|  | 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" | 
|  | } else { | 
|  | mac_sdk_path = "/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk" | 
|  | } |