Operation not permitted - compiling

This is what I want to do:
Compiling mozilla with calendar support on Mac OS X.3,
I installed everything as stated on the mozilla.org web site for 
building on mac os.

During the make I get the following error:

Creating .deps
echo "#define DEPENDENT_LIBS \"libgkgfx.dylib\", \"libxpcom.dylib\", 
\"libplds4.dylib\", \"libplc4.dylib\", \"libnspr4.dylib\", 
\"libpthread.dylib\", " > dependentLibs.h
rsync -a --exclude .DS_Store --exclude "CVS/" ./DefaultPlugin.pbproj .
ln -fs ./English.lproj
ln: ./English.lproj: Operation not permitted
make[3]: *** [export] Error 1
make[2]: *** [export] Error 2
make[1]: *** [tier_9] Error 2
make: *** [default] Error 2

This happens as root too. What can I do?