# Check for fnmatch - serial 20 -*- coding: utf-8 -*- # Copyright (C) 2000-2007, 2009-2023 Free Software Foundation, Inc. # This file is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. # Autoconf defines AC_FUNC_FNMATCH, but that is obsolescent. # New applications should use the macros below instead. # Request a POSIX compliant fnmatch function. AC_DEFUN([gl_FUNC_FNMATCH_POSIX], [ m4_divert_text([DEFAULTS], [gl_fnmatch_required=POSIX]) AC_REQUIRE([gl_FNMATCH_H]) AC_REQUIRE([AC_CANONICAL_HOST]) gl_fnmatch_required_lowercase=` echo $gl_fnmatch_required | LC_ALL=C tr '[[A-Z]]' '[[a-z]]' ` AC_CHECK_FUNCS_ONCE([fnmatch]) if test $ac_cv_func_fnmatch = no; then HAVE_FNMATCH=0 else gl_fnmatch_cache_var="gl_cv_func_fnmatch_${gl_fnmatch_required_lowercase}" AC_CACHE_CHECK([for working $gl_fnmatch_required fnmatch], [$gl_fnmatch_cache_var], [dnl Some versions of Solaris, SCO, and the GNU C Library dnl have a broken or incompatible fnmatch. dnl So we run a test program. If we are cross-compiling, take no chance. dnl Thanks to John Oleynick, François Pinard, and Paul Eggert for this dnl test. if test $gl_fnmatch_required = GNU; then gl_fnmatch_gnu_start= gl_fnmatch_gnu_end= else gl_fnmatch_gnu_start='#if 0' gl_fnmatch_gnu_end='#endif' fi AC_RUN_IFELSE( [AC_LANG_PROGRAM( [[#include #include #include static int y (char const *pattern, char const *string, int flags) { return fnmatch (pattern, string, flags) == 0; } static int n (char const *pattern, char const *string, int flags) { return fnmatch (pattern, string, flags) == FNM_NOMATCH; } ]], [[char const *Apat = 'A' < '\\\\' ? "[A-\\\\\\\\]" : "[\\\\\\\\-A]"; char const *apat = 'a' < '\\\\' ? "[a-\\\\\\\\]" : "[\\\\\\\\-a]"; static char const A_1[] = { 'A' - 1, 0 }; static char const A01[] = { 'A' + 1, 0 }; static char const a_1[] = { 'a' - 1, 0 }; static char const a01[] = { 'a' + 1, 0 }; static char const bs_1[] = { '\\\\' - 1, 0 }; static char const bs01[] = { '\\\\' + 1, 0 }; int result = 0; /* ==== Start of tests in the "C" locale ==== */ /* These are sanity checks. They all succeed on current platforms. */ if (!n ("a*", "", 0)) return 1; if (!y ("a*", "abc", 0)) return 1; if (!n ("d*/*1", "d/s/1", FNM_PATHNAME)) return 1; if (!y ("a\\\\bc", "abc", 0)) return 1; if (!n ("a\\\\bc", "abc", FNM_NOESCAPE)) return 1; if (!y ("*x", ".x", 0)) return 1; if (!n ("*x", ".x", FNM_PERIOD)) return 1; /* glibc bug exists in glibc 2.3.3, fixed in glibc 2.5. */ if (!y (Apat, "\\\\", 0)) result |= 2; if (!y (Apat, "A", 0)) result |= 2; if (!y (apat, "\\\\", 0)) result |= 2; if (!y (apat, "a", 0)) result |= 2; if (!(n (Apat, A_1, 0) == ('A' < '\\\\'))) result |= 2; if (!(n (apat, a_1, 0) == ('a' < '\\\\'))) result |= 2; if (!(y (Apat, A01, 0) == ('A' < '\\\\'))) result |= 2; if (!(y (apat, a01, 0) == ('a' < '\\\\'))) result |= 2; if (!(y (Apat, bs_1, 0) == ('A' < '\\\\'))) result |= 2; if (!(y (apat, bs_1, 0) == ('a' < '\\\\'))) result |= 2; if (!(n (Apat, bs01, 0) == ('A' < '\\\\'))) result |= 2; if (!(n (apat, bs01, 0) == ('a' < '\\\\'))) result |= 2; /* glibc bug exists in glibc 2.12, fixed in glibc 2.13. */ if (!y ("[/b", "[/b", 0)) /*"]]"*/ result |= 4; /* glibc bug is fixed in glibc 2.20. glibc bugs 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; $gl_fnmatch_gnu_start /* ==== Start of GNU extensions tests ==== */ /* Sanity checks, mainly to check the presence of the FNM_* macros. */ if (!y ("xxXX", "xXxX", FNM_CASEFOLD)) result |= 64; if (!y ("a++(x|yy)b", "a+xyyyyxb", FNM_EXTMATCH)) result |= 64; if (!n ("d*/*1", "d/s/1", FNM_FILE_NAME)) result |= 64; if (!y ("*", "x", FNM_FILE_NAME | FNM_LEADING_DIR)) result |= 64; if (!y ("x*", "x/y/z", FNM_FILE_NAME | FNM_LEADING_DIR)) result |= 64; if (!y ("*c*", "c/x", FNM_FILE_NAME | FNM_LEADING_DIR)) result |= 64; $gl_fnmatch_gnu_end /* ==== End of GNU extensions tests ==== */ /* ==== End of tests in the "C" locale ==== */ /* ==== Start of tests that require a specific locale ==== */ /* This test fails on Solaris 11.4. */ if (setlocale (LC_ALL, "en_US.UTF-8") != NULL) { if (!n ("[!a-z]", "", 0)) result |= 16; } /* This test fails on NetBSD 9.3, Android 13. */ if (setlocale (LC_ALL, "C.UTF-8") != NULL) { if (!y ("x?y", "x\\303\\274y", 0)) result |= 32; } /* ==== End of tests that require a specific locale ==== */ return result; ]])], [eval "$gl_fnmatch_cache_var=yes"], [eval "$gl_fnmatch_cache_var=no"], [case "$host_os" in # Guess yes on musl systems. *-musl* | midipix*) eval "$gl_fnmatch_cache_var=\"guessing yes\"" ;; # Guess no otherwise, even on glibc systems. *) eval "$gl_fnmatch_cache_var=\"guessing no\"" ;; esac ]) ]) eval "gl_fnmatch_result=\"\$$gl_fnmatch_cache_var\"" case "$gl_fnmatch_result" in *yes) ;; *) REPLACE_FNMATCH=1 ;; esac dnl On AIX 7.2 in 32-bit mode, fnmatch()'s only POSIX compliance problem is dnl that is does not support characters outside the Unicode BMP correctly. dnl Test case: fnmatch ("x?y", "x\360\237\230\213y", 0) == 0 dnl This is due to wchar_t being only 16 bits wide. AC_REQUIRE([gl_UCHAR_H]) if test $SMALL_WCHAR_T = 1; then case "$host_os" in cygwin*) dnl On Cygwin < 3.5.0, the above $gl_fnmatch_result came out as 'no', dnl On Cygwin >= 3.5.0, fnmatch supports all Unicode characters, dnl despite wchar_t being only 16 bits wide (because internally it dnl works on wint_t values). ;; *) REPLACE_FNMATCH=1 ;; esac fi fi if test $HAVE_FNMATCH = 0 || test $REPLACE_FNMATCH = 1; then gl_REPLACE_FNMATCH_H fi ]) # Request a POSIX compliant fnmatch function with GNU extensions. AC_DEFUN([gl_FUNC_FNMATCH_GNU], [ m4_divert_text([INIT_PREPARE], [gl_fnmatch_required=GNU]) AC_REQUIRE([gl_FUNC_FNMATCH_POSIX]) ]) AC_DEFUN([gl_PREREQ_FNMATCH], [ dnl Prerequisites of lib/fnmatch.c. AC_REQUIRE([AC_TYPE_MBSTATE_T]) AC_CHECK_FUNCS_ONCE([mbsrtowcs]) ])