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# glob_h.m4 serial 9
dnl Copyright (C) 2018-2024 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_GLOB_H],
[
AC_REQUIRE([gl_GLOB_H_DEFAULTS])
m4_ifdef([gl_ANSI_CXX], [AC_REQUIRE([gl_ANSI_CXX])])
AC_REQUIRE([AC_C_RESTRICT])
AC_CHECK_HEADERS_ONCE([glob.h])
gl_CHECK_NEXT_HEADERS([glob.h])
if test $ac_cv_header_glob_h = yes; then
HAVE_GLOB_H=1
else
HAVE_GLOB_H=0
fi
AC_SUBST([HAVE_GLOB_H])
m4_ifdef([gl_POSIXCHECK],
[GL_GENERATE_GLOB_H=true],
[GL_GENERATE_GLOB_H=false
if m4_ifdef([gl_ANSI_CXX], [test "$CXX" != no], [false]); then
dnl Override <glob.h> always, to support the C++ GNULIB_NAMESPACE.
GL_GENERATE_GLOB_H=true
else
if test $ac_cv_header_glob_h != yes; then
dnl Provide a substitute <glob.h> file.
GL_GENERATE_GLOB_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 <glob.h>
]],
[glob globfree glob_pattern_p])
])
dnl Unconditionally enables the replacement of <glob.h>.
AC_DEFUN([gl_REPLACE_GLOB_H],
[
gl_GLOB_H_REQUIRE_DEFAULTS
GL_GENERATE_GLOB_H=true
])
# gl_GLOB_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_GLOB_MODULE_INDICATOR],
[
dnl Ensure to expand the default settings once only.
gl_GLOB_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_GLOB_H_REQUIRE_DEFAULTS],
[
m4_defun(GL_MODULE_INDICATOR_PREFIX[_GLOB_H_MODULE_INDICATOR_DEFAULTS], [
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GLOB])
])
m4_require(GL_MODULE_INDICATOR_PREFIX[_GLOB_H_MODULE_INDICATOR_DEFAULTS])
AC_REQUIRE([gl_GLOB_H_DEFAULTS])
])
AC_DEFUN([gl_GLOB_H_DEFAULTS],
[
dnl Assume POSIX and GNU behavior unless another module says otherwise.
HAVE_GLOB=1; AC_SUBST([HAVE_GLOB])
HAVE_GLOB_PATTERN_P=1; AC_SUBST([HAVE_GLOB_PATTERN_P])
REPLACE_GLOB=0; AC_SUBST([REPLACE_GLOB])
REPLACE_GLOB_PATTERN_P=0; AC_SUBST([REPLACE_GLOB_PATTERN_P])
])
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