llvm/utils/gn/build/mac_sdk.gni

import("//llvm/utils/gn/build/sysroot.gni")

have_ios_sdks = true

if (sysroot == "") {
  declare_args() {
    # Set to true if you don't have Xcode installed, but do have the commandline
    # tools.
    mac_use_commandline_tools_sdk = false
  }

  # Location of the mac sdk.
  # The correct way to do this is to call xcrun
  # (https://reviews.llvm.org/D70835), but that makes `gn gen` take twice as
  # long and almost everyone has Xcode installed.  So require that people who
  # don't have it installed set a gn arg.
  if (mac_use_commandline_tools_sdk) {
    mac_sdk_path = "/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk"

    # iOS SDKs aren't available in the commandline tools SDK.
    have_ios_sdks = false
  } else {
    mac_sdk_path = "/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk"
    ios_sdk_path = "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk"
    iossim_sdk_path = "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk"
  }
} else {
  ios_sdk_path = sysroot + "/iPhoneOS.sdk"
  iossim_sdk_path = sysroot + "/iPhoneSimulator.sdk"
  mac_sdk_path = sysroot + "/MacOSX.sdk"
}