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104 lines
6.3 KiB
Markdown
104 lines
6.3 KiB
Markdown
# Build instructions
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## Windows
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Prerequisites:
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- A recent version of Visual Studio 2022 (recommended but not required) with the following additional components:
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- C++ CMake tools for Windows
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- Windows 10/11 SDK
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- git
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Instructions:
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1. Run `git clone --recursive https://github.com/cemu-project/Cemu`
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2. Launch `Cemu/generate_vs_solution.bat`.
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- If you installed VS to a custom location or use VS 2019, you may need to manually change the path inside the .bat file.
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3. Wait until it's done, then open `Cemu/build/Cemu.sln` in Visual Studio.
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4. Then build the solution and once finished you can run and debug it, or build it and check the /bin folder for the final Cemu_release.exe.
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You can also skip steps 3-5 and open the root folder of the cloned repo directly in Visual Studio (as a folder) and use the built-in CMake support but be warned that cmake support in VS can be a bit finicky.
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## Linux
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To compile Cemu, a recent enough compiler and STL with C++20 support is required! clang-12 or higher is what we recommend.
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### Installing dependencies
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#### For Ubuntu and derivatives:
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`sudo apt install -y cmake curl freeglut3-dev git libgcrypt20-dev libgtk-3-dev libpulse-dev libsecret-1-dev libsystemd-dev nasm ninja-build`
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*Additionally, for Ubuntu 22.04 only:*
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- `sudo apt install -y clang-12`
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- At step 3 while building, use
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`cmake -S . -B build -DCMAKE_BUILD_TYPE=release -DCMAKE_C_COMPILER=/usr/bin/clang-12 -DCMAKE_CXX_COMPILER=/usr/bin/clang++-12 -G Ninja -DCMAKE_MAKE_PROGRAM=/usr/bin/ninja`
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#### For Arch and derivatives:
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`sudo pacman -S --needed base-devel clang cmake freeglut git gtk3 libgcrypt libpulse libsecret linux-headers llvm nasm ninja systemd unzip zip`
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#### For Fedora and derivatives:
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`sudo dnf install clang cmake cubeb-devel freeglut-devel git gtk3-devel kernel-headers libgcrypt-devel libsecret-devel nasm ninja-build perl-core systemd-devel zlib-devel`
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### Build Cemu using cmake and clang
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1. `git clone --recursive https://github.com/cemu-project/Cemu`
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2. `cd Cemu`
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3. `cmake -S . -B build -DCMAKE_BUILD_TYPE=release -DCMAKE_C_COMPILER=/usr/bin/clang -DCMAKE_CXX_COMPILER=/usr/bin/clang++ -G Ninja`
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4. `cmake --build build`
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5. You should now have a Cemu executable file in the /bin folder, which you can run using `./bin/Cemu_release`.
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#### Using GCC
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While we use and test Cemu using clang, using GCC might work better with your distro (they should be fairly similar performance/issues wise and should only be considered if compilation is the issue).
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You can use it by replacing the step 3 with the following:
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`cmake -S . -B build -DCMAKE_BUILD_TYPE=release -DCMAKE_C_COMPILER=/usr/bin/gcc -DCMAKE_CXX_COMPILER=/usr/bin/g++ -G Ninja`
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#### Troubleshooting steps
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- If step 3 gives you an error about not being able to find ninja, try appending `-DCMAKE_MAKE_PROGRAM=/usr/bin/ninja` to the command and running it again.
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- If step 3 fails while compiling the boost-build dependency, it means you don't have a working/good standard library installation. Check the integrity of your system headers and making sure that C++ related packages are installed and intact.
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- If step 3 gives a random error, read the `[package-name-and-platform]-out.log` and `[package-name-and-platform]-err.log` for the actual reason to see if you might be lacking the headers from a dependency.
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- If step 3 is still failing or if you're not able to find the cause, please make an issue on our Github about it!
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- If step 4 gives you an error that contains something like `main.cpp.o: in function 'std::__cxx11::basic_string...`, you likely are experiencing a clang-14 issue. This can only be fixed by either lowering the clang version or using GCC, see below.
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- 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!
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- 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.
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- If step 3 fails during rebuild after `git pull` with an error that mentions RPATH, add this to the end of step 3: `-DCMAKE_BUILD_WITH_INSTALL_RPATH=ON`
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## macOS
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To compile Cemu, a recent enough compiler and STL with C++20 support is required! LLVM 13 and
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below, built in LLVM, and Xcode LLVM don't support the C++20 feature set required. Currently,
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LLVM 15 isn't supported due to compatibility issues with Boost dependency. The OpenGL graphics
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API isn't support on macOS, Vulkan must be used. Additionally Vulkan must be used through the
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Molten-VK compatibility layer
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### On Apple Silicon Macs, Rosetta 2 and the x86_64 version of Homebrew must be used
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You can skip this section if you have an Intel Mac. Every time you compile, you need to perform steps 2.
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1. `softwareupdate --install-rosetta` # Install Rosetta 2 if you don't have it. This only has to be done once
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2. `arch -x86_64 zsh` # run an x64 shell
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### Installing brew
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1. `/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"`
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2. `eval "$(/usr/local/Homebrew/bin/brew shellenv)"` # set x86_64 brew env
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### Installing dependencies
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`brew install boost git cmake llvm@14 ninja nasm molten-vk`
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### Build Cemu using cmake and clang
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1. `git clone --recursive https://github.com/cemu-project/Cemu`
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2. `cd Cemu`
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3. `cmake -S . -B build -DCMAKE_BUILD_TYPE=release
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-DCMAKE_C_COMPILER=/usr/local/opt/llvm@14/bin/clang -DCMAKE_CXX_COMPILER=/usr/local/opt/llvm@14/bin/clang++ -G Ninja`
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4. `cmake --build build`
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5. You should now have a Cemu executable file in the /bin folder, which you can run using `./bin/Cemu_release`.
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#### Troubleshooting steps
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- If step 3 gives you an error about not being able to find ninja, try appending `-DCMAKE_MAKE_PROGRAM=/usr/local/bin/ninja` to the command and running it again.
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## Updating Cemu and source code
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1. To update your Cemu local repository, use the command `git pull --recurse-submodules` (run this command on the Cemu root).
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- This should update your local copy of Cemu and all of its dependencies.
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2. Then, you can rebuild Cemu using the steps listed above, according to whether you use Linux or Windows.
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If CMake complains about Cemu already being compiled or another similar error, try deleting the `CMakeCache.txt` file inside the `build` folder and retry building.
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