X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fd-ino.m4;h=d093b3ff12f66936f84b9b54d887feb9c5961970;hb=533101a268dc5015a140ff4695d8eeb04fbe57b6;hp=03087bf5e758230557fc650779b1f035eee39342;hpb=1602f0afed21be664fcf5c42d59db07cc22c56d6;p=gnulib.git

diff --git a/m4/d-ino.m4 b/m4/d-ino.m4
index 03087bf5e..d093b3ff1 100644
--- a/m4/d-ino.m4
+++ b/m4/d-ino.m4
@@ -1,11 +1,11 @@
-# serial 12
+# serial 14
 
 dnl From Jim Meyering.
 dnl
 dnl Check whether struct dirent has a member named d_ino.
 dnl
 
-# Copyright (C) 1997, 1999-2001, 2003-2004, 2006-2007, 2009-2012 Free Software
+# Copyright (C) 1997, 1999-2001, 2003-2004, 2006-2007, 2009-2013 Free Software
 # Foundation, Inc.
 
 # This file is free software; the Free Software Foundation
@@ -13,7 +13,8 @@ dnl
 # with or without modifications, as long as this notice is preserved.
 
 AC_DEFUN([gl_CHECK_TYPE_STRUCT_DIRENT_D_INO],
-  [AC_CACHE_CHECK([for d_ino member in directory struct],
+  [AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+   AC_CACHE_CHECK([for d_ino member in directory struct],
                   gl_cv_struct_dirent_d_ino,
      [AC_RUN_IFELSE(
         [AC_LANG_PROGRAM(
@@ -29,7 +30,7 @@ AC_DEFUN([gl_CHECK_TYPE_STRUCT_DIRENT_D_INO],
              e = readdir (dp);
              if (! e)
                return 2;
-             if (stat (e->d_name, &st) != 0)
+             if (lstat (e->d_name, &st) != 0)
                return 3;
              if (e->d_ino != st.st_ino)
                return 4;
@@ -37,10 +38,18 @@ AC_DEFUN([gl_CHECK_TYPE_STRUCT_DIRENT_D_INO],
            ]])],
            [gl_cv_struct_dirent_d_ino=yes],
            [gl_cv_struct_dirent_d_ino=no],
-           [gl_cv_struct_dirent_d_ino=no])])
-   if test $gl_cv_struct_dirent_d_ino = yes; then
-     AC_DEFINE([D_INO_IN_DIRENT], [1],
-       [Define if struct dirent has a member d_ino that actually works.])
-   fi
+           [case "$host_os" in
+                           # Guess yes on glibc systems with Linux kernel.
+              linux*-gnu*) gl_cv_struct_dirent_d_ino="guessing yes" ;;
+                           # If we don't know, assume the worst.
+              *)           gl_cv_struct_dirent_d_ino="guessing no" ;;
+            esac
+           ])])
+   case "$gl_cv_struct_dirent_d_ino" in
+     *yes)
+       AC_DEFINE([D_INO_IN_DIRENT], [1],
+         [Define if struct dirent has a member d_ino that actually works.])
+       ;;
+   esac
   ]
 )