[CMake] Fw: cmake build script for linux-to-osx gcc/g++/gfortran cross-compiler toolchain

[Simon Triebenbacher]

UPDATE: Some more links concerned with Linux-to-OSX cross-compiler toolchains:

- Darwin/Mac OS X Cross-Compiler for Linux
  http://ranger.befunk.com/fink/darwin-cross/

- A cross compiler toolchain targeting OS X/Darwin
  https://github.com/tatsh/xchain