Attached is a new pbcompspec which works with Xcode 6.1, this goes in
/Library/Application Support/Developer/Shared/Xcode/Specifications/Cocotron-1.0-Windows-i386-gcc-4.3.1.pbcompspec
I have updated/fixed the master branch for the appropriate build settings too. If you have the existing tools installed this should now work with Xcode 5 and 6. Let me know if you have any problems.