Fix typo in last commit.

[pspp] / m4 / dirfd.m4

diff --git a/m4/dirfd.m4 b/m4/dirfd.m4
index db2a9a0eda6a7533c91fe6006c071238457a6e0c..baab4dddadad246ee914801d05ff2dbc8a5f9f20 100644 (file)
--- a/m4/dirfd.m4
+++ b/m4/dirfd.m4
@@ -1,8 +1,9 @@
-#serial 10
+#serial 15   -*- Autoconf -*-
 
 dnl Find out how to get the file descriptor associated with an open DIR*.
 
-# Copyright (C) 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+# Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2008 Free Software
+# Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
@@ -11,35 +12,29 @@ dnl From Jim Meyering
 
 AC_DEFUN([gl_FUNC_DIRFD],
 [
-  AC_LIBSOURCES([dirfd.c, dirfd.h])
+  AC_REQUIRE([gl_DIRENT_H_DEFAULTS])
+  gl_REPLACE_DIRENT_H
+
+  dnl Persuade glibc <dirent.h> to declare dirfd().
+  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
 
   dnl Work around a bug of AC_EGREP_CPP in autoconf-2.57.
   AC_REQUIRE([AC_PROG_CPP])
   AC_REQUIRE([AC_PROG_EGREP])
 
-  AC_HEADER_DIRENT
-  dirfd_headers='
-#if HAVE_DIRENT_H
-# include <dirent.h>
-#else /* not HAVE_DIRENT_H */
-# define dirent direct
-# if HAVE_SYS_NDIR_H
-#  include <sys/ndir.h>
-# endif /* HAVE_SYS_NDIR_H */
-# if HAVE_SYS_DIR_H
-#  include <sys/dir.h>
-# endif /* HAVE_SYS_DIR_H */
-# if HAVE_NDIR_H
-#  include <ndir.h>
-# endif /* HAVE_NDIR_H */
-#endif /* HAVE_DIRENT_H */
-'
   AC_CHECK_FUNCS(dirfd)
-  AC_CHECK_DECLS([dirfd], , , $dirfd_headers)
+  AC_CHECK_DECLS([dirfd], , ,
+    [#include <sys/types.h>
+     #include <dirent.h>])
+  if test $ac_cv_have_decl_dirfd = no; then
+    HAVE_DECL_DIRFD=0
+  fi
 
   AC_CACHE_CHECK([whether dirfd is a macro],
     gl_cv_func_dirfd_macro,
-    [AC_EGREP_CPP([dirent_header_defines_dirfd], [$dirfd_headers
+    [AC_EGREP_CPP([dirent_header_defines_dirfd], [
+#include <sys/types.h>
+#include <dirent.h>
 #ifdef dirfd
  dirent_header_defines_dirfd
 #endif],
@@ -55,13 +50,13 @@ AC_DEFUN([gl_FUNC_DIRFD],
              [how to get the file descriptor associated with an open DIR*],
                   gl_cv_sys_dir_fd_member_name,
       [
-        dirfd_save_CFLAGS=$CFLAGS
+       dirfd_save_CFLAGS=$CFLAGS
        for ac_expr in d_fd dd_fd; do
 
          CFLAGS="$CFLAGS -DDIR_FD_MEMBER_NAME=$ac_expr"
          AC_TRY_COMPILE(
-           [$dirfd_headers
-           ],
+           [#include <sys/types.h>
+            #include <dirent.h>],
            [DIR *dir_p = opendir("."); (void) dir_p->DIR_FD_MEMBER_NAME;],
            dir_fd_found=yes
          )