For more information, this is the error I get.
client.mk:121: *** This source tree appears to have Windows-style line endings. To convert it to Unix-style line endings, run "python mozilla/build/win32/mozilla-dos2unix.py".
The python code will not work because it's trying to look for a CVS directory that does not exist in the mozilla-central folder.
we should file a bug on this and get the script + error message fixed. Ask on irc for tips on how to do this, or we can do on Tuesday. In the meantime, make sure you are cloning your repo from git , and it shouldn 't do this .