gnu/dist/gettext/gettext-tools/m4/fnmatch.m4

   1 # Check for fnmatch.
   2
   3 # This is a modified version of autoconf's AC_FUNC_FNMATCH.
   4 # This file should be simplified after Autoconf 2.57 is required.
   5
   6 dnl Copyright (C) 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
   7 dnl This file is free software; the Free Software Foundation
   8 dnl gives unlimited permission to copy and/or distribute it,
   9 dnl with or without modifications, as long as this notice is preserved.
  10
  11 # _AC_FUNC_FNMATCH_IF(STANDARD = GNU | POSIX, CACHE_VAR, IF-TRUE, IF-FALSE)
  12 # -------------------------------------------------------------------------
  13 # If a STANDARD compliant fnmatch is found, run IF-TRUE, otherwise
  14 # IF-FALSE.  Use CACHE_VAR.
  15 AC_DEFUN([_AC_FUNC_FNMATCH_IF],
  16 [AC_CACHE_CHECK(
  17    [for working $1 fnmatch],
  18    [$2],
  19   [dnl Some versions of Solaris, SCO, and the GNU C Library
  20    dnl have a broken or incompatible fnmatch.
  21    dnl So we run a test program.  If we are cross-compiling, take no chance.
  22    dnl Thanks to John Oleynick, François Pinard, and Paul Eggert for this test.
  23    AC_RUN_IFELSE(
  24       [AC_LANG_PROGRAM(
  25          [
  26 #          include <stdlib.h>
  27 #          include <fnmatch.h>
  28 #          define y(a, b, c) (fnmatch (a, b, c) == 0)
  29 #          define n(a, b, c) (fnmatch (a, b, c) == FNM_NOMATCH)
  30          ],
  31          [exit
  32            (!(y ("a*", "abc", 0)
  33               && n ("d*/*1", "d/s/1", FNM_PATHNAME)
  34               && y ("a\\\\bc", "abc", 0)
  35               && n ("a\\\\bc", "abc", FNM_NOESCAPE)
  36               && y ("*x", ".x", 0)
  37               && n ("*x", ".x", FNM_PERIOD)
  38               && m4_if([$1], [GNU],
  39                    [y ("xxXX", "xXxX", FNM_CASEFOLD)
  40                     && y ("a++(x|yy)b", "a+xyyyyxb", FNM_EXTMATCH)
  41                     && n ("d*/*1", "d/s/1", FNM_FILE_NAME)
  42                     && y ("*", "x", FNM_FILE_NAME | FNM_LEADING_DIR)
  43                     && y ("x*", "x/y/z", FNM_FILE_NAME | FNM_LEADING_DIR)
  44                     && y ("*c*", "c/x", FNM_FILE_NAME | FNM_LEADING_DIR)],
  45                    1)));])],
  46       [$2=yes],
  47       [$2=no],
  48       [$2=cross])])
  49 AS_IF([test $$2 = yes], [$3], [$4])
  50 ])# _AC_FUNC_FNMATCH_IF
  51
  52
  53 # _AC_LIBOBJ_FNMATCH
  54 # ------------------
  55 # Prepare the replacement of fnmatch.
  56 AC_DEFUN([_AC_LIBOBJ_FNMATCH],
  57 [AC_REQUIRE([AC_C_CONST])dnl
  58 AC_REQUIRE([AC_FUNC_ALLOCA])dnl
  59 AC_REQUIRE([AC_TYPE_MBSTATE_T])dnl
  60 AC_CHECK_DECLS([getenv])
  61 AC_CHECK_FUNCS([btowc mbsrtowcs mempcpy wmemchr wmemcpy wmempcpy])
  62 AC_CHECK_HEADERS([wchar.h wctype.h])
  63 AC_LIBOBJ([fnmatch])
  64 FNMATCH_H=fnmatch.h
  65 ])# _AC_LIBOBJ_FNMATCH
  66
  67
  68 AC_DEFUN([gl_FUNC_FNMATCH_POSIX],
  69 [
  70   FNMATCH_H=
  71   _AC_FUNC_FNMATCH_IF([POSIX], [ac_cv_func_fnmatch_posix],
  72                       [rm -f lib/fnmatch.h],
  73                       [_AC_LIBOBJ_FNMATCH])
  74   if test $ac_cv_func_fnmatch_posix != yes; then
  75     dnl We must choose a different name for our function, since on ELF systems
  76     dnl a broken fnmatch() in libc.so would override our fnmatch() if it is
  77     dnl compiled into a shared library.
  78     AC_DEFINE([fnmatch], [posix_fnmatch],
  79       [Define to a replacement function name for fnmatch().])
  80   fi
  81   AC_SUBST([FNMATCH_H])
  82 ])
  83
  84
  85 AC_DEFUN([gl_FUNC_FNMATCH_GNU],
  86 [
  87   dnl Persuade glibc <fnmatch.h> to declare FNM_CASEFOLD etc.
  88   AC_REQUIRE([AC_GNU_SOURCE])
  89
  90   FNMATCH_H=
  91   _AC_FUNC_FNMATCH_IF([GNU], [ac_cv_func_fnmatch_gnu],
  92                       [rm -f lib/fnmatch.h],
  93                       [_AC_LIBOBJ_FNMATCH])
  94   if test $ac_cv_func_fnmatch_gnu != yes; then
  95     dnl We must choose a different name for our function, since on ELF systems
  96     dnl a broken fnmatch() in libc.so would override our fnmatch() if it is
  97     dnl compiled into a shared library.
  98     AC_DEFINE([fnmatch], [gnu_fnmatch],
  99       [Define to a replacement function name for fnmatch().])
 100   fi
 101   AC_SUBST([FNMATCH_H])
 102 ])