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# fnmatch_h.m4 serial 8
dnl Copyright (C) 2009-2024 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
dnl From Bruno Haible.
AC_DEFUN_ONCE([gl_FNMATCH_H],
[
AC_REQUIRE([gl_FNMATCH_H_DEFAULTS])
m4_ifdef([gl_ANSI_CXX], [AC_REQUIRE([gl_ANSI_CXX])])
AC_CHECK_HEADERS_ONCE([fnmatch.h])
gl_CHECK_NEXT_HEADERS([fnmatch.h])
dnl Persuade glibc <fnmatch.h> to declare FNM_CASEFOLD etc.
dnl This is only needed if gl_fnmatch_required = GNU. It would be possible
dnl to avoid this dependency for gl_FUNC_FNMATCH_POSIX by putting
dnl gl_FUNC_FNMATCH_GNU into a separate .m4 file.
AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
if test $ac_cv_header_fnmatch_h = yes; then
HAVE_FNMATCH_H=1
else
HAVE_FNMATCH_H=0
fi
AC_SUBST([HAVE_FNMATCH_H])
m4_ifdef([gl_POSIXCHECK],
[GL_GENERATE_FNMATCH_H=true],
[GL_GENERATE_FNMATCH_H=false
if m4_ifdef([gl_ANSI_CXX], [test "$CXX" != no], [false]); then
dnl Override <fnmatch.h> always, to support the C++ GNULIB_NAMESPACE.
GL_GENERATE_FNMATCH_H=true
else
if test $ac_cv_header_fnmatch_h != yes; then
dnl Provide a substitute <fnmatch.h> file.
GL_GENERATE_FNMATCH_H=true
fi
fi
])
dnl Check for declarations of anything we want to poison if the
dnl corresponding gnulib module is not in use.
gl_WARN_ON_USE_PREPARE([[#include <fnmatch.h>
]],
[fnmatch])
])
dnl Unconditionally enables the replacement of <fnmatch.h>.
AC_DEFUN([gl_REPLACE_FNMATCH_H],
[
gl_FNMATCH_H_REQUIRE_DEFAULTS
GL_GENERATE_FNMATCH_H=true
])
# gl_FNMATCH_MODULE_INDICATOR([modulename])
# sets the shell variable that indicates the presence of the given module
# to a C preprocessor expression that will evaluate to 1.
# This macro invocation must not occur in macros that are AC_REQUIREd.
AC_DEFUN([gl_FNMATCH_MODULE_INDICATOR],
[
dnl Ensure to expand the default settings once only.
gl_FNMATCH_H_REQUIRE_DEFAULTS
gl_MODULE_INDICATOR_SET_VARIABLE([$1])
dnl Define it also as a C macro, for the benefit of the unit tests.
gl_MODULE_INDICATOR_FOR_TESTS([$1])
])
# Initializes the default values for AC_SUBSTed shell variables.
# This macro must not be AC_REQUIREd. It must only be invoked, and only
# outside of macros or in macros that are not AC_REQUIREd.
AC_DEFUN([gl_FNMATCH_H_REQUIRE_DEFAULTS],
[
m4_defun(GL_MODULE_INDICATOR_PREFIX[_FNMATCH_H_MODULE_INDICATOR_DEFAULTS], [
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FNMATCH])
])
m4_require(GL_MODULE_INDICATOR_PREFIX[_FNMATCH_H_MODULE_INDICATOR_DEFAULTS])
AC_REQUIRE([gl_FNMATCH_H_DEFAULTS])
])
AC_DEFUN([gl_FNMATCH_H_DEFAULTS],
[
dnl Assume POSIX behavior unless another module says otherwise.
HAVE_FNMATCH=1; AC_SUBST([HAVE_FNMATCH])
REPLACE_FNMATCH=0; AC_SUBST([REPLACE_FNMATCH])
])
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