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-rw-r--r--gl/m4/fnmatch_h.m487
1 files changed, 87 insertions, 0 deletions
diff --git a/gl/m4/fnmatch_h.m4 b/gl/m4/fnmatch_h.m4
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+# fnmatch_h.m4 serial 8
+dnl Copyright (C) 2009-2022 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])
+])