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# serial 4
# See if we need to provide fdopendir.
dnl Copyright (C) 2009-2010 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.
# Written by Eric Blake.
AC_DEFUN([gl_FUNC_FDOPENDIR],
[
AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
dnl FreeBSD 7.3 has the function, but failed to declare it.
AC_CHECK_DECLS([fdopendir], [], [HAVE_DECL_FDOPENDIR=0], [[
#include <dirent.h>
]])
AC_CHECK_FUNCS_ONCE([fdopendir])
if test $ac_cv_func_fdopendir = no; then
AC_LIBOBJ([openat-proc])
AC_LIBOBJ([fdopendir])
gl_REPLACE_DIRENT_H
HAVE_FDOPENDIR=0
else
AC_CACHE_CHECK([whether fdopendir works],
[gl_cv_func_fdopendir_works],
[AC_RUN_IFELSE([AC_LANG_PROGRAM([[
#include <dirent.h>
#include <fcntl.h>
#if !HAVE_DECL_FDOPENDIR
extern DIR *fdopendir (int);
#endif
]], [int fd = open ("conftest.c", O_RDONLY);
if (fd < 0) return 2;
return !!fdopendir (fd);])],
[gl_cv_func_fdopendir_works=yes],
[gl_cv_func_fdopendir_works=no],
[gl_cv_func_fdopendir_works="guessing no"])])
if test "$gl_cv_func_fdopendir_works" != yes; then
REPLACE_FDOPENDIR=1
gl_REPLACE_DIRENT_H
AC_LIBOBJ([fdopendir])
fi
fi
])
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