(Linux/macOS) Installing the DirectX SDK on Wine
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On Linux and macOS, the DirectX SDK is still required to compile shaders. On these platforms we use Wine to run the DirectX SDK tools.

To install Wine and winetricks on **Linux**, refer to your distribution's package database. Typically the package names will simply be `wine` and `winetricks`.

To install Wine and winetricks on **macOS**:

- Install Homebrew from https://brew.sh/
- Install wine with `brew cask install wine-stable`
- Install winetricks with `brew install winetricks`
- (If you already have these installed, update with: `brew update`, `brew upgrade wine-stable`, `brew upgrade winetricks`)

Once Wine and winetricks are installed:

- Setup Wine with `winecfg`
- Install the DirectX SDK with `winetricks dxsdk_jun2010`

**Alternative method (works on Catalina):** Instead of installing the DirectX SDK, you can place a copy of `fxc.exe` from the DirectX SDK in the `build/tools` directory. Then use `env WINE=/usr/local/bin/wine64 sh winetricks d3dcompiler_43` to install the required DLL from the DirectX redistributable (this is a smaller download than the SDK).