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Add Apple Silicon build instructions (#280)

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@ -59,19 +59,29 @@ You can use it by replacing the step 3 with the following:
- If step 4 gives you a different error, you could report it to this repo or try using GCC. Just make sure your standard library and compilers are updated since Cemu uses a lot of modern features! - If step 4 gives you a different error, you could report it to this repo or try using GCC. Just make sure your standard library and compilers are updated since Cemu uses a lot of modern features!
- If step 4 gives you undefined libdecor_xx, you are likely experiencing an issue with sdl2 package that comes with vcpkg. Delete sdl2 from vcpkg.json in source file and recompile. - If step 4 gives you undefined libdecor_xx, you are likely experiencing an issue with sdl2 package that comes with vcpkg. Delete sdl2 from vcpkg.json in source file and recompile.
## MacOS ## macOS
To compile Cemu, a recent enough compiler and STL with C++20 support is required! LLVM 13 and To compile Cemu, a recent enough compiler and STL with C++20 support is required! LLVM 13 and
below, built in LLVM, and Xcode LLVM don't support the C++20 feature set required. Currently, below, built in LLVM, and Xcode LLVM don't support the C++20 feature set required. Currently,
LLVM 15 isn't supported due to compatibility issues with Boost dependency. The OpenGL graphics LLVM 15 isn't supported due to compatibility issues with Boost dependency. The OpenGL graphics
API isn't support on MacOS, Vulkan must be used. Additionally Vulkan must be used through the API isn't support on macOS, Vulkan must be used. Additionally Vulkan must be used through the
Molten-VK compatibility layer. Molten-VK compatibility layer
### On Apple Silicon Macs, Rosetta 2 and the x86_64 version of Homebrew must be used
You can skip this section if you have an Intel Mac. Every time you compile, you need to perform steps 2.
1. `softwareupdate --install-rosetta` # Install Rosetta 2 if you don't have it. This only has to be done once
2. `arch -x86_64 zsh` # run an x64 shell
### Installing brew ### Installing brew
`/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"`
1. `/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"`
2. `eval "$(/usr/local/Homebrew/bin/brew shellenv)"` # set x86_64 brew env
### Installing dependencies ### Installing dependencies
`brew install git cmake llvm@14 ninja nasm molten-vk`
`brew install boost git cmake llvm@14 ninja nasm molten-vk`
### Build Cemu using cmake and clang ### Build Cemu using cmake and clang
1. `git clone --recursive https://github.com/cemu-project/Cemu` 1. `git clone --recursive https://github.com/cemu-project/Cemu`