skia2/build_overrides/build.gni

mac_sdk_min_build_override           = "10.10"
mac_deployment_target_build_override = "10.7"
GN What we've got here is a little GN MVP. It's lacking any knobs and doesn't yet build anything but libskia, zlib, libpng, and libjpeg-turbo. I've been hopping back and forth between Linux at work and Mac at home. These seem to be at least partially working, enough to build and run cmake/example.cpp. The xcode backend seems to work. From here, we can start exploring how to handle other backends (cmake,Android make, Google3). There are a couple things I want to try: - add another backend like vs or xcode to GN directly - intercept via a custom toolchain - reverse from ninja -t commands That last option seems kind of fun. This tries to piggyback on Chrome's GN setup as much as possible. Chrome's got quite a lot figured out, and we're basically required to do this if we want to have a single GN build system shareable by Chrome, our bots, and other clients. This pulls in some new DEPS: - build: Chrome's GN configuration, and much more - buildtools: hashes for gn binary, pulled via hooks - tools/clang: hashes for Chrome's clang, pulled via hooks into third_party/llvm-build It additionally symlinks tools/gyp to third_party/externals/gyp. GN pulls some stuff from tools/gyp on Mac. Have not yet tried building for Windows, Android, or iOS. BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2087593002 Committed: https://skia.googlesource.com/skia/+/1d8de594f126b9a80bd8f8fa2005e90faf3b5b17 Review-Url: https://codereview.chromium.org/2087593002 2016-06-23 17:29:30 +00:00			`mac_sdk_min_build_override = "10.10"`
			`mac_deployment_target_build_override = "10.7"`