1# Check for fnmatch - serial 9. -*- coding: utf-8 -*- 2 3# Copyright (C) 2000-2007, 2009-2017 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 dnl Persuade glibc <fnmatch.h> to declare FNM_CASEFOLD etc. 17 dnl This is only needed if gl_fnmatch_required = GNU. It would be possible 18 dnl to avoid this dependency for gl_FUNC_FNMATCH_POSIX by putting 19 dnl gl_FUNC_FNMATCH_GNU into a separate .m4 file. 20 AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) 21 22 FNMATCH_H= 23 gl_fnmatch_required_lowercase=` 24 echo $gl_fnmatch_required | LC_ALL=C tr '[[A-Z]]' '[[a-z]]' 25 ` 26 gl_fnmatch_cache_var="gl_cv_func_fnmatch_${gl_fnmatch_required_lowercase}" 27 AC_CACHE_CHECK([for working $gl_fnmatch_required fnmatch], 28 [$gl_fnmatch_cache_var], 29 [dnl Some versions of Solaris, SCO, and the GNU C Library 30 dnl have a broken or incompatible fnmatch. 31 dnl So we run a test program. If we are cross-compiling, take no chance. 32 dnl Thanks to John Oleynick, François Pinard, and Paul Eggert for this 33 dnl test. 34 if test $gl_fnmatch_required = GNU; then 35 gl_fnmatch_gnu_start= 36 gl_fnmatch_gnu_end= 37 else 38 gl_fnmatch_gnu_start='#if 0' 39 gl_fnmatch_gnu_end='#endif' 40 fi 41 AC_RUN_IFELSE( 42 [AC_LANG_PROGRAM( 43 [[#include <fnmatch.h> 44 static int 45 y (char const *pattern, char const *string, int flags) 46 { 47 return fnmatch (pattern, string, flags) == 0; 48 } 49 static int 50 n (char const *pattern, char const *string, int flags) 51 { 52 return fnmatch (pattern, string, flags) == FNM_NOMATCH; 53 } 54 ]], 55 [[char const *Apat = 'A' < '\\\\' ? "[A-\\\\\\\\]" : "[\\\\\\\\-A]"; 56 char const *apat = 'a' < '\\\\' ? "[a-\\\\\\\\]" : "[\\\\\\\\-a]"; 57 static char const A_1[] = { 'A' - 1, 0 }; 58 static char const A01[] = { 'A' + 1, 0 }; 59 static char const a_1[] = { 'a' - 1, 0 }; 60 static char const a01[] = { 'a' + 1, 0 }; 61 static char const bs_1[] = { '\\\\' - 1, 0 }; 62 static char const bs01[] = { '\\\\' + 1, 0 }; 63 int result = 0; 64 if (!n ("a*", "", 0)) 65 return 1; 66 if (!y ("a*", "abc", 0)) 67 return 1; 68 if (!y ("[/b", "[/b", 0)) /*"]]"*/ /* glibc Bugzilla bug 12378 */ 69 return 1; 70 if (!n ("d*/*1", "d/s/1", FNM_PATHNAME)) 71 return 2; 72 if (!y ("a\\\\bc", "abc", 0)) 73 return 3; 74 if (!n ("a\\\\bc", "abc", FNM_NOESCAPE)) 75 return 3; 76 if (!y ("*x", ".x", 0)) 77 return 4; 78 if (!n ("*x", ".x", FNM_PERIOD)) 79 return 4; 80 if (!y (Apat, "\\\\", 0)) 81 return 5; 82 if (!y (Apat, "A", 0)) 83 return 5; 84 if (!y (apat, "\\\\", 0)) 85 return 5; 86 if (!y (apat, "a", 0)) 87 return 5; 88 if (!(n (Apat, A_1, 0) == ('A' < '\\\\'))) 89 return 5; 90 if (!(n (apat, a_1, 0) == ('a' < '\\\\'))) 91 return 5; 92 if (!(y (Apat, A01, 0) == ('A' < '\\\\'))) 93 return 5; 94 if (!(y (apat, a01, 0) == ('a' < '\\\\'))) 95 return 5; 96 if (!(y (Apat, bs_1, 0) == ('A' < '\\\\'))) 97 return 5; 98 if (!(y (apat, bs_1, 0) == ('a' < '\\\\'))) 99 return 5; 100 if (!(n (Apat, bs01, 0) == ('A' < '\\\\'))) 101 return 5; 102 if (!(n (apat, bs01, 0) == ('a' < '\\\\'))) 103 return 5; 104 $gl_fnmatch_gnu_start 105 if (!y ("xxXX", "xXxX", FNM_CASEFOLD)) 106 result |= 8; 107 if (!y ("a++(x|yy)b", "a+xyyyyxb", FNM_EXTMATCH)) 108 result |= 16; 109 if (!n ("d*/*1", "d/s/1", FNM_FILE_NAME)) 110 result |= 32; 111 if (!y ("*", "x", FNM_FILE_NAME | FNM_LEADING_DIR)) 112 result |= 64; 113 if (!y ("x*", "x/y/z", FNM_FILE_NAME | FNM_LEADING_DIR)) 114 result |= 64; 115 if (!y ("*c*", "c/x", FNM_FILE_NAME | FNM_LEADING_DIR)) 116 result |= 64; 117 $gl_fnmatch_gnu_end 118 return result; 119 ]])], 120 [eval "$gl_fnmatch_cache_var=yes"], 121 [eval "$gl_fnmatch_cache_var=no"], 122 [eval "$gl_fnmatch_cache_var=\"guessing no\""]) 123 ]) 124 eval "gl_fnmatch_result=\"\$$gl_fnmatch_cache_var\"" 125 if test "$gl_fnmatch_result" = yes; then 126 dnl Not strictly necessary. Only to avoid spurious leftover files if people 127 dnl don't do "make distclean". 128 rm -f "$gl_source_base/fnmatch.h" 129 else 130 FNMATCH_H=fnmatch.h 131 fi 132 AC_SUBST([FNMATCH_H]) 133 AM_CONDITIONAL([GL_GENERATE_FNMATCH_H], [test -n "$FNMATCH_H"]) 134]) 135 136# Request a POSIX compliant fnmatch function with GNU extensions. 137AC_DEFUN([gl_FUNC_FNMATCH_GNU], 138[ 139 m4_divert_text([INIT_PREPARE], [gl_fnmatch_required=GNU]) 140 141 AC_REQUIRE([gl_FUNC_FNMATCH_POSIX]) 142]) 143 144AC_DEFUN([gl_PREREQ_FNMATCH], 145[ 146 dnl We must choose a different name for our function, since on ELF systems 147 dnl a broken fnmatch() in libc.so would override our fnmatch() if it is 148 dnl compiled into a shared library. 149 AC_DEFINE_UNQUOTED([fnmatch], [${gl_fnmatch_required_lowercase}_fnmatch], 150 [Define to a replacement function name for fnmatch().]) 151 dnl Prerequisites of lib/fnmatch.c. 152 AC_REQUIRE([AC_TYPE_MBSTATE_T]) 153 AC_CHECK_DECLS([isblank], [], [], [[#include <ctype.h>]]) 154 AC_CHECK_FUNCS_ONCE([btowc isblank iswctype mbsrtowcs mempcpy wmemchr wmemcpy wmempcpy]) 155 AC_CHECK_HEADERS_ONCE([wctype.h]) 156]) 157