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+# locale_h.m4 serial 28
+dnl Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN_ONCE([gl_LOCALE_H],
+[
+ dnl Ensure to expand the default settings once only, before all statements
+ dnl that occur in other macros.
+ AC_REQUIRE([gl_LOCALE_H_DEFAULTS])
+
+ dnl Persuade glibc <locale.h> to define locale_t and the int_p_*, int_n_*
+ dnl members of 'struct lconv'.
+ AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+
+ dnl If <stddef.h> is replaced, then <locale.h> must also be replaced.
+ AC_REQUIRE([gl_STDDEF_H])
+
+ AC_REQUIRE([gl_LOCALE_T])
+
+ dnl Solaris 11.0 defines the int_p_*, int_n_* members of 'struct lconv'
+ dnl only if _LCONV_C99 is defined.
+ AC_REQUIRE([AC_CANONICAL_HOST])
+ case "$host_os" in
+ solaris*)
+ AC_DEFINE([_LCONV_C99], [1], [Define to 1 on Solaris.])
+ ;;
+ esac
+
+ AC_CACHE_CHECK([whether locale.h conforms to POSIX:2001],
+ [gl_cv_header_locale_h_posix2001],
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[#include <locale.h>
+ int x = LC_MESSAGES;
+ int y = sizeof (((struct lconv *) 0)->decimal_point);]],
+ [[]])],
+ [gl_cv_header_locale_h_posix2001=yes],
+ [gl_cv_header_locale_h_posix2001=no])])
+
+ dnl Check whether 'struct lconv' is complete.
+ dnl Bionic libc's 'struct lconv' is just a dummy.
+ dnl On OpenBSD 4.9, HP-UX 11, IRIX 6.5, OSF/1 5.1, Solaris 9, Cygwin 1.5.x,
+ dnl mingw, MSVC 9, it lacks the int_p_* and int_n_* members.
+ AC_CACHE_CHECK([whether struct lconv is properly defined],
+ [gl_cv_sys_struct_lconv_ok],
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[#include <locale.h>
+ struct lconv l;
+ int x = sizeof (l.decimal_point);
+ int y = sizeof (l.int_p_cs_precedes);]],
+ [[]])],
+ [gl_cv_sys_struct_lconv_ok=yes],
+ [gl_cv_sys_struct_lconv_ok=no])
+ ])
+ if test $gl_cv_sys_struct_lconv_ok = no; then
+ dnl On native Windows with MSVC, merely define these member names as macros.
+ dnl This avoids trouble in C++ mode.
+ case "$host_os" in
+ mingw*)
+ AC_EGREP_CPP([Special], [
+#ifdef _MSC_VER
+ Special
+#endif
+ ],
+ [],
+ [REPLACE_STRUCT_LCONV=1])
+ ;;
+ *) REPLACE_STRUCT_LCONV=1 ;;
+ esac
+ fi
+
+ dnl <locale.h> is always overridden, because of GNULIB_POSIXCHECK.
+ gl_NEXT_HEADERS([locale.h])
+
+ dnl Check for declarations of anything we want to poison if the
+ dnl corresponding gnulib module is not in use.
+ gl_WARN_ON_USE_PREPARE([[#include <locale.h>
+/* Some systems provide declarations in a non-standard header. */
+#if HAVE_XLOCALE_H
+# include <xlocale.h>
+#endif
+ ]],
+ [setlocale newlocale duplocale freelocale])
+])
+
+dnl Checks to determine whether the system has the locale_t type,
+dnl and how to obtain it.
+AC_DEFUN([gl_LOCALE_T],
+[
+ dnl Persuade glibc and Solaris <locale.h> to define locale_t.
+ AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+
+ dnl Check whether use of locale_t requires inclusion of <xlocale.h>,
+ dnl e.g. on Mac OS X 10.5. If <locale.h> does not define locale_t by
+ dnl itself, we assume that <xlocale.h> will do so.
+ AC_CACHE_CHECK([whether locale.h defines locale_t],
+ [gl_cv_header_locale_has_locale_t],
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[#include <locale.h>
+ locale_t x;]],
+ [[]])],
+ [gl_cv_header_locale_has_locale_t=yes],
+ [gl_cv_header_locale_has_locale_t=no])
+ ])
+
+ dnl Check for <xlocale.h>.
+ AC_CHECK_HEADERS_ONCE([xlocale.h])
+ if test $ac_cv_header_xlocale_h = yes; then
+ HAVE_XLOCALE_H=1
+ if test $gl_cv_header_locale_has_locale_t = yes; then
+ gl_cv_header_locale_h_needs_xlocale_h=no
+ else
+ gl_cv_header_locale_h_needs_xlocale_h=yes
+ fi
+ HAVE_LOCALE_T=1
+ else
+ HAVE_XLOCALE_H=0
+ gl_cv_header_locale_h_needs_xlocale_h=no
+ if test $gl_cv_header_locale_has_locale_t = yes; then
+ HAVE_LOCALE_T=1
+ else
+ HAVE_LOCALE_T=0
+ fi
+ fi
+ AC_SUBST([HAVE_XLOCALE_H])
+])
+
+# gl_LOCALE_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
+AC_DEFUN([gl_LOCALE_MODULE_INDICATOR],
+[
+ dnl Ensure to expand the default settings once only.
+ gl_LOCALE_H_REQUIRE_DEFAULTS
+ gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+ dnl Define it also as a C macro, for the benefit of the unit tests.
+ gl_MODULE_INDICATOR_FOR_TESTS([$1])
+])
+
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd. It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
+AC_DEFUN([gl_LOCALE_H_REQUIRE_DEFAULTS],
+[
+ m4_defun(GL_MODULE_INDICATOR_PREFIX[_LOCALE_H_MODULE_INDICATOR_DEFAULTS], [
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LOCALECONV])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SETLOCALE])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SETLOCALE_NULL])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_DUPLOCALE])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LOCALENAME])
+ ])
+ m4_require(GL_MODULE_INDICATOR_PREFIX[_LOCALE_H_MODULE_INDICATOR_DEFAULTS])
+ AC_REQUIRE([gl_LOCALE_H_DEFAULTS])
+])
+
+AC_DEFUN([gl_LOCALE_H_DEFAULTS],
+[
+ dnl Assume proper GNU behavior unless another module says otherwise.
+ HAVE_NEWLOCALE=1; AC_SUBST([HAVE_NEWLOCALE])
+ HAVE_DUPLOCALE=1; AC_SUBST([HAVE_DUPLOCALE])
+ HAVE_FREELOCALE=1; AC_SUBST([HAVE_FREELOCALE])
+ REPLACE_LOCALECONV=0; AC_SUBST([REPLACE_LOCALECONV])
+ REPLACE_SETLOCALE=0; AC_SUBST([REPLACE_SETLOCALE])
+ REPLACE_NEWLOCALE=0; AC_SUBST([REPLACE_NEWLOCALE])
+ REPLACE_DUPLOCALE=0; AC_SUBST([REPLACE_DUPLOCALE])
+ REPLACE_FREELOCALE=0; AC_SUBST([REPLACE_FREELOCALE])
+ REPLACE_STRUCT_LCONV=0; AC_SUBST([REPLACE_STRUCT_LCONV])
+ LOCALENAME_ENHANCE_LOCALE_FUNCS=0; AC_SUBST([LOCALENAME_ENHANCE_LOCALE_FUNCS])
+])