X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Flstat.m4;h=74c78fe48a72f7852cb1ab9ad99954ca68483a60;hb=6d5b64e8b1a223481ddf2fb18fc4923ed1888a66;hp=3af1fdff073f911b28127bc1e18e9edb156fdfc5;hpb=8b03458ebe93a6e1c86c3a468aa3f2eee01e3c4c;p=gnulib.git

diff --git a/m4/lstat.m4 b/m4/lstat.m4
index 3af1fdff0..74c78fe48 100644
--- a/m4/lstat.m4
+++ b/m4/lstat.m4
@@ -1,24 +1,26 @@
-#serial 13
+# serial 19
 
-# Copyright (C) 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005 Free Software
-# Foundation, Inc.
+# Copyright (C) 1997-2001, 2003-2009 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.
 
 dnl From Jim Meyering.
-dnl Determine whether lstat has the bug that it succeeds when given the
-dnl zero-length file name argument.  The lstat from SunOS 4.1.4 and the Hurd
-dnl (as of 1998-11-01) do this.
-dnl
-dnl If it does, then define HAVE_LSTAT_EMPTY_STRING_BUG and arrange to
-dnl compile the wrapper function.
-dnl
 
 AC_DEFUN([gl_FUNC_LSTAT],
 [
-  AC_REQUIRE([AC_FUNC_LSTAT])
-  dnl Note: AC_FUNC_LSTAT does AC_LIBOBJ(lstat).
-  :
+  AC_REQUIRE([gl_SYS_STAT_H_DEFAULTS])
+  dnl If lstat does not exist, the replacement <sys/stat.h> does
+  dnl "#define lstat stat", and lstat.c does not need to be compiled.
+  AC_CHECK_FUNCS_ONCE([lstat])
+  if test $ac_cv_func_lstat = yes; then
+    AC_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK
+    dnl Note: AC_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK does AC_LIBOBJ([lstat]).
+    if test $ac_cv_func_lstat_dereferences_slashed_symlink = no; then
+      REPLACE_LSTAT=1
+    fi
+    # Prerequisites of lib/lstat.c.
+    AC_REQUIRE([AC_C_INLINE])
+  fi
 ])