Use VideoToolbox.pch or follow the instructions in VideoToolbox.c to precompile VideoToolbox.h to recreate the precompiled header or headers that you'll need, since they must be produced by your version of the compiler. (If you're producing an external code resource for MATLAB then use VideoToolboxMATLAB.c instead.) Put them all pre-compiled headers in "VideoToolbox:VideoToolboxSources: Precompiled headers". Here's the naming convention that I use:
"VideoToolbox.pre" = THINK C, 68k, 2-byte int, "universal" floating point (works with or without 8881 fpu).
"VideoToolbox.68k.4i.f.pre" = CodeWarrior, 68k, 4-byte int, 12-byte double for 8881.
"VideoToolbox.68k.4i.pre" = CodeWarrior, 68k, 4-byte int, 10-byte double for no fpu.
"VideoToolbox.ppc.pre" = CodeWarrior, PowerPC, necessarily 4-byte int and 8-byte double.
"VideoToolbox.68k.N.4i.f.pre" = CodeWarrior, 68k, MPW C newlines, 4-byte int, 12-byte double for 8881.
"VideoToolbox.68k.N.4i.pre" = CodeWarrior, 68k, MPW C newlines, 4-byte int, 10-byte double for no fpu.
"VideoToolbox.ppc.N.pre" = CodeWarrior, PowerPC, MPW C newlines, 4-byte int and 8-byte double.