bitcode

Open alexcohn opened this issue 4 years ago • 0 comments

Apple requires bitcode for tvOS builds, and strongly encourages bitcode for iOS builds. Also, the compiler has recently added a check in clang/lib/Driver/ToolChains/Clang.cpp, which does not allow -mllvm in CFLAGS when -fembed-bitcode is present.

This didn't happen before, on llvm-9.0.1 (but that was not compatible with the modern Xcode).

I tried to simply remove the error check for mllvm from Clang.cpp, but this resulted in lots of suspicious warnings while compiling and my iOS code, I tried to simply hardcode -mllvm -bcf -mllvm -sub -mllvm -fla -mllvm -sobf in the compiler. Now, build passes smoothly.

Is there a better way to work around this problem? Also, I am not sure (have not tried) that the bitcode that is produced after my 'fix' is valid.

Dec 19 '21 19:12 alexcohn