I was on Mavericks this morning, attempting to compile TextMate (latest git HEAD) But I suspect its no longer possible since it appears to require a more recent version of XCode - error in one function due to 'forced copy in constructor'. It was related to a parents = {} parameter, I didn't dig too deeply. Not to worry, it gave me a good reason to upgrade to El Capitan. So I've done that, and updated all the homebrew packages, aswell as Xcode The github states that hg (mercurial) is optional, but I installed it anyway to allow the unit tests to run. Unfortunately I'm still having problems ----- environment [carpii@imac:~/dev/textmate]$ clang++ --version Apple LLVM version 7.3.0 (clang-703.0.31) Target: x86_64-apple-darwin15.5.0 Thread model: posix InstalledDir: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin [carpii@imac:~/dev/textmate]$ clang --version Apple LLVM version 7.3.0 (clang-703.0.31) Target: x86_64-apple-darwin15.5.0 Thread model: posix InstalledDir: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin [carpii@imac:~/dev/textmate]$ xcodebuild -version Xcode 7.3.1 Build version 7D1014 [carpii@imac:~/dev/textmate]$ sw_vers -productVersion 10.11.5 ------- compilation [carpii@imac:~/dev/textmate]$ ninja -t clean Cleaning... 515 files. [carpii@imac:~/dev/textmate]$ ninja io [1/1] Generate ‘build.ninja’… [109/109] Run test ‘/Users/carpii/build/TextMate/Frameworks/io/test_io’… [carpii@imac:~/dev/textmate]$ ninja TextMate [229/1107] Run test ‘/Users/carpii/build/TextMate/Frameworks/scm/test_scm’… FAILED: /Users/carpii/build/TextMate/Frameworks/scm/test_scm && touch /Users/carpii/build/TextMate/Frameworks/scm/test_scm.run /bin/sh: line 1: 7210 Segmentation fault: 11 /Users/carpii/build/TextMate/Frameworks/scm/test_scm [229/1107] Compile ‘Frameworks/file/src/open.cc’… ninja: build stopped: subcommand failed. Any ideas please?