README.md: Document dependencies for Ubuntu builds

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Xavier Del Campo Romero 2022-07-23 02:54:15 +02:00
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@ -52,6 +52,14 @@ cmake ..
make -j$(nproc --all)
```
#### Dependencies
##### Ubuntu
```sh
apt install libsdl-gfx1.2-dev libsdl-mixer1.2-dev libsdl1.2-dev
```
### Cross-compilation
[`CMAKE_TOOLCHAIN_FILE`](https://cmake.org/cmake/help/latest/variable/CMAKE_TOOLCHAIN_FILE.html)