::'''Missing QuickTime SDK''':{| class="fullwidth-table"|-|class="header" width="10%"||class="header" width="90%"||- |- ||<pre>In file included from /Users/Moe/proj/mozilla/widget/src/mac/nsSound.cpp:64:/Developer/Headers/FlatCarbon/Movies.h:1:33: error: QuickTime/QuickTime.h: No such file or directory/Users/Moe/proj/mozilla/widget/src/mac/nsSound.cpp:166: error: 'Movie' has not been declared/Users/Moe/proj/mozilla/widget/src/mac/nsSound.cpp:170: error: 'Movie' does not name a type/Users/Moe/proj/mozilla/widget/src/mac/nsSound.cpp: In constructor 'nsMovieSoundRequest::nsMovieSoundRequest()':.../Users/Moe/proj/mozilla/widget/src/mac/nsSound.cpp: In member function 'PRBool nsMovieSoundRequest::HaveQuickTime()':/Users/Moe/proj/mozilla/widget/src/mac/nsSound.cpp:1114: error: 'EnterMovies' was not declared in this scopemake[5]: *** [nsSound.o] Error 1make[4]: *** [libs] Error 2make[3]: *** [libs] Error 2make[2]: *** [tier_9] Error 2make[1]: *** [default] Error 2make: *** [build] Error 2</pre>|-|}  :After I added the missing SDKs I was still unable to compile and I would get the same build error message over and over again. After many build attempts I realized that the old object files that were compiled before, when I was missing the SDKs, were causing the build process to fail. The removal of the object files with in the objdir resulted it a successful build of Firefox.