X-Git-Url: http://git.hcoop.net/bpt/guile.git/blobdiff_plain/57692c07427cb2b3f193df2e998e30cf7616e567..cf512e32687b41690ab436f13322d7a9e00094b7:/m4/glibc21.m4

diff --git a/m4/glibc21.m4 b/m4/glibc21.m4
index 93fbf4745..ab58b7121 100644
--- a/m4/glibc21.m4
+++ b/m4/glibc21.m4
@@ -1,27 +1,31 @@
-# glibc21.m4 serial 4
-dnl Copyright (C) 2000-2002, 2004, 2008 Free Software Foundation, Inc.
+# glibc21.m4 serial 5
+dnl Copyright (C) 2000-2002, 2004, 2008, 2010-2014 Free Software Foundation,
+dnl 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.
 
-# Test for the GNU C Library, version 2.1 or newer.
+# Test for the GNU C Library, version 2.1 or newer, or uClibc.
 # From Bruno Haible.
 
 AC_DEFUN([gl_GLIBC21],
   [
-    AC_CACHE_CHECK([whether we are using the GNU C Library 2.1 or newer],
+    AC_CACHE_CHECK([whether we are using the GNU C Library >= 2.1 or uClibc],
       [ac_cv_gnu_library_2_1],
-      [AC_EGREP_CPP([Lucky GNU user],
-	[
+      [AC_EGREP_CPP([Lucky],
+        [
 #include <features.h>
 #ifdef __GNU_LIBRARY__
  #if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) || (__GLIBC__ > 2)
   Lucky GNU user
  #endif
 #endif
-	],
-	[ac_cv_gnu_library_2_1=yes],
-	[ac_cv_gnu_library_2_1=no])
+#ifdef __UCLIBC__
+ Lucky user
+#endif
+        ],
+        [ac_cv_gnu_library_2_1=yes],
+        [ac_cv_gnu_library_2_1=no])
       ]
     )
     AC_SUBST([GLIBC21])