In InstrProfilingPlatformOther.c, there are the following functions:

COMPILER_RT_VISIBILITY char *__llvm_profile_begin_bitmap(void) { return BitmapFirst; } COMPILER_RT_VISIBILITY char *__llvm_profile_end_bitmap(void) { return BitmapLast; }

However, BitmapFirst and BitmapLast are nowhere defined, causing compiler error in my case. Pinging @evodius96 because it seems he introduced this code, I am not experienced enough to fix it.