darwin-ppc - MacOS X powerpc darwin-x86 - MacOS X intel freebsd-64 - FreeBSD 6.x, x86_64 freebsd-x86 - FreeBSD 4.x, x86 linux-64 - Any GNU/Linux distribution, x86_64 linux-arm - Any GNU/Linux distribution, arm linux-ppc - Any GNU/Linux distribution, powerpc linux-x86 - Any GNU/Linux distribution, x86 mingw - Windows x86