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Hi. I'm trying to use Clang/LLVM as a cross-compiling toolchain. In previous version of LLVM with the old configure/Makefile building system, I'm able to build Clang/LLVM for target architecture with the host GCC firstly and then use the generated cross compiler to compile the compiler-rt project, and, consequently, I can get a cross compiler as well as the compiler-rt library. However,