Walter Lenk wrote: > These applications are roughly similar in size, > but they differ quite significantly in FBtoC compile times. App #2 > (StudyLog Master) takes more than four times the time to compile > then app #1 (Mirror Game) does. > > The question is why? > FBtoC: translating Mirror Game .¼ > FBtoC: translation time: 1.26 s > FBtoC: copying files > FBtoC: copying resources > FBtoC: found Info.plist > FBtoC: copy time: 0.12 s > FBtoC: using precompiled header > FBtoC: linking > FBtoC: compile+link time: 1.07 s > FBtoC: total time: 2.46 s > FBtoC: launching Mirror Game Control.app > FBtoC: done This app was built previously, and you did not change the source code or settings, or delete the build_temp folder. FBtoC sees that it can omit compilation of the C code. > FBtoC: translating StudyLog Master . ¼ > FBtoC: translation time: 1.38 s > FBtoC: copying files > FBtoC: copying resources > FBtoC: found Info.plist > FBtoC: copy time: 0.15 s > FBtoC: using precompiled header > FBtoC: compiling _0_TranslatedRuntime.c > FBtoC: compiling _1_TranslatedRuntime.c > FBtoC: compiling _2_StudyLog_Ma...StudyLog_Ma.c > FBtoC: compiling _3_StudyLog_Mast,StudyLog_Mas.c > FBtoC: compiling _4_StudyLog_Mast,StudyLog_Mas.c > FBtoC: compiling _5_StudyLog_Mast,StudyLog_Mas.c > FBtoC: compiling _6_StudyLog_Master_r_Results..c > FBtoC: compiling _7_StudyLog_Master_s_Script.I.c > FBtoC: compiling _8_StudyLog,StudyLog,StudyLog.c > FBtoC: compiling _9_StudyLog,Study,Study,Study.c > FBtoC: linking > FBtoC: compile+link time: 8.92 s > FBtoC: total time: 10.46 s > FBtoC: launching StudyLog Master.app > FBtoC: done Most likely you changed the settings since this app was last built, which forces FBtoC to recompile all the C code. Robert P.