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| 1 # Check for fnmatch - serial 9. |
| 2 |
| 3 # Copyright (C) 2000-2007, 2009-2012 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. |
| 12 AC_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 "$FNMATCH_H"]) |
| 134 ]) |
| 135 |
| 136 # Request a POSIX compliant fnmatch function with GNU extensions. |
| 137 AC_DEFUN([gl_FUNC_FNMATCH_GNU], |
| 138 [ |
| 139 m4_divert_text([INIT_PREPARE], [gl_fnmatch_required=GNU]) |
| 140 |
| 141 AC_REQUIRE([gl_FUNC_FNMATCH_POSIX]) |
| 142 ]) |
| 143 |
| 144 AC_DEFUN([gl_PREREQ_FNMATCH], |
| 145 [ |
| 146 dnl We must choose a different name for our function, since on ELF systems |
| 147 dnl a broken fnmatch() in libc.so would override our fnmatch() if it is |
| 148 dnl compiled into a shared library. |
| 149 AC_DEFINE_UNQUOTED([fnmatch], [${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 ]) |
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