_zh_CN=none
+          fi
+          ;;
+        solaris2.8)
+          # On Solaris 8, the locales zh_CN.GB18030, zh_CN.GBK, zh.GBK are
+          # broken. One witness is the test case in gl_MBRTOWC_SANITYCHECK.
+          # Another witness is that "LC_ALL=zh_CN.GB18030 bash -c true" dumps core.
+          gt_cv_locale_zh_CN=none
+          ;;
+        *)
+          # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+          # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
+          # configure script would override the LC_ALL setting. Likewise for
+          # LC_CTYPE, which is also set at the beginning of the configure script.
+          # Test for the locale name without encoding suffix.
+          if (LC_ALL=zh_CN LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_zh_CN=zh_CN
+          else
+            # Test for the locale name with explicit encoding suffix.
+            if (LC_ALL=zh_CN.GB18030 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+              gt_cv_locale_zh_CN=zh_CN.GB18030
+            else
+              # None found.
+              gt_cv_locale_zh_CN=none
+            fi
+          fi
+          ;;
+      esac
+    else
+      # If there was a link error, due to mblen(), the system is so old that
+      # it certainly doesn't have a chinese locale.
+      gt_cv_locale_zh_CN=none
+    fi
+    rm -fr conftest*
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_locale_zh_CN" >&5
+printf "%s\n" "$gt_cv_locale_zh_CN" >&6; }
+  LOCALE_ZH_CN=$gt_cv_locale_zh_CN
+  case $LOCALE_ZH_CN in #(
+    '' | *[[:space:]\"\$\'*[]*)
+            { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: invalid locale \"$LOCALE_ZH_CN\"; assuming \"none\"" >&5
+printf "%s\n" "$as_me: WARNING: invalid locale \"$LOCALE_ZH_CN\"; assuming \"none\"" >&2;}
+      LOCALE_ZH_CN=none;;
+  esac
+
+
+
+
+
+
+
+
+
+        if case "$host_os" in
+       mingw* | windows*) true ;;
+       *) test $ac_cv_func_mbsinit = yes ;;
+     esac \
+    && test $ac_cv_func_mbrtowc = yes; then
+
+
+
+
+     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether mbrtowc handles incomplete characters" >&5
+printf %s "checking whether mbrtowc handles incomplete characters... " >&6; }
+if test ${gl_cv_func_mbrtowc_incomplete_state+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+                  case "$host_os" in
+                     # Guess no on AIX and OSF/1.
+        aix* | osf*) gl_cv_func_mbrtowc_incomplete_state="guessing no" ;;
+                     # Guess yes otherwise.
+        *)           gl_cv_func_mbrtowc_incomplete_state="guessing yes" ;;
+      esac
+      if test $LOCALE_JA != none; then
+        if test "$cross_compiling" = yes
+then :
+  :
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+  if (setlocale (LC_ALL, "$LOCALE_JA") != NULL)
+    {
+      const char input[] = "B\217\253\344\217\251\316er"; /* "Büßer" */
+      mbstate_t state;
+      wchar_t wc;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2))
+        if (mbsinit (&state))
+          return 2;
+    }
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_mbrtowc_incomplete_state=yes
+else $as_nop
+  gl_cv_func_mbrtowc_incomplete_state=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+      else
+        if test $LOCALE_FR_UTF8 != none; then
+          if test "$cross_compiling" = yes
+then :
+  :
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+  if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
+    {
+      const char input[] = "B\303\274\303\237er"; /* "Büßer" */
+      mbstate_t state;
+      wchar_t wc;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2))
+        if (mbsinit (&state))
+          return 2;
+    }
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_mbrtowc_incomplete_state=yes
+else $as_nop
+  gl_cv_func_mbrtowc_incomplete_state=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+        fi
+      fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_mbrtowc_incomplete_state" >&5
+printf "%s\n" "$gl_cv_func_mbrtowc_incomplete_state" >&6; }
+
+
+
+
+     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether mbrtowc works as well as mbtowc" >&5
+printf %s "checking whether mbrtowc works as well as mbtowc... " >&6; }
+if test ${gl_cv_func_mbrtowc_sanitycheck+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+                  case "$host_os" in
+                    # Guess no on Solaris 8.
+        solaris2.8) gl_cv_func_mbrtowc_sanitycheck="guessing no" ;;
+                    # Guess yes otherwise.
+        *)          gl_cv_func_mbrtowc_sanitycheck="guessing yes" ;;
+      esac
+      if test $LOCALE_ZH_CN != none; then
+        if test "$cross_compiling" = yes
+then :
+  :
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+  /* This fails on Solaris 8:
+     mbrtowc returns 2, and sets wc to 0x00F0.
+     mbtowc returns 4 (correct) and sets wc to 0x5EDC.  */
+  if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL)
+    {
+      char input[] = "B\250\271\201\060\211\070er"; /* "Büßer" */
+      mbstate_t state;
+      wchar_t wc;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, input + 3, 6, &state) != 4
+          && mbtowc (&wc, input + 3, 6) == 4)
+        return 2;
+    }
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_mbrtowc_sanitycheck=yes
+else $as_nop
+  gl_cv_func_mbrtowc_sanitycheck=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+      fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_mbrtowc_sanitycheck" >&5
+printf "%s\n" "$gl_cv_func_mbrtowc_sanitycheck" >&6; }
+
+    REPLACE_MBSTATE_T=0
+    case "$gl_cv_func_mbrtowc_incomplete_state" in
+      *yes) ;;
+      *) REPLACE_MBSTATE_T=1 ;;
+    esac
+    case "$gl_cv_func_mbrtowc_sanitycheck" in
+      *yes) ;;
+      *) REPLACE_MBSTATE_T=1 ;;
+    esac
+  else
+    REPLACE_MBSTATE_T=1
+  fi
+
+
+    ac_fn_check_decl "$LINENO" "mbrtoc32" "ac_cv_have_decl_mbrtoc32" "#ifdef __HAIKU__
+       #include <stdint.h>
+      #endif
+      #include <uchar.h>
+
+" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_mbrtoc32" = xyes
+then :
+
+fi
+  if test $ac_cv_have_decl_mbrtoc32 = yes; then
+            { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for mbrtoc32" >&5
+printf %s "checking for mbrtoc32... " >&6; }
+if test ${gl_cv_func_mbrtoc32+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdlib.h>
+              #ifdef __HAIKU__
+               #include <stdint.h>
+              #endif
+              #include <uchar.h>
+
+int
+main (void)
+{
+char32_t c;
+              return mbrtoc32 (&c, "", 1, NULL) == 0;
+
+  ;
+  return 0;
+}
+
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  gl_cv_func_mbrtoc32=yes
+else $as_nop
+  gl_cv_func_mbrtoc32=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_mbrtoc32" >&5
+printf "%s\n" "$gl_cv_func_mbrtoc32" >&6; }
+  else
+    gl_cv_func_mbrtoc32=no
+  fi
+
+
+
+
+
+
+
+     if test $GNULIBHEADERS_OVERRIDE_CHAR32_T = 1 || test $gl_cv_func_mbrtoc32 = no; then
+    HAVE_WORKING_MBRTOC32=0
+  else
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether mbrtoc32 works as well as mbrtowc" >&5
+printf %s "checking whether mbrtoc32 works as well as mbrtowc... " >&6; }
+if test ${gl_cv_func_mbrtoc32_sanitycheck+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+                        case "$host_os" in
+          # Guess no on FreeBSD, Solaris, native Windows.
+          freebsd* | midnightbsd* | solaris* | mingw* | windows*)
+            gl_cv_func_mbrtoc32_sanitycheck="guessing no"
+            ;;
+          # Guess yes otherwise.
+          *)
+            gl_cv_func_mbrtoc32_sanitycheck="guessing yes"
+            ;;
+        esac
+        if test $LOCALE_FR != none || test $LOCALE_ZH_CN != none; then
+          if test "$cross_compiling" = yes
+then :
+  :
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wchar.h>
+#ifdef __HAIKU__
+ #include <stdint.h>
+#endif
+#include <uchar.h>
+int main ()
+{
+  int result = 0;
+  /* This fails on native Windows:
+     mbrtoc32 returns (size_t)-1.
+     mbrtowc returns 1 (correct).  */
+  if (strcmp ("$LOCALE_FR", "none") != 0
+      && setlocale (LC_ALL, "$LOCALE_FR") != NULL)
+    {
+      mbstate_t state;
+      wchar_t wc = (wchar_t) 0xBADFACE;
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, "\374", 1, &state) == 1)
+        {
+          char32_t c32 = (wchar_t) 0xBADFACE;
+          memset (&state, '\0', sizeof (mbstate_t));
+          if (mbrtoc32 (&c32, "\374", 1, &state) != 1)
+            result |= 1;
+        }
+    }
+  /* This fails on FreeBSD 13.0 and Solaris 11.4:
+     mbrtoc32 returns (size_t)-2 or (size_t)-1.
+     mbrtowc returns 4 (correct).  */
+  if (strcmp ("$LOCALE_ZH_CN", "none") != 0
+      && setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL)
+    {
+      mbstate_t state;
+      wchar_t wc = (wchar_t) 0xBADFACE;
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, "\224\071\375\067", 4, &state) == 4)
+        {
+          char32_t c32 = (wchar_t) 0xBADFACE;
+          memset (&state, '\0', sizeof (mbstate_t));
+          if (mbrtoc32 (&c32, "\224\071\375\067", 4, &state) != 4)
+            result |= 2;
+        }
+    }
+  return result;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_mbrtoc32_sanitycheck=yes
+else $as_nop
+  gl_cv_func_mbrtoc32_sanitycheck=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+        fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_mbrtoc32_sanitycheck" >&5
+printf "%s\n" "$gl_cv_func_mbrtoc32_sanitycheck" >&6; }
+    case "$gl_cv_func_mbrtoc32_sanitycheck" in
+      *yes)
+        HAVE_WORKING_MBRTOC32=1
+
+printf "%s\n" "#define HAVE_WORKING_MBRTOC32 1" >>confdefs.h
+
+        ;;
+      *) HAVE_WORKING_MBRTOC32=0 ;;
+    esac
+  fi
+
+
+
   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether malloc is ptrdiff_t safe" >&5
 printf %s "checking whether malloc is ptrdiff_t safe... " >&6; }
 if test ${gl_cv_malloc_ptrdiff+y}
@@ -22182,7 +23840,7 @@ then :
 else $as_nop
 
                                     case "$host_os" in
-        mingw*)
+        mingw* | windows*)
           gl_cv_func_malloc_posix=no ;;
         irix* | solaris*)
 
@@ -22235,7 +23893,7 @@ then :
           *-gnu* | gnu*)
             # Guess yes on glibc systems.
             gl_cv_func_lstat_dereferences_slashed_symlink="guessing yes" ;;
-          mingw*)
+          mingw* | windows*)
             # Guess no on native Windows.
             gl_cv_func_lstat_dereferences_slashed_symlink="guessing no" ;;
           *)
@@ -22347,16 +24005,16 @@ else $as_nop
     if test "$cross_compiling" = yes
 then :
   case "$host_os" in
-                       # Guess yes on glibc systems.
-        *-gnu* | gnu*) gl_cv_func_realpath_works="guessing yes" ;;
-                       # Guess 'nearly' on musl systems.
-        *-musl*)       gl_cv_func_realpath_works="guessing nearly" ;;
-                       # Guess no on Cygwin.
-        cygwin*)       gl_cv_func_realpath_works="guessing no" ;;
-                       # Guess no on native Windows.
-        mingw*)        gl_cv_func_realpath_works="guessing no" ;;
-                       # If we don't know, obey --enable-cross-guesses.
-        *)             gl_cv_func_realpath_works="$gl_cross_guess_normal" ;;
+                           # Guess yes on glibc systems.
+        *-gnu* | gnu*)     gl_cv_func_realpath_works="guessing yes" ;;
+                           # Guess 'nearly' on musl systems.
+        *-musl*)           gl_cv_func_realpath_works="guessing nearly" ;;
+                           # Guess no on Cygwin.
+        cygwin*)           gl_cv_func_realpath_works="guessing no" ;;
+                           # Guess no on native Windows.
+        mingw* | windows*) gl_cv_func_realpath_works="guessing no" ;;
+                           # If we don't know, obey --enable-cross-guesses.
+        *)                 gl_cv_func_realpath_works="$gl_cross_guess_normal" ;;
       esac
 
 else $as_nop
@@ -22652,8 +24310,8 @@ printf "%s\n" "#define HAVE_FACCESSAT 1" >>confdefs.h
 
 
   case "$host_os" in
-    mingw*) ;;
-    *)      ac_fn_c_check_func "$LINENO" "getcwd" "ac_cv_func_getcwd"
+    mingw* | windows*) ;;
+    *) ac_fn_c_check_func "$LINENO" "getcwd" "ac_cv_func_getcwd"
 if test "x$ac_cv_func_getcwd" = xyes
 then :
   printf "%s\n" "#define HAVE_GETCWD 1" >>confdefs.h
@@ -23068,6 +24726,7 @@ fi
   REPLACE_EXECVP=0;
   REPLACE_EXECVPE=0;
   REPLACE_FACCESSAT=0;
+  REPLACE_FCHDIR=0;
   REPLACE_FCHOWNAT=0;
   REPLACE_FDATASYNC=0;
   REPLACE_FTRUNCATE=0;
@@ -23214,14 +24873,14 @@ else $as_nop
   if test "$cross_compiling" = yes
 then :
   case "$host_os" in # ((
-                           # Guess yes on Linux systems.
-          linux-* | linux) ac_cv_func_chown_works="guessing yes" ;;
-                           # Guess yes on glibc systems.
-          *-gnu* | gnu*)   ac_cv_func_chown_works="guessing yes" ;;
-                           # Guess no on native Windows.
-          mingw*)          ac_cv_func_chown_works="guessing no" ;;
-                           # If we don't know, obey --enable-cross-guesses.
-          *)               ac_cv_func_chown_works="$gl_cross_guess_normal" ;;
+                             # Guess yes on Linux systems.
+          linux-* | linux)   ac_cv_func_chown_works="guessing yes" ;;
+                             # Guess yes on glibc systems.
+          *-gnu* | gnu*)     ac_cv_func_chown_works="guessing yes" ;;
+                             # Guess no on native Windows.
+          mingw* | windows*) ac_cv_func_chown_works="guessing no" ;;
+                             # If we don't know, obey --enable-cross-guesses.
+          *)                 ac_cv_func_chown_works="$gl_cross_guess_normal" ;;
         esac
 
 else $as_nop
@@ -23596,8 +25255,8 @@ fi
 
 
   case "$host_os" in
-    mingw*) DIR_HAS_FD_MEMBER=0 ;;
-    *)      DIR_HAS_FD_MEMBER=1 ;;
+    mingw* | windows* | os2*) DIR_HAS_FD_MEMBER=0 ;;
+    *)                        DIR_HAS_FD_MEMBER=1 ;;
   esac
 
 
@@ -23675,7 +25334,7 @@ _ACEOF
   esac
 
   case "$host_os" in
-    mingw*)
+    mingw* | windows*)
                                           gl_dirsep_regex='[/\\]'
       ;;
     *)
@@ -23766,7 +25425,7 @@ _ACEOF
   esac
 
   case "$host_os" in
-    mingw*)
+    mingw* | windows*)
                                           gl_dirsep_regex='[/\\]'
       ;;
     *)
@@ -23988,7 +25647,7 @@ _ACEOF
   esac
 
   case "$host_os" in
-    mingw*)
+    mingw* | windows*)
                                           gl_dirsep_regex='[/\\]'
       ;;
     *)
@@ -24295,7 +25954,7 @@ _ACEOF
   esac
 
   case "$host_os" in
-    mingw*)
+    mingw* | windows*)
                                           gl_dirsep_regex='[/\\]'
       ;;
     *)
@@ -24670,9 +26329,9 @@ else $as_nop
   if test "$cross_compiling" = yes
 then :
   case "$host_os" in
-                  # Guess 'no' on native Windows.
-          mingw*) gl_cv_header_working_fcntl_h='no' ;;
-          *)      gl_cv_header_working_fcntl_h=cross-compiling ;;
+                             # Guess 'no' on native Windows.
+          mingw* | windows*) gl_cv_header_working_fcntl_h='no' ;;
+          *)                 gl_cv_header_working_fcntl_h=cross-compiling ;;
         esac
 
 else $as_nop
@@ -24891,7 +26550,7 @@ _ACEOF
   esac
 
   case "$host_os" in
-    mingw*)
+    mingw* | windows*)
                                           gl_dirsep_regex='[/\\]'
       ;;
     *)
@@ -24996,7 +26655,7 @@ _ACEOF
   esac
 
   case "$host_os" in
-    mingw*)
+    mingw* | windows*)
                                           gl_dirsep_regex='[/\\]'
       ;;
     *)
@@ -25074,46 +26733,6 @@ printf "%s\n" "$gl_cv_next_fnmatch_h" >&6; }
 
 
 
-   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for mbstate_t" >&5
-printf %s "checking for mbstate_t... " >&6; }
-if test ${ac_cv_type_mbstate_t+y}
-then :
-  printf %s "(cached) " >&6
-else $as_nop
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-$ac_includes_default
-             #include <wchar.h>
-int
-main (void)
-{
-mbstate_t x; return sizeof x;
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"
-then :
-  ac_cv_type_mbstate_t=yes
-else $as_nop
-  ac_cv_type_mbstate_t=no
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_type_mbstate_t" >&5
-printf "%s\n" "$ac_cv_type_mbstate_t" >&6; }
-   if test $ac_cv_type_mbstate_t = yes; then
-
-printf "%s\n" "#define HAVE_MBSTATE_T 1" >>confdefs.h
-
-   else
-
-printf "%s\n" "#define mbstate_t int" >>confdefs.h
-
-   fi
-
-
-
     HAVE_FCHMODAT=1;
   HAVE_FSTATAT=1;
   HAVE_FUTIMENS=1;
@@ -25187,7 +26806,7 @@ fi
 
 
   case "$host_os" in
-    mingw*)
+    mingw* | windows*)
                         { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for 64-bit off_t" >&5
 printf %s "checking for 64-bit off_t... " >&6; }
 if test ${gl_cv_type_off_t_64+y}
@@ -25305,7 +26924,7 @@ _ACEOF
   esac
 
   case "$host_os" in
-    mingw*)
+    mingw* | windows*)
                                           gl_dirsep_regex='[/\\]'
       ;;
     *)
@@ -25385,7 +27004,7 @@ fi
 
 
   case "$host_os" in
-    mingw*)
+    mingw* | windows*)
       ac_fn_c_check_header_compile "$LINENO" "sdkddkver.h" "ac_cv_header_sdkddkver_h" "$ac_includes_default"
 if test "x$ac_cv_header_sdkddkver_h" = xyes
 then :
@@ -25960,7 +27579,7 @@ printf "%s\n" "#define HAVE_DECL_GETLOGIN $ac_have_decl" >>confdefs.h
 
 
   case $host_os in
-    mingw*)
+    mingw* | windows*)
       GETLOGIN_LIB='-ladvapi32' ;;
     *)
       GETLOGIN_LIB= ;;
@@ -26008,7 +27627,7 @@ _ACEOF
   esac
 
   case "$host_os" in
-    mingw*)
+    mingw* | windows*)
                                           gl_dirsep_regex='[/\\]'
       ;;
     *)
@@ -26256,8 +27875,8 @@ fi
           fi
         else
           case "$host_os" in
-            darwin* | aix* | mingw*) gl_cv_func_getopt_posix="guessing no";;
-            *)                       gl_cv_func_getopt_posix="guessing yes";;
+            darwin* | aix* | mingw* | windows*) gl_cv_func_getopt_posix="guessing no";;
+            *)                                  gl_cv_func_getopt_posix="guessing yes";;
           esac
         fi
 
@@ -26702,7 +28321,7 @@ _ACEOF
   esac
 
   case "$host_os" in
-    mingw*)
+    mingw* | windows*)
                                           gl_dirsep_regex='[/\\]'
       ;;
     *)
@@ -26913,7 +28532,7 @@ _ACEOF
   esac
 
   case "$host_os" in
-    mingw*)
+    mingw* | windows*)
                                           gl_dirsep_regex='[/\\]'
       ;;
     *)
@@ -27045,8 +28664,8 @@ rm -f core conftest.err conftest.$ac_objext conftest.beam \
         LIBS=$save_LIBS
         test $gl_pthread_api = yes && break
       done
-      echo "$as_me:27048: gl_pthread_api=$gl_pthread_api" >&5
-      echo "$as_me:27049: LIBPTHREAD=$LIBPTHREAD" >&5
+      echo "$as_me:28667: gl_pthread_api=$gl_pthread_api" >&5
+      echo "$as_me:28668: LIBPTHREAD=$LIBPTHREAD" >&5
 
       gl_pthread_in_glibc=no
       # On Linux with glibc >= 2.34, libc contains the fully functional
@@ -27072,7 +28691,7 @@ rm -rf conftest*
 
           ;;
       esac
-      echo "$as_me:27075: gl_pthread_in_glibc=$gl_pthread_in_glibc" >&5
+      echo "$as_me:28694: gl_pthread_in_glibc=$gl_pthread_in_glibc" >&5
 
       # Test for libpthread by looking for pthread_kill. (Not pthread_self,
       # since it is defined as a macro on OSF/1.)
@@ -27134,6 +28753,53 @@ printf "%s\n" "#define PTHREAD_IN_USE_DETECTION_HARD 1" >>confdefs.h
              esac
            fi
 
+else $as_nop
+             { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for pthread_kill in -lthr" >&5
+printf %s "checking for pthread_kill in -lthr... " >&6; }
+if test ${ac_cv_lib_thr_pthread_kill+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lthr  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+char pthread_kill ();
+int
+main (void)
+{
+return pthread_kill ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_lib_thr_pthread_kill=yes
+else $as_nop
+  ac_cv_lib_thr_pthread_kill=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_thr_pthread_kill" >&5
+printf "%s\n" "$ac_cv_lib_thr_pthread_kill" >&6; }
+if test "x$ac_cv_lib_thr_pthread_kill" = xyes
+then :
+  if test $gl_pthread_in_glibc = yes; then
+                LIBPMULTITHREAD=
+              else
+                LIBPMULTITHREAD=-lthr
+              fi
+
+fi
+
+
 fi
 
       elif test $gl_pthread_api != yes; then
@@ -27226,7 +28892,7 @@ fi
 
         fi
       fi
-      echo "$as_me:27229: LIBPMULTITHREAD=$LIBPMULTITHREAD" >&5
+      echo "$as_me:28895: LIBPMULTITHREAD=$LIBPMULTITHREAD" >&5
     fi
     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether POSIX threads API is available" >&5
 printf %s "checking whether POSIX threads API is available... " >&6; }
@@ -27389,7 +29055,7 @@ rm -rf conftest*
 
         ;;
        # Guess yes on glibc, HP-UX, IRIX, Solaris, native Windows.
-       *-gnu* | gnu* | hpux* | irix* | solaris* | mingw*)
+       *-gnu* | gnu* | hpux* | irix* | solaris* | mingw* | windows*)
          gl_cv_func_setlocale_null_all_mtsafe=yes ;;
        # If we don't know, obey --enable-cross-guesses.
        *)
@@ -27400,7 +29066,7 @@ fi
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_setlocale_null_all_mtsafe" >&5
 printf "%s\n" "$gl_cv_func_setlocale_null_all_mtsafe" >&6; }
     case "$host_os" in
-    mingw*) ;;
+    mingw* | windows*) ;;
     *)
       if test $gl_pthread_api = no && test $ac_cv_header_threads_h = no; then
         gl_cv_func_setlocale_null_all_mtsafe="trivially yes"
@@ -27426,7 +29092,7 @@ else $as_nop
        openbsd* | aix*)
          gl_cv_func_setlocale_null_one_mtsafe=no ;;
        # Guess yes on glibc, musl libc, macOS, FreeBSD, NetBSD, HP-UX, IRIX, Solaris, Haiku, Cygwin, native Windows.
-       *-gnu* | gnu* | *-musl* | midipix* | darwin* | freebsd* | midnightbsd* | netbsd* | hpux* | irix* | solaris* | haiku* | cygwin* | mingw*)
+       *-gnu* | gnu* | *-musl* | midipix* | darwin* | freebsd* | midnightbsd* | netbsd* | hpux* | irix* | solaris* | haiku* | cygwin* | mingw* | windows*)
          gl_cv_func_setlocale_null_one_mtsafe=yes ;;
        # If we don't know, obey --enable-cross-guesses.
        *)
@@ -27437,7 +29103,7 @@ fi
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_setlocale_null_one_mtsafe" >&5
 printf "%s\n" "$gl_cv_func_setlocale_null_one_mtsafe" >&6; }
     case "$host_os" in
-    mingw*) ;;
+    mingw* | windows*) ;;
     *)
       if test $gl_pthread_api = no && test $ac_cv_header_threads_h = no; then
         gl_cv_func_setlocale_null_one_mtsafe="trivially yes"
@@ -27454,7 +29120,9 @@ printf "%s\n" "#define SETLOCALE_NULL_ONE_MTSAFE $SETLOCALE_NULL_ONE_MTSAFE" >>c
 
     if test $SETLOCALE_NULL_ALL_MTSAFE = 0 || test $SETLOCALE_NULL_ONE_MTSAFE = 0; then
     case "$host_os" in
-      mingw*) SETLOCALE_NULL_LIB= ;;
+      mingw* | windows*)
+        SETLOCALE_NULL_LIB=
+        ;;
       *)
 
 
@@ -27465,7 +29133,7 @@ then :
   printf %s "(cached) " >&6
 else $as_nop
   case "$host_os" in
-       cygwin* | mingw*)
+       cygwin* | mingw* | windows*)
                                              gl_cv_have_weak="guessing no"
          ;;
        *)
@@ -27617,7 +29285,7 @@ _ACEOF
   esac
 
   case "$host_os" in
-    mingw*)
+    mingw* | windows*)
                                           gl_dirsep_regex='[/\\]'
       ;;
     *)
@@ -27928,7 +29596,7 @@ _ACEOF
   esac
 
   case "$host_os" in
-    mingw*)
+    mingw* | windows*)
                                           gl_dirsep_regex='[/\\]'
       ;;
     *)
@@ -28082,7 +29750,10 @@ intmax_t i = INTMAX_MAX;
 uintmax_t j = UINTMAX_MAX;
 
 /* Check that SIZE_MAX has the correct type, if possible.  */
-#if 201112 <= __STDC_VERSION__
+/* ISO C 11 mandates _Generic, but GCC versions < 4.9 lack it.  */
+#if 201112 <= __STDC_VERSION__ \
+    && (!defined __GNUC__ || 4 < __GNUC__ + (9 <= __GNUC_MINOR__) \
+        || defined __clang__)
 int k = _Generic (SIZE_MAX, size_t: 0);
 #elif (2 <= __GNUC__ || 4 <= __clang_major__ || defined __IBM__TYPEOF__ \
        || (0x5110 <= __SUNPRO_C && !__STDC__))
@@ -28163,10 +29834,10 @@ then :
                                                     if test "$cross_compiling" = yes
 then :
   case "$host_os" in
-                         # Guess yes on native Windows.
-                 mingw*) gl_cv_header_working_stdint_h="guessing yes" ;;
-                         # In general, assume it works.
-                 *)      gl_cv_header_working_stdint_h="guessing yes" ;;
+                                    # Guess yes on native Windows.
+                 mingw* | windows*) gl_cv_header_working_stdint_h="guessing yes" ;;
+                                    # In general, assume it works.
+                 *)                 gl_cv_header_working_stdint_h="guessing yes" ;;
                esac
 
 else $as_nop
@@ -28731,7 +30402,7 @@ _ACEOF
   esac
 
   case "$host_os" in
-    mingw*)
+    mingw* | windows*)
                                           gl_dirsep_regex='[/\\]'
       ;;
     *)
@@ -28943,7 +30614,7 @@ _ACEOF
   esac
 
   case "$host_os" in
-    mingw*)
+    mingw* | windows*)
                                           gl_dirsep_regex='[/\\]'
       ;;
     *)
@@ -29117,6 +30788,421 @@ fi
 
 
 
+    HAVE_ISWBLANK=1;
+  HAVE_WCTYPE_T=1;
+  HAVE_WCTRANS_T=1;
+  REPLACE_ISWBLANK=0;
+  REPLACE_ISWDIGIT=0;
+  REPLACE_ISWPUNCT=0;
+  REPLACE_ISWXDIGIT=0;
+  REPLACE_WCTRANS=0;
+  REPLACE_WCTYPE=0;
+
+
+
+
+
+  if test $ac_cv_header_crtdefs_h = yes; then
+    HAVE_CRTDEFS_H=1
+  else
+    HAVE_CRTDEFS_H=0
+  fi
+
+
+
+
+
+
+
+
+  if test $ac_cv_func_iswcntrl = yes; then
+    HAVE_ISWCNTRL=1
+  else
+    HAVE_ISWCNTRL=0
+  fi
+
+
+
+  if test $gt_cv_c_wint_t = yes; then
+    HAVE_WINT_T=1
+  else
+    HAVE_WINT_T=0
+  fi
+
+
+
+
+
+
+
+
+
+
+
+
+
+     if test $gl_cv_have_include_next = yes; then
+       gl_cv_next_wctype_h='<'wctype.h'>'
+     else
+       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking absolute name of <wctype.h>" >&5
+printf %s "checking absolute name of <wctype.h>... " >&6; }
+if test ${gl_cv_next_wctype_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+             if test $ac_cv_header_wctype_h = yes; then
+
+
+
+
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <wctype.h>
+_ACEOF
+                case "$host_os" in
+    aix*) gl_absname_cpp="$ac_cpp -C" ;;
+    *)    gl_absname_cpp="$ac_cpp" ;;
+  esac
+
+  case "$host_os" in
+    mingw* | windows*)
+                                          gl_dirsep_regex='[/\\]'
+      ;;
+    *)
+      gl_dirsep_regex='\/'
+      ;;
+  esac
+      gl_make_literal_regex_sed='s,[]$^\\.*/[],\\&,g'
+  gl_header_literal_regex=`echo 'wctype.h' \
+                           | sed -e "$gl_make_literal_regex_sed"`
+  gl_absolute_header_sed="/${gl_dirsep_regex}${gl_header_literal_regex}/"'{
+      s/.*"\(.*'"${gl_dirsep_regex}${gl_header_literal_regex}"'\)".*/\1/
+      s|^/[^/]|//&|
+      p
+      q
+    }'
+
+        gl_cv_absolute_wctype_h=`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&5 |
+  sed -n "$gl_absolute_header_sed"`
+
+          gl_header=$gl_cv_absolute_wctype_h
+          gl_cv_next_wctype_h='"'$gl_header'"'
+          else
+               gl_cv_next_wctype_h='<'wctype.h'>'
+             fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_next_wctype_h" >&5
+printf "%s\n" "$gl_cv_next_wctype_h" >&6; }
+     fi
+     NEXT_WCTYPE_H=$gl_cv_next_wctype_h
+
+     if test $gl_cv_have_include_next = yes || test $gl_cv_have_include_next = buggy; then
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include_next'
+       gl_next_as_first_directive='<'wctype.h'>'
+     else
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include'
+       gl_next_as_first_directive=$gl_cv_next_wctype_h
+     fi
+     NEXT_AS_FIRST_DIRECTIVE_WCTYPE_H=$gl_next_as_first_directive
+
+
+
+
+  if test $ac_cv_header_wctype_h = yes; then
+    if test $ac_cv_func_iswcntrl = yes; then
+                  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether iswcntrl works" >&5
+printf %s "checking whether iswcntrl works... " >&6; }
+if test ${gl_cv_func_iswcntrl_works+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+          if test "$cross_compiling" = yes
+then :
+               cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdlib.h>
+                          #if __GNU_LIBRARY__ == 1
+                          Linux libc5 i18n is broken.
+                          #endif
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_func_iswcntrl_works="guessing yes"
+else $as_nop
+  gl_cv_func_iswcntrl_works="guessing no"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+               #include <wchar.h>
+               #include <wctype.h>
+               int main () { return iswprint ('x') == 0; }
+
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_iswcntrl_works=yes
+else $as_nop
+  gl_cv_func_iswcntrl_works=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_iswcntrl_works" >&5
+printf "%s\n" "$gl_cv_func_iswcntrl_works" >&6; }
+    fi
+    HAVE_WCTYPE_H=1
+  else
+    HAVE_WCTYPE_H=0
+  fi
+
+
+  if test $GNULIBHEADERS_OVERRIDE_WINT_T = 1; then
+    REPLACE_ISWCNTRL=1
+  else
+    case "$gl_cv_func_iswcntrl_works" in
+      *yes) REPLACE_ISWCNTRL=0 ;;
+      *)    REPLACE_ISWCNTRL=1 ;;
+    esac
+  fi
+
+
+  if test $HAVE_ISWCNTRL = 0 || test $REPLACE_ISWCNTRL = 1; then
+        :
+  fi
+
+  if test $REPLACE_ISWCNTRL = 1; then
+    REPLACE_TOWLOWER=1
+  else
+    ac_fn_c_check_func "$LINENO" "towlower" "ac_cv_func_towlower"
+if test "x$ac_cv_func_towlower" = xyes
+then :
+  printf "%s\n" "#define HAVE_TOWLOWER 1" >>confdefs.h
+
+fi
+
+    if test $ac_cv_func_towlower = yes; then
+      REPLACE_TOWLOWER=0
+    else
+      ac_fn_check_decl "$LINENO" "towlower" "ac_cv_have_decl_towlower" "#include <wchar.h>
+          #if HAVE_WCTYPE_H
+          # include <wctype.h>
+          #endif
+
+" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_towlower" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_TOWLOWER $ac_have_decl" >>confdefs.h
+
+      if test $ac_cv_have_decl_towlower = yes; then
+                                REPLACE_TOWLOWER=1
+      else
+        REPLACE_TOWLOWER=0
+      fi
+    fi
+  fi
+
+
+  if test $HAVE_ISWCNTRL = 0 || test $REPLACE_TOWLOWER = 1; then
+        :
+  fi
+
+          { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for wctype_t" >&5
+printf %s "checking for wctype_t... " >&6; }
+if test ${gl_cv_type_wctype_t+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <wchar.h>
+            #if HAVE_WCTYPE_H
+            # include <wctype.h>
+            #endif
+            wctype_t a;
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_type_wctype_t=yes
+else $as_nop
+  gl_cv_type_wctype_t=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_type_wctype_t" >&5
+printf "%s\n" "$gl_cv_type_wctype_t" >&6; }
+  if test $gl_cv_type_wctype_t = no; then
+    HAVE_WCTYPE_T=0
+  fi
+
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for wctrans_t" >&5
+printf %s "checking for wctrans_t... " >&6; }
+if test ${gl_cv_type_wctrans_t+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <wchar.h>
+            #include <wctype.h>
+            wctrans_t a;
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_type_wctrans_t=yes
+else $as_nop
+  gl_cv_type_wctrans_t=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_type_wctrans_t" >&5
+printf "%s\n" "$gl_cv_type_wctrans_t" >&6; }
+  if test $gl_cv_type_wctrans_t = no; then
+    HAVE_WCTRANS_T=0
+  fi
+
+
+
+
+
+
+
+  GL_GNULIB_ISWBLANK=0
+
+
+
+  GL_GNULIB_ISWDIGIT=0
+
+
+
+  GL_GNULIB_ISWPUNCT=0
+
+
+
+  GL_GNULIB_ISWXDIGIT=0
+
+
+
+  GL_GNULIB_WCTYPE=0
+
+
+
+  GL_GNULIB_ISWCTYPE=0
+
+
+
+  GL_GNULIB_WCTRANS=0
+
+
+
+  GL_GNULIB_TOWCTRANS=0
+
+
+
+
+
+
+     HAVE_WCTYPE=$HAVE_WCTYPE_T
+  if test $HAVE_WCTYPE = 1; then
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether wctype supports the \"blank\" and \"punct\" character classes" >&5
+printf %s "checking whether wctype supports the \"blank\" and \"punct\" character classes... " >&6; }
+if test ${gl_cv_func_wctype_works+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+                               # Guess no on native Windows.
+            mingw* | windows*) gl_cv_func_wctype_works="guessing no" ;;
+                               # Guess no on Android.
+            android*)          gl_cv_func_wctype_works="guessing no" ;;
+                               # Guess yes otherwise.
+            *)                 gl_cv_func_wctype_works="guessing yes" ;;
+          esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+            #include <ctype.h>
+            #include <wchar.h>
+            #include <wctype.h>
+            int main ()
+            {
+              /* This test fails on mingw.  */
+              if (wctype ("blank") == (wctype_t)0)
+                return 1;
+              /* This test fails on MSVC 14.  */
+              if ((! iswctype ('\t', wctype ("blank"))) != (! iswblank ('\t')))
+                return 2;
+              /* This test fails on Android 11.  */
+              if ((! iswctype ('\`', wctype ("punct"))) != (! ispunct ('\`')))
+                return 4;
+              return 0;
+            }
+
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_wctype_works=yes
+else $as_nop
+  gl_cv_func_wctype_works=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_wctype_works" >&5
+printf "%s\n" "$gl_cv_func_wctype_works" >&6; }
+    case "$gl_cv_func_wctype_works" in
+      *yes) ;;
+      *) REPLACE_WCTYPE=1 ;;
+    esac
+  fi
+
+
     HAVE_NL_LANGINFO=1;
   REPLACE_NL_LANGINFO=0;
 
@@ -29160,7 +31246,7 @@ _ACEOF
   esac
 
   case "$host_os" in
-    mingw*)
+    mingw* | windows*)
                                           gl_dirsep_regex='[/\\]'
       ;;
     *)
@@ -29618,7 +31704,7 @@ _ACEOF
   esac
 
   case "$host_os" in
-    mingw*)
+    mingw* | windows*)
                                           gl_dirsep_regex='[/\\]'
       ;;
     *)
@@ -29797,7 +31883,9 @@ fi
 printf "%s\n" "$gl_cv_sys_struct_lconv_ok" >&6; }
   if test $gl_cv_sys_struct_lconv_ok = no; then
             case "$host_os" in
-      mingw*)
+      windows*-msvc*)
+        ;;
+      mingw* | windows*)
         cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -29850,7 +31938,7 @@ _ACEOF
   esac
 
   case "$host_os" in
-    mingw*)
+    mingw* | windows*)
                                           gl_dirsep_regex='[/\\]'
       ;;
     *)
@@ -29936,7 +32024,7 @@ then :
   printf %s "(cached) " >&6
 else $as_nop
   case "$host_os" in
-       cygwin* | mingw*)
+       cygwin* | mingw* | windows*)
                                              gl_cv_have_weak="guessing no"
          ;;
        *)
@@ -30106,8 +32194,8 @@ rm -f core conftest.err conftest.$ac_objext conftest.beam \
         LIBS=$save_LIBS
         test $gl_pthread_api = yes && break
       done
-      echo "$as_me:30109: gl_pthread_api=$gl_pthread_api" >&5
-      echo "$as_me:30110: LIBPTHREAD=$LIBPTHREAD" >&5
+      echo "$as_me:32197: gl_pthread_api=$gl_pthread_api" >&5
+      echo "$as_me:32198: LIBPTHREAD=$LIBPTHREAD" >&5
 
       gl_pthread_in_glibc=no
       # On Linux with glibc >= 2.34, libc contains the fully functional
@@ -30133,7 +32221,7 @@ rm -rf conftest*
 
           ;;
       esac
-      echo "$as_me:30136: gl_pthread_in_glibc=$gl_pthread_in_glibc" >&5
+      echo "$as_me:32224: gl_pthread_in_glibc=$gl_pthread_in_glibc" >&5
 
       # Test for libpthread by looking for pthread_kill. (Not pthread_self,
       # since it is defined as a macro on OSF/1.)
@@ -30195,6 +32283,53 @@ printf "%s\n" "#define PTHREAD_IN_USE_DETECTION_HARD 1" >>confdefs.h
              esac
            fi
 
+else $as_nop
+             { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for pthread_kill in -lthr" >&5
+printf %s "checking for pthread_kill in -lthr... " >&6; }
+if test ${ac_cv_lib_thr_pthread_kill+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lthr  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+char pthread_kill ();
+int
+main (void)
+{
+return pthread_kill ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_lib_thr_pthread_kill=yes
+else $as_nop
+  ac_cv_lib_thr_pthread_kill=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_thr_pthread_kill" >&5
+printf "%s\n" "$ac_cv_lib_thr_pthread_kill" >&6; }
+if test "x$ac_cv_lib_thr_pthread_kill" = xyes
+then :
+  if test $gl_pthread_in_glibc = yes; then
+                LIBPMULTITHREAD=
+              else
+                LIBPMULTITHREAD=-lthr
+              fi
+
+fi
+
+
 fi
 
       elif test $gl_pthread_api != yes; then
@@ -30287,7 +32422,7 @@ fi
 
         fi
       fi
-      echo "$as_me:30290: LIBPMULTITHREAD=$LIBPMULTITHREAD" >&5
+      echo "$as_me:32425: LIBPMULTITHREAD=$LIBPMULTITHREAD" >&5
     fi
     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether POSIX threads API is available" >&5
 printf %s "checking whether POSIX threads API is available... " >&6; }
@@ -30457,7 +32592,7 @@ printf "%s\n" "#define PTHREAD_IN_USE_DETECTION_HARD 1" >>confdefs.h
 
 
     case "$host_os" in
-      mingw*)
+      mingw* | windows*)
         LIBSTDTHREAD=
         ;;
       *)
@@ -30517,8 +32652,8 @@ rm -f core conftest.err conftest.$ac_objext conftest.beam \
         LIBS=$save_LIBS
         test $gl_pthread_api = yes && break
       done
-      echo "$as_me:30520: gl_pthread_api=$gl_pthread_api" >&5
-      echo "$as_me:30521: LIBPTHREAD=$LIBPTHREAD" >&5
+      echo "$as_me:32655: gl_pthread_api=$gl_pthread_api" >&5
+      echo "$as_me:32656: LIBPTHREAD=$LIBPTHREAD" >&5
 
       gl_pthread_in_glibc=no
       # On Linux with glibc >= 2.34, libc contains the fully functional
@@ -30544,7 +32679,7 @@ rm -rf conftest*
 
           ;;
       esac
-      echo "$as_me:30547: gl_pthread_in_glibc=$gl_pthread_in_glibc" >&5
+      echo "$as_me:32682: gl_pthread_in_glibc=$gl_pthread_in_glibc" >&5
 
       # Test for libpthread by looking for pthread_kill. (Not pthread_self,
       # since it is defined as a macro on OSF/1.)
@@ -30606,6 +32741,53 @@ printf "%s\n" "#define PTHREAD_IN_USE_DETECTION_HARD 1" >>confdefs.h
              esac
            fi
 
+else $as_nop
+             { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for pthread_kill in -lthr" >&5
+printf %s "checking for pthread_kill in -lthr... " >&6; }
+if test ${ac_cv_lib_thr_pthread_kill+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lthr  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+char pthread_kill ();
+int
+main (void)
+{
+return pthread_kill ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_lib_thr_pthread_kill=yes
+else $as_nop
+  ac_cv_lib_thr_pthread_kill=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_thr_pthread_kill" >&5
+printf "%s\n" "$ac_cv_lib_thr_pthread_kill" >&6; }
+if test "x$ac_cv_lib_thr_pthread_kill" = xyes
+then :
+  if test $gl_pthread_in_glibc = yes; then
+                LIBPMULTITHREAD=
+              else
+                LIBPMULTITHREAD=-lthr
+              fi
+
+fi
+
+
 fi
 
       elif test $gl_pthread_api != yes; then
@@ -30698,7 +32880,7 @@ fi
 
         fi
       fi
-      echo "$as_me:30701: LIBPMULTITHREAD=$LIBPMULTITHREAD" >&5
+      echo "$as_me:32883: LIBPMULTITHREAD=$LIBPMULTITHREAD" >&5
     fi
     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether POSIX threads API is available" >&5
 printf %s "checking whether POSIX threads API is available... " >&6; }
@@ -30965,7 +33147,7 @@ printf "%s\n" "#define USE_ISOC_THREADS 1" >>confdefs.h
       case "$gl_use_threads" in
         yes | windows | win32) # The 'win32' is for backward compatibility.
           if { case "$host_os" in
-                 mingw*) true;;
+                 mingw* | windows*) true;;
                  *) false;;
                esac
              }; then
@@ -30977,6 +33159,10 @@ printf "%s\n" "#define USE_WINDOWS_THREADS 1" >>confdefs.h
           ;;
       esac
     fi
+  else
+
+printf "%s\n" "#define AVOID_ANY_THREADS 1" >>confdefs.h
+
   fi
   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for multithread API to use" >&5
 printf %s "checking for multithread API to use... " >&6; }
@@ -31005,7 +33191,7 @@ then :
           # Guess yes on platforms where we know the result.
           *-gnu* | freebsd* | netbsd* | openbsd* | bitrig* \
           | gnu* | *-musl* | midipix* | midnightbsd* \
-          | hpux* | solaris* | cygwin* | mingw* | msys* )
+          | hpux* | solaris* | cygwin* | mingw* | windows* | msys* )
             ac_cv_func_malloc_0_nonnull="guessing yes" ;;
           # If we don't know, obey --enable-cross-guesses.
           *) ac_cv_func_malloc_0_nonnull="$gl_cross_guess_normal" ;;
@@ -31020,7 +33206,8 @@ int
 main (void)
 {
 void *p = malloc (0);
-            int result = !p;
+            void * volatile vp = p;
+            int result = !vp;
             free (p);
             return result;
   ;
@@ -31055,643 +33242,17 @@ printf "%s\n" "#define MALLOC_0_IS_NONNULL $gl_cv_func_malloc_0_nonnull" >>confd
 
 
 
+  case "$host_os" in
+    *-musl* | midipix*)
 
+printf "%s\n" "#define MUSL_LIBC 1" >>confdefs.h
 
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a traditional japanese locale" >&5
-printf %s "checking for a traditional japanese locale... " >&6; }
-if test ${gt_cv_locale_ja+y}
-then :
-  printf %s "(cached) " >&6
-else $as_nop
-
-    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-#include <locale.h>
-#include <time.h>
-#if HAVE_LANGINFO_CODESET
-# include <langinfo.h>
-#endif
-#include <stdlib.h>
-#include <string.h>
-struct tm t;
-char buf[16];
-int main ()
-{
-  /* On BeOS and Haiku, locales are not implemented in libc.  Rather, libintl
-     imitates locale dependent behaviour by looking at the environment
-     variables, and all locales use the UTF-8 encoding.  */
-#if defined __BEOS__ || defined __HAIKU__
-  return 1;
-#else
-  /* Check whether the given locale name is recognized by the system.  */
-# if defined _WIN32 && !defined __CYGWIN__
-  /* On native Windows, setlocale(category, "") looks at the system settings,
-     not at the environment variables.  Also, when an encoding suffix such
-     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
-     category of the locale to "C".  */
-  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
-      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
-    return 1;
-# else
-  if (setlocale (LC_ALL, "") == NULL) return 1;
-# endif
-  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
-     On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
-     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
-     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
-     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
-     some unit tests fail.
-     On MirBSD 10, when an unsupported locale is specified, setlocale()
-     succeeds but then nl_langinfo(CODESET) is "UTF-8".  */
-# if HAVE_LANGINFO_CODESET
-  {
-    const char *cs = nl_langinfo (CODESET);
-    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0
-        || strcmp (cs, "UTF-8") == 0)
-      return 1;
-  }
-# endif
-# ifdef __CYGWIN__
-  /* On Cygwin, avoid locale names without encoding suffix, because the
-     locale_charset() function relies on the encoding suffix.  Note that
-     LC_ALL is set on the command line.  */
-  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
-# endif
-  /* Check whether MB_CUR_MAX is > 1.  This excludes the dysfunctional locales
-     on Cygwin 1.5.x.  */
-  if (MB_CUR_MAX == 1)
-    return 1;
-  /* Check whether in a month name, no byte in the range 0x80..0x9F occurs.
-     This excludes the UTF-8 encoding (except on MirBSD).  */
-  {
-    const char *p;
-    t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
-    if (strftime (buf, sizeof (buf), "%B", &t) < 2) return 1;
-    for (p = buf; *p != '\0'; p++)
-      if ((unsigned char) *p >= 0x80 && (unsigned char) *p < 0xa0)
-        return 1;
-  }
-  return 0;
-#endif
-}
-
-_ACEOF
-    if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
-  (eval $ac_link) 2>&5
-  ac_status=$?
-  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
-  test $ac_status = 0; } && test -s conftest$ac_exeext; then
-      case "$host_os" in
-        # Handle native Windows specially, because there setlocale() interprets
-        # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
-        # "fr" or "fra" as "French" or "French_France.1252",
-        # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
-        # "ja" as "Japanese" or "Japanese_Japan.932",
-        # and similar.
-        mingw*)
-          # Note that on native Windows, the Japanese locale is
-          # Japanese_Japan.932, and CP932 is very different from EUC-JP, so we
-          # cannot use it here.
-          gt_cv_locale_ja=none
-          ;;
-        *)
-          # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
-          # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
-          # configure script would override the LC_ALL setting. Likewise for
-          # LC_CTYPE, which is also set at the beginning of the configure script.
-          # Test for the AIX locale name.
-          if (LC_ALL=ja_JP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
-            gt_cv_locale_ja=ja_JP
-          else
-            # Test for the locale name with explicit encoding suffix.
-            if (LC_ALL=ja_JP.EUC-JP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
-              gt_cv_locale_ja=ja_JP.EUC-JP
-            else
-              # Test for the HP-UX, OSF/1, NetBSD locale name.
-              if (LC_ALL=ja_JP.eucJP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
-                gt_cv_locale_ja=ja_JP.eucJP
-              else
-                # Test for the IRIX, FreeBSD locale name.
-                if (LC_ALL=ja_JP.EUC LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
-                  gt_cv_locale_ja=ja_JP.EUC
-                else
-                  # Test for the Solaris 7 locale name.
-                  if (LC_ALL=ja LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
-                    gt_cv_locale_ja=ja
-                  else
-                    # Special test for NetBSD 1.6.
-                    if test -f /usr/share/locale/ja_JP.eucJP/LC_CTYPE; then
-                      gt_cv_locale_ja=ja_JP.eucJP
-                    else
-                      # None found.
-                      gt_cv_locale_ja=none
-                    fi
-                  fi
-                fi
-              fi
-            fi
-          fi
-          ;;
-      esac
-    fi
-    rm -fr conftest*
-
-fi
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_locale_ja" >&5
-printf "%s\n" "$gt_cv_locale_ja" >&6; }
-  LOCALE_JA=$gt_cv_locale_ja
-
-
-
-
-
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a french Unicode locale" >&5
-printf %s "checking for a french Unicode locale... " >&6; }
-if test ${gt_cv_locale_fr_utf8+y}
-then :
-  printf %s "(cached) " >&6
-else $as_nop
-
-    case "$host_os" in
-      *-musl* | midipix*)
-                                        gt_cv_locale_fr_utf8=fr_FR.UTF-8
-        ;;
-      *)
-        cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-#include <locale.h>
-#include <time.h>
-#if HAVE_LANGINFO_CODESET
-# include <langinfo.h>
-#endif
-#include <stdlib.h>
-#include <string.h>
-struct tm t;
-char buf[16];
-int main () {
-  /* On BeOS and Haiku, locales are not implemented in libc.  Rather, libintl
-     imitates locale dependent behaviour by looking at the environment
-     variables, and all locales use the UTF-8 encoding.  */
-#if !(defined __BEOS__ || defined __HAIKU__)
-  /* Check whether the given locale name is recognized by the system.  */
-# if defined _WIN32 && !defined __CYGWIN__
-  /* On native Windows, setlocale(category, "") looks at the system settings,
-     not at the environment variables.  Also, when an encoding suffix such
-     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
-     category of the locale to "C".  */
-  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
-      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
-    return 1;
-# else
-  if (setlocale (LC_ALL, "") == NULL) return 1;
-# endif
-  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
-     On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
-     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
-     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
-     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
-     some unit tests fail.  */
-# if HAVE_LANGINFO_CODESET
-  {
-    const char *cs = nl_langinfo (CODESET);
-    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0)
-      return 1;
-  }
-# endif
-# ifdef __CYGWIN__
-  /* On Cygwin, avoid locale names without encoding suffix, because the
-     locale_charset() function relies on the encoding suffix.  Note that
-     LC_ALL is set on the command line.  */
-  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
-# endif
-  /* Check whether in the abbreviation of the second month, the second
-     character (should be U+00E9: LATIN SMALL LETTER E WITH ACUTE) is
-     two bytes long, with UTF-8 encoding.  */
-  t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
-  if (strftime (buf, sizeof (buf), "%b", &t) < 4
-      || buf[1] != (char) 0xc3 || buf[2] != (char) 0xa9 || buf[3] != 'v')
-    return 1;
-#endif
-#if !defined __BIONIC__ /* Bionic libc's 'struct lconv' is just a dummy.  */
-  /* Check whether the decimal separator is a comma.
-     On NetBSD 3.0 in the fr_FR.ISO8859-1 locale, localeconv()->decimal_point
-     are nl_langinfo(RADIXCHAR) are both ".".  */
-  if (localeconv () ->decimal_point[0] != ',') return 1;
-#endif
-  return 0;
-}
-
-_ACEOF
-        if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
-  (eval $ac_link) 2>&5
-  ac_status=$?
-  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
-  test $ac_status = 0; } && test -s conftest$ac_exeext; then
-          case "$host_os" in
-            # Handle native Windows specially, because there setlocale() interprets
-            # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
-            # "fr" or "fra" as "French" or "French_France.1252",
-            # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
-            # "ja" as "Japanese" or "Japanese_Japan.932",
-            # and similar.
-            mingw*)
-              # Test for the hypothetical native Windows locale name.
-              if (LC_ALL=French_France.65001 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
-                gt_cv_locale_fr_utf8=French_France.65001
-              else
-                # None found.
-                gt_cv_locale_fr_utf8=none
-              fi
-              ;;
-            *)
-              # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
-              # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
-              # configure script would override the LC_ALL setting. Likewise for
-              # LC_CTYPE, which is also set at the beginning of the configure script.
-              # Test for the usual locale name.
-              if (LC_ALL=fr_FR LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
-                gt_cv_locale_fr_utf8=fr_FR
-              else
-                # Test for the locale name with explicit encoding suffix.
-                if (LC_ALL=fr_FR.UTF-8 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
-                  gt_cv_locale_fr_utf8=fr_FR.UTF-8
-                else
-                  # Test for the Solaris 7 locale name.
-                  if (LC_ALL=fr.UTF-8 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
-                    gt_cv_locale_fr_utf8=fr.UTF-8
-                  else
-                    # None found.
-                    gt_cv_locale_fr_utf8=none
-                  fi
-                fi
-              fi
-              ;;
-          esac
-        fi
-        rm -fr conftest*
-        ;;
-    esac
-
-fi
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_locale_fr_utf8" >&5
-printf "%s\n" "$gt_cv_locale_fr_utf8" >&6; }
-  LOCALE_FR_UTF8=$gt_cv_locale_fr_utf8
-
-
-      case "$host_os" in
-    *-musl* | midipix*)
-                  LC_COLLATE_IMPLEMENTED=false
-      LC_NUMERIC_IMPLEMENTED=false
-      LC_TIME_IMPLEMENTED=false
-      LC_MONETARY_IMPLEMENTED=false
-      ;;
-    *)
-      LC_COLLATE_IMPLEMENTED=true
-      LC_NUMERIC_IMPLEMENTED=true
-      LC_TIME_IMPLEMENTED=true
-      LC_MONETARY_IMPLEMENTED=true
       ;;
   esac
 
 
 
 
-
-
-
-
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a transitional chinese locale" >&5
-printf %s "checking for a transitional chinese locale... " >&6; }
-if test ${gt_cv_locale_zh_CN+y}
-then :
-  printf %s "(cached) " >&6
-else $as_nop
-
-    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-#include <locale.h>
-#include <stdlib.h>
-#include <time.h>
-#if HAVE_LANGINFO_CODESET
-# include <langinfo.h>
-#endif
-#include <stdlib.h>
-#include <string.h>
-struct tm t;
-char buf[16];
-int main ()
-{
-  /* On BeOS and Haiku, locales are not implemented in libc.  Rather, libintl
-     imitates locale dependent behaviour by looking at the environment
-     variables, and all locales use the UTF-8 encoding.  */
-#if defined __BEOS__ || defined __HAIKU__
-  return 1;
-#else
-  /* Check whether the given locale name is recognized by the system.  */
-# if defined _WIN32 && !defined __CYGWIN__
-  /* On native Windows, setlocale(category, "") looks at the system settings,
-     not at the environment variables.  Also, when an encoding suffix such
-     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
-     category of the locale to "C".  */
-  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
-      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
-    return 1;
-# else
-  if (setlocale (LC_ALL, "") == NULL) return 1;
-# endif
-  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
-     On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
-     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
-     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
-     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
-     some unit tests fail.
-     On MirBSD 10, when an unsupported locale is specified, setlocale()
-     succeeds but then nl_langinfo(CODESET) is "UTF-8".  */
-# if HAVE_LANGINFO_CODESET
-  {
-    const char *cs = nl_langinfo (CODESET);
-    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0
-        || strcmp (cs, "UTF-8") == 0)
-      return 1;
-  }
-# endif
-# ifdef __CYGWIN__
-  /* On Cygwin, avoid locale names without encoding suffix, because the
-     locale_charset() function relies on the encoding suffix.  Note that
-     LC_ALL is set on the command line.  */
-  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
-# endif
-  /* Check whether in a month name, no byte in the range 0x80..0x9F occurs.
-     This excludes the UTF-8 encoding (except on MirBSD).  */
-  {
-    const char *p;
-    t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
-    if (strftime (buf, sizeof (buf), "%B", &t) < 2) return 1;
-    for (p = buf; *p != '\0'; p++)
-      if ((unsigned char) *p >= 0x80 && (unsigned char) *p < 0xa0)
-        return 1;
-  }
-  /* Check whether a typical GB18030 multibyte sequence is recognized as a
-     single wide character.  This excludes the GB2312 and GBK encodings.  */
-  if (mblen ("\203\062\332\066", 5) != 4)
-    return 1;
-  return 0;
-#endif
-}
-
-_ACEOF
-    if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
-  (eval $ac_link) 2>&5
-  ac_status=$?
-  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
-  test $ac_status = 0; } && test -s conftest$ac_exeext; then
-      case "$host_os" in
-        # Handle native Windows specially, because there setlocale() interprets
-        # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
-        # "fr" or "fra" as "French" or "French_France.1252",
-        # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
-        # "ja" as "Japanese" or "Japanese_Japan.932",
-        # and similar.
-        mingw*)
-          # Test for the hypothetical native Windows locale name.
-          if (LC_ALL=Chinese_China.54936 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
-            gt_cv_locale_zh_CN=Chinese_China.54936
-          else
-            # None found.
-            gt_cv_locale_zh_CN=none
-          fi
-          ;;
-        solaris2.8)
-          # On Solaris 8, the locales zh_CN.GB18030, zh_CN.GBK, zh.GBK are
-          # broken. One witness is the test case in gl_MBRTOWC_SANITYCHECK.
-          # Another witness is that "LC_ALL=zh_CN.GB18030 bash -c true" dumps core.
-          gt_cv_locale_zh_CN=none
-          ;;
-        *)
-          # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
-          # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
-          # configure script would override the LC_ALL setting. Likewise for
-          # LC_CTYPE, which is also set at the beginning of the configure script.
-          # Test for the locale name without encoding suffix.
-          if (LC_ALL=zh_CN LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
-            gt_cv_locale_zh_CN=zh_CN
-          else
-            # Test for the locale name with explicit encoding suffix.
-            if (LC_ALL=zh_CN.GB18030 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
-              gt_cv_locale_zh_CN=zh_CN.GB18030
-            else
-              # None found.
-              gt_cv_locale_zh_CN=none
-            fi
-          fi
-          ;;
-      esac
-    else
-      # If there was a link error, due to mblen(), the system is so old that
-      # it certainly doesn't have a chinese locale.
-      gt_cv_locale_zh_CN=none
-    fi
-    rm -fr conftest*
-
-fi
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_locale_zh_CN" >&5
-printf "%s\n" "$gt_cv_locale_zh_CN" >&6; }
-  LOCALE_ZH_CN=$gt_cv_locale_zh_CN
-
-
-
-
-
-
-
-
-
-        if case "$host_os" in
-       mingw*) true ;;
-       *) test $ac_cv_func_mbsinit = yes ;;
-     esac \
-    && test $ac_cv_func_mbrtowc = yes; then
-
-
-
-
-     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether mbrtowc handles incomplete characters" >&5
-printf %s "checking whether mbrtowc handles incomplete characters... " >&6; }
-if test ${gl_cv_func_mbrtowc_incomplete_state+y}
-then :
-  printf %s "(cached) " >&6
-else $as_nop
-
-                  case "$host_os" in
-                     # Guess no on AIX and OSF/1.
-        aix* | osf*) gl_cv_func_mbrtowc_incomplete_state="guessing no" ;;
-                     # Guess yes otherwise.
-        *)           gl_cv_func_mbrtowc_incomplete_state="guessing yes" ;;
-      esac
-      if test $LOCALE_JA != none; then
-        if test "$cross_compiling" = yes
-then :
-  :
-else $as_nop
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-#include <locale.h>
-#include <string.h>
-#include <wchar.h>
-int main ()
-{
-  if (setlocale (LC_ALL, "$LOCALE_JA") != NULL)
-    {
-      const char input[] = "B\217\253\344\217\251\316er"; /* "Büßer" */
-      mbstate_t state;
-      wchar_t wc;
-
-      memset (&state, '\0', sizeof (mbstate_t));
-      if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2))
-        if (mbsinit (&state))
-          return 2;
-    }
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_run "$LINENO"
-then :
-  gl_cv_func_mbrtowc_incomplete_state=yes
-else $as_nop
-  gl_cv_func_mbrtowc_incomplete_state=no
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
-      else
-        if test $LOCALE_FR_UTF8 != none; then
-          if test "$cross_compiling" = yes
-then :
-  :
-else $as_nop
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-#include <locale.h>
-#include <string.h>
-#include <wchar.h>
-int main ()
-{
-  if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
-    {
-      const char input[] = "B\303\274\303\237er"; /* "Büßer" */
-      mbstate_t state;
-      wchar_t wc;
-
-      memset (&state, '\0', sizeof (mbstate_t));
-      if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2))
-        if (mbsinit (&state))
-          return 2;
-    }
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_run "$LINENO"
-then :
-  gl_cv_func_mbrtowc_incomplete_state=yes
-else $as_nop
-  gl_cv_func_mbrtowc_incomplete_state=no
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
-        fi
-      fi
-
-fi
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_mbrtowc_incomplete_state" >&5
-printf "%s\n" "$gl_cv_func_mbrtowc_incomplete_state" >&6; }
-
-
-
-
-     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether mbrtowc works as well as mbtowc" >&5
-printf %s "checking whether mbrtowc works as well as mbtowc... " >&6; }
-if test ${gl_cv_func_mbrtowc_sanitycheck+y}
-then :
-  printf %s "(cached) " >&6
-else $as_nop
-
-                  case "$host_os" in
-                    # Guess no on Solaris 8.
-        solaris2.8) gl_cv_func_mbrtowc_sanitycheck="guessing no" ;;
-                    # Guess yes otherwise.
-        *)          gl_cv_func_mbrtowc_sanitycheck="guessing yes" ;;
-      esac
-      if test $LOCALE_ZH_CN != none; then
-        if test "$cross_compiling" = yes
-then :
-  :
-else $as_nop
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-#include <locale.h>
-#include <stdlib.h>
-#include <string.h>
-#include <wchar.h>
-int main ()
-{
-  /* This fails on Solaris 8:
-     mbrtowc returns 2, and sets wc to 0x00F0.
-     mbtowc returns 4 (correct) and sets wc to 0x5EDC.  */
-  if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL)
-    {
-      char input[] = "B\250\271\201\060\211\070er"; /* "Büßer" */
-      mbstate_t state;
-      wchar_t wc;
-
-      memset (&state, '\0', sizeof (mbstate_t));
-      if (mbrtowc (&wc, input + 3, 6, &state) != 4
-          && mbtowc (&wc, input + 3, 6) == 4)
-        return 2;
-    }
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_run "$LINENO"
-then :
-  gl_cv_func_mbrtowc_sanitycheck=yes
-else $as_nop
-  gl_cv_func_mbrtowc_sanitycheck=no
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
-      fi
-
-fi
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_mbrtowc_sanitycheck" >&5
-printf "%s\n" "$gl_cv_func_mbrtowc_sanitycheck" >&6; }
-
-    REPLACE_MBSTATE_T=0
-    case "$gl_cv_func_mbrtowc_incomplete_state" in
-      *yes) ;;
-      *) REPLACE_MBSTATE_T=1 ;;
-    esac
-    case "$gl_cv_func_mbrtowc_sanitycheck" in
-      *yes) ;;
-      *) REPLACE_MBSTATE_T=1 ;;
-    esac
-  else
-    REPLACE_MBSTATE_T=1
-  fi
-
-
-
-
   # Check for mmap(). Don't use AC_FUNC_MMAP, because it checks too much: it
   # fails on HP-UX 11, because MAP_FIXED mappings do not work. But this is
   # irrelevant for anonymous mappings.
@@ -31801,6 +33362,7 @@ printf "%s\n" "#define HAVE_MAP_ANONYMOUS 1" >>confdefs.h
   REPLACE_STRERROR_R=0;
   REPLACE_STRERRORNAME_NP=0;
   REPLACE_STRSIGNAL=0;
+  REPLACE_STRVERSCMP=0;
   UNDEFINE_STRTOK_R=0;
 
 
@@ -31828,12 +33390,12 @@ else $as_nop
   if test "$cross_compiling" = yes
 then :
   case "$host_os" in
-                           # Guess no on Android.
-          linux*-android*) gl_cv_func_memchr_works="guessing no" ;;
-                           # Guess yes on native Windows.
-          mingw*)          gl_cv_func_memchr_works="guessing yes" ;;
-                           # If we don't know, obey --enable-cross-guesses.
-          *)               gl_cv_func_memchr_works="$gl_cross_guess_normal" ;;
+                             # Guess no on Android.
+          linux*-android*)   gl_cv_func_memchr_works="guessing no" ;;
+                             # Guess yes on native Windows.
+          mingw* | windows*) gl_cv_func_memchr_works="guessing yes" ;;
+                             # If we don't know, obey --enable-cross-guesses.
+          *)                 gl_cv_func_memchr_works="$gl_cross_guess_normal" ;;
         esac
 
 else $as_nop
@@ -32323,19 +33885,17 @@ printf "%s\n" "#define HAVE_MINMAX_IN_SYS_PARAM_H 1" >>confdefs.h
   HAVE_TIMESPEC_GET=1;
   HAVE_TIMESPEC_GETRES=1;
     HAVE_TIMEZONE_T=0;
-        REPLACE_CTIME=GNULIB_PORTCHECK;
-  REPLACE_LOCALTIME_R=GNULIB_PORTCHECK;
-  REPLACE_MKTIME=GNULIB_PORTCHECK;
-  REPLACE_NANOSLEEP=GNULIB_PORTCHECK;
-  REPLACE_STRFTIME=GNULIB_PORTCHECK;
-  REPLACE_TIME=0;
-  REPLACE_TIMEGM=GNULIB_PORTCHECK;
-  REPLACE_TIMESPEC_GET=GNULIB_PORTCHECK;
-  REPLACE_TZSET=GNULIB_PORTCHECK;
-
-      : ${GNULIB_GETTIMEOFDAY=0};
-        REPLACE_GMTIME=0;
+  REPLACE_CTIME=0;
+  REPLACE_GMTIME=0;
   REPLACE_LOCALTIME=0;
+  REPLACE_LOCALTIME_R=0;
+  REPLACE_MKTIME=0;
+  REPLACE_NANOSLEEP=0;
+  REPLACE_STRFTIME=0;
+  REPLACE_TIME=0;
+  REPLACE_TIMEGM=0;
+  REPLACE_TIMESPEC_GET=0;
+  REPLACE_TZSET=0;
 
 ac_fn_check_decl "$LINENO" "alarm" "ac_cv_have_decl_alarm" "$ac_includes_default" "$ac_c_undeclared_builtin_options" "CFLAGS"
 if test "x$ac_cv_have_decl_alarm" = xyes
@@ -32407,12 +33967,12 @@ printf "%s\n" "#define HAVE_DECL_ALARM $ac_have_decl" >>confdefs.h
 
 
   case "$host_os" in
-    mingw*) gl_cv_have_nonblocking=no ;;
-    *)      gl_cv_have_nonblocking=yes ;;
+    mingw* | windows*) gl_cv_have_nonblocking=no ;;
+    *)                 gl_cv_have_nonblocking=yes ;;
   esac
   case "$host_os" in
-    mingw*) gl_cv_have_open_O_NONBLOCK=no ;;
-    *)      gl_cv_have_open_O_NONBLOCK=yes ;;
+    mingw* | windows*) gl_cv_have_open_O_NONBLOCK=no ;;
+    *)                 gl_cv_have_open_O_NONBLOCK=yes ;;
   esac
 
 
@@ -32693,7 +34253,7 @@ _ACEOF
   esac
 
   case "$host_os" in
-    mingw*)
+    mingw* | windows*)
                                           gl_dirsep_regex='[/\\]'
       ;;
     *)
@@ -33215,7 +34775,7 @@ _ACEOF
   esac
 
   case "$host_os" in
-    mingw*)
+    mingw* | windows*)
                                           gl_dirsep_regex='[/\\]'
       ;;
     *)
@@ -33300,16 +34860,6 @@ fi
 
 
 
-
-
-  case "$host_os" in
-    *-musl* | midipix*)
-
-printf "%s\n" "#define MUSL_LIBC 1" >>confdefs.h
-
-      ;;
-  esac
-
 ac_fn_check_decl "$LINENO" "fcloseall" "ac_cv_have_decl_fcloseall" "$ac_includes_default" "$ac_c_undeclared_builtin_options" "CFLAGS"
 if test "x$ac_cv_have_decl_fcloseall" = xyes
 then :
@@ -33369,7 +34919,7 @@ _ACEOF
   esac
 
   case "$host_os" in
-    mingw*)
+    mingw* | windows*)
                                           gl_dirsep_regex='[/\\]'
       ;;
     *)
@@ -33564,7 +35114,7 @@ _ACEOF
   esac
 
   case "$host_os" in
-    mingw*)
+    mingw* | windows*)
                                           gl_dirsep_regex='[/\\]'
       ;;
     *)
@@ -33816,7 +35366,7 @@ then :
                              # Guess yes on musl systems.
          *-musl* | midipix*) gl_cv_func_strerror_0_works="guessing yes" ;;
                              # Guess yes on native Windows.
-         mingw*)             gl_cv_func_strerror_0_works="guessing yes" ;;
+         mingw* | windows*)  gl_cv_func_strerror_0_works="guessing yes" ;;
                              # If we don't know, obey --enable-cross-guesses.
          *)                  gl_cv_func_strerror_0_works="$gl_cross_guess_normal" ;;
        esac
@@ -33899,7 +35449,7 @@ _ACEOF
   esac
 
   case "$host_os" in
-    mingw*)
+    mingw* | windows*)
                                           gl_dirsep_regex='[/\\]'
       ;;
     *)
@@ -33985,7 +35535,7 @@ _ACEOF
   esac
 
   case "$host_os" in
-    mingw*)
+    mingw* | windows*)
                                           gl_dirsep_regex='[/\\]'
       ;;
     *)
@@ -34104,7 +35654,7 @@ _ACEOF
   esac
 
   case "$host_os" in
-    mingw*)
+    mingw* | windows*)
                                           gl_dirsep_regex='[/\\]'
       ;;
     *)
@@ -34234,7 +35784,7 @@ _ACEOF
   esac
 
   case "$host_os" in
-    mingw*)
+    mingw* | windows*)
                                           gl_dirsep_regex='[/\\]'
       ;;
     *)
@@ -34321,7 +35871,7 @@ _ACEOF
   esac
 
   case "$host_os" in
-    mingw*)
+    mingw* | windows*)
                                           gl_dirsep_regex='[/\\]'
       ;;
     *)
@@ -34489,7 +36039,7 @@ _ACEOF
   esac
 
   case "$host_os" in
-    mingw*)
+    mingw* | windows*)
                                           gl_dirsep_regex='[/\\]'
       ;;
     *)
@@ -34584,7 +36134,7 @@ _ACEOF
   esac
 
   case "$host_os" in
-    mingw*)
+    mingw* | windows*)
                                           gl_dirsep_regex='[/\\]'
       ;;
     *)
@@ -34681,7 +36231,7 @@ _ACEOF
   esac
 
   case "$host_os" in
-    mingw*)
+    mingw* | windows*)
                                           gl_dirsep_regex='[/\\]'
       ;;
     *)
@@ -34914,7 +36464,7 @@ _ACEOF
   esac
 
   case "$host_os" in
-    mingw*)
+    mingw* | windows*)
                                           gl_dirsep_regex='[/\\]'
       ;;
     *)
@@ -34999,6 +36549,623 @@ printf "%s\n" "$gl_cv_time_h_has_TIME_UTC" >&6; }
   fi
 
 
+
+
+
+
+
+
+gl_libunistring_sed_extract_major='/^[0-9]/{s/^\([0-9]*\).*/\1/p;q;}
+i\
+0
+q
+'
+gl_libunistring_sed_extract_minor='/^[0-9][0-9]*[.][0-9]/{s/^[0-9]*[.]\([0-9]*\).*/\1/p;q;}
+i\
+0
+q
+'
+gl_libunistring_sed_extract_subminor='/^[0-9][0-9]*[.][0-9][0-9]*[.][0-9]/{s/^[0-9]*[.][0-9]*[.]\([0-9]*\).*/\1/p;q;}
+i\
+0
+q
+'
+
+
+  if test "$HAVE_LIBUNISTRING" = yes; then
+    LIBUNISTRING_VERSION_MAJOR=`echo "$LIBUNISTRING_VERSION" | sed -n -e "$gl_libunistring_sed_extract_major"`
+    LIBUNISTRING_VERSION_MINOR=`echo "$LIBUNISTRING_VERSION" | sed -n -e "$gl_libunistring_sed_extract_minor"`
+    LIBUNISTRING_VERSION_SUBMINOR=`echo "$LIBUNISTRING_VERSION" | sed -n -e "$gl_libunistring_sed_extract_subminor"`
+  fi
+
+                if test "$HAVE_LIBUNISTRING" = yes; then
+              for ac_header in unistring/woe32dll.h
+do :
+  ac_fn_c_check_header_compile "$LINENO" "unistring/woe32dll.h" "ac_cv_header_unistring_woe32dll_h" "$ac_includes_default"
+if test "x$ac_cv_header_unistring_woe32dll_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_UNISTRING_WOE32DLL_H 1" >>confdefs.h
+ HAVE_UNISTRING_WOE32DLL_H=1
+else $as_nop
+  HAVE_UNISTRING_WOE32DLL_H=0
+fi
+
+done
+     else
+       HAVE_UNISTRING_WOE32DLL_H=0
+     fi
+
+
+
+
+
+
+
+
+
+
+  GL_GNULIB_UNICASE_EMPTY_PREFIX_CONTEXT_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICASE_EMPTY_SUFFIX_CONTEXT_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+
+
+
+
+
+
+
+  GL_GNULIB_UNICTYPE_CATEGORY_L_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_CATEGORY_LC_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_CATEGORY_LU_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_CATEGORY_LL_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_CATEGORY_LT_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_CATEGORY_LM_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_CATEGORY_LO_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_CATEGORY_M_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_CATEGORY_MN_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_CATEGORY_MC_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_CATEGORY_ME_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_CATEGORY_N_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_CATEGORY_ND_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_CATEGORY_NL_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_CATEGORY_NO_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_CATEGORY_P_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_CATEGORY_PC_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_CATEGORY_PD_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_CATEGORY_PS_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_CATEGORY_PE_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_CATEGORY_PI_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_CATEGORY_PF_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_CATEGORY_PO_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_CATEGORY_S_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_CATEGORY_SM_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_CATEGORY_SC_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_CATEGORY_SK_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_CATEGORY_SO_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_CATEGORY_Z_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_CATEGORY_ZS_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_CATEGORY_ZL_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_CATEGORY_ZP_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_CATEGORY_C_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_CATEGORY_CC_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_CATEGORY_CF_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_CATEGORY_CS_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_CATEGORY_CO_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_CATEGORY_CN_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_WHITE_SPACE_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_ALPHABETIC_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_OTHER_ALPHABETIC_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_NOT_A_CHARACTER_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_DEFAULT_IGNORABLE_CODE_POINT_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_OTHER_DEFAULT_IGNORABLE_CODE_POINT_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_DEPRECATED_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_LOGICAL_ORDER_EXCEPTION_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_VARIATION_SELECTOR_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_PRIVATE_USE_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_UNASSIGNED_CODE_VALUE_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_UPPERCASE_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_OTHER_UPPERCASE_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_LOWERCASE_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_OTHER_LOWERCASE_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_TITLECASE_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_CASED_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_CASE_IGNORABLE_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_CHANGES_WHEN_LOWERCASED_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_CHANGES_WHEN_UPPERCASED_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_CHANGES_WHEN_TITLECASED_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_CHANGES_WHEN_CASEFOLDED_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_CHANGES_WHEN_CASEMAPPED_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_SOFT_DOTTED_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_ID_START_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_OTHER_ID_START_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_ID_CONTINUE_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_OTHER_ID_CONTINUE_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_XID_START_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_XID_CONTINUE_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_PATTERN_WHITE_SPACE_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_PATTERN_SYNTAX_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_JOIN_CONTROL_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_GRAPHEME_BASE_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_GRAPHEME_EXTEND_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_OTHER_GRAPHEME_EXTEND_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_GRAPHEME_LINK_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_BIDI_CONTROL_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_BIDI_LEFT_TO_RIGHT_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_BIDI_HEBREW_RIGHT_TO_LEFT_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_BIDI_ARABIC_RIGHT_TO_LEFT_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_BIDI_EUROPEAN_DIGIT_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_BIDI_EUR_NUM_SEPARATOR_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_BIDI_EUR_NUM_TERMINATOR_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_BIDI_ARABIC_DIGIT_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_BIDI_COMMON_SEPARATOR_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_BIDI_BLOCK_SEPARATOR_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_BIDI_SEGMENT_SEPARATOR_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_BIDI_WHITESPACE_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_BIDI_NON_SPACING_MARK_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_BIDI_BOUNDARY_NEUTRAL_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_BIDI_PDF_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_BIDI_EMBEDDING_OR_OVERRIDE_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_BIDI_OTHER_NEUTRAL_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_HEX_DIGIT_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_ASCII_HEX_DIGIT_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_IDEOGRAPHIC_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_UNIFIED_IDEOGRAPH_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_RADICAL_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_IDS_BINARY_OPERATOR_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_IDS_TRINARY_OPERATOR_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_EMOJI_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_EMOJI_PRESENTATION_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_EMOJI_MODIFIER_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_EMOJI_MODIFIER_BASE_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_EMOJI_COMPONENT_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_EXTENDED_PICTOGRAPHIC_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_ZERO_WIDTH_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_SPACE_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_NON_BREAK_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_ISO_CONTROL_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_FORMAT_CONTROL_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_DASH_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_HYPHEN_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_PUNCTUATION_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_LINE_SEPARATOR_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_PARAGRAPH_SEPARATOR_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_QUOTATION_MARK_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_SENTENCE_TERMINAL_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_TERMINAL_PUNCTUATION_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_CURRENCY_SYMBOL_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_MATH_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_OTHER_MATH_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_PAIRED_PUNCTUATION_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_LEFT_OF_PAIR_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_COMBINING_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_COMPOSITE_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_DECIMAL_DIGIT_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_NUMERIC_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_DIACRITIC_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_EXTENDER_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_IGNORABLE_CONTROL_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNICTYPE_PROPERTY_REGIONAL_INDICATOR_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+
+
+
+
+
+
+
+  GL_GNULIB_UNINORM_NFD_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNINORM_NFC_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNINORM_NFKD_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
+  GL_GNULIB_UNINORM_NFKC_DLL_VARIABLE='LIBUNISTRING_DLL_VARIABLE'
+
+
+
 ac_fn_check_decl "$LINENO" "execvpe" "ac_cv_have_decl_execvpe" "$ac_includes_default" "$ac_c_undeclared_builtin_options" "CFLAGS"
 if test "x$ac_cv_have_decl_execvpe" = xyes
 then :
@@ -35045,7 +37212,7 @@ _ACEOF
   esac
 
   case "$host_os" in
-    mingw*)
+    mingw* | windows*)
                                           gl_dirsep_regex='[/\\]'
       ;;
     *)
@@ -35167,7 +37334,7 @@ _ACEOF
   esac
 
   case "$host_os" in
-    mingw*)
+    mingw* | windows*)
                                           gl_dirsep_regex='[/\\]'
       ;;
     *)
@@ -35234,11 +37401,11 @@ else $as_nop
   if test "$cross_compiling" = yes
 then :
   case "$host_os" in
-                   # Guess yes on musl systems.
-          *-musl*) gl_cv_func_working_utimes="guessing yes" ;;
-                   # Guess no on native Windows.
-          mingw*)  gl_cv_func_working_utimes="guessing no" ;;
-          *)       gl_cv_func_working_utimes="$gl_cross_guess_normal" ;;
+                             # Guess yes on musl systems.
+          *-musl*)           gl_cv_func_working_utimes="guessing yes" ;;
+                             # Guess no on native Windows.
+          mingw* | windows*) gl_cv_func_working_utimes="guessing no" ;;
+          *)                 gl_cv_func_working_utimes="$gl_cross_guess_normal" ;;
         esac
 
 else $as_nop
@@ -35567,7 +37734,8 @@ then :
                                  # Guess yes on Android.
            linux*-android*)      gl_cv_func_snprintf_retval_c99="guessing yes";;
                                  # Guess yes on MSVC, no on mingw.
-           mingw*)               cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+           windows*-msvc*)       gl_cv_func_snprintf_retval_c99="guessing yes" ;;
+           mingw* | windows*)    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
 #ifdef _MSC_VER
@@ -35690,7 +37858,7 @@ then :
                                  # Guess yes on Android.
            linux*-android*)      gl_cv_func_snprintf_truncation_c99="guessing yes";;
                                  # Guess no on native Windows.
-           mingw*)               gl_cv_func_snprintf_truncation_c99="guessing no";;
+           mingw* | windows*)    gl_cv_func_snprintf_truncation_c99="guessing no";;
                                  # If we don't know, obey --enable-cross-guesses.
            *)                    gl_cv_func_snprintf_truncation_c99="$gl_cross_guess_normal";;
          esac
@@ -36170,13 +38338,17 @@ then :
 
          case "$host_os" in
            netbsd[1-3]* | netbsdelf[1-3]* | netbsdaout[1-3]* | netbsdcoff[1-3]*)
-                            gl_cv_func_printf_positions="guessing no";;
-           beos*)           gl_cv_func_printf_positions="guessing no";;
-                            # Guess yes on Android.
-           linux*-android*) gl_cv_func_printf_positions="guessing yes";;
-                            # Guess no on native Windows.
-           mingw* | pw*)    gl_cv_func_printf_positions="guessing no";;
-           *)               gl_cv_func_printf_positions="guessing yes";;
+             gl_cv_func_printf_positions="guessing no";;
+           beos*)
+             gl_cv_func_printf_positions="guessing no";;
+             # Guess yes on Android.
+           linux*-android*)
+             gl_cv_func_printf_positions="guessing yes";;
+             # Guess no on native Windows.
+           mingw* | windows* | pw*)
+             gl_cv_func_printf_positions="guessing no";;
+           *)
+             gl_cv_func_printf_positions="guessing yes";;
          esac
 
 else $as_nop
@@ -36222,16 +38394,6 @@ printf "%s\n" "#define HAVE_DECL_VSNPRINTF $ac_have_decl" >>confdefs.h
 
 
 
-  if test $ac_cv_header_crtdefs_h = yes; then
-    HAVE_CRTDEFS_H=1
-  else
-    HAVE_CRTDEFS_H=0
-  fi
-
-
-
-
-
 
 
 
@@ -36266,7 +38428,7 @@ _ACEOF
   esac
 
   case "$host_os" in
-    mingw*)
+    mingw* | windows*)
                                           gl_dirsep_regex='[/\\]'
       ;;
     *)
@@ -36354,340 +38516,6 @@ printf "%s\n" "#define HAVE_DECL_WCSDUP $ac_have_decl" >>confdefs.h
 
 
 
-    HAVE_ISWBLANK=1;
-  HAVE_WCTYPE_T=1;
-  HAVE_WCTRANS_T=1;
-  REPLACE_ISWBLANK=0;
-  REPLACE_ISWDIGIT=0;
-  REPLACE_ISWXDIGIT=0;
-
-
-
-
-
-
-
-
-  if test $ac_cv_func_iswcntrl = yes; then
-    HAVE_ISWCNTRL=1
-  else
-    HAVE_ISWCNTRL=0
-  fi
-
-
-
-  if test $gt_cv_c_wint_t = yes; then
-    HAVE_WINT_T=1
-  else
-    HAVE_WINT_T=0
-  fi
-
-
-
-
-
-
-
-
-
-
-
-
-
-     if test $gl_cv_have_include_next = yes; then
-       gl_cv_next_wctype_h='<'wctype.h'>'
-     else
-       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking absolute name of <wctype.h>" >&5
-printf %s "checking absolute name of <wctype.h>... " >&6; }
-if test ${gl_cv_next_wctype_h+y}
-then :
-  printf %s "(cached) " >&6
-else $as_nop
-
-             if test $ac_cv_header_wctype_h = yes; then
-
-
-
-
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <wctype.h>
-_ACEOF
-                case "$host_os" in
-    aix*) gl_absname_cpp="$ac_cpp -C" ;;
-    *)    gl_absname_cpp="$ac_cpp" ;;
-  esac
-
-  case "$host_os" in
-    mingw*)
-                                          gl_dirsep_regex='[/\\]'
-      ;;
-    *)
-      gl_dirsep_regex='\/'
-      ;;
-  esac
-      gl_make_literal_regex_sed='s,[]$^\\.*/[],\\&,g'
-  gl_header_literal_regex=`echo 'wctype.h' \
-                           | sed -e "$gl_make_literal_regex_sed"`
-  gl_absolute_header_sed="/${gl_dirsep_regex}${gl_header_literal_regex}/"'{
-      s/.*"\(.*'"${gl_dirsep_regex}${gl_header_literal_regex}"'\)".*/\1/
-      s|^/[^/]|//&|
-      p
-      q
-    }'
-
-        gl_cv_absolute_wctype_h=`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&5 |
-  sed -n "$gl_absolute_header_sed"`
-
-          gl_header=$gl_cv_absolute_wctype_h
-          gl_cv_next_wctype_h='"'$gl_header'"'
-          else
-               gl_cv_next_wctype_h='<'wctype.h'>'
-             fi
-
-
-fi
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_next_wctype_h" >&5
-printf "%s\n" "$gl_cv_next_wctype_h" >&6; }
-     fi
-     NEXT_WCTYPE_H=$gl_cv_next_wctype_h
-
-     if test $gl_cv_have_include_next = yes || test $gl_cv_have_include_next = buggy; then
-       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include_next'
-       gl_next_as_first_directive='<'wctype.h'>'
-     else
-       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include'
-       gl_next_as_first_directive=$gl_cv_next_wctype_h
-     fi
-     NEXT_AS_FIRST_DIRECTIVE_WCTYPE_H=$gl_next_as_first_directive
-
-
-
-
-  if test $ac_cv_header_wctype_h = yes; then
-    if test $ac_cv_func_iswcntrl = yes; then
-                  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether iswcntrl works" >&5
-printf %s "checking whether iswcntrl works... " >&6; }
-if test ${gl_cv_func_iswcntrl_works+y}
-then :
-  printf %s "(cached) " >&6
-else $as_nop
-
-          if test "$cross_compiling" = yes
-then :
-               cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <stdlib.h>
-                          #if __GNU_LIBRARY__ == 1
-                          Linux libc5 i18n is broken.
-                          #endif
-int
-main (void)
-{
-
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"
-then :
-  gl_cv_func_iswcntrl_works="guessing yes"
-else $as_nop
-  gl_cv_func_iswcntrl_works="guessing no"
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
-
-else $as_nop
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-               #include <wchar.h>
-               #include <wctype.h>
-               int main () { return iswprint ('x') == 0; }
-
-_ACEOF
-if ac_fn_c_try_run "$LINENO"
-then :
-  gl_cv_func_iswcntrl_works=yes
-else $as_nop
-  gl_cv_func_iswcntrl_works=no
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
-
-fi
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_iswcntrl_works" >&5
-printf "%s\n" "$gl_cv_func_iswcntrl_works" >&6; }
-    fi
-    HAVE_WCTYPE_H=1
-  else
-    HAVE_WCTYPE_H=0
-  fi
-
-
-  if test $GNULIBHEADERS_OVERRIDE_WINT_T = 1; then
-    REPLACE_ISWCNTRL=1
-  else
-    case "$gl_cv_func_iswcntrl_works" in
-      *yes) REPLACE_ISWCNTRL=0 ;;
-      *)    REPLACE_ISWCNTRL=1 ;;
-    esac
-  fi
-
-
-  if test $HAVE_ISWCNTRL = 0 || test $REPLACE_ISWCNTRL = 1; then
-        :
-  fi
-
-  if test $REPLACE_ISWCNTRL = 1; then
-    REPLACE_TOWLOWER=1
-  else
-    ac_fn_c_check_func "$LINENO" "towlower" "ac_cv_func_towlower"
-if test "x$ac_cv_func_towlower" = xyes
-then :
-  printf "%s\n" "#define HAVE_TOWLOWER 1" >>confdefs.h
-
-fi
-
-    if test $ac_cv_func_towlower = yes; then
-      REPLACE_TOWLOWER=0
-    else
-      ac_fn_check_decl "$LINENO" "towlower" "ac_cv_have_decl_towlower" "#include <wchar.h>
-          #if HAVE_WCTYPE_H
-          # include <wctype.h>
-          #endif
-
-" "$ac_c_undeclared_builtin_options" "CFLAGS"
-if test "x$ac_cv_have_decl_towlower" = xyes
-then :
-  ac_have_decl=1
-else $as_nop
-  ac_have_decl=0
-fi
-printf "%s\n" "#define HAVE_DECL_TOWLOWER $ac_have_decl" >>confdefs.h
-
-      if test $ac_cv_have_decl_towlower = yes; then
-                                REPLACE_TOWLOWER=1
-      else
-        REPLACE_TOWLOWER=0
-      fi
-    fi
-  fi
-
-
-  if test $HAVE_ISWCNTRL = 0 || test $REPLACE_TOWLOWER = 1; then
-        :
-  fi
-
-          { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for wctype_t" >&5
-printf %s "checking for wctype_t... " >&6; }
-if test ${gl_cv_type_wctype_t+y}
-then :
-  printf %s "(cached) " >&6
-else $as_nop
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <wchar.h>
-            #if HAVE_WCTYPE_H
-            # include <wctype.h>
-            #endif
-            wctype_t a;
-
-int
-main (void)
-{
-
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"
-then :
-  gl_cv_type_wctype_t=yes
-else $as_nop
-  gl_cv_type_wctype_t=no
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
-
-fi
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_type_wctype_t" >&5
-printf "%s\n" "$gl_cv_type_wctype_t" >&6; }
-  if test $gl_cv_type_wctype_t = no; then
-    HAVE_WCTYPE_T=0
-  fi
-
-      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for wctrans_t" >&5
-printf %s "checking for wctrans_t... " >&6; }
-if test ${gl_cv_type_wctrans_t+y}
-then :
-  printf %s "(cached) " >&6
-else $as_nop
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <wchar.h>
-            #include <wctype.h>
-            wctrans_t a;
-
-int
-main (void)
-{
-
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"
-then :
-  gl_cv_type_wctrans_t=yes
-else $as_nop
-  gl_cv_type_wctrans_t=no
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
-
-fi
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_type_wctrans_t" >&5
-printf "%s\n" "$gl_cv_type_wctrans_t" >&6; }
-  if test $gl_cv_type_wctrans_t = no; then
-    HAVE_WCTRANS_T=0
-  fi
-
-
-
-
-
-
-
-  GL_GNULIB_ISWBLANK=0
-
-
-
-  GL_GNULIB_ISWDIGIT=0
-
-
-
-  GL_GNULIB_ISWXDIGIT=0
-
-
-
-  GL_GNULIB_WCTYPE=0
-
-
-
-  GL_GNULIB_ISWCTYPE=0
-
-
-
-  GL_GNULIB_WCTRANS=0
-
-
-
-  GL_GNULIB_TOWCTRANS=0
-
-
-
-
 
   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for C compiler option to allow warnings" >&5
 printf %s "checking for C compiler option to allow warnings... " >&6; }
@@ -36729,7 +38557,7 @@ printf "%s\n" "$gl_cv_cc_wallow" >&6; }
 
       GL_CFLAG_GNULIB_WARNINGS=''
   if test -n "$GL_CFLAG_ALLOW_WARNINGS"; then
-                                                                        cat > conftest.c <<\EOF
+                                                                            cat > conftest.c <<\EOF
       #if __GNUC__ >= 3 || (__clang_major__ + (__clang_minor__ >= 9) > 3)
       -Wno-cast-qual
       -Wno-conversion
@@ -36748,6 +38576,9 @@ printf "%s\n" "$gl_cv_cc_wallow" >&6; }
       #if __GNUC__ + (__GNUC_MINOR__ >= 8) > 4 || (__clang_major__ + (__clang_minor__ >= 9) > 3)
       -Wno-pedantic
       #endif
+      #if 3 < __clang_major__ + (9 <= __clang_minor__)
+      -Wno-tautological-constant-out-of-range-compare
+      #endif
       #if __GNUC__ + (__GNUC_MINOR__ >= 3) > 4 || (__clang_major__ + (__clang_minor__ >= 9) > 3)
       -Wno-sign-conversion
       -Wno-type-limits
@@ -37190,7 +39021,7 @@ _ACEOF
   esac
 
   case "$host_os" in
-    mingw*)
+    mingw* | windows*)
                                           gl_dirsep_regex='[/\\]'
       ;;
     *)
@@ -37278,6 +39109,25 @@ fi
 
 
 
+
+
+
+          GL_GNULIB_BTOC32=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_BTOC32 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
   if test $ac_cv_func_btowc = no; then
     HAVE_BTOWC=0
   else
@@ -37296,12 +39146,12 @@ else $as_nop
 then :
 
            case "$host_os" in
-                      # Guess no on Cygwin.
-             cygwin*) gl_cv_func_btowc_nul="guessing no" ;;
-                      # Guess yes on native Windows.
-             mingw*)  gl_cv_func_btowc_nul="guessing yes" ;;
-                      # Guess yes otherwise.
-             *)       gl_cv_func_btowc_nul="guessing yes" ;;
+                                # Guess no on Cygwin.
+             cygwin*)           gl_cv_func_btowc_nul="guessing no" ;;
+                                # Guess yes on native Windows.
+             mingw* | windows*) gl_cv_func_btowc_nul="guessing yes" ;;
+                                # Guess yes otherwise.
+             *)                 gl_cv_func_btowc_nul="guessing yes" ;;
            esac
 
 else $as_nop
@@ -37339,12 +39189,12 @@ then :
 else $as_nop
 
                         case "$host_os" in
-                  # Guess no on IRIX.
-          irix*)  gl_cv_func_btowc_eof="guessing no" ;;
-                  # Guess yes on native Windows.
-          mingw*) gl_cv_func_btowc_eof="guessing yes" ;;
-                  # Guess yes otherwise.
-          *)      gl_cv_func_btowc_eof="guessing yes" ;;
+                             # Guess no on IRIX.
+          irix*)             gl_cv_func_btowc_eof="guessing no" ;;
+                             # Guess yes on native Windows.
+          mingw* | windows*) gl_cv_func_btowc_eof="guessing yes" ;;
+                             # Guess yes otherwise.
+          *)                 gl_cv_func_btowc_eof="guessing yes" ;;
         esac
         if test $LOCALE_FR != none; then
           if test "$cross_compiling" = yes
@@ -37394,8 +39244,9 @@ else $as_nop
         if test "$cross_compiling" = yes
 then :
   case "$host_os" in
-                     # Guess no on mingw.
-             mingw*) cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+               # Guess no on mingw.
+             mingw* | windows*)
+               cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
 #ifdef __MINGW32__
@@ -37412,9 +39263,9 @@ else $as_nop
 fi
 rm -rf conftest*
 
-                     ;;
-                     # Guess yes otherwise.
-             *)      gl_cv_func_btowc_consistent="guessing yes" ;;
+               ;;
+               # Guess yes otherwise.
+             *) gl_cv_func_btowc_consistent="guessing yes" ;;
            esac
 
 else $as_nop
@@ -37476,9 +39327,9 @@ else $as_nop
   if test "$cross_compiling" = yes
 then :
   case "$host_os" in
-                  # Guess yes on native Windows.
-          mingw*) gl_cv_func_mbrtowc_C_locale_sans_EILSEQ="guessing yes" ;;
-          *)      gl_cv_func_mbrtowc_C_locale_sans_EILSEQ="$gl_cross_guess_normal" ;;
+                             # Guess yes on native Windows.
+          mingw* | windows*) gl_cv_func_mbrtowc_C_locale_sans_EILSEQ="guessing yes" ;;
+          *)                 gl_cv_func_mbrtowc_C_locale_sans_EILSEQ="$gl_cross_guess_normal" ;;
         esac
 
 else $as_nop
@@ -37637,6 +39488,330 @@ printf "%s\n" "$gl_cv___builtin_expect" >&6; }
 
 
 
+
+
+
+
+
+
+          GL_GNULIB_C32_APPLY_TYPE_TEST=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_C32_APPLY_TYPE_TEST 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_C32_GET_TYPE_TEST=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_C32_GET_TYPE_TEST 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_C32ISALNUM=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_C32ISALNUM 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_C32ISALPHA=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_C32ISALPHA 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_C32ISBLANK=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_C32ISBLANK 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_C32ISCNTRL=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_C32ISCNTRL 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_C32ISDIGIT=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_C32ISDIGIT 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_C32ISGRAPH=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_C32ISGRAPH 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_C32ISLOWER=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_C32ISLOWER 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_C32ISPRINT=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_C32ISPRINT 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_C32ISPUNCT=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_C32ISPUNCT 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_C32ISSPACE=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_C32ISSPACE 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_C32ISUPPER=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_C32ISUPPER 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_C32ISXDIGIT=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_C32ISXDIGIT 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_C32TOLOWER=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_C32TOLOWER 1" >>confdefs.h
+
+
+
+
+
+
   REPLACE_CALLOC_FOR_CALLOC_GNU="$REPLACE_CALLOC_FOR_CALLOC_POSIX"
   if test $REPLACE_CALLOC_FOR_CALLOC_GNU = 0; then
 
@@ -37689,7 +39864,7 @@ fi
                              # Guess yes on musl systems.
          *-musl* | midipix*) ac_cv_func_calloc_0_nonnull="guessing yes" ;;
                              # Guess yes on native Windows.
-         mingw*)             ac_cv_func_calloc_0_nonnull="guessing yes" ;;
+         mingw* | windows*)  ac_cv_func_calloc_0_nonnull="guessing yes" ;;
                              # If we don't know, obey --enable-cross-guesses.
          *)                  ac_cv_func_calloc_0_nonnull="$gl_cross_guess_normal" ;;
        esac
@@ -38106,6 +40281,14 @@ printf "%s\n" "#define GNULIB_TEST_CHOWN 1" >>confdefs.h
 
 
 
+
+
+  # On mingw, these functions are defined in the libwinpthread library,
+  # which is better avoided.  In fact, the clock_gettime function is buggy
+  # in 32-bit mingw, when -D__MINGW_USE_VC2005_COMPAT is used (which Gnulib's
+  # year2038 module does): It leaves the upper 32 bits of the tv_sec field
+  # of the result uninitialized.
+
   # Solaris 2.5.1 needs -lposix4 to get the clock_gettime function.
   # Solaris 7 prefers the library name -lrt to the obsolescent name -lposix4.
 
@@ -38114,8 +40297,15 @@ printf "%s\n" "#define GNULIB_TEST_CHOWN 1" >>confdefs.h
   # library, inducing unnecessary run-time overhead.
   CLOCK_TIME_LIB=
 
-  gl_saved_libs=$LIBS
-    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for library containing clock_gettime" >&5
+  case "$host_os" in
+    mingw* | windows*)
+      ac_cv_func_clock_getres=no
+      ac_cv_func_clock_gettime=no
+      ac_cv_func_clock_settime=no
+      ;;
+    *)
+      gl_saved_libs=$LIBS
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for library containing clock_gettime" >&5
 printf %s "checking for library containing clock_gettime... " >&6; }
 if test ${ac_cv_search_clock_gettime+y}
 then :
@@ -38172,10 +40362,10 @@ if test "$ac_res" != no
 then :
   test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
   test "$ac_cv_search_clock_gettime" = "none required" ||
-                    CLOCK_TIME_LIB=$ac_cv_search_clock_gettime
+                        CLOCK_TIME_LIB=$ac_cv_search_clock_gettime
 fi
 
-    ac_fn_c_check_func "$LINENO" "clock_getres" "ac_cv_func_clock_getres"
+        ac_fn_c_check_func "$LINENO" "clock_getres" "ac_cv_func_clock_getres"
 if test "x$ac_cv_func_clock_getres" = xyes
 then :
   printf "%s\n" "#define HAVE_CLOCK_GETRES 1" >>confdefs.h
@@ -38194,7 +40384,10 @@ then :
 
 fi
 
-  LIBS=$gl_saved_libs
+      LIBS=$gl_saved_libs
+      ;;
+  esac
+
   # For backward compatibility.
   LIB_CLOCK_GETTIME="$CLOCK_TIME_LIB"
 
@@ -38255,9 +40448,6 @@ fi
     if test $DIR_HAS_FD_MEMBER = 0; then
       REPLACE_CLOSEDIR=1
     fi
-        case $host_os in
-      os2*) REPLACE_CLOSEDIR=1 ;;
-    esac
 
 
 
@@ -38321,16 +40511,16 @@ else $as_nop
   if test "$cross_compiling" = yes
 then :
   case "$host_os" in
-                            # Guess yes on glibc systems with Linux kernel.
-              linux*-gnu*)  gl_cv_struct_dirent_d_ino="guessing yes" ;;
-                            # Guess yes on musl systems with Linux kernel.
-              linux*-musl*) gl_cv_struct_dirent_d_ino="guessing yes" ;;
-                            # Guess yes on systems that emulate the Linux system calls.
-              midipix*)     gl_cv_struct_dirent_d_ino="guessing yes" ;;
-                            # Guess no on native Windows.
-              mingw*)       gl_cv_struct_dirent_d_ino="guessing no" ;;
-                            # If we don't know, obey --enable-cross-guesses.
-              *)            gl_cv_struct_dirent_d_ino="$gl_cross_guess_normal" ;;
+                                 # Guess yes on glibc systems with Linux kernel.
+              linux*-gnu*)       gl_cv_struct_dirent_d_ino="guessing yes" ;;
+                                 # Guess yes on musl systems with Linux kernel.
+              linux*-musl*)      gl_cv_struct_dirent_d_ino="guessing yes" ;;
+                                 # Guess yes on systems that emulate the Linux system calls.
+              midipix*)          gl_cv_struct_dirent_d_ino="guessing yes" ;;
+                                 # Guess no on native Windows.
+              mingw* | windows*) gl_cv_struct_dirent_d_ino="guessing no" ;;
+                                 # If we don't know, obey --enable-cross-guesses.
+              *)                 gl_cv_struct_dirent_d_ino="$gl_cross_guess_normal" ;;
             esac
 
 else $as_nop
@@ -38495,9 +40685,6 @@ printf "%s\n" "$gl_cv_func_dirfd_macro" >&6; }
     if test $DIR_HAS_FD_MEMBER = 0; then
       REPLACE_DIRFD=1
     fi
-        case "$host_os" in
-      os2*) REPLACE_DIRFD=1 ;;
-    esac
   fi
 
 
@@ -38660,9 +40847,9 @@ else $as_nop
   if test "$cross_compiling" = yes
 then :
   case "$host_os" in
-                 # Guess no on native Windows.
-         mingw*) gl_cv_func_dup_works="guessing no" ;;
-         *)      gl_cv_func_dup_works="guessing yes" ;;
+                            # Guess no on native Windows.
+         mingw* | windows*) gl_cv_func_dup_works="guessing no" ;;
+         *)                 gl_cv_func_dup_works="guessing yes" ;;
        esac
 
 else $as_nop
@@ -38758,7 +40945,7 @@ else $as_nop
   if test "$cross_compiling" = yes
 then :
   case "$host_os" in
-         mingw*) # on this platform, dup2 always returns 0 for success
+         mingw* | windows*) # on this platform, dup2 always returns 0 for success
            gl_cv_func_dup2_works="guessing no" ;;
          cygwin*) # on cygwin 1.5.x, dup2(1,1) returns 0
            gl_cv_func_dup2_works="guessing no" ;;
@@ -39022,7 +41209,14 @@ fi
   fi
 
 
-  if test $HAVE_FCHDIR = 0; then
+  if test $HAVE_FCHDIR = 1; then
+
+    if test $DIR_HAS_FD_MEMBER = 0; then
+            REPLACE_FCHDIR=1
+    fi
+  fi
+
+  if test $HAVE_FCHDIR = 0 || test $REPLACE_FCHDIR = 1; then
 
 printf "%s\n" "#define REPLACE_FCHDIR 1" >>confdefs.h
 
@@ -39035,16 +41229,16 @@ else $as_nop
   if test "$cross_compiling" = yes
 then :
   case "$host_os" in
-                             # Guess yes on Linux systems.
-            linux-* | linux) gl_cv_func_open_directory_works="guessing yes" ;;
-                             # Guess yes on systems that emulate the Linux system calls.
-            midipix*)        gl_cv_func_open_directory_works="guessing yes" ;;
-                             # Guess yes on glibc systems.
-            *-gnu* | gnu*)   gl_cv_func_open_directory_works="guessing yes" ;;
-                             # Guess no on native Windows.
-            mingw*)          gl_cv_func_open_directory_works="guessing no" ;;
-                             # If we don't know, obey --enable-cross-guesses.
-            *)               gl_cv_func_open_directory_works="$gl_cross_guess_normal" ;;
+                               # Guess yes on Linux systems.
+            linux-* | linux)   gl_cv_func_open_directory_works="guessing yes" ;;
+                               # Guess yes on systems that emulate the Linux system calls.
+            midipix*)          gl_cv_func_open_directory_works="guessing yes" ;;
+                               # Guess yes on glibc systems.
+            *-gnu* | gnu*)     gl_cv_func_open_directory_works="guessing yes" ;;
+                               # Guess no on native Windows.
+            mingw* | windows*) gl_cv_func_open_directory_works="guessing no" ;;
+                               # If we don't know, obey --enable-cross-guesses.
+            *)                 gl_cv_func_open_directory_works="$gl_cross_guess_normal" ;;
           esac
 
 else $as_nop
@@ -39087,7 +41281,7 @@ printf "%s\n" "#define REPLACE_OPEN_DIRECTORY 1" >>confdefs.h
   fi
 
 
-     if test $HAVE_FCHDIR = 0; then
+     if test $HAVE_FCHDIR = 0 || test $REPLACE_FCHDIR = 1; then
   GL_COND_OBJ_FCHDIR_TRUE=
   GL_COND_OBJ_FCHDIR_FALSE='#'
 else
@@ -39722,9 +41916,11 @@ else $as_nop
 fi
 rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
              ;;
-                   # Guess yes on native Windows.
-           mingw*) gl_cv_func_itold_works="guessing yes" ;;
-           *)      gl_cv_func_itold_works="guessing yes" ;;
+             # Guess yes on native Windows.
+           mingw* | windows*)
+             gl_cv_func_itold_works="guessing yes" ;;
+           *)
+             gl_cv_func_itold_works="guessing yes" ;;
          esac
 
 else $as_nop
@@ -39793,7 +41989,7 @@ _ACEOF
   esac
 
   case "$host_os" in
-    mingw*)
+    mingw* | windows*)
                                           gl_dirsep_regex='[/\\]'
       ;;
     *)
@@ -39957,7 +42153,8 @@ fi
 
 
 
-     gl_fnmatch_required_lowercase=`
+
+  gl_fnmatch_required_lowercase=`
     echo $gl_fnmatch_required | LC_ALL=C tr '[A-Z]' '[a-z]'
   `
 
@@ -40062,6 +42259,17 @@ char const *Apat = 'A' < '\\\\' ? "[A-\\\\\\\\]" : "[\\\\\\\\-A]";
                  exists in glibc 2.12, fixed in glibc 2.13.  */
               if (!y ("[/b", "[/b", 0)) /*"]]"*/
                 result |= 4;
+              /* glibc bug <https://sourceware.org/bugzilla/show_bug.cgi?id=17062>
+                 is fixed in glibc 2.20.
+                 glibc bugs <https://sourceware.org/bugzilla/show_bug.cgi?id=18032>
+                            <https://sourceware.org/bugzilla/show_bug.cgi?id=18036>
+                 are fixed in glibc 2.22.
+                 These bugs are not easy to test for reliably (without mmap),
+                 therefore test the glibc version.  */
+              #if defined __GLIBC__
+              if (__GLIBC__ == 2 && __GLIBC_MINOR__ < 22)
+                result |= 4;
+              #endif
               /* This test fails on FreeBSD 13.2, NetBSD 9.3, Cygwin 3.4.6.  */
               if (!y ("[[:alnum:]]", "a", 0))
                 result |= 8;
@@ -40121,6 +42329,16 @@ printf "%s\n" "$ac_res" >&6; }
       *yes) ;;
       *) REPLACE_FNMATCH=1 ;;
     esac
+
+    if test $SMALL_WCHAR_T = 1; then
+      case "$host_os" in
+        cygwin*)
+                                                  ;;
+        *)
+          REPLACE_FNMATCH=1
+          ;;
+      esac
+    fi
   fi
   if test $HAVE_FNMATCH = 0 || test $REPLACE_FNMATCH = 1; then
 
@@ -40356,7 +42574,7 @@ printf "%s\n" "#define GNULIB_TEST_FREE_POSIX 1" >>confdefs.h
 
 
   case "$host_os" in
-    mingw* | solaris*)
+    darwin* | mingw* | windows* | solaris*)
                         REPLACE_FSTAT=1
       ;;
   esac
@@ -40396,7 +42614,7 @@ fi
   if test -z "$GL_COND_OBJ_FSTAT_TRUE"; then :
 
     case "$host_os" in
-      mingw*)
+      mingw* | windows*)
 
 
 
@@ -40493,7 +42711,7 @@ printf "%s\n" "$gl_cv_func_fstatat_zero_flag" >&6; }
     esac
 
     case $host_os in
-      solaris*)
+      darwin* | solaris*)
         REPLACE_FSTATAT=1 ;;
     esac
 
@@ -40546,7 +42764,7 @@ printf "%s\n" "#define GNULIB_TEST_FSTATAT 1" >>confdefs.h
 
   gl_abort_bug=no
   case "$host_os" in
-    mingw*)
+    mingw* | windows*)
       gl_cv_func_getcwd_path_max=yes
       ;;
     *)
@@ -42280,6 +44498,8 @@ printf "%s\n" "#define GNULIB_TEST_GETPROGNAME 1" >>confdefs.h
 
 
 
+
+
   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for getrandom" >&5
 printf %s "checking for getrandom... " >&6; }
 if test ${gl_cv_onwards_func_getrandom+y}
@@ -42398,7 +44618,7 @@ printf "%s\n" "$gl_cv_func_getrandom_ok" >&6; }
   fi
 
   case "$host_os" in
-    mingw*)
+    mingw* | windows*)
       ac_fn_c_check_header_compile "$LINENO" "bcrypt.h" "ac_cv_header_bcrypt_h" "#include <windows.h>
 
 "
@@ -42580,7 +44800,7 @@ printf "%s\n" "$gl_cv_func_gettimeofday_posix_signature" >&6; }
       REPLACE_GETTIMEOFDAY=1
     fi
             case "$host_os" in
-      mingw*) REPLACE_GETTIMEOFDAY=1 ;;
+      mingw* | windows*) REPLACE_GETTIMEOFDAY=1 ;;
     esac
   fi
 
@@ -43159,6 +45379,48 @@ fi
 
 
 
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether the compiler generally respects inline" >&5
+printf %s "checking whether the compiler generally respects inline... " >&6; }
+if test ${gl_cv_c_inline_effective+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test $ac_cv_c_inline = no; then
+       gl_cv_c_inline_effective=no
+     else
+                                          cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+#ifdef __NO_INLINE__
+               #error "inline is not effective"
+             #endif
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_c_inline_effective=yes
+else $as_nop
+  gl_cv_c_inline_effective=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+     fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_c_inline_effective" >&5
+printf "%s\n" "$gl_cv_c_inline_effective" >&6; }
+  if test $gl_cv_c_inline_effective = yes; then
+
+printf "%s\n" "#define HAVE_INLINE 1" >>confdefs.h
+
+  fi
+
+
+
 
 
 
@@ -43301,6 +45563,585 @@ printf "%s\n" "#define GNULIB_ISBLANK 1" >>confdefs.h
 
 
 
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for iswblank" >&5
+printf %s "checking for iswblank... " >&6; }
+if test ${gl_cv_onwards_func_iswblank+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+  exec 9>&6 6>/dev/null
+
+       case "$host_os" in
+
+         linux*-android*)
+           ac_fn_check_decl "$LINENO" "iswblank" "ac_cv_have_decl_iswblank" "#include <wctype.h>
+" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_iswblank" = xyes
+then :
+
+fi
+           if test $ac_cv_have_decl_iswblank = yes; then
+             ac_fn_c_check_func "$LINENO" "iswblank" "ac_cv_func_iswblank"
+if test "x$ac_cv_func_iswblank" = xyes
+then :
+
+fi
+
+             if test $ac_cv_func_iswblank = yes; then
+               gl_cv_onwards_func_iswblank=yes
+             else
+                                                            gl_cv_onwards_func_iswblank='future OS version'
+             fi
+           else
+             gl_cv_onwards_func_iswblank='future OS version'
+           fi
+           ;;
+
+
+         *)
+           ac_fn_c_check_func "$LINENO" "iswblank" "ac_cv_func_iswblank"
+if test "x$ac_cv_func_iswblank" = xyes
+then :
+
+fi
+
+           gl_cv_onwards_func_iswblank=$ac_cv_func_iswblank
+           ;;
+
+       esac
+
+  exec 6>&9 9>&-
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_onwards_func_iswblank" >&5
+printf "%s\n" "$gl_cv_onwards_func_iswblank" >&6; }
+
+  case "$gl_cv_onwards_func_iswblank" in
+    future*) ac_cv_func_iswblank=no ;;
+    *)       ac_cv_func_iswblank=$gl_cv_onwards_func_iswblank ;;
+  esac
+  if test $ac_cv_func_iswblank = yes; then
+
+printf "%s\n" "#define HAVE_ISWBLANK 1" >>confdefs.h
+
+  fi
+
+
+  ac_fn_check_decl "$LINENO" "iswblank" "ac_cv_have_decl_iswblank" "
+    #include <wchar.h>
+    #include <wctype.h>
+
+" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_iswblank" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_ISWBLANK $ac_have_decl" >>confdefs.h
+
+  if test $ac_cv_func_iswblank = no; then
+    HAVE_ISWBLANK=0
+    if test $ac_cv_have_decl_iswblank = yes \
+       || case "$gl_cv_onwards_func_iswblank" in \
+            future*) true ;; \
+            *) false ;; \
+          esac; then
+      REPLACE_ISWBLANK=1
+    fi
+  fi
+  if test $HAVE_ISWCNTRL = 0 || test $REPLACE_ISWCNTRL = 1; then
+        :
+  else
+    if test $HAVE_ISWBLANK = 0 || test $REPLACE_ISWBLANK = 1; then
+            :
+    fi
+  fi
+
+
+
+     if ! { test $HAVE_ISWCNTRL = 0 || test $REPLACE_ISWCNTRL = 1; } && { test $HAVE_ISWBLANK = 0 || test $REPLACE_ISWBLANK = 1; }; then
+  GL_COND_OBJ_ISWBLANK_TRUE=
+  GL_COND_OBJ_ISWBLANK_FALSE='#'
+else
+  GL_COND_OBJ_ISWBLANK_TRUE='#'
+  GL_COND_OBJ_ISWBLANK_FALSE=
+fi
+:
+    if test -z "${GL_COND_OBJ_ISWBLANK_TRUE}" && test -z "${GL_COND_OBJ_ISWBLANK_FALSE}"; then
+    GL_COND_OBJ_ISWBLANK_TRUE='#'
+    GL_COND_OBJ_ISWBLANK_FALSE='#'
+  fi
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_ISWBLANK=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_ISWBLANK 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+     if test $HAVE_WCTYPE_T = 0 || test $GNULIBHEADERS_OVERRIDE_WINT_T = 1 || test $REPLACE_WCTYPE = 1; then
+  GL_COND_OBJ_ISWCTYPE_TRUE=
+  GL_COND_OBJ_ISWCTYPE_FALSE='#'
+else
+  GL_COND_OBJ_ISWCTYPE_TRUE='#'
+  GL_COND_OBJ_ISWCTYPE_FALSE=
+fi
+:
+    if test -z "${GL_COND_OBJ_ISWCTYPE_TRUE}" && test -z "${GL_COND_OBJ_ISWCTYPE_FALSE}"; then
+    GL_COND_OBJ_ISWCTYPE_TRUE='#'
+    GL_COND_OBJ_ISWCTYPE_FALSE='#'
+  fi
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_ISWCTYPE=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_ISWCTYPE 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+  if test $HAVE_ISWCNTRL = 0 || test $REPLACE_ISWCNTRL = 1; then
+        REPLACE_ISWDIGIT="$REPLACE_ISWCNTRL"
+  else
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether iswdigit is ISO C compliant" >&5
+printf %s "checking whether iswdigit is ISO C compliant... " >&6; }
+if test ${gl_cv_func_iswdigit_works+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+                     case "$host_os" in
+         # Guess no on FreeBSD, NetBSD, Solaris, native Windows.
+         freebsd* | dragonfly* | netbsd* | solaris* | mingw* | windows*)
+           gl_cv_func_iswdigit_works="guessing no" ;;
+         # Guess yes otherwise.
+         *) gl_cv_func_iswdigit_works="guessing yes" ;;
+       esac
+       if test $LOCALE_FR != none || test $LOCALE_JA != none || test $LOCALE_FR_UTF8 != none || test $LOCALE_ZH_CN != none; then
+         if test "$cross_compiling" = yes
+then :
+  :
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wchar.h>
+#include <wctype.h>
+
+/* Returns the value of iswdigit for the multibyte character s[0..n-1].  */
+static int
+for_character (const char *s, size_t n)
+{
+  mbstate_t state;
+  wchar_t wc;
+  size_t ret;
+
+  memset (&state, '\0', sizeof (mbstate_t));
+  wc = (wchar_t) 0xBADFACE;
+  ret = mbrtowc (&wc, s, n, &state);
+  if (ret != n)
+    abort ();
+
+  return iswdigit (wc);
+}
+
+int
+main (int argc, char *argv[])
+{
+  int is;
+  int result = 0;
+
+  if (strcmp ("$LOCALE_FR", "none") != 0
+      && setlocale (LC_ALL, "$LOCALE_FR") != NULL)
+    {
+      /* This fails on mingw, MSVC 14.  */
+      /* U+00B2 SUPERSCRIPT TWO */
+      is = for_character ("\262", 1);
+      if (!(is == 0))
+        result |= 1;
+    }
+  if (strcmp ("$LOCALE_JA", "none") != 0
+      && setlocale (LC_ALL, "$LOCALE_JA") != NULL)
+    {
+      /* This fails on NetBSD 8.0.  */
+      /* U+FF11 FULLWIDTH DIGIT ONE */
+      is = for_character ("\243\261", 2);
+      if (!(is == 0))
+        result |= 2;
+    }
+  if (strcmp ("$LOCALE_FR_UTF8", "none") != 0
+      && setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
+    {
+      /* This fails on FreeBSD 13.0, NetBSD 8.0, MSVC 14.  */
+      /* U+0663 ARABIC-INDIC DIGIT THREE */
+      is = for_character ("\331\243", 2);
+      if (!(is == 0))
+        result |= 4;
+      /* This fails on FreeBSD 13.0, NetBSD 8.0, MSVC 14.  */
+      /* U+FF11 FULLWIDTH DIGIT ONE */
+      is = for_character ("\357\274\221", 3);
+      if (!(is == 0))
+        result |= 8;
+    }
+  if (strcmp ("$LOCALE_ZH_CN", "none") != 0
+      && setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL)
+    {
+      /* This fails on NetBSD 8.0, Solaris 10, Solaris 11.4.  */
+      /* U+FF11 FULLWIDTH DIGIT ONE */
+      is = for_character ("\243\261", 2);
+      if (!(is == 0))
+        result |= 16;
+    }
+  return result;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_iswdigit_works=yes
+else $as_nop
+  gl_cv_func_iswdigit_works=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+       fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_iswdigit_works" >&5
+printf "%s\n" "$gl_cv_func_iswdigit_works" >&6; }
+    case "$gl_cv_func_iswdigit_works" in
+      *yes) ;;
+      *) REPLACE_ISWDIGIT=1 ;;
+    esac
+  fi
+
+
+     if ! { test $HAVE_ISWCNTRL = 0 || test $REPLACE_ISWCNTRL = 1; } && test $REPLACE_ISWDIGIT = 1; then
+  GL_COND_OBJ_ISWDIGIT_TRUE=
+  GL_COND_OBJ_ISWDIGIT_FALSE='#'
+else
+  GL_COND_OBJ_ISWDIGIT_TRUE='#'
+  GL_COND_OBJ_ISWDIGIT_FALSE=
+fi
+:
+    if test -z "${GL_COND_OBJ_ISWDIGIT_TRUE}" && test -z "${GL_COND_OBJ_ISWDIGIT_FALSE}"; then
+    GL_COND_OBJ_ISWDIGIT_TRUE='#'
+    GL_COND_OBJ_ISWDIGIT_FALSE='#'
+  fi
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_ISWDIGIT=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_ISWDIGIT 1" >>confdefs.h
+
+
+
+
+
+
+
+  if test $HAVE_ISWCNTRL = 0 || test $REPLACE_ISWCNTRL = 1; then
+        REPLACE_ISWPUNCT="$REPLACE_ISWCNTRL"
+  else
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether iswpunct is consistent with ispunct" >&5
+printf %s "checking whether iswpunct is consistent with ispunct... " >&6; }
+if test ${gl_cv_func_iswpunct_works+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+            # Guess no on Android.
+            android*) gl_cv_func_iswpunct_works="guessing no" ;;
+            # Guess yes otherwise.
+            *)        gl_cv_func_iswpunct_works="guessing yes" ;;
+          esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <ctype.h>
+#include <wchar.h>
+#include <wctype.h>
+int
+main (int argc, char *argv[])
+{
+  int result = 0;
+  /* This fails on Android 11.  */
+  if ((! iswpunct ('\`')) != (! ispunct ('\`')))
+    result |= 1;
+  return result;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_iswpunct_works=yes
+else $as_nop
+  gl_cv_func_iswpunct_works=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_iswpunct_works" >&5
+printf "%s\n" "$gl_cv_func_iswpunct_works" >&6; }
+    case "$gl_cv_func_iswpunct_works" in
+      *yes) ;;
+      *) REPLACE_ISWPUNCT=1 ;;
+    esac
+  fi
+
+
+     if ! { test $HAVE_ISWCNTRL = 0 || test $REPLACE_ISWCNTRL = 1; } && test $REPLACE_ISWPUNCT = 1; then
+  GL_COND_OBJ_ISWPUNCT_TRUE=
+  GL_COND_OBJ_ISWPUNCT_FALSE='#'
+else
+  GL_COND_OBJ_ISWPUNCT_TRUE='#'
+  GL_COND_OBJ_ISWPUNCT_FALSE=
+fi
+:
+    if test -z "${GL_COND_OBJ_ISWPUNCT_TRUE}" && test -z "${GL_COND_OBJ_ISWPUNCT_FALSE}"; then
+    GL_COND_OBJ_ISWPUNCT_TRUE='#'
+    GL_COND_OBJ_ISWPUNCT_FALSE='#'
+  fi
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_ISWPUNCT=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_ISWPUNCT 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+  if test $HAVE_ISWCNTRL = 0 || test $REPLACE_ISWCNTRL = 1; then
+        REPLACE_ISWXDIGIT="$REPLACE_ISWCNTRL"
+  else
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether iswxdigit is ISO C compliant" >&5
+printf %s "checking whether iswxdigit is ISO C compliant... " >&6; }
+if test ${gl_cv_func_iswxdigit_works+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+                     case "$host_os" in
+         # Guess no on FreeBSD, NetBSD, Solaris, native Windows.
+         freebsd* | dragonfly* | netbsd* | solaris* | mingw* | windows*)
+           gl_cv_func_iswxdigit_works="guessing no" ;;
+         # Guess yes otherwise.
+         *) gl_cv_func_iswxdigit_works="guessing yes" ;;
+       esac
+       if test $LOCALE_JA != none || test $LOCALE_FR_UTF8 != none || test $LOCALE_ZH_CN != none; then
+         if test "$cross_compiling" = yes
+then :
+  :
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wchar.h>
+#include <wctype.h>
+
+/* Returns the value of iswxdigit for the multibyte character s[0..n-1].  */
+static int
+for_character (const char *s, size_t n)
+{
+  mbstate_t state;
+  wchar_t wc;
+  size_t ret;
+
+  memset (&state, '\0', sizeof (mbstate_t));
+  wc = (wchar_t) 0xBADFACE;
+  ret = mbrtowc (&wc, s, n, &state);
+  if (ret != n)
+    abort ();
+
+  return iswxdigit (wc);
+}
+
+int
+main (int argc, char *argv[])
+{
+  int is;
+  int result = 0;
+
+  if (strcmp ("$LOCALE_JA", "none") != 0
+      && setlocale (LC_ALL, "$LOCALE_JA") != NULL)
+    {
+      /* This fails on NetBSD 8.0.  */
+      /* U+FF21 FULLWIDTH LATIN CAPITAL LETTER A */
+      is = for_character ("\243\301", 2);
+      if (!(is == 0))
+        result |= 1;
+    }
+  if (strcmp ("$LOCALE_FR_UTF8", "none") != 0
+      && setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
+    {
+      /* This fails on FreeBSD 13.0.  */
+      /* U+0663 ARABIC-INDIC DIGIT THREE */
+      is = for_character ("\331\243", 2);
+      if (!(is == 0))
+        result |= 2;
+      /* This fails on MSVC 14.  */
+      /* U+FF21 FULLWIDTH LATIN CAPITAL LETTER A */
+      is = for_character ("\357\274\241", 3);
+      if (!(is == 0))
+        result |= 4;
+    }
+  if (strcmp ("$LOCALE_ZH_CN", "none") != 0
+      && setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL)
+    {
+      /* This fails on Solaris 10, Solaris 11.4.  */
+      /* U+FF11 FULLWIDTH DIGIT ONE */
+      is = for_character ("\243\261", 2);
+      if (!(is == 0))
+        result |= 8;
+    }
+  return result;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_iswxdigit_works=yes
+else $as_nop
+  gl_cv_func_iswxdigit_works=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+       fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_iswxdigit_works" >&5
+printf "%s\n" "$gl_cv_func_iswxdigit_works" >&6; }
+    case "$gl_cv_func_iswxdigit_works" in
+      *yes) ;;
+      *) REPLACE_ISWXDIGIT=1 ;;
+    esac
+  fi
+
+
+     if ! { test $HAVE_ISWCNTRL = 0 || test $REPLACE_ISWCNTRL = 1; } && test $REPLACE_ISWXDIGIT = 1; then
+  GL_COND_OBJ_ISWXDIGIT_TRUE=
+  GL_COND_OBJ_ISWXDIGIT_FALSE='#'
+else
+  GL_COND_OBJ_ISWXDIGIT_TRUE='#'
+  GL_COND_OBJ_ISWXDIGIT_FALSE=
+fi
+:
+    if test -z "${GL_COND_OBJ_ISWXDIGIT_TRUE}" && test -z "${GL_COND_OBJ_ISWXDIGIT_FALSE}"; then
+    GL_COND_OBJ_ISWXDIGIT_TRUE='#'
+    GL_COND_OBJ_ISWXDIGIT_FALSE='#'
+  fi
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_ISWXDIGIT=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_ISWXDIGIT 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
 
 
 
@@ -43526,7 +46367,7 @@ then :
                                 # Guess yes on musl systems.
             *-musl* | midipix*) gl_cv_func_localeconv_works="guessing yes" ;;
                                 # Guess no on native Windows.
-            mingw*)             gl_cv_func_localeconv_works="guessing no" ;;
+            mingw* | windows*)  gl_cv_func_localeconv_works="guessing no" ;;
                                 # If we don't know, obey --enable-cross-guesses.
             *)                  gl_cv_func_localeconv_works="$gl_cross_guess_normal" ;;
           esac
@@ -43661,7 +46502,7 @@ then :
           *-android*)         gl_cv_pthread_rwlock_rdlock_prefer_writer="guessing no" ;;
                               # Guess yes on native Windows with the mingw-w64 winpthreads library.
                               # Guess no on native Windows with the gnulib windows-rwlock module.
-          mingw*)             if test "$gl_use_threads" = yes || test "$gl_use_threads" = posix; then
+          mingw* | windows*)  if test "$gl_use_threads" = yes || test "$gl_use_threads" = posix; then
                                 gl_cv_pthread_rwlock_rdlock_prefer_writer="guessing yes"
                               else
                                 gl_cv_pthread_rwlock_rdlock_prefer_writer="guessing no"
@@ -43856,7 +46697,7 @@ printf "%s\n" "#define GNULIB_LOCK 1" >>confdefs.h
   if test $ac_cv_func_lstat = yes; then
 
     case $host_os,$gl_cv_func_lstat_dereferences_slashed_symlink in
-      solaris* | *no)
+      darwin* | solaris* | *no)
         REPLACE_LSTAT=1
         ;;
     esac
@@ -43920,7 +46761,7 @@ then :
           # Guess yes on platforms where we know the result.
           *-gnu* | freebsd* | netbsd* | openbsd* | bitrig* \
           | gnu* | *-musl* | midipix* | midnightbsd* \
-          | hpux* | solaris* | cygwin* | mingw* | msys* )
+          | hpux* | solaris* | cygwin* | mingw* | windows* | msys* )
             ac_cv_func_malloc_0_nonnull="guessing yes" ;;
           # If we don't know, obey --enable-cross-guesses.
           *) ac_cv_func_malloc_0_nonnull="$gl_cross_guess_normal" ;;
@@ -43935,7 +46776,8 @@ int
 main (void)
 {
 void *p = malloc (0);
-            int result = !p;
+            void * volatile vp = p;
+            int result = !vp;
             free (p);
             return result;
   ;
@@ -44041,6 +46883,314 @@ printf "%s\n" "#define GNULIB_TEST_MALLOC_POSIX 1" >>confdefs.h
 
 
 
+
+  if test $gl_cv_func_mbrtoc32 = no; then
+    HAVE_MBRTOC32=0
+  else
+    if test $GNULIBHEADERS_OVERRIDE_CHAR32_T = 1 || test $REPLACE_MBSTATE_T = 1; then
+      REPLACE_MBRTOC32=1
+    else
+
+
+     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether mbrtoc32 works on empty input" >&5
+printf %s "checking whether mbrtoc32 works on empty input... " >&6; }
+if test ${gl_cv_func_mbrtoc32_empty_input+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+      if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+                              # Guess no on glibc systems.
+           *-gnu* | gnu*)     gl_cv_func_mbrtoc32_empty_input="guessing no" ;;
+                              # Guess no on Android.
+           linux*-android*)   gl_cv_func_mbrtoc32_empty_input="guessing no" ;;
+                              # Guess no on native Windows.
+           mingw* | windows*) gl_cv_func_mbrtoc32_empty_input="guessing no" ;;
+           *)                 gl_cv_func_mbrtoc32_empty_input="guessing yes" ;;
+         esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+           #ifdef __HAIKU__
+            #include <stdint.h>
+           #endif
+           #include <uchar.h>
+           static char32_t wc;
+           static mbstate_t mbs;
+           int
+           main (void)
+           {
+             return mbrtoc32 (&wc, "", 0, &mbs) != (size_t) -2;
+           }
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_mbrtoc32_empty_input=yes
+else $as_nop
+  gl_cv_func_mbrtoc32_empty_input=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_mbrtoc32_empty_input" >&5
+printf "%s\n" "$gl_cv_func_mbrtoc32_empty_input" >&6; }
+
+
+     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether the C locale is free of encoding errors" >&5
+printf %s "checking whether the C locale is free of encoding errors... " >&6; }
+if test ${gl_cv_func_mbrtoc32_C_locale_sans_EILSEQ+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+                             # Guess yes on native Windows.
+          mingw* | windows*) gl_cv_func_mbrtoc32_C_locale_sans_EILSEQ="guessing yes" ;;
+          *)                 gl_cv_func_mbrtoc32_C_locale_sans_EILSEQ="$gl_cross_guess_normal" ;;
+        esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <limits.h>
+            #include <locale.h>
+            #ifdef __HAIKU__
+             #include <stdint.h>
+            #endif
+            #include <uchar.h>
+
+int
+main (void)
+{
+
+            int i;
+            char *locale = setlocale (LC_ALL, "C");
+            if (! locale)
+              return 2;
+            for (i = CHAR_MIN; i <= CHAR_MAX; i++)
+              {
+                char c = i;
+                char32_t wc;
+                mbstate_t mbs = { 0, };
+                size_t ss = mbrtoc32 (&wc, &c, 1, &mbs);
+                if (1 < ss)
+                  return 3;
+              }
+            return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_mbrtoc32_C_locale_sans_EILSEQ=yes
+else $as_nop
+  gl_cv_func_mbrtoc32_C_locale_sans_EILSEQ=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_mbrtoc32_C_locale_sans_EILSEQ" >&5
+printf "%s\n" "$gl_cv_func_mbrtoc32_C_locale_sans_EILSEQ" >&6; }
+
+      case "$gl_cv_func_mbrtoc32_empty_input" in
+        *yes) ;;
+        *)
+printf "%s\n" "#define MBRTOC32_EMPTY_INPUT_BUG 1" >>confdefs.h
+
+           REPLACE_MBRTOC32=1
+           ;;
+      esac
+      case "$gl_cv_func_mbrtoc32_C_locale_sans_EILSEQ" in
+        *yes) ;;
+        *)
+printf "%s\n" "#define MBRTOC32_IN_C_LOCALE_MAYBE_EILSEQ 1" >>confdefs.h
+
+           REPLACE_MBRTOC32=1
+           ;;
+      esac
+    fi
+    if test $HAVE_WORKING_MBRTOC32 = 0; then
+      REPLACE_MBRTOC32=1
+    fi
+  fi
+
+
+     if test $HAVE_MBRTOC32 = 0 || test $REPLACE_MBRTOC32 = 1; then
+  GL_COND_OBJ_MBRTOC32_TRUE=
+  GL_COND_OBJ_MBRTOC32_FALSE='#'
+else
+  GL_COND_OBJ_MBRTOC32_TRUE='#'
+  GL_COND_OBJ_MBRTOC32_FALSE=
+fi
+:
+    if test -z "${GL_COND_OBJ_MBRTOC32_TRUE}" && test -z "${GL_COND_OBJ_MBRTOC32_FALSE}"; then
+    GL_COND_OBJ_MBRTOC32_TRUE='#'
+    GL_COND_OBJ_MBRTOC32_FALSE='#'
+  fi
+
+  if test -z "$GL_COND_OBJ_MBRTOC32_TRUE"; then :
+
+    if test $REPLACE_MBSTATE_T = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS lc-charset-dispatch.$ac_objext"
+
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS mbtowc-lock.$ac_objext"
+
+
+
+
+  CFLAG_VISIBILITY=
+  HAVE_VISIBILITY=0
+  if test -n "$GCC"; then
+                { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether the -Werror option is usable" >&5
+printf %s "checking whether the -Werror option is usable... " >&6; }
+if test ${gl_cv_cc_vis_werror+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  gl_save_CFLAGS="$CFLAGS"
+       CFLAGS="$CFLAGS -Werror"
+       cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_cc_vis_werror=yes
+else $as_nop
+  gl_cv_cc_vis_werror=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+       CFLAGS="$gl_save_CFLAGS"
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_cc_vis_werror" >&5
+printf "%s\n" "$gl_cv_cc_vis_werror" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for simple visibility declarations" >&5
+printf %s "checking for simple visibility declarations... " >&6; }
+if test ${gl_cv_cc_visibility+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  gl_save_CFLAGS="$CFLAGS"
+       CFLAGS="$CFLAGS -fvisibility=hidden"
+                                          if test $gl_cv_cc_vis_werror = yes; then
+         CFLAGS="$CFLAGS -Werror"
+       fi
+       cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+extern __attribute__((__visibility__("hidden"))) int hiddenvar;
+              extern __attribute__((__visibility__("default"))) int exportedvar;
+              extern __attribute__((__visibility__("hidden"))) int hiddenfunc (void);
+              extern __attribute__((__visibility__("default"))) int exportedfunc (void);
+              void dummyfunc (void);
+              int hiddenvar;
+              int exportedvar;
+              int hiddenfunc (void) { return 51; }
+              int exportedfunc (void) { return 1225736919; }
+              void dummyfunc (void) {}
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_cc_visibility=yes
+else $as_nop
+  gl_cv_cc_visibility=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+       CFLAGS="$gl_save_CFLAGS"
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_cc_visibility" >&5
+printf "%s\n" "$gl_cv_cc_visibility" >&6; }
+    if test $gl_cv_cc_visibility = yes; then
+      CFLAG_VISIBILITY="-fvisibility=hidden"
+      HAVE_VISIBILITY=1
+    fi
+  fi
+
+
+
+printf "%s\n" "#define HAVE_VISIBILITY $HAVE_VISIBILITY" >>confdefs.h
+
+
+
+    fi
+
+  :
+
+
+fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_MBRTOC32=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_MBRTOC32 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
   if test $ac_cv_func_mbrtowc = no; then
     HAVE_MBRTOWC=0
     ac_fn_check_decl "$LINENO" "mbrtowc" "ac_cv_have_decl_mbrtowc" "
@@ -44209,13 +47359,15 @@ then :
 else $as_nop
 
                   case "$host_os" in
-                                   # Guess no on HP-UX, Solaris, native Windows.
-        hpux* | solaris* | mingw*) gl_cv_func_mbrtowc_retval="guessing no" ;;
-                                   # Guess yes otherwise.
-        *)                         gl_cv_func_mbrtowc_retval="guessing yes" ;;
+          # Guess no on HP-UX, Solaris, native Windows.
+        hpux* | solaris* | mingw* | windows*)
+          gl_cv_func_mbrtowc_retval="guessing no" ;;
+          # Guess yes otherwise.
+        *)
+          gl_cv_func_mbrtowc_retval="guessing yes" ;;
       esac
       if test $LOCALE_FR_UTF8 != none || test $LOCALE_JA != none \
-         || { case "$host_os" in mingw*) true;; *) false;; esac; }; then
+         || { case "$host_os" in mingw* | windows*) true;; *) false;; esac; }; then
         if test "$cross_compiling" = yes
 then :
   :
@@ -44400,12 +47552,12 @@ then :
 else $as_nop
 
                case "$host_os" in
-               # Guess yes on native Windows.
-       mingw*) gl_cv_func_mbrtowc_stores_incomplete="guessing yes" ;;
-       *)      gl_cv_func_mbrtowc_stores_incomplete="guessing no" ;;
+                          # Guess yes on native Windows.
+       mingw* | windows*) gl_cv_func_mbrtowc_stores_incomplete="guessing yes" ;;
+       *)                 gl_cv_func_mbrtowc_stores_incomplete="guessing no" ;;
      esac
      case "$host_os" in
-       mingw*)
+       mingw* | windows*)
          if test "$cross_compiling" = yes
 then :
   :
@@ -44535,7 +47687,7 @@ then :
                                 # Guess no on Android.
           linux*-android*)      gl_cv_func_mbrtowc_empty_input="guessing no" ;;
                                 # Guess no on native Windows.
-          mingw*)               gl_cv_func_mbrtowc_empty_input="guessing no" ;;
+          mingw* | windows*)    gl_cv_func_mbrtowc_empty_input="guessing no" ;;
           *)                    gl_cv_func_mbrtowc_empty_input="guessing yes" ;;
         esac
 
@@ -44577,9 +47729,9 @@ else $as_nop
   if test "$cross_compiling" = yes
 then :
   case "$host_os" in
-                  # Guess yes on native Windows.
-          mingw*) gl_cv_func_mbrtowc_C_locale_sans_EILSEQ="guessing yes" ;;
-          *)      gl_cv_func_mbrtowc_C_locale_sans_EILSEQ="$gl_cross_guess_normal" ;;
+                             # Guess yes on native Windows.
+          mingw* | windows*) gl_cv_func_mbrtowc_C_locale_sans_EILSEQ="guessing yes" ;;
+          *)                 gl_cv_func_mbrtowc_C_locale_sans_EILSEQ="$gl_cross_guess_normal" ;;
         esac
 
 else $as_nop
@@ -44687,7 +47839,9 @@ printf "%s\n" "#define MBRTOWC_IN_C_LOCALE_MAYBE_EILSEQ 1" >>confdefs.h
   fi
   if test $REPLACE_MBSTATE_T = 1; then
     case "$host_os" in
-      mingw*) MBRTOWC_LIB= ;;
+      mingw* | windows*)
+        MBRTOWC_LIB=
+        ;;
       *)
 
 
@@ -44698,7 +47852,7 @@ then :
   printf %s "(cached) " >&6
 else $as_nop
   case "$host_os" in
-       cygwin* | mingw*)
+       cygwin* | mingw* | windows*)
                                              gl_cv_have_weak="guessing no"
          ;;
        *)
@@ -45005,7 +48159,7 @@ printf "%s\n" "#define HAVE_DECL_MBSINIT $ac_have_decl" >>confdefs.h
       REPLACE_MBSINIT=1
     else
                         case "$host_os" in
-        mingw*) REPLACE_MBSINIT=1 ;;
+        mingw* | windows*) REPLACE_MBSINIT=1 ;;
       esac
     fi
   fi
@@ -45062,6 +48216,36 @@ printf "%s\n" "#define GNULIB_TEST_MBSINIT 1" >>confdefs.h
 
 
 
+
+
+  gl_LIBOBJS="$gl_LIBOBJS mbsrtoc32s-state.$ac_objext"
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_MBSRTOC32S=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_MBSRTOC32S 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
   if test $ac_cv_func_mbsrtowcs = no; then
     HAVE_MBSRTOWCS=0
     ac_fn_check_decl "$LINENO" "mbsrtowcs" "ac_cv_have_decl_mbsrtowcs" "
@@ -45097,10 +48281,12 @@ then :
 else $as_nop
 
                   case "$host_os" in
-                                   # Guess no on HP-UX, Solaris, mingw.
-        hpux* | solaris* | mingw*) gl_cv_func_mbsrtowcs_works="guessing no" ;;
-                                   # Guess yes otherwise.
-        *)                         gl_cv_func_mbsrtowcs_works="guessing yes" ;;
+          # Guess no on HP-UX, Solaris, mingw.
+        hpux* | solaris* | mingw* | windows*)
+          gl_cv_func_mbsrtowcs_works="guessing no" ;;
+          # Guess yes otherwise.
+        *)
+          gl_cv_func_mbsrtowcs_works="guessing yes" ;;
       esac
       if test $LOCALE_FR != none || test $LOCALE_FR_UTF8 != none || test $LOCALE_JA != none || test $LOCALE_ZH_CN != none; then
         if test "$cross_compiling" = yes
@@ -45211,9 +48397,9 @@ else $as_nop
   if test "$cross_compiling" = yes
 then :
   case "$host_os" in
-                  # Guess yes on native Windows.
-          mingw*) gl_cv_func_mbrtowc_C_locale_sans_EILSEQ="guessing yes" ;;
-          *)      gl_cv_func_mbrtowc_C_locale_sans_EILSEQ="$gl_cross_guess_normal" ;;
+                             # Guess yes on native Windows.
+          mingw* | windows*) gl_cv_func_mbrtowc_C_locale_sans_EILSEQ="guessing yes" ;;
+          *)                 gl_cv_func_mbrtowc_C_locale_sans_EILSEQ="$gl_cross_guess_normal" ;;
         esac
 
 else $as_nop
@@ -45329,6 +48515,33 @@ printf "%s\n" "#define GNULIB_TEST_MBSRTOWCS 1" >>confdefs.h
 
 
 
+
+
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_MBSZERO=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_MBSZERO 1" >>confdefs.h
+
+
+
+
+
+
+
+
   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for mbtowc" >&5
 printf %s "checking for mbtowc... " >&6; }
 if test ${gl_cv_onwards_func_mbtowc+y}
@@ -45960,14 +49173,15 @@ else $as_nop
      if test "$cross_compiling" = yes
 then :
   case "$host_os" in
-                           # Guess yes on Linux systems.
-          linux-* | linux) gl_cv_func_mkdir_trailing_slash_works="guessing yes" ;;
-                           # Guess yes on systems that emulate the Linux system calls.
-          midipix*)        gl_cv_func_mkdir_trailing_slash_works="guessing yes" ;;
-                           # Guess yes on glibc systems.
-          *-gnu* | gnu*)   gl_cv_func_mkdir_trailing_slash_works="guessing yes" ;;
-                           # Guess yes on MSVC, no on mingw.
-          mingw*)          cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+                             # Guess yes on Linux systems.
+          linux-* | linux)   gl_cv_func_mkdir_trailing_slash_works="guessing yes" ;;
+                             # Guess yes on systems that emulate the Linux system calls.
+          midipix*)          gl_cv_func_mkdir_trailing_slash_works="guessing yes" ;;
+                             # Guess yes on glibc systems.
+          *-gnu* | gnu*)     gl_cv_func_mkdir_trailing_slash_works="guessing yes" ;;
+                             # Guess yes on MSVC, no on mingw.
+          windows*-msvc*)    gl_cv_func_mkdir_trailing_slash_works="guessing yes" ;;
+          mingw* | windows*) cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
 #ifdef _MSC_VER
@@ -45984,9 +49198,9 @@ else $as_nop
 fi
 rm -rf conftest*
 
-                           ;;
-                           # If we don't know, obey --enable-cross-guesses.
-          *)               gl_cv_func_mkdir_trailing_slash_works="$gl_cross_guess_normal" ;;
+                             ;;
+                             # If we don't know, obey --enable-cross-guesses.
+          *)                 gl_cv_func_mkdir_trailing_slash_works="$gl_cross_guess_normal" ;;
         esac
 
 else $as_nop
@@ -46039,16 +49253,16 @@ else $as_nop
      if test "$cross_compiling" = yes
 then :
   case "$host_os" in
-                         # Guess yes on glibc systems.
-          *-gnu* | gnu*) gl_cv_func_mkdir_trailing_dot_works="guessing yes" ;;
-                         # Guess yes on musl systems.
-          *-musl*)       gl_cv_func_mkdir_trailing_dot_works="guessing yes" ;;
-                         # Guess yes on systems that emulate the Linux system calls.
-          midipix*)      gl_cv_func_mkdir_trailing_dot_works="guessing yes" ;;
-                         # Guess no on native Windows.
-          mingw*)        gl_cv_func_mkdir_trailing_dot_works="guessing no" ;;
-                         # If we don't know, obey --enable-cross-guesses.
-          *)             gl_cv_func_mkdir_trailing_dot_works="$gl_cross_guess_normal" ;;
+                             # Guess yes on glibc systems.
+          *-gnu* | gnu*)     gl_cv_func_mkdir_trailing_dot_works="guessing yes" ;;
+                             # Guess yes on musl systems.
+          *-musl*)           gl_cv_func_mkdir_trailing_dot_works="guessing yes" ;;
+                             # Guess yes on systems that emulate the Linux system calls.
+          midipix*)          gl_cv_func_mkdir_trailing_dot_works="guessing yes" ;;
+                             # Guess no on native Windows.
+          mingw* | windows*) gl_cv_func_mkdir_trailing_dot_works="guessing no" ;;
+                             # If we don't know, obey --enable-cross-guesses.
+          *)                 gl_cv_func_mkdir_trailing_dot_works="$gl_cross_guess_normal" ;;
         esac
 
 else $as_nop
@@ -46201,7 +49415,7 @@ then :
                                  # Guess yes on musl systems.
              *-musl* | midipix*) gl_cv_func_working_mkstemp="guessing yes" ;;
                                  # Guess no on native Windows.
-             mingw*)             gl_cv_func_working_mkstemp="guessing no" ;;
+             mingw* | windows*)  gl_cv_func_working_mkstemp="guessing no" ;;
                                  # If we don't know, obey --enable-cross-guesses.
              *)                  gl_cv_func_working_mkstemp="$gl_cross_guess_normal" ;;
            esac
@@ -46442,11 +49656,14 @@ else $as_nop
      if test "$cross_compiling" = yes
 then :
   case "$host_os" in
-          linux*) # Guess it halfway works when the kernel is Linux.
+            # Guess it halfway works when the kernel is Linux.
+          linux*)
             gl_cv_func_nanosleep='guessing no (mishandles large arguments)' ;;
-          mingw*) # Guess no on native Windows.
+            # Guess no on native Windows.
+          mingw* | windows*)
             gl_cv_func_nanosleep='guessing no' ;;
-          *)      # If we don't know, obey --enable-cross-guesses.
+            # If we don't know, obey --enable-cross-guesses.
+          *)
             gl_cv_func_nanosleep="$gl_cross_guess_normal" ;;
         esac
 
@@ -46536,9 +49753,7 @@ fi
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_nanosleep" >&5
 printf "%s\n" "$gl_cv_func_nanosleep" >&6; }
    case "$gl_cv_func_nanosleep" in
-     *yes)
-       REPLACE_NANOSLEEP=0
-       ;;
+     *yes) ;;
      *)
        REPLACE_NANOSLEEP=1
        case "$gl_cv_func_nanosleep" in
@@ -46946,7 +50161,7 @@ printf "%s\n" "#define GNULIB_NONBLOCKING 1" >>confdefs.h
 
 
   case "$host_os" in
-    mingw* | pw*)
+    mingw* | windows* | pw*)
       REPLACE_OPEN=1
       ;;
     *)
@@ -47179,9 +50394,6 @@ fi
     if test $DIR_HAS_FD_MEMBER = 0; then
       REPLACE_OPENDIR=1
     fi
-            case $host_os in
-      os2*) REPLACE_OPENDIR=1 ;;
-    esac
 
 
 
@@ -48376,7 +51588,7 @@ then :
           # Guess yes on platforms where we know the result.
           *-gnu* | freebsd* | netbsd* | openbsd* | bitrig* \
           | gnu* | *-musl* | midipix* | midnightbsd* \
-          | hpux* | solaris* | cygwin* | mingw* | msys* )
+          | hpux* | solaris* | cygwin* | mingw* | windows* | msys* )
             ac_cv_func_realloc_0_nonnull="guessing yes" ;;
           # If we don't know, obey --enable-cross-guesses.
           *) ac_cv_func_realloc_0_nonnull="$gl_cross_guess_normal" ;;
@@ -48391,7 +51603,8 @@ int
 main (void)
 {
 void *p = realloc (0, 0);
-            int result = !p;
+            void * volatile vp = p;
+            int result = !vp;
             free (p);
             return result;
   ;
@@ -48644,10 +51857,10 @@ else $as_nop
   if test "$cross_compiling" = yes
 then :
   case "$host_os" in
-                   # Guess no on native Windows.
-           mingw*) gl_cv_func_re_compile_pattern_working="guessing no" ;;
-                   # Otherwise obey --enable-cross-guesses.
-           *)      gl_cv_func_re_compile_pattern_working="$gl_cross_guess_normal" ;;
+                              # Guess no on native Windows.
+           mingw* | windows*) gl_cv_func_re_compile_pattern_working="guessing no" ;;
+                              # Otherwise obey --enable-cross-guesses.
+           *)                 gl_cv_func_re_compile_pattern_working="$gl_cross_guess_normal" ;;
          esac
 
 else $as_nop
@@ -49091,16 +52304,16 @@ else $as_nop
     if test "$cross_compiling" = yes
 then :
         case "$host_os" in
-                          # Guess yes on Linux systems.
-         linux-* | linux) gl_cv_func_rename_slash_dst_works="guessing yes" ;;
-                          # Guess yes on systems that emulate the Linux system calls.
-         midipix*)        gl_cv_func_rename_slash_dst_works="guessing yes" ;;
-                          # Guess yes on glibc systems.
-         *-gnu*)          gl_cv_func_rename_slash_dst_works="guessing yes" ;;
-                          # Guess no on native Windows.
-         mingw*)          gl_cv_func_rename_slash_dst_works="guessing no" ;;
-                          # If we don't know, obey --enable-cross-guesses.
-         *)               gl_cv_func_rename_slash_dst_works="$gl_cross_guess_normal" ;;
+                            # Guess yes on Linux systems.
+         linux-* | linux)   gl_cv_func_rename_slash_dst_works="guessing yes" ;;
+                            # Guess yes on systems that emulate the Linux system calls.
+         midipix*)          gl_cv_func_rename_slash_dst_works="guessing yes" ;;
+                            # Guess yes on glibc systems.
+         *-gnu*)            gl_cv_func_rename_slash_dst_works="guessing yes" ;;
+                            # Guess no on native Windows.
+         mingw* | windows*) gl_cv_func_rename_slash_dst_works="guessing no" ;;
+                            # If we don't know, obey --enable-cross-guesses.
+         *)                 gl_cv_func_rename_slash_dst_works="$gl_cross_guess_normal" ;;
        esac
 
 else $as_nop
@@ -49169,16 +52382,16 @@ else $as_nop
     if test "$cross_compiling" = yes
 then :
         case "$host_os" in
-                          # Guess yes on Linux systems.
-         linux-* | linux) gl_cv_func_rename_slash_src_works="guessing yes" ;;
-                          # Guess yes on systems that emulate the Linux system calls.
-         midipix*)        gl_cv_func_rename_slash_src_works="guessing yes" ;;
-                          # Guess yes on glibc systems.
-         *-gnu*)          gl_cv_func_rename_slash_src_works="guessing yes" ;;
-                          # Guess yes on native Windows.
-         mingw*)          gl_cv_func_rename_slash_src_works="guessing yes" ;;
-                          # If we don't know, obey --enable-cross-guesses.
-         *)               gl_cv_func_rename_slash_src_works="$gl_cross_guess_normal" ;;
+                            # Guess yes on Linux systems.
+         linux-* | linux)   gl_cv_func_rename_slash_src_works="guessing yes" ;;
+                            # Guess yes on systems that emulate the Linux system calls.
+         midipix*)          gl_cv_func_rename_slash_src_works="guessing yes" ;;
+                            # Guess yes on glibc systems.
+         *-gnu*)            gl_cv_func_rename_slash_src_works="guessing yes" ;;
+                            # Guess yes on native Windows.
+         mingw* | windows*) gl_cv_func_rename_slash_src_works="guessing yes" ;;
+                            # If we don't know, obey --enable-cross-guesses.
+         *)                 gl_cv_func_rename_slash_src_works="$gl_cross_guess_normal" ;;
        esac
 
 else $as_nop
@@ -49301,16 +52514,16 @@ fi
          rm -rf conftest.f conftest.f1 conftest.f2
        else
                   case "$host_os" in
-                            # Guess yes on Linux systems.
-           linux-* | linux) gl_cv_func_rename_link_works="guessing yes" ;;
-                            # Guess yes on systems that emulate the Linux system calls.
-           midipix*)        gl_cv_func_rename_link_works="guessing yes" ;;
-                            # Guess yes on glibc systems.
-           *-gnu*)          gl_cv_func_rename_link_works="guessing yes" ;;
-                            # Guess yes on native Windows.
-           mingw*)          gl_cv_func_rename_link_works="guessing yes" ;;
-                            # If we don't know, obey --enable-cross-guesses.
-           *)               gl_cv_func_rename_link_works="$gl_cross_guess_normal" ;;
+                              # Guess yes on Linux systems.
+           linux-* | linux)   gl_cv_func_rename_link_works="guessing yes" ;;
+                              # Guess yes on systems that emulate the Linux system calls.
+           midipix*)          gl_cv_func_rename_link_works="guessing yes" ;;
+                              # Guess yes on glibc systems.
+           *-gnu*)            gl_cv_func_rename_link_works="guessing yes" ;;
+                              # Guess yes on native Windows.
+           mingw* | windows*) gl_cv_func_rename_link_works="guessing yes" ;;
+                              # If we don't know, obey --enable-cross-guesses.
+           *)                 gl_cv_func_rename_link_works="$gl_cross_guess_normal" ;;
          esac
        fi
      else
@@ -49342,14 +52555,14 @@ else $as_nop
     if test "$cross_compiling" = yes
 then :
         case "$host_os" in
-                          # Guess yes on Linux systems.
-         linux-* | linux) gl_cv_func_rename_dest_works="guessing yes" ;;
-                          # Guess yes on glibc systems.
-         *-gnu*)          gl_cv_func_rename_dest_works="guessing yes" ;;
-                          # Guess no on native Windows.
-         mingw*)          gl_cv_func_rename_dest_works="guessing no" ;;
-                          # If we don't know, obey --enable-cross-guesses.
-         *)               gl_cv_func_rename_dest_works="$gl_cross_guess_normal" ;;
+                            # Guess yes on Linux systems.
+         linux-* | linux)   gl_cv_func_rename_dest_works="guessing yes" ;;
+                            # Guess yes on glibc systems.
+         *-gnu*)            gl_cv_func_rename_dest_works="guessing yes" ;;
+                            # Guess no on native Windows.
+         mingw* | windows*) gl_cv_func_rename_dest_works="guessing no" ;;
+                            # If we don't know, obey --enable-cross-guesses.
+         *)                 gl_cv_func_rename_dest_works="$gl_cross_guess_normal" ;;
        esac
 
 else $as_nop
@@ -49728,16 +52941,16 @@ else $as_nop
      if test "$cross_compiling" = yes
 then :
   case "$host_os" in
-                           # Guess yes on Linux systems.
-          linux-* | linux) gl_cv_func_rmdir_works="guessing yes" ;;
-                           # Guess yes on systems that emulate the Linux system calls.
-          midipix*)        gl_cv_func_rmdir_works="guessing yes" ;;
-                           # Guess yes on glibc systems.
-          *-gnu* | gnu*)   gl_cv_func_rmdir_works="guessing yes" ;;
-                           # Guess no on native Windows.
-          mingw*)          gl_cv_func_rmdir_works="guessing no" ;;
-                           # If we don't know, obey --enable-cross-guesses.
-          *)               gl_cv_func_rmdir_works="$gl_cross_guess_normal" ;;
+                             # Guess yes on Linux systems.
+          linux-* | linux)   gl_cv_func_rmdir_works="guessing yes" ;;
+                             # Guess yes on systems that emulate the Linux system calls.
+          midipix*)          gl_cv_func_rmdir_works="guessing yes" ;;
+                             # Guess yes on glibc systems.
+          *-gnu* | gnu*)     gl_cv_func_rmdir_works="guessing yes" ;;
+                             # Guess no on native Windows.
+          mingw* | windows*) gl_cv_func_rmdir_works="guessing no" ;;
+                             # If we don't know, obey --enable-cross-guesses.
+          *)                 gl_cv_func_rmdir_works="$gl_cross_guess_normal" ;;
         esac
 
 else $as_nop
@@ -49965,7 +53178,7 @@ printf "%s\n" "$gl_cv_func_select_detects_ebadf" >&6; }
     SELECT_LIB="$LIBSOCKET"
   if test $REPLACE_SELECT = 1; then
     case "$host_os" in
-      mingw*)
+      mingw* | windows*)
                                 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -50172,7 +53385,7 @@ rm -rf conftest*
 
         ;;
        # Guess yes on glibc, HP-UX, IRIX, Solaris, native Windows.
-       *-gnu* | gnu* | hpux* | irix* | solaris* | mingw*)
+       *-gnu* | gnu* | hpux* | irix* | solaris* | mingw* | windows*)
          gl_cv_func_setlocale_null_all_mtsafe=yes ;;
        # If we don't know, obey --enable-cross-guesses.
        *)
@@ -50183,7 +53396,7 @@ fi
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_setlocale_null_all_mtsafe" >&5
 printf "%s\n" "$gl_cv_func_setlocale_null_all_mtsafe" >&6; }
     case "$host_os" in
-    mingw*) ;;
+    mingw* | windows*) ;;
     *)
       if test $gl_pthread_api = no && test $ac_cv_header_threads_h = no; then
         gl_cv_func_setlocale_null_all_mtsafe="trivially yes"
@@ -50209,7 +53422,7 @@ else $as_nop
        openbsd* | aix*)
          gl_cv_func_setlocale_null_one_mtsafe=no ;;
        # Guess yes on glibc, musl libc, macOS, FreeBSD, NetBSD, HP-UX, IRIX, Solaris, Haiku, Cygwin, native Windows.
-       *-gnu* | gnu* | *-musl* | midipix* | darwin* | freebsd* | midnightbsd* | netbsd* | hpux* | irix* | solaris* | haiku* | cygwin* | mingw*)
+       *-gnu* | gnu* | *-musl* | midipix* | darwin* | freebsd* | midnightbsd* | netbsd* | hpux* | irix* | solaris* | haiku* | cygwin* | mingw* | windows*)
          gl_cv_func_setlocale_null_one_mtsafe=yes ;;
        # If we don't know, obey --enable-cross-guesses.
        *)
@@ -50220,7 +53433,7 @@ fi
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_setlocale_null_one_mtsafe" >&5
 printf "%s\n" "$gl_cv_func_setlocale_null_one_mtsafe" >&6; }
     case "$host_os" in
-    mingw*) ;;
+    mingw* | windows*) ;;
     *)
       if test $gl_pthread_api = no && test $ac_cv_header_threads_h = no; then
         gl_cv_func_setlocale_null_one_mtsafe="trivially yes"
@@ -50237,7 +53450,9 @@ printf "%s\n" "#define SETLOCALE_NULL_ONE_MTSAFE $SETLOCALE_NULL_ONE_MTSAFE" >>c
 
     if test $SETLOCALE_NULL_ALL_MTSAFE = 0 || test $SETLOCALE_NULL_ONE_MTSAFE = 0; then
     case "$host_os" in
-      mingw*) SETLOCALE_NULL_LIB= ;;
+      mingw* | windows*)
+        SETLOCALE_NULL_LIB=
+        ;;
       *)
 
 
@@ -50248,7 +53463,7 @@ then :
   printf %s "(cached) " >&6
 else $as_nop
   case "$host_os" in
-       cygwin* | mingw*)
+       cygwin* | mingw* | windows*)
                                              gl_cv_have_weak="guessing no"
          ;;
        *)
@@ -50786,16 +54001,16 @@ else $as_nop
   if test "$cross_compiling" = yes
 then :
   case "$host_os" in
-                        # Guess yes on glibc systems.
-         *-gnu* | gnu*) gl_cv_func_sleep_works="guessing yes" ;;
-                        # Guess yes on musl systems.
-         *-musl*)       gl_cv_func_sleep_works="guessing yes" ;;
-                        # Guess yes on systems that emulate the Linux system calls.
-         midipix*)      gl_cv_func_sleep_works="guessing yes" ;;
-                        # Guess no on native Windows.
-         mingw*)        gl_cv_func_sleep_works="guessing no" ;;
-                        # If we don't know, obey --enable-cross-guesses.
-         *)             gl_cv_func_sleep_works="$gl_cross_guess_normal" ;;
+                            # Guess yes on glibc systems.
+         *-gnu* | gnu*)     gl_cv_func_sleep_works="guessing yes" ;;
+                            # Guess yes on musl systems.
+         *-musl*)           gl_cv_func_sleep_works="guessing yes" ;;
+                            # Guess yes on systems that emulate the Linux system calls.
+         midipix*)          gl_cv_func_sleep_works="guessing yes" ;;
+                            # Guess no on native Windows.
+         mingw* | windows*) gl_cv_func_sleep_works="guessing no" ;;
+                            # If we don't know, obey --enable-cross-guesses.
+         *)                 gl_cv_func_sleep_works="$gl_cross_guess_normal" ;;
        esac
 
 else $as_nop
@@ -51026,7 +54241,7 @@ printf "%s\n" "#define ssize_t $gl_def_ssize_t" >>confdefs.h
 
 
   case "$host_os" in
-    mingw*)
+    mingw* | windows*)
                   REPLACE_STAT=1
       ;;
     *)
@@ -51098,7 +54313,7 @@ printf "%s\n" "#define REPLACE_FUNC_STAT_FILE 1" >>confdefs.h
 ;;
       esac
       case $host_os in
-                solaris*)
+                darwin* | solaris*)
           REPLACE_FSTAT=1 ;;
       esac
       ;;
@@ -51121,7 +54336,7 @@ fi
   if test -z "$GL_COND_OBJ_STAT_TRUE"; then :
 
     case "$host_os" in
-      mingw*)
+      mingw* | windows*)
 
 
 
@@ -51377,7 +54592,7 @@ _ACEOF
   esac
 
   case "$host_os" in
-    mingw*)
+    mingw* | windows*)
                                           gl_dirsep_regex='[/\\]'
       ;;
     *)
@@ -53331,7 +56546,7 @@ _ACEOF
   esac
 
   case "$host_os" in
-    mingw*)
+    mingw* | windows*)
                                           gl_dirsep_regex='[/\\]'
       ;;
     *)
@@ -53488,6 +56703,824 @@ printf "%s\n" "#define GNULIB_TEMPNAME 1" >>confdefs.h
 
 
 
+      if  { test "$HAVE_LIBUNISTRING" != yes \
+    || {
+
+
+
+            test $LIBUNISTRING_VERSION_MAJOR -lt 1 \
+            || { test $LIBUNISTRING_VERSION_MAJOR -eq 1 \
+                 && { test $LIBUNISTRING_VERSION_MINOR -lt 2 \
+                      || { test $LIBUNISTRING_VERSION_MINOR -eq 2 \
+                           && test $LIBUNISTRING_VERSION_SUBMINOR -lt 0
+                         }
+                    }
+               }
+
+
+
+
+       }
+  }; then
+            if test -z "$LIBUNISTRING_UNICASE_H"; then
+      LIBUNISTRING_UNICASE_H="${gl_source_base_prefix}unicase.h"
+    fi
+  else
+    LIBUNISTRING_UNICASE_H=
+  fi
+
+
+
+
+
+
+
+
+
+
+
+
+     if  { test "$HAVE_LIBUNISTRING" != yes \
+    || {
+
+
+
+            test $LIBUNISTRING_VERSION_MAJOR -lt 0 \
+            || { test $LIBUNISTRING_VERSION_MAJOR -eq 0 \
+                 && { test $LIBUNISTRING_VERSION_MINOR -lt 9 \
+                      || { test $LIBUNISTRING_VERSION_MINOR -eq 9 \
+                           && test $LIBUNISTRING_VERSION_SUBMINOR -lt 11
+                         }
+                    }
+               }
+
+
+
+
+       }
+  }; then
+  LIBUNISTRING_COMPILE_UNICASE_TOLOWER_TRUE=
+  LIBUNISTRING_COMPILE_UNICASE_TOLOWER_FALSE='#'
+else
+  LIBUNISTRING_COMPILE_UNICASE_TOLOWER_TRUE='#'
+  LIBUNISTRING_COMPILE_UNICASE_TOLOWER_FALSE=
+fi
+:
+    if test -z "${LIBUNISTRING_COMPILE_UNICASE_TOLOWER_TRUE}" && test -z "${LIBUNISTRING_COMPILE_UNICASE_TOLOWER_FALSE}"; then
+    LIBUNISTRING_COMPILE_UNICASE_TOLOWER_TRUE='#'
+    LIBUNISTRING_COMPILE_UNICASE_TOLOWER_FALSE='#'
+  fi
+
+
+
+
+      if  { test "$HAVE_LIBUNISTRING" != yes \
+    || {
+
+
+
+            test $LIBUNISTRING_VERSION_MAJOR -lt 1 \
+            || { test $LIBUNISTRING_VERSION_MAJOR -eq 1 \
+                 && { test $LIBUNISTRING_VERSION_MINOR -lt 2 \
+                      || { test $LIBUNISTRING_VERSION_MINOR -eq 2 \
+                           && test $LIBUNISTRING_VERSION_SUBMINOR -lt 0
+                         }
+                    }
+               }
+
+
+
+
+       }
+  }; then
+            if test -z "$LIBUNISTRING_UNICTYPE_H"; then
+      LIBUNISTRING_UNICTYPE_H="${gl_source_base_prefix}unictype.h"
+    fi
+  else
+    LIBUNISTRING_UNICTYPE_H=
+  fi
+
+
+
+
+
+
+
+
+
+
+
+
+
+     if  { test "$HAVE_LIBUNISTRING" != yes \
+    || {
+
+
+
+            test $LIBUNISTRING_VERSION_MAJOR -lt 1 \
+            || { test $LIBUNISTRING_VERSION_MAJOR -eq 1 \
+                 && { test $LIBUNISTRING_VERSION_MINOR -lt 1 \
+                      || { test $LIBUNISTRING_VERSION_MINOR -eq 1 \
+                           && test $LIBUNISTRING_VERSION_SUBMINOR -lt 0
+                         }
+                    }
+               }
+
+
+
+
+       }
+  }; then
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_ALNUM_TRUE=
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_ALNUM_FALSE='#'
+else
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_ALNUM_TRUE='#'
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_ALNUM_FALSE=
+fi
+:
+    if test -z "${LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_ALNUM_TRUE}" && test -z "${LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_ALNUM_FALSE}"; then
+    LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_ALNUM_TRUE='#'
+    LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_ALNUM_FALSE='#'
+  fi
+
+
+
+
+
+
+     if  { test "$HAVE_LIBUNISTRING" != yes \
+    || {
+
+
+
+            test $LIBUNISTRING_VERSION_MAJOR -lt 1 \
+            || { test $LIBUNISTRING_VERSION_MAJOR -eq 1 \
+                 && { test $LIBUNISTRING_VERSION_MINOR -lt 1 \
+                      || { test $LIBUNISTRING_VERSION_MINOR -eq 1 \
+                           && test $LIBUNISTRING_VERSION_SUBMINOR -lt 0
+                         }
+                    }
+               }
+
+
+
+
+       }
+  }; then
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_ALPHA_TRUE=
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_ALPHA_FALSE='#'
+else
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_ALPHA_TRUE='#'
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_ALPHA_FALSE=
+fi
+:
+    if test -z "${LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_ALPHA_TRUE}" && test -z "${LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_ALPHA_FALSE}"; then
+    LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_ALPHA_TRUE='#'
+    LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_ALPHA_FALSE='#'
+  fi
+
+
+
+
+
+
+     if  { test "$HAVE_LIBUNISTRING" != yes \
+    || {
+
+
+
+            test $LIBUNISTRING_VERSION_MAJOR -lt 0 \
+            || { test $LIBUNISTRING_VERSION_MAJOR -eq 0 \
+                 && { test $LIBUNISTRING_VERSION_MINOR -lt 9 \
+                      || { test $LIBUNISTRING_VERSION_MINOR -eq 9 \
+                           && test $LIBUNISTRING_VERSION_SUBMINOR -lt 8
+                         }
+                    }
+               }
+
+
+
+
+       }
+  }; then
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_BLANK_TRUE=
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_BLANK_FALSE='#'
+else
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_BLANK_TRUE='#'
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_BLANK_FALSE=
+fi
+:
+    if test -z "${LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_BLANK_TRUE}" && test -z "${LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_BLANK_FALSE}"; then
+    LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_BLANK_TRUE='#'
+    LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_BLANK_FALSE='#'
+  fi
+
+
+
+
+
+
+     if  { test "$HAVE_LIBUNISTRING" != yes \
+    || {
+
+
+
+            test $LIBUNISTRING_VERSION_MAJOR -lt 0 \
+            || { test $LIBUNISTRING_VERSION_MAJOR -eq 0 \
+                 && { test $LIBUNISTRING_VERSION_MINOR -lt 9 \
+                      || { test $LIBUNISTRING_VERSION_MINOR -eq 9 \
+                           && test $LIBUNISTRING_VERSION_SUBMINOR -lt 8
+                         }
+                    }
+               }
+
+
+
+
+       }
+  }; then
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_CNTRL_TRUE=
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_CNTRL_FALSE='#'
+else
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_CNTRL_TRUE='#'
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_CNTRL_FALSE=
+fi
+:
+    if test -z "${LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_CNTRL_TRUE}" && test -z "${LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_CNTRL_FALSE}"; then
+    LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_CNTRL_TRUE='#'
+    LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_CNTRL_FALSE='#'
+  fi
+
+
+
+
+
+
+     if  { test "$HAVE_LIBUNISTRING" != yes \
+    || {
+
+
+
+            test $LIBUNISTRING_VERSION_MAJOR -lt 0 \
+            || { test $LIBUNISTRING_VERSION_MAJOR -eq 0 \
+                 && { test $LIBUNISTRING_VERSION_MINOR -lt 9 \
+                      || { test $LIBUNISTRING_VERSION_MINOR -eq 9 \
+                           && test $LIBUNISTRING_VERSION_SUBMINOR -lt 8
+                         }
+                    }
+               }
+
+
+
+
+       }
+  }; then
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_DIGIT_TRUE=
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_DIGIT_FALSE='#'
+else
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_DIGIT_TRUE='#'
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_DIGIT_FALSE=
+fi
+:
+    if test -z "${LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_DIGIT_TRUE}" && test -z "${LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_DIGIT_FALSE}"; then
+    LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_DIGIT_TRUE='#'
+    LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_DIGIT_FALSE='#'
+  fi
+
+
+
+
+
+
+     if  { test "$HAVE_LIBUNISTRING" != yes \
+    || {
+
+
+
+            test $LIBUNISTRING_VERSION_MAJOR -lt 1 \
+            || { test $LIBUNISTRING_VERSION_MAJOR -eq 1 \
+                 && { test $LIBUNISTRING_VERSION_MINOR -lt 1 \
+                      || { test $LIBUNISTRING_VERSION_MINOR -eq 1 \
+                           && test $LIBUNISTRING_VERSION_SUBMINOR -lt 0
+                         }
+                    }
+               }
+
+
+
+
+       }
+  }; then
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_GRAPH_TRUE=
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_GRAPH_FALSE='#'
+else
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_GRAPH_TRUE='#'
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_GRAPH_FALSE=
+fi
+:
+    if test -z "${LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_GRAPH_TRUE}" && test -z "${LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_GRAPH_FALSE}"; then
+    LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_GRAPH_TRUE='#'
+    LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_GRAPH_FALSE='#'
+  fi
+
+
+
+
+
+
+     if  { test "$HAVE_LIBUNISTRING" != yes \
+    || {
+
+
+
+            test $LIBUNISTRING_VERSION_MAJOR -lt 0 \
+            || { test $LIBUNISTRING_VERSION_MAJOR -eq 0 \
+                 && { test $LIBUNISTRING_VERSION_MINOR -lt 9 \
+                      || { test $LIBUNISTRING_VERSION_MINOR -eq 9 \
+                           && test $LIBUNISTRING_VERSION_SUBMINOR -lt 11
+                         }
+                    }
+               }
+
+
+
+
+       }
+  }; then
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_LOWER_TRUE=
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_LOWER_FALSE='#'
+else
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_LOWER_TRUE='#'
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_LOWER_FALSE=
+fi
+:
+    if test -z "${LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_LOWER_TRUE}" && test -z "${LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_LOWER_FALSE}"; then
+    LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_LOWER_TRUE='#'
+    LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_LOWER_FALSE='#'
+  fi
+
+
+
+
+
+
+     if  { test "$HAVE_LIBUNISTRING" != yes \
+    || {
+
+
+
+            test $LIBUNISTRING_VERSION_MAJOR -lt 1 \
+            || { test $LIBUNISTRING_VERSION_MAJOR -eq 1 \
+                 && { test $LIBUNISTRING_VERSION_MINOR -lt 1 \
+                      || { test $LIBUNISTRING_VERSION_MINOR -eq 1 \
+                           && test $LIBUNISTRING_VERSION_SUBMINOR -lt 0
+                         }
+                    }
+               }
+
+
+
+
+       }
+  }; then
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_PRINT_TRUE=
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_PRINT_FALSE='#'
+else
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_PRINT_TRUE='#'
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_PRINT_FALSE=
+fi
+:
+    if test -z "${LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_PRINT_TRUE}" && test -z "${LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_PRINT_FALSE}"; then
+    LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_PRINT_TRUE='#'
+    LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_PRINT_FALSE='#'
+  fi
+
+
+
+
+
+
+     if  { test "$HAVE_LIBUNISTRING" != yes \
+    || {
+
+
+
+            test $LIBUNISTRING_VERSION_MAJOR -lt 1 \
+            || { test $LIBUNISTRING_VERSION_MAJOR -eq 1 \
+                 && { test $LIBUNISTRING_VERSION_MINOR -lt 1 \
+                      || { test $LIBUNISTRING_VERSION_MINOR -eq 1 \
+                           && test $LIBUNISTRING_VERSION_SUBMINOR -lt 0
+                         }
+                    }
+               }
+
+
+
+
+       }
+  }; then
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_PUNCT_TRUE=
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_PUNCT_FALSE='#'
+else
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_PUNCT_TRUE='#'
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_PUNCT_FALSE=
+fi
+:
+    if test -z "${LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_PUNCT_TRUE}" && test -z "${LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_PUNCT_FALSE}"; then
+    LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_PUNCT_TRUE='#'
+    LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_PUNCT_FALSE='#'
+  fi
+
+
+
+
+
+
+     if  { test "$HAVE_LIBUNISTRING" != yes \
+    || {
+
+
+
+            test $LIBUNISTRING_VERSION_MAJOR -lt 0 \
+            || { test $LIBUNISTRING_VERSION_MAJOR -eq 0 \
+                 && { test $LIBUNISTRING_VERSION_MINOR -lt 9 \
+                      || { test $LIBUNISTRING_VERSION_MINOR -eq 9 \
+                           && test $LIBUNISTRING_VERSION_SUBMINOR -lt 8
+                         }
+                    }
+               }
+
+
+
+
+       }
+  }; then
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_SPACE_TRUE=
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_SPACE_FALSE='#'
+else
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_SPACE_TRUE='#'
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_SPACE_FALSE=
+fi
+:
+    if test -z "${LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_SPACE_TRUE}" && test -z "${LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_SPACE_FALSE}"; then
+    LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_SPACE_TRUE='#'
+    LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_SPACE_FALSE='#'
+  fi
+
+
+
+
+
+
+     if  { test "$HAVE_LIBUNISTRING" != yes \
+    || {
+
+
+
+            test $LIBUNISTRING_VERSION_MAJOR -lt 0 \
+            || { test $LIBUNISTRING_VERSION_MAJOR -eq 0 \
+                 && { test $LIBUNISTRING_VERSION_MINOR -lt 9 \
+                      || { test $LIBUNISTRING_VERSION_MINOR -eq 9 \
+                           && test $LIBUNISTRING_VERSION_SUBMINOR -lt 11
+                         }
+                    }
+               }
+
+
+
+
+       }
+  }; then
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_UPPER_TRUE=
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_UPPER_FALSE='#'
+else
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_UPPER_TRUE='#'
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_UPPER_FALSE=
+fi
+:
+    if test -z "${LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_UPPER_TRUE}" && test -z "${LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_UPPER_FALSE}"; then
+    LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_UPPER_TRUE='#'
+    LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_UPPER_FALSE='#'
+  fi
+
+
+
+
+
+
+     if  { test "$HAVE_LIBUNISTRING" != yes \
+    || {
+
+
+
+            test $LIBUNISTRING_VERSION_MAJOR -lt 0 \
+            || { test $LIBUNISTRING_VERSION_MAJOR -eq 0 \
+                 && { test $LIBUNISTRING_VERSION_MINOR -lt 9 \
+                      || { test $LIBUNISTRING_VERSION_MINOR -eq 9 \
+                           && test $LIBUNISTRING_VERSION_SUBMINOR -lt 8
+                         }
+                    }
+               }
+
+
+
+
+       }
+  }; then
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_XDIGIT_TRUE=
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_XDIGIT_FALSE='#'
+else
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_XDIGIT_TRUE='#'
+  LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_XDIGIT_FALSE=
+fi
+:
+    if test -z "${LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_XDIGIT_TRUE}" && test -z "${LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_XDIGIT_FALSE}"; then
+    LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_XDIGIT_TRUE='#'
+    LIBUNISTRING_COMPILE_UNICTYPE_CTYPE_XDIGIT_FALSE='#'
+  fi
+
+
+
+
+      if  { test "$HAVE_LIBUNISTRING" != yes \
+    || {
+
+
+
+            test $LIBUNISTRING_VERSION_MAJOR -lt 1 \
+            || { test $LIBUNISTRING_VERSION_MAJOR -eq 1 \
+                 && { test $LIBUNISTRING_VERSION_MINOR -lt 2 \
+                      || { test $LIBUNISTRING_VERSION_MINOR -eq 2 \
+                           && test $LIBUNISTRING_VERSION_SUBMINOR -lt 0
+                         }
+                    }
+               }
+
+
+
+
+       }
+  }; then
+            if test -z "$LIBUNISTRING_UNINORM_H"; then
+      LIBUNISTRING_UNINORM_H="${gl_source_base_prefix}uninorm.h"
+    fi
+  else
+    LIBUNISTRING_UNINORM_H=
+  fi
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+      if  { test "$HAVE_LIBUNISTRING" != yes \
+    || {
+
+
+
+            test $LIBUNISTRING_VERSION_MAJOR -lt 1 \
+            || { test $LIBUNISTRING_VERSION_MAJOR -eq 1 \
+                 && { test $LIBUNISTRING_VERSION_MINOR -lt 2 \
+                      || { test $LIBUNISTRING_VERSION_MINOR -eq 2 \
+                           && test $LIBUNISTRING_VERSION_SUBMINOR -lt 0
+                         }
+                    }
+               }
+
+
+
+
+       }
+  }; then
+            if test -z "$LIBUNISTRING_UNISTR_H"; then
+      LIBUNISTRING_UNISTR_H="${gl_source_base_prefix}unistr.h"
+    fi
+  else
+    LIBUNISTRING_UNISTR_H=
+  fi
+
+
+
+
+
+
+     if  { test "$HAVE_LIBUNISTRING" != yes \
+    || {
+
+
+
+            test $LIBUNISTRING_VERSION_MAJOR -lt 0 \
+            || { test $LIBUNISTRING_VERSION_MAJOR -eq 0 \
+                 && { test $LIBUNISTRING_VERSION_MINOR -lt 9 \
+                      || { test $LIBUNISTRING_VERSION_MINOR -eq 9 \
+                           && test $LIBUNISTRING_VERSION_SUBMINOR -lt 0
+                         }
+                    }
+               }
+
+
+
+
+       }
+  }; then
+  LIBUNISTRING_COMPILE_UNISTR_U32_CHR_TRUE=
+  LIBUNISTRING_COMPILE_UNISTR_U32_CHR_FALSE='#'
+else
+  LIBUNISTRING_COMPILE_UNISTR_U32_CHR_TRUE='#'
+  LIBUNISTRING_COMPILE_UNISTR_U32_CHR_FALSE=
+fi
+:
+    if test -z "${LIBUNISTRING_COMPILE_UNISTR_U32_CHR_TRUE}" && test -z "${LIBUNISTRING_COMPILE_UNISTR_U32_CHR_FALSE}"; then
+    LIBUNISTRING_COMPILE_UNISTR_U32_CHR_TRUE='#'
+    LIBUNISTRING_COMPILE_UNISTR_U32_CHR_FALSE='#'
+  fi
+
+
+
+
+
+     if  { test "$HAVE_LIBUNISTRING" != yes \
+    || {
+
+
+
+            test $LIBUNISTRING_VERSION_MAJOR -lt 0 \
+            || { test $LIBUNISTRING_VERSION_MAJOR -eq 0 \
+                 && { test $LIBUNISTRING_VERSION_MINOR -lt 9 \
+                      || { test $LIBUNISTRING_VERSION_MINOR -eq 9 \
+                           && test $LIBUNISTRING_VERSION_SUBMINOR -lt 0
+                         }
+                    }
+               }
+
+
+
+
+       }
+  }; then
+  LIBUNISTRING_COMPILE_UNISTR_U32_CPY_TRUE=
+  LIBUNISTRING_COMPILE_UNISTR_U32_CPY_FALSE='#'
+else
+  LIBUNISTRING_COMPILE_UNISTR_U32_CPY_TRUE='#'
+  LIBUNISTRING_COMPILE_UNISTR_U32_CPY_FALSE=
+fi
+:
+    if test -z "${LIBUNISTRING_COMPILE_UNISTR_U32_CPY_TRUE}" && test -z "${LIBUNISTRING_COMPILE_UNISTR_U32_CPY_FALSE}"; then
+    LIBUNISTRING_COMPILE_UNISTR_U32_CPY_TRUE='#'
+    LIBUNISTRING_COMPILE_UNISTR_U32_CPY_FALSE='#'
+  fi
+
+
+
+
+
+     if  { test "$HAVE_LIBUNISTRING" != yes \
+    || {
+
+
+
+            test $LIBUNISTRING_VERSION_MAJOR -lt 1 \
+            || { test $LIBUNISTRING_VERSION_MAJOR -eq 1 \
+                 && { test $LIBUNISTRING_VERSION_MINOR -lt 2 \
+                      || { test $LIBUNISTRING_VERSION_MINOR -eq 2 \
+                           && test $LIBUNISTRING_VERSION_SUBMINOR -lt 0
+                         }
+                    }
+               }
+
+
+
+
+       }
+  }; then
+  LIBUNISTRING_COMPILE_UNISTR_U32_PCPY_TRUE=
+  LIBUNISTRING_COMPILE_UNISTR_U32_PCPY_FALSE='#'
+else
+  LIBUNISTRING_COMPILE_UNISTR_U32_PCPY_TRUE='#'
+  LIBUNISTRING_COMPILE_UNISTR_U32_PCPY_FALSE=
+fi
+:
+    if test -z "${LIBUNISTRING_COMPILE_UNISTR_U32_PCPY_TRUE}" && test -z "${LIBUNISTRING_COMPILE_UNISTR_U32_PCPY_FALSE}"; then
+    LIBUNISTRING_COMPILE_UNISTR_U32_PCPY_TRUE='#'
+    LIBUNISTRING_COMPILE_UNISTR_U32_PCPY_FALSE='#'
+  fi
+
+
+
+
+
+     if  { test "$HAVE_LIBUNISTRING" != yes \
+    || {
+
+
+
+            test $LIBUNISTRING_VERSION_MAJOR -lt 0 \
+            || { test $LIBUNISTRING_VERSION_MAJOR -eq 0 \
+                 && { test $LIBUNISTRING_VERSION_MINOR -lt 9 \
+                      || { test $LIBUNISTRING_VERSION_MINOR -eq 9 \
+                           && test $LIBUNISTRING_VERSION_SUBMINOR -lt 0
+                         }
+                    }
+               }
+
+
+
+
+       }
+  }; then
+  LIBUNISTRING_COMPILE_UNISTR_U32_STRCAT_TRUE=
+  LIBUNISTRING_COMPILE_UNISTR_U32_STRCAT_FALSE='#'
+else
+  LIBUNISTRING_COMPILE_UNISTR_U32_STRCAT_TRUE='#'
+  LIBUNISTRING_COMPILE_UNISTR_U32_STRCAT_FALSE=
+fi
+:
+    if test -z "${LIBUNISTRING_COMPILE_UNISTR_U32_STRCAT_TRUE}" && test -z "${LIBUNISTRING_COMPILE_UNISTR_U32_STRCAT_FALSE}"; then
+    LIBUNISTRING_COMPILE_UNISTR_U32_STRCAT_TRUE='#'
+    LIBUNISTRING_COMPILE_UNISTR_U32_STRCAT_FALSE='#'
+  fi
+
+
+
+
+
+     if  { test "$HAVE_LIBUNISTRING" != yes \
+    || {
+
+
+
+            test $LIBUNISTRING_VERSION_MAJOR -lt 0 \
+            || { test $LIBUNISTRING_VERSION_MAJOR -eq 0 \
+                 && { test $LIBUNISTRING_VERSION_MINOR -lt 9 \
+                      || { test $LIBUNISTRING_VERSION_MINOR -eq 9 \
+                           && test $LIBUNISTRING_VERSION_SUBMINOR -lt 0
+                         }
+                    }
+               }
+
+
+
+
+       }
+  }; then
+  LIBUNISTRING_COMPILE_UNISTR_U32_STRLEN_TRUE=
+  LIBUNISTRING_COMPILE_UNISTR_U32_STRLEN_FALSE='#'
+else
+  LIBUNISTRING_COMPILE_UNISTR_U32_STRLEN_TRUE='#'
+  LIBUNISTRING_COMPILE_UNISTR_U32_STRLEN_FALSE=
+fi
+:
+    if test -z "${LIBUNISTRING_COMPILE_UNISTR_U32_STRLEN_TRUE}" && test -z "${LIBUNISTRING_COMPILE_UNISTR_U32_STRLEN_FALSE}"; then
+    LIBUNISTRING_COMPILE_UNISTR_U32_STRLEN_TRUE='#'
+    LIBUNISTRING_COMPILE_UNISTR_U32_STRLEN_FALSE='#'
+  fi
+
+
+
+
+      if  { test "$HAVE_LIBUNISTRING" != yes \
+    || {
+
+
+
+            test $LIBUNISTRING_VERSION_MAJOR -lt 0 \
+            || { test $LIBUNISTRING_VERSION_MAJOR -eq 0 \
+                 && { test $LIBUNISTRING_VERSION_MINOR -lt 9 \
+                      || { test $LIBUNISTRING_VERSION_MINOR -eq 9 \
+                           && test $LIBUNISTRING_VERSION_SUBMINOR -lt 11
+                         }
+                    }
+               }
+
+
+
+
+       }
+  }; then
+            if test -z "$LIBUNISTRING_UNITYPES_H"; then
+      LIBUNISTRING_UNITYPES_H="${gl_source_base_prefix}unitypes.h"
+    fi
+  else
+    LIBUNISTRING_UNITYPES_H=
+  fi
+
+
+
 
 
 
@@ -53508,16 +57541,16 @@ else $as_nop
      if test "$cross_compiling" = yes
 then :
   case "$host_os" in
-                          # Guess yes on Linux systems.
-         linux-* | linux) gl_cv_func_unlink_honors_slashes="guessing yes" ;;
-                          # Guess yes on systems that emulate the Linux system calls.
-         midipix*)        gl_cv_func_unlink_honors_slashes="guessing yes" ;;
-                          # Guess yes on glibc systems.
-         *-gnu*)          gl_cv_func_unlink_honors_slashes="guessing yes" ;;
-                          # Guess no on native Windows.
-         mingw*)          gl_cv_func_unlink_honors_slashes="guessing no" ;;
-                          # If we don't know, obey --enable-cross-guesses.
-         *)               gl_cv_func_unlink_honors_slashes="$gl_cross_guess_normal" ;;
+                            # Guess yes on Linux systems.
+         linux-* | linux)   gl_cv_func_unlink_honors_slashes="guessing yes" ;;
+                            # Guess yes on systems that emulate the Linux system calls.
+         midipix*)          gl_cv_func_unlink_honors_slashes="guessing yes" ;;
+                            # Guess yes on glibc systems.
+         *-gnu*)            gl_cv_func_unlink_honors_slashes="guessing yes" ;;
+                            # Guess no on native Windows.
+         mingw* | windows*) gl_cv_func_unlink_honors_slashes="guessing no" ;;
+                            # If we don't know, obey --enable-cross-guesses.
+         *)                 gl_cv_func_unlink_honors_slashes="$gl_cross_guess_normal" ;;
        esac
 
 else $as_nop
@@ -53759,7 +57792,7 @@ printf "%s\n" "#define GNULIB_TEST_UNLINKAT 1" >>confdefs.h
 
 
   case "$host_os" in
-    mingw*)
+    mingw* | windows*)
                                     REPLACE_UTIME=1
       ;;
     *)
@@ -54566,11 +58599,11 @@ else $as_nop
       if test "$cross_compiling" = yes
 then :
   case "$host_os" in
-                            # Guess yes on Android.
-           linux*-android*) gl_cv_func_snprintf_size1="guessing yes" ;;
-                            # Guess yes on native Windows.
-           mingw*)          gl_cv_func_snprintf_size1="guessing yes" ;;
-           *)               gl_cv_func_snprintf_size1="guessing yes" ;;
+                              # Guess yes on Android.
+           linux*-android*)   gl_cv_func_snprintf_size1="guessing yes" ;;
+                              # Guess yes on native Windows.
+           mingw* | windows*) gl_cv_func_snprintf_size1="guessing yes" ;;
+           *)                 gl_cv_func_snprintf_size1="guessing yes" ;;
          esac
 
 else $as_nop
@@ -54786,9 +58819,11 @@ else $as_nop
 
                               case "$host_os" in
             # Guess no on AIX 4, OSF/1, Solaris, native Windows.
-            aix4* | osf* | solaris* | mingw*) gl_cv_func_wcrtomb_retval="guessing no" ;;
+            aix4* | osf* | solaris* | mingw* | windows*)
+              gl_cv_func_wcrtomb_retval="guessing no" ;;
             # Guess yes otherwise.
-            *)                                gl_cv_func_wcrtomb_retval="guessing yes" ;;
+            *)
+              gl_cv_func_wcrtomb_retval="guessing yes" ;;
           esac
           if test $LOCALE_FR != none || test $LOCALE_FR_UTF8 != none || test $LOCALE_JA != none || test $LOCALE_ZH_CN != none; then
             if test "$cross_compiling" = yes
@@ -54910,6 +58945,40 @@ printf "%s\n" "#define GNULIB_TEST_WCRTOMB 1" >>confdefs.h
 
 
 
+     if test $HAVE_WCTYPE = 0 || test $REPLACE_WCTYPE = 1; then
+  GL_COND_OBJ_WCTYPE_TRUE=
+  GL_COND_OBJ_WCTYPE_FALSE='#'
+else
+  GL_COND_OBJ_WCTYPE_TRUE='#'
+  GL_COND_OBJ_WCTYPE_FALSE=
+fi
+:
+    if test -z "${GL_COND_OBJ_WCTYPE_TRUE}" && test -z "${GL_COND_OBJ_WCTYPE_FALSE}"; then
+    GL_COND_OBJ_WCTYPE_TRUE='#'
+    GL_COND_OBJ_WCTYPE_FALSE='#'
+  fi
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_WCTYPE=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_WCTYPE 1" >>confdefs.h
+
+
+
+
+
 
 
 
@@ -54917,7 +58986,7 @@ printf "%s\n" "#define GNULIB_TEST_WCRTOMB 1" >>confdefs.h
 
 
 
-     if case "$host_os" in mingw*) true;; *) false;; esac; then
+     if case "$host_os" in mingw* | windows*) true;; *) false;; esac; then
   GL_COND_OBJ_WINDOWS_MUTEX_TRUE=
   GL_COND_OBJ_WINDOWS_MUTEX_FALSE='#'
 else
@@ -54932,7 +59001,7 @@ fi
 
 
 
-     if case "$host_os" in mingw*) true;; *) false;; esac; then
+     if case "$host_os" in mingw* | windows*) true;; *) false;; esac; then
   GL_COND_OBJ_WINDOWS_ONCE_TRUE=
   GL_COND_OBJ_WINDOWS_ONCE_FALSE='#'
 else
@@ -54947,7 +59016,7 @@ fi
 
 
 
-     if case "$host_os" in mingw*) true;; *) false;; esac; then
+     if case "$host_os" in mingw* | windows*) true;; *) false;; esac; then
   GL_COND_OBJ_WINDOWS_RECMUTEX_TRUE=
   GL_COND_OBJ_WINDOWS_RECMUTEX_FALSE='#'
 else
@@ -54962,7 +59031,7 @@ fi
 
 
 
-     if case "$host_os" in mingw*) true;; *) false;; esac; then
+     if case "$host_os" in mingw* | windows*) true;; *) false;; esac; then
   GL_COND_OBJ_WINDOWS_RWLOCK_TRUE=
   GL_COND_OBJ_WINDOWS_RWLOCK_FALSE='#'
 else
@@ -55642,7 +59711,7 @@ else $as_nop
     if test "$GCC" = yes; then
       # Check if gcc -print-prog-name=ld gives a path.
       case $host in
-        *-*-mingw*)
+        *-*-mingw* | windows*)
           # gcc leaves a trailing carriage return which upsets mingw
           acl_output=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;;
         *)
@@ -55821,10 +59890,10 @@ then :
   printf %s "(cached) " >&6
 else $as_nop
   if test -n "$gl_cv_host_cpu_c_abi"; then
-       case "$gl_cv_host_cpu_c_abi" in
+              case "$gl_cv_host_cpu_c_abi" in
          i386 | x86_64-x32 | arm | armhf | arm64-ilp32 | hppa | ia64-ilp32 | mips | mipsn32 | powerpc | riscv*-ilp32* | s390 | sparc)
            gl_cv_host_cpu_c_abi_32bit=yes ;;
-         x86_64 | alpha | arm64 | hppa64 | ia64 | mips64 | powerpc64 | powerpc64-elfv2 | riscv*-lp64* | s390x | sparc64 )
+         x86_64 | alpha | arm64 | aarch64c | hppa64 | ia64 | mips64 | powerpc64 | powerpc64-elfv2 | riscv*-lp64* | s390x | sparc64 )
            gl_cv_host_cpu_c_abi_32bit=no ;;
          *)
            gl_cv_host_cpu_c_abi_32bit=unknown ;;
@@ -55890,7 +59959,7 @@ fi
 rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
            ;;
 
-         arm* | aarch64 )
+         arm* | aarch64 | aarch64c )
            # Assume arm with EABI.
            # On arm64 systems, the C compiler may be generating code in one of
            # these ABIs:
@@ -61171,7 +65240,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by man-db $as_me 2.12.0, which was
+This file was extended by man-db $as_me 2.12.1, which was
 generated by GNU Autoconf 2.71.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -61239,7 +65308,7 @@ ac_cs_config_escaped=`printf "%s\n" "$ac_cs_config" | sed "s/^ //; s/'/'\\\\\\\\
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config='$ac_cs_config_escaped'
 ac_cs_version="\\
-man-db config.status 2.12.0
+man-db config.status 2.12.1
 configured by $0, generated by GNU Autoconf 2.71,
   with options \\"\$ac_cs_config\\"