search for: dcompiler_rt_default_target_triple

This is currently a rough area in our build system, but there are two CMake options you probably need to set. (1) -DLLVM_BUILD_EXTERNAL_COMPILER_RT=On —> This option causes the build to use the just-built clang when building compiler-rt (2) -DCOMPILER_RT_DEFAULT_TARGET_ARCH=??? —> This is where you specify which architecture you want to build the compiler-rt archives and libraries for

...suggestion helps much, but there are still a few problems to build cross platform compiler-rt. > -DLLVM_BUILD_EXTERNAL_COMPILER_RT=On -> This is valid and required to force compiler-rt to be built by the just-built clang. > -DCOMPILER_RT_DEFAULT_TARGET_ARCH= -> This does not work, but -DCOMPILER_RT_DEFAULT_TARGET_TRIPLE works. > While using there two additional options, I still got errors. The build system successfully configured and built clang/LLVM but failed to configure compiler-rt due to the clang checking in compiler-rt's Cmake system. > I add x86 into LLVM_TARGET_ARCH, and this helps the just-buil...