| # dirent_h.m4 serial 19 |
| dnl Copyright (C) 2008-2021 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 Written by Bruno Haible. |
| |
| AC_DEFUN_ONCE([gl_DIRENT_H], |
| [ |
| dnl Ensure to expand the default settings once only, before all statements |
| dnl that occur in other macros. |
| AC_REQUIRE([gl_DIRENT_H_DEFAULTS]) |
| |
| dnl <dirent.h> is always overridden, because of GNULIB_POSIXCHECK. |
| gl_CHECK_NEXT_HEADERS([dirent.h]) |
| if test $ac_cv_header_dirent_h = yes; then |
| HAVE_DIRENT_H=1 |
| else |
| HAVE_DIRENT_H=0 |
| fi |
| AC_SUBST([HAVE_DIRENT_H]) |
| |
| 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 <dirent.h> |
| ]], [alphasort closedir dirfd fdopendir opendir readdir rewinddir scandir]) |
| ]) |
| |
| # gl_DIRENT_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_DIRENT_MODULE_INDICATOR], |
| [ |
| dnl Ensure to expand the default settings once only. |
| gl_DIRENT_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_DIRENT_H_REQUIRE_DEFAULTS], |
| [ |
| m4_defun(GL_MODULE_INDICATOR_PREFIX[_DIRENT_H_MODULE_INDICATOR_DEFAULTS], [ |
| gl_UNISTD_H_REQUIRE_DEFAULTS dnl for REPLACE_FCHDIR |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_OPENDIR]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_READDIR]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_REWINDDIR]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_CLOSEDIR]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_DIRFD]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FDOPENDIR]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SCANDIR]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ALPHASORT]) |
| ]) |
| m4_require(GL_MODULE_INDICATOR_PREFIX[_DIRENT_H_MODULE_INDICATOR_DEFAULTS]) |
| AC_REQUIRE([gl_DIRENT_H_DEFAULTS]) |
| ]) |
| |
| AC_DEFUN([gl_DIRENT_H_DEFAULTS], |
| [ |
| dnl Assume proper GNU behavior unless another module says otherwise. |
| HAVE_OPENDIR=1; AC_SUBST([HAVE_OPENDIR]) |
| HAVE_READDIR=1; AC_SUBST([HAVE_READDIR]) |
| HAVE_REWINDDIR=1; AC_SUBST([HAVE_REWINDDIR]) |
| HAVE_CLOSEDIR=1; AC_SUBST([HAVE_CLOSEDIR]) |
| HAVE_DECL_DIRFD=1; AC_SUBST([HAVE_DECL_DIRFD]) |
| HAVE_DECL_FDOPENDIR=1;AC_SUBST([HAVE_DECL_FDOPENDIR]) |
| HAVE_FDOPENDIR=1; AC_SUBST([HAVE_FDOPENDIR]) |
| HAVE_SCANDIR=1; AC_SUBST([HAVE_SCANDIR]) |
| HAVE_ALPHASORT=1; AC_SUBST([HAVE_ALPHASORT]) |
| REPLACE_OPENDIR=0; AC_SUBST([REPLACE_OPENDIR]) |
| REPLACE_CLOSEDIR=0; AC_SUBST([REPLACE_CLOSEDIR]) |
| REPLACE_DIRFD=0; AC_SUBST([REPLACE_DIRFD]) |
| REPLACE_FDOPENDIR=0; AC_SUBST([REPLACE_FDOPENDIR]) |
| ]) |