- OSXCross: OS X cross toolchain for linux - After finishing ./build.sh you can optionally build gcc as well. Don't forget to run "source ~/.profile" after adding the target to your .bashrc or .profile, or simply start a new shell session. Then make sure you have got the build dependencies for gcc installed on your system, see: http://gcc.gnu.org/install/prerequisites.html On debian like systems you can run 'apt-get build-dep gcc' to install them. After this edit GCC_VERSION and so on build_gcc.sh, so it fits your requirements, then finally run ./build_gcc.sh to start building gcc. If everything went well, then you'll have "x86_64-apple-darwinXX-gcc, i386-apple-darwinXX-g++" and so on available as compiler.