Use lto.h from clang+llvm not libtapi. The later is older, and comes bundled with the libtapi repo. Copy libLTO.so when building with FORCE_USE_SYSTEM_CLANG.
Use lto.h from clang+llvm not libtapi. The later is older, and comes bundled with the libtapi repo. Copy libLTO.so when building with FORCE_USE_SYSTEM_CLANG.