Cross-compile the LLVM + clang

1.Checkout llvm/clang/compiler-rt(optional)
2.Organize the directory like:

llvm/
    /tools/clang
    /projects/compiler-rt

3.Run the script below in Terminal.

$ mkdir build
$ cd build
$ cmake -DCMAKE_BUILD_TYPE:String=Release ../obfuscator/
$ make -j5 //5 is the compiler threads, make it bigger to compile faster.