Yes for LLVM, but Clang was made entirely while Chris Lattner was employed by Apple[1]. Before Clang you have to use LLVM GCC frontend (llvm-gcc) to compile C c

Yes for LLVM, but Clang was made entirely while Chris Lattner was employed by Apple[1]. Before Clang you have to use LLVM GCC frontend (llvm-gcc) to compile C code under LLVM, which was the default in Xcode until 5.x (although Clang was added in Xcode 4.x, I remembered it being quite unstable at the time). [1]: https://lists.llvm.org/pipermail/cfe-dev/2007-July/000000.html https://lists.llvm.org/pipermail/cfe-dev/2007-July/000000.ht... (announcement)