--- third_party/webrtc/build/common.gypi.orig	2012-05-04 18:32:52.126703414 +0200
+++ third_party/webrtc/build/common.gypi	2012-05-04 18:35:14.186709933 +0200
@@ -98,7 +98,7 @@
     'defines': [
       # TODO(leozwang): Most of team use git-svn, need to add
       # git-svn support as well.
-      'WEBRTC_SVNREVISION="<!(svnversion -n)"',
+      'WEBRTC_SVNREVISION="<!(svnversion -n 2>/dev/null || echo -n 0)"',
     ],
     'conditions': [
       ['build_with_chromium==1', {