how to compile the psp program with clang

Hello clang Devs:
Now, I read the clang source files, and found that there is psp
information in
Targets.cpp(http://clang.llvm.org/doxygen/Targets_8cpp_source.html).
I wrote some psp applications with psp-g++ before on linux. Now I am so
intresting in doing it on Mac OS.I know the ps4 use the clang instead of
gcc to build games. So if anybody know how to setup the clang-psp dev
environment on mac.THX!

Bugshan
thx