Compiling for PMFuzz using clang #3

I'm trying to compile a program for pmfuzz using clang, as the readme says you'd need to use PMFuzz's AFL++ version of gcc/clang. However, it appears that the included AFL++ version of afl-clang simply links to the afl-gcc binary. Is the afl-clang-fast binary modified for PMFuzz, or is using afl-gcc necessary?