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Readme instructions for cross platform build #122

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Nov 17, 2024
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Readme instructions for cross platform build #122

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Expand Up @@ -166,6 +166,25 @@ Once WSL is setup, follow the usual Go and OpenGL installation instructions for

Finally, add `export LIBGL_ALWAYS_INDIRECT=0` to your ~/.bashrc (or equivalent) if you see an error like `Error: creating window failed: VersionUnavailable: GLX: Failed to create context: GLXBadFBConfig` when attempting to launch an OpenGL application from WSL.

## Cross Platform Build

Go supports cross platform build targets natively, but because pixel depends on [CGo](https://pkg.go.dev/cmd/cgo) it is necessary to specify a C cross-compiler that is compatible with the target.

### Linux to Windows

To build a windows executable on linux, you will need to install a windows C compiler, such as mingw. The following commands can be used to build for an amd64 architecture on windows.

Install mingw on linux with apt:
```sh
sudo apt update
sudo apt install gcc-mingw-w64
```

Build for windows amd64
```sh
GOOS=windows GOARCH=amd64 CGO_ENABLED=1 CXX=x86_64-w64-mingw32-g++ CC=x86_64-w64-mingw32-gcc go build
```

## Contributing

Join us in the [Discord Chat!](https://discord.gg/n2Y8uVneK6)
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