X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;ds=sidebyside;f=m4%2Freadlink.m4;h=1c347a0c9aea01c66c530eb37127403b88ed8847;hb=74f8d5870e0fd68701ff379775a5f0a439bfb5b3;hp=ec53e14db86a6316fab7be3c1d6d94c40d07b43d;hpb=2b2d00f3641023f822d6f0aa981b1570de2196ce;p=gnulib.git

diff --git a/m4/readlink.m4 b/m4/readlink.m4
index ec53e14db..1c347a0c9 100644
--- a/m4/readlink.m4
+++ b/m4/readlink.m4
@@ -1,20 +1,27 @@
-# readlink.m4 serial 2
-dnl Copyright (C) 2003 Free Software Foundation, Inc.
-dnl This file is free software, distributed under the terms of the GNU
-dnl General Public License.  As a special exception to the GNU General
-dnl Public License, this file may be distributed as part of a program
-dnl that contains a configuration script generated by Autoconf, under
-dnl the same distribution terms as the rest of that program.
+# readlink.m4 serial 4
+dnl Copyright (C) 2003, 2007 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.
 
 AC_DEFUN([gl_FUNC_READLINK],
 [
-  AC_CHECK_FUNCS(readlink)
+  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+  AC_CHECK_FUNCS_ONCE([readlink])
   if test $ac_cv_func_readlink = no; then
+    HAVE_READLINK=0
     AC_LIBOBJ(readlink)
     gl_PREREQ_READLINK
   fi
 ])
 
+# Like gl_FUNC_READLINK, except prepare for separate compilation (no AC_LIBOBJ).
+AC_DEFUN([gl_FUNC_READLINK_SEPARATE],
+[
+  AC_CHECK_FUNCS_ONCE([readlink])
+  gl_PREREQ_READLINK
+])
+
 # Prerequisites of lib/readlink.c.
 AC_DEFUN([gl_PREREQ_READLINK],
 [