diff --git a/ChangeLog b/ChangeLog
index 4e2501f..bac2206 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2014-02-12  Urs Janssen  <urs@akk.org>
+
+	* config.guess (Linux|GNU|GNU/*): Strip extraneous whitespace
+	inserted by the preprocessor (eg, pgcc -E).
+
 2014-01-25  Ben Elliston  <bje@gnu.org>
 
 	* config.guess: Remove check for /usr/apollo directory.
diff --git a/config.guess b/config.guess
index 92fe65f..72625d4 100755
--- a/config.guess
+++ b/config.guess
@@ -2,7 +2,7 @@
 # Attempt to guess a canonical system name.
 #   Copyright 1992-2014 Free Software Foundation, Inc.
 
-timestamp='2014-01-25'
+timestamp='2014-02-12'
 
 # This file is free software; you can redistribute it and/or modify it
 # under the terms of the GNU General Public License as published by
@@ -149,7 +149,7 @@ Linux|GNU|GNU/*)
 	LIBC=gnu
 	#endif
 	EOF
-	eval `$CC_FOR_BUILD -E $dummy.c 2>/dev/null | grep '^LIBC'`
+	eval `$CC_FOR_BUILD -E $dummy.c 2>/dev/null | grep '^LIBC' | sed 's, ,,g'`
 	;;
 esac