search for: d19742

Lei, The issues that you’re reporting here are on my mind. I have a patch out for review now (http://reviews.llvm.org/D19742 <http://reviews.llvm.org/D19742>) that allows building builtins without a full toolchain. One of the next steps after this is to support alternate sysroots for different targets, and to identify builtins that need target headers so that they can be excluded in cases where target headers are...

> On May 5, 2016, at 12:11 PM, Renato Golin <renato.golin at linaro.org> wrote: > > On 5 May 2016 at 19:33, Chris Bieneman via llvm-dev > <llvm-dev at lists.llvm.org> wrote: >> I have a patch out for review now (http://reviews.llvm.org/D19742) that >> allows building builtins without a full toolchain. > > Nice! Does that also allow you to build multiple targets? No. The plan is to have compiler-rt support one target per-configuration and to have LLVM & Clang’s build systems manage configuring compiler-rt for each targe...

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