| 1 | # Check for fnmatch - serial 9.
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| 2 |
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| 3 | # Copyright (C) 2000-2007, 2009-2012 Free Software Foundation, Inc.
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| 4 | # This file is free software; the Free Software Foundation
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| 5 | # gives unlimited permission to copy and/or distribute it,
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| 6 | # with or without modifications, as long as this notice is preserved.
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| 7 |
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| 8 | # Autoconf defines AC_FUNC_FNMATCH, but that is obsolescent.
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| 9 | # New applications should use the macros below instead.
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| 10 |
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| 11 | # Request a POSIX compliant fnmatch function.
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| 12 | AC_DEFUN([gl_FUNC_FNMATCH_POSIX],
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| 13 | [
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| 14 | m4_divert_text([DEFAULTS], [gl_fnmatch_required=POSIX])
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| 15 |
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| 16 | dnl Persuade glibc <fnmatch.h> to declare FNM_CASEFOLD etc.
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| 17 | dnl This is only needed if gl_fnmatch_required = GNU. It would be possible
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| 18 | dnl to avoid this dependency for gl_FUNC_FNMATCH_POSIX by putting
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| 19 | dnl gl_FUNC_FNMATCH_GNU into a separate .m4 file.
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| 20 | AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
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| 21 |
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| 22 | FNMATCH_H=
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| 23 | gl_fnmatch_required_lowercase=`
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| 24 | echo $gl_fnmatch_required | LC_ALL=C tr '[[A-Z]]' '[[a-z]]'
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| 25 | `
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| 26 | gl_fnmatch_cache_var="gl_cv_func_fnmatch_${gl_fnmatch_required_lowercase}"
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| 27 | AC_CACHE_CHECK([for working $gl_fnmatch_required fnmatch],
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| 28 | [$gl_fnmatch_cache_var],
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| 29 | [dnl Some versions of Solaris, SCO, and the GNU C Library
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| 30 | dnl have a broken or incompatible fnmatch.
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| 31 | dnl So we run a test program. If we are cross-compiling, take no chance.
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| 32 | dnl Thanks to John Oleynick, François Pinard, and Paul Eggert for this
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| 33 | dnl test.
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| 34 | if test $gl_fnmatch_required = GNU; then
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| 35 | gl_fnmatch_gnu_start=
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| 36 | gl_fnmatch_gnu_end=
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| 37 | else
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| 38 | gl_fnmatch_gnu_start='#if 0'
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| 39 | gl_fnmatch_gnu_end='#endif'
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| 40 | fi
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| 41 | AC_RUN_IFELSE(
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| 42 | [AC_LANG_PROGRAM(
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| 43 | [[#include <fnmatch.h>
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| 44 | static int
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| 45 | y (char const *pattern, char const *string, int flags)
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| 46 | {
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| 47 | return fnmatch (pattern, string, flags) == 0;
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| 48 | }
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| 49 | static int
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| 50 | n (char const *pattern, char const *string, int flags)
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| 51 | {
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| 52 | return fnmatch (pattern, string, flags) == FNM_NOMATCH;
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| 53 | }
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| 54 | ]],
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| 55 | [[char const *Apat = 'A' < '\\\\' ? "[A-\\\\\\\\]" : "[\\\\\\\\-A]";
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| 56 | char const *apat = 'a' < '\\\\' ? "[a-\\\\\\\\]" : "[\\\\\\\\-a]";
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| 57 | static char const A_1[] = { 'A' - 1, 0 };
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| 58 | static char const A01[] = { 'A' + 1, 0 };
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| 59 | static char const a_1[] = { 'a' - 1, 0 };
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| 60 | static char const a01[] = { 'a' + 1, 0 };
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| 61 | static char const bs_1[] = { '\\\\' - 1, 0 };
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| 62 | static char const bs01[] = { '\\\\' + 1, 0 };
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| 63 | int result = 0;
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| 64 | if (!n ("a*", "", 0))
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| 65 | return 1;
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| 66 | if (!y ("a*", "abc", 0))
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| 67 | return 1;
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| 68 | if (!y ("[/b", "[/b", 0)) /*"]]"*/ /* glibc Bugzilla bug 12378 */
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| 69 | return 1;
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| 70 | if (!n ("d*/*1", "d/s/1", FNM_PATHNAME))
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| 71 | return 2;
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| 72 | if (!y ("a\\\\bc", "abc", 0))
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| 73 | return 3;
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| 74 | if (!n ("a\\\\bc", "abc", FNM_NOESCAPE))
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| 75 | return 3;
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| 76 | if (!y ("*x", ".x", 0))
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| 77 | return 4;
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| 78 | if (!n ("*x", ".x", FNM_PERIOD))
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| 79 | return 4;
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| 80 | if (!y (Apat, "\\\\", 0))
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| 81 | return 5;
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| 82 | if (!y (Apat, "A", 0))
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| 83 | return 5;
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| 84 | if (!y (apat, "\\\\", 0))
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| 85 | return 5;
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| 86 | if (!y (apat, "a", 0))
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| 87 | return 5;
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| 88 | if (!(n (Apat, A_1, 0) == ('A' < '\\\\')))
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| 89 | return 5;
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| 90 | if (!(n (apat, a_1, 0) == ('a' < '\\\\')))
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| 91 | return 5;
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| 92 | if (!(y (Apat, A01, 0) == ('A' < '\\\\')))
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| 93 | return 5;
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| 94 | if (!(y (apat, a01, 0) == ('a' < '\\\\')))
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| 95 | return 5;
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| 96 | if (!(y (Apat, bs_1, 0) == ('A' < '\\\\')))
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| 97 | return 5;
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| 98 | if (!(y (apat, bs_1, 0) == ('a' < '\\\\')))
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| 99 | return 5;
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| 100 | if (!(n (Apat, bs01, 0) == ('A' < '\\\\')))
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| 101 | return 5;
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| 102 | if (!(n (apat, bs01, 0) == ('a' < '\\\\')))
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| 103 | return 5;
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| 104 | $gl_fnmatch_gnu_start
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| 105 | if (!y ("xxXX", "xXxX", FNM_CASEFOLD))
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| 106 | result |= 8;
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| 107 | if (!y ("a++(x|yy)b", "a+xyyyyxb", FNM_EXTMATCH))
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| 108 | result |= 16;
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| 109 | if (!n ("d*/*1", "d/s/1", FNM_FILE_NAME))
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| 110 | result |= 32;
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| 111 | if (!y ("*", "x", FNM_FILE_NAME | FNM_LEADING_DIR))
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| 112 | result |= 64;
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| 113 | if (!y ("x*", "x/y/z", FNM_FILE_NAME | FNM_LEADING_DIR))
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| 114 | result |= 64;
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| 115 | if (!y ("*c*", "c/x", FNM_FILE_NAME | FNM_LEADING_DIR))
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| 116 | result |= 64;
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| 117 | $gl_fnmatch_gnu_end
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| 118 | return result;
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| 119 | ]])],
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| 120 | [eval "$gl_fnmatch_cache_var=yes"],
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| 121 | [eval "$gl_fnmatch_cache_var=no"],
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| 122 | [eval "$gl_fnmatch_cache_var=\"guessing no\""])
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| 123 | ])
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| 124 | eval "gl_fnmatch_result=\"\$$gl_fnmatch_cache_var\""
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| 125 | if test "$gl_fnmatch_result" = yes; then
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| 126 | dnl Not strictly necessary. Only to avoid spurious leftover files if people
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| 127 | dnl don't do "make distclean".
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| 128 | rm -f "$gl_source_base/fnmatch.h"
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| 129 | else
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| 130 | FNMATCH_H=fnmatch.h
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| 131 | fi
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| 132 | AC_SUBST([FNMATCH_H])
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| 133 | AM_CONDITIONAL([GL_GENERATE_FNMATCH_H], [test -n "$FNMATCH_H"])
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| 134 | ])
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| 135 |
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| 136 | # Request a POSIX compliant fnmatch function with GNU extensions.
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| 137 | AC_DEFUN([gl_FUNC_FNMATCH_GNU],
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| 138 | [
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| 139 | m4_divert_text([INIT_PREPARE], [gl_fnmatch_required=GNU])
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| 140 |
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| 141 | AC_REQUIRE([gl_FUNC_FNMATCH_POSIX])
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| 142 | ])
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| 143 |
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| 144 | AC_DEFUN([gl_PREREQ_FNMATCH],
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| 145 | [
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| 146 | dnl We must choose a different name for our function, since on ELF systems
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| 147 | dnl a broken fnmatch() in libc.so would override our fnmatch() if it is
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| 148 | dnl compiled into a shared library.
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| 149 | AC_DEFINE_UNQUOTED([fnmatch], [${gl_fnmatch_required_lowercase}_fnmatch],
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| 150 | [Define to a replacement function name for fnmatch().])
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| 151 | dnl Prerequisites of lib/fnmatch.c.
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| 152 | AC_REQUIRE([AC_TYPE_MBSTATE_T])
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| 153 | AC_CHECK_DECLS([isblank], [], [], [[#include <ctype.h>]])
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| 154 | AC_CHECK_FUNCS_ONCE([btowc isblank iswctype mbsrtowcs mempcpy wmemchr wmemcpy wmempcpy])
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| 155 | AC_CHECK_HEADERS_ONCE([wctype.h])
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| 156 | ])
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