命令行进入HelloWorld工程目录,执行xcodebuild命令并带上“-showBuildSettings”参数:
$xcodebuild -project HelloWorld.xcodeproj -target HelloWorld -configurationDebug -showBuildSettings > xcodebuild_showBuildSettings.txt
则xcodebuild_showBuildSettings.txt中保存了Build settings for action build and target "HelloWorld”,其中dump了所有的环境变量。