1# Check for fnmatch - serial 15. -*- coding: utf-8 -*- 2 3# Copyright (C) 2000-2007, 2009-2021 Free Software Foundation, Inc. 4# This file is free software; the Free Software Foundation 5# gives unlimited permission to copy and/or distribute it, 6# with or without modifications, as long as this notice is preserved. 7 8# Autoconf defines AC_FUNC_FNMATCH, but that is obsolescent. 9# New applications should use the macros below instead. 10 11# Request a POSIX compliant fnmatch function. 12AC_DEFUN([gl_FUNC_FNMATCH_POSIX], 13[ 14 m4_divert_text([DEFAULTS], [gl_fnmatch_required=POSIX]) 15 16 AC_REQUIRE([gl_FNMATCH_H]) 17 AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles 18 gl_fnmatch_required_lowercase=` 19 echo $gl_fnmatch_required | LC_ALL=C tr '[[A-Z]]' '[[a-z]]' 20 ` 21 AC_CHECK_FUNCS_ONCE([fnmatch]) 22 if test $ac_cv_func_fnmatch = no; then 23 HAVE_FNMATCH=0 24 else 25 gl_fnmatch_cache_var="gl_cv_func_fnmatch_${gl_fnmatch_required_lowercase}" 26 AC_CACHE_CHECK([for working $gl_fnmatch_required fnmatch], 27 [$gl_fnmatch_cache_var], 28 [dnl Some versions of Solaris, SCO, and the GNU C Library 29 dnl have a broken or incompatible fnmatch. 30 dnl So we run a test program. If we are cross-compiling, take no chance. 31 dnl Thanks to John Oleynick, François Pinard, and Paul Eggert for this 32 dnl test. 33 if test $gl_fnmatch_required = GNU; then 34 gl_fnmatch_gnu_start= 35 gl_fnmatch_gnu_end= 36 else 37 gl_fnmatch_gnu_start='#if 0' 38 gl_fnmatch_gnu_end='#endif' 39 fi 40 AC_RUN_IFELSE( 41 [AC_LANG_PROGRAM( 42 [[#include <fnmatch.h> 43 static int 44 y (char const *pattern, char const *string, int flags) 45 { 46 return fnmatch (pattern, string, flags) == 0; 47 } 48 static int 49 n (char const *pattern, char const *string, int flags) 50 { 51 return fnmatch (pattern, string, flags) == FNM_NOMATCH; 52 } 53 ]], 54 [[char const *Apat = 'A' < '\\\\' ? "[A-\\\\\\\\]" : "[\\\\\\\\-A]"; 55 char const *apat = 'a' < '\\\\' ? "[a-\\\\\\\\]" : "[\\\\\\\\-a]"; 56 static char const A_1[] = { 'A' - 1, 0 }; 57 static char const A01[] = { 'A' + 1, 0 }; 58 static char const a_1[] = { 'a' - 1, 0 }; 59 static char const a01[] = { 'a' + 1, 0 }; 60 static char const bs_1[] = { '\\\\' - 1, 0 }; 61 static char const bs01[] = { '\\\\' + 1, 0 }; 62 int result = 0; 63 if (!n ("a*", "", 0)) 64 return 1; 65 if (!y ("a*", "abc", 0)) 66 return 1; 67 if (!y ("[/b", "[/b", 0)) /*"]]"*/ /* glibc Bugzilla bug 12378 */ 68 return 1; 69 if (!n ("d*/*1", "d/s/1", FNM_PATHNAME)) 70 return 2; 71 if (!y ("a\\\\bc", "abc", 0)) 72 return 3; 73 if (!n ("a\\\\bc", "abc", FNM_NOESCAPE)) 74 return 3; 75 if (!y ("*x", ".x", 0)) 76 return 4; 77 if (!n ("*x", ".x", FNM_PERIOD)) 78 return 4; 79 if (!y (Apat, "\\\\", 0)) 80 return 5; 81 if (!y (Apat, "A", 0)) 82 return 5; 83 if (!y (apat, "\\\\", 0)) 84 return 5; 85 if (!y (apat, "a", 0)) 86 return 5; 87 if (!(n (Apat, A_1, 0) == ('A' < '\\\\'))) 88 return 5; 89 if (!(n (apat, a_1, 0) == ('a' < '\\\\'))) 90 return 5; 91 if (!(y (Apat, A01, 0) == ('A' < '\\\\'))) 92 return 5; 93 if (!(y (apat, a01, 0) == ('a' < '\\\\'))) 94 return 5; 95 if (!(y (Apat, bs_1, 0) == ('A' < '\\\\'))) 96 return 5; 97 if (!(y (apat, bs_1, 0) == ('a' < '\\\\'))) 98 return 5; 99 if (!(n (Apat, bs01, 0) == ('A' < '\\\\'))) 100 return 5; 101 if (!(n (apat, bs01, 0) == ('a' < '\\\\'))) 102 return 5; 103 $gl_fnmatch_gnu_start 104 if (!y ("xxXX", "xXxX", FNM_CASEFOLD)) 105 result |= 8; 106 if (!y ("a++(x|yy)b", "a+xyyyyxb", FNM_EXTMATCH)) 107 result |= 16; 108 if (!n ("d*/*1", "d/s/1", FNM_FILE_NAME)) 109 result |= 32; 110 if (!y ("*", "x", FNM_FILE_NAME | FNM_LEADING_DIR)) 111 result |= 64; 112 if (!y ("x*", "x/y/z", FNM_FILE_NAME | FNM_LEADING_DIR)) 113 result |= 64; 114 if (!y ("*c*", "c/x", FNM_FILE_NAME | FNM_LEADING_DIR)) 115 result |= 64; 116 $gl_fnmatch_gnu_end 117 return result; 118 ]])], 119 [eval "$gl_fnmatch_cache_var=yes"], 120 [eval "$gl_fnmatch_cache_var=no"], 121 [case "$host_os" in 122 # Guess yes on musl systems. 123 *-musl*) eval "$gl_fnmatch_cache_var=\"guessing yes\"" ;; 124 # Guess no otherwise, even on glibc systems. 125 *) eval "$gl_fnmatch_cache_var=\"guessing no\"" ;; 126 esac 127 ]) 128 ]) 129 eval "gl_fnmatch_result=\"\$$gl_fnmatch_cache_var\"" 130 case "$gl_fnmatch_result" in 131 *yes) ;; 132 *) REPLACE_FNMATCH=1 ;; 133 esac 134 fi 135 if test $HAVE_FNMATCH = 0 || test $REPLACE_FNMATCH = 1; then 136 gl_REPLACE_FNMATCH_H 137 fi 138]) 139 140# Request a POSIX compliant fnmatch function with GNU extensions. 141AC_DEFUN([gl_FUNC_FNMATCH_GNU], 142[ 143 m4_divert_text([INIT_PREPARE], [gl_fnmatch_required=GNU]) 144 145 AC_REQUIRE([gl_FUNC_FNMATCH_POSIX]) 146]) 147 148AC_DEFUN([gl_PREREQ_FNMATCH], 149[ 150 dnl Prerequisites of lib/fnmatch.c. 151 AC_REQUIRE([AC_TYPE_MBSTATE_T]) 152 AC_CHECK_FUNCS_ONCE([mbsrtowcs]) 153]) 154