[CMake] How to find out the compiler directory?

[Steven Van Ingelgem]

I want to use "MASM" (ml64.exe on VS2005) to compile some files, but
how can I find it's directory?
If I know where the "cl.exe" is located it's the same directory +
"/x86_64", but the variable "CMAKE_C_COMPILER" only contains "cl"
(which is not in the path!).

What would my options be here?


Thanks!