Clang 简单使用

2018-05-23

technology

iOS

clang -rewrite-objc: 将OC代码转成 C/C++

1. 最基本的

clang -rewrite-objc main.m

2.指定真机:

xcrun -sdk iphoneos clang -rewrite-objc main.m

指定模拟器:

xcrun -sdk iphonesimulator clang -rewrite-objc main.m

指定特定版本的SDK

xcrun -sdk iphonesimulator11.3 clang -rewrite-objc main.m

NOTE: 使用 xcodebuild -showsdks 可以查看系统的SDK。

clang ❯ xcodebuild -showsdks
iOS SDKs:
        iOS 11.3                        -sdk iphoneos11.3
iOS Simulator SDKs:
        Simulator - iOS 11.3            -sdk iphonesimulator11.3
macOS SDKs:
        macOS 10.13                     -sdk macosx10.13
tvOS SDKs:
        tvOS 11.3                       -sdk appletvos11.3
tvOS Simulator SDKs:
        Simulator - tvOS 11.3           -sdk appletvsimulator11.3
watchOS SDKs:
        watchOS 4.3                     -sdk watchos4.3
watchOS Simulator SDKs:
        Simulator - watchOS 4.3         -sdk watchsimulator4.3

指定 framework

使用 -F 来指定引入的framework

xcrun -sdk iphonesimulator11.3 clang -rewrite-objc –F  ${framework.path}  main.m