hello_gn's Introduction

Hello GN Build Example

This project is a simple example for gn build. The build dir is ported from Chromium project, can works standalone, and be light.

Supported platforms

The example works around with:

android (armv5, arm, arm64, x86, x64)
ios (arm, arm64, x86, x64)
linux (x86, x64)
windows (x86, x64)
mac (x64)

Build

Build the project with script ./build/build.sh.

Usage:
  ./build/build.sh [target_os] [debug] [target_cpu]

  example:
    ./build/build.sh android true arm

Arguments:
  target_os   Can be one of: android, ios, linux, win, mac

  debug       Can be one of: true, false

  target_cpu  Can be one of: armv5, arm, arm64, x86, x64
                armv5   for android
                arm     for android, ios
                arm64   for android, ios
                x86     for android, ios, linux, win
                x64     for android, ios, linux, win, mac

e.g. Build for android with armeabi-v7a, debug version:

./build/build.sh android true arm

And the compiled files are outputted into dir //out/android.

Porting

You may porting the //build dir to your project, and don't miss the .gn file in root directory which may be hidden on your system!

Toolchain

The project uses the toolchains (gcc, clang, llvm, ...) in your PATH. The following conditions are required to make build/build.sh works around with the platforms:

android: Add NDK to your PATH. It uses which ndk-build to locate NDK.
ios: Add clang to your PATH. It uses which clang to locate the toolchains.
linux: Add gcc to your PATH. It uses which gcc to locate the toolchains.
win: Install Visual Studio 2019, and windows SDK with version 10.0.18362.0.
mac: Add clang to your PATH. It uses which clang to locate the toolchains.

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