| 1 | # fnmatch_h.m4 serial 7
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| 2 | dnl Copyright (C) 2009-2021 Free Software Foundation, Inc.
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| 3 | dnl This file is free software; the Free Software Foundation
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| 4 | dnl gives unlimited permission to copy and/or distribute it,
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| 5 | dnl with or without modifications, as long as this notice is preserved.
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| 6 |
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| 7 | dnl From Bruno Haible.
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| 8 |
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| 9 | AC_DEFUN_ONCE([gl_FNMATCH_H],
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| 10 | [
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| 11 | AC_REQUIRE([gl_FNMATCH_H_DEFAULTS])
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| 12 | m4_ifdef([gl_ANSI_CXX], [AC_REQUIRE([gl_ANSI_CXX])])
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| 13 | AC_CHECK_HEADERS_ONCE([fnmatch.h])
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| 14 | gl_CHECK_NEXT_HEADERS([fnmatch.h])
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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 | if test $ac_cv_header_fnmatch_h = yes; then
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| 23 | HAVE_FNMATCH_H=1
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| 24 | else
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| 25 | HAVE_FNMATCH_H=0
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| 26 | fi
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| 27 | AC_SUBST([HAVE_FNMATCH_H])
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| 28 |
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| 29 | m4_ifdef([gl_POSIXCHECK],
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| 30 | [FNMATCH_H=fnmatch.h],
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| 31 | [FNMATCH_H=''
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| 32 | if m4_ifdef([gl_ANSI_CXX], [test "$CXX" != no], [false]); then
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| 33 | dnl Override <fnmatch.h> always, to support the C++ GNULIB_NAMESPACE.
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| 34 | FNMATCH_H=fnmatch.h
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| 35 | else
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| 36 | if test $ac_cv_header_fnmatch_h != yes; then
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| 37 | dnl Provide a substitute <fnmatch.h> file.
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| 38 | FNMATCH_H=fnmatch.h
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| 39 | fi
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| 40 | fi
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| 41 | ])
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| 42 | AC_SUBST([FNMATCH_H])
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| 43 | AM_CONDITIONAL([GL_GENERATE_FNMATCH_H], [test -n "$FNMATCH_H"])
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| 44 |
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| 45 | dnl Check for declarations of anything we want to poison if the
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| 46 | dnl corresponding gnulib module is not in use.
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| 47 | gl_WARN_ON_USE_PREPARE([[#include <fnmatch.h>
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| 48 | ]],
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| 49 | [fnmatch])
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| 50 | ])
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| 51 |
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| 52 | dnl Unconditionally enables the replacement of <fnmatch.h>.
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| 53 | AC_DEFUN([gl_REPLACE_FNMATCH_H],
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| 54 | [
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| 55 | gl_FNMATCH_H_REQUIRE_DEFAULTS
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| 56 | FNMATCH_H='fnmatch.h'
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| 57 | AM_CONDITIONAL([GL_GENERATE_FNMATCH_H], [test -n "$FNMATCH_H"])
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| 58 | ])
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| 59 |
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| 60 | # gl_FNMATCH_MODULE_INDICATOR([modulename])
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| 61 | # sets the shell variable that indicates the presence of the given module
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| 62 | # to a C preprocessor expression that will evaluate to 1.
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| 63 | # This macro invocation must not occur in macros that are AC_REQUIREd.
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| 64 | AC_DEFUN([gl_FNMATCH_MODULE_INDICATOR],
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| 65 | [
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| 66 | dnl Ensure to expand the default settings once only.
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| 67 | gl_FNMATCH_H_REQUIRE_DEFAULTS
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| 68 | gl_MODULE_INDICATOR_SET_VARIABLE([$1])
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| 69 | dnl Define it also as a C macro, for the benefit of the unit tests.
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| 70 | gl_MODULE_INDICATOR_FOR_TESTS([$1])
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| 71 | ])
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| 72 |
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| 73 | # Initializes the default values for AC_SUBSTed shell variables.
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| 74 | # This macro must not be AC_REQUIREd. It must only be invoked, and only
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| 75 | # outside of macros or in macros that are not AC_REQUIREd.
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| 76 | AC_DEFUN([gl_FNMATCH_H_REQUIRE_DEFAULTS],
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| 77 | [
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| 78 | m4_defun(GL_MODULE_INDICATOR_PREFIX[_FNMATCH_H_MODULE_INDICATOR_DEFAULTS], [
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| 79 | gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FNMATCH])
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| 80 | ])
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| 81 | m4_require(GL_MODULE_INDICATOR_PREFIX[_FNMATCH_H_MODULE_INDICATOR_DEFAULTS])
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| 82 | AC_REQUIRE([gl_FNMATCH_H_DEFAULTS])
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| 83 | ])
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| 84 |
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| 85 | AC_DEFUN([gl_FNMATCH_H_DEFAULTS],
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| 86 | [
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| 87 | dnl Assume POSIX behavior unless another module says otherwise.
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| 88 | HAVE_FNMATCH=1; AC_SUBST([HAVE_FNMATCH])
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| 89 | REPLACE_FNMATCH=0; AC_SUBST([REPLACE_FNMATCH])
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| 90 | ])
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