I have yet to complete a build on the PC. ==Problems==When I installed cygwin, I left the line endings as UNIX type (recommended) - and when I tried to check out I got the following error[http:===The error (1) === C:\proj\mozilla>make -f client.mk checkout cvs checkout: warning: failed to open /home/Lukas/crashopensource.cvspass for reading: No such file or directory /cygdrive/c/proj/mozilla/wordpress.mozconfig: line 2: com/cygdrive2007/c09/proj14/mozilla/browser/co : No such file or directory client.mk:517: /cygdrive/c/proj/mozilla/.mozconfig.mk: No such file or directory make: *** No rule to make target `/cygdrive/c/proj/mozilla/.mozconfig.mk'. Stop .  ===The solution (1) === in C:\proj\mozilla dos2unix .mozconfig  This cleared everything catching-up, and then I was able to begin downloading the source code. ===The error (2) ===  SO, after an hour and a half of compiling, I get this at the end:  <code>nsFieldSetFrame.cpp nsFileControlFrame.cpp Building deps for /cygdrive/c/proj/mozilla/layout/forms/nsFileControlFrame.cpp make[5]: *** [nsFileControlFrame.obj] Error 5 make[5]: Leaving directory `/cygdrive/c/proj/mozilla/firefox-objdir/layout/forms ' make[4]: *** [libs] Error 2 make[4]: Leaving directory `/cygdrive/c/proj/mozilla/with-firefox-objdir/layout' make[3]: *** [libs_tier_gecko] Error 2 make[3]: Leaving directory `/cygdrive/c/proj/mozilla/firefox-objdir' make[2]: *** [tier_gecko] Error 2 make[2]: Leaving directory `/cygdrive/c/proj/mozilla/firefox-objdir' make[1]: *** [default] Error 2 make[1]: Leaving directory `/cygdrive/c/proj/mozilla/firefox-objdir' make: *** [build] Error 2</code> ===The solution (2) === To be continued... Lukas -- I'd recommend you dump cygwin and use [http://benjamin.smedbergs.us/see my blog/2007-01-12/mozillabuild-rc1/ bsmedberg's MozillaBuild] environment based on msys. ([[User:David.humphrey|David.humphrey]] 09:26, 22 February 2007 (EST))