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Stage 1 of the libretro build process originally built a base Ruby targeting the build machine that was then used to build the version of Ruby actually used in the core for better determinism, but it turns out that the base Ruby matters very little. We can just use the system version of Ruby as the base Ruby.
47 lines
1.6 KiB
Markdown
47 lines
1.6 KiB
Markdown
The build process for the libretro core is divided into two stages.
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# Stage 1
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All the files produced by this stage are platform-agnostic, so you can run this build stage on any computer, regardless of which operating system or CPU architecture the libretro core is for.
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Required software:
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* C and C++ compilers
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* GNU Make
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* GNU Autotools
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* GNU Bison
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* [Git](https://git-scm.com)
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* [curl](https://curl.se)
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* [Info-ZIP's Zip](https://infozip.sourceforge.net/Zip.html) (the `zip` package found in many package managers)
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* [WASI SDK](https://github.com/WebAssembly/wasi-sdk) (currently you need WASI SDK version 21; later versions don't work yet)
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* [Binaryen](https://github.com/WebAssembly/binaryen)
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* Either [Universal Ctags](https://github.com/universal-ctags/ctags) or [Exuberant Ctags](https://ctags.sourceforge.net)
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* Ruby (any reasonably recent version)
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Go to the directory that this README.md is in and run this command, filling in the paths to WASI SDK, `wasm-opt` from Binaryen and `ctags` from Universal Ctags or Exuberant Ctags accordingly:
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```
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make WASI_SDK=/path/to/wasi-sdk WASM_OPT=/path/to/binaryen/bin/wasm-opt CTAGS=/path/to/ctags
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```
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This will produce the directory "libretro/build/libretro-stage1".
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# Stage 2
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This stage produces the actual core file.
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Required software:
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* C and C++ compilers
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* [Git](https://git-scm.com)
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* [Meson](https://mesonbuild.com)
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* [Ninja](https://ninja-build.org)
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* [CMake](https://cmake.org)
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No software libraries are required other than the system libraries.
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Go to the root directory of this repository and run:
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```
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meson setup build -Dlibretro=true
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cd build
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ninja
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```
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