[LLVMdev] How to Cross Compile libcompiler_rt Static Library?

[Chao Yan]

Hi,

I've cross-compiled musl-libc to arm binaries with clang. It needs
functions from static runtime library "libcompiler_rt.a". I tried to build
compile_rt outside the llvm source tree. Using command like "make
clang_linux", I can easily build "libcompiler_rt.a" for my host machine,
which is X86_64. But how can I *cross-compile* the compiler_rt runtime
libraries?

According to the following websites:
https://www.bountysource.com/issues/5139020-linux-arm-platform-support-missing-for-compiler-rt-cross-compiler

https://www.bountysource.com/issues/5139002-addresssanitizer-tests-fail-with-dllvm_targets_to_build-arm

It seems that the makefile does not support non-X86 targets. Someone tried
cmake failed as well. Any suggestions?

Thanks,
Chao
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