SkyMP

A general-purpose multiplayer mod for Skyrim SE.
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Building From Source

You can find instructions on setting up the project locally below. To get a local copy up and running follow these simple example steps. You need ~4 GB RAM, ~22 GB on your hard drive and some free time.

Prerequisites

Common

These tools required regardless of your system:

• 64-bit NodeJS 12.x/14.x/16.x
• Yarn: npm install --global yarn
• CMake 3.18.2 or higher

Windows

Before your start make sure that your system meets the conditions:

• Windows 7 or higher (Windows 10 is recommended)
• Visual Studio 2019
• .NET Framework SDK at 4.6.0 or higher (Visual Studio Installer -> .NET desktop development)

Linux

You can build and run server and unit-tests on Linux. As Skyrim has no native Linux version, client can only be built using MSVC. Client can be run with Proton (though it can be tricky to get Skyrim itself to work properly).

• Ubuntu (Some other distributions may also work, but we know that Alpine doesn't)
• Clang 12 (GCC is not supported): sudo apt install clang-12
• Python 2 (not 3.x! It is needed to build ChakraCore. Don't worry, it won't conflict with Python 3): sudo apt install python2
• Make sure that your NodeJS and CMake are fresh enough:
  • You can use nvm or Nodesource's apt repositories to install fresh Node
  • The simpliest way to install fresh CMake is to download a .tar.gz from CMake download page, unpack it to your home directory and add it to path:

    echo 'export PATH="$HOME/apps/cmake-3.22.0-.../bin:$PATH"' >> ~/.bashrc

Configuring and Building

Common

1. Clone the repo, including submodules

   git clone https://github.com/skyrim-multiplayer/skymp.git
   cd skymp
   git submodule init
   git submodule update

2. Do OS-specific steps (see below)

Windows

1. Make a build directory (used for project files, cache, artifacts, etc)

   mkdir build

2. Generate project files with CMake (replace path with your actual Skyrim SE folder)

   cd build
   cmake .. -DSKYRIM_DIR="C:/Program Files (x86)/Steam/steamapps/common/Skyrim Special Edition"

   For users who don't have Skyrim SE installed:

   cd build
   cmake ..

   • Some tests would be skipped
   • The server would require manual installation of Skyrim.esm and other master files
   • Papyrus scripts that require Bethesda's compiler would not be compiled, prebuilts would be used

3. Build with CMake:

   cmake --build . --config Debug

   On Windows you also can open build/skymp.sln with Visual Studio, then Build -> Build Solution.

   All build artifacts would be placed into build/dist.

How to build only SkyrimPlatform

• For those users who want to build SP but not SkyMP there is ONLY_SP option:

  cmake .. -DONLY_SP=ON

Linux

On Linux, there might be some tricky dependency issues. To work around them, we recommend you to use a wrapper script build.sh. It will create a temporary directory and add some aliases to PATH.

1. Generate project files with CMake wrapper (replace path with your actual Skyrim SE folder)

   ./build.sh --configure -DCMAKE_BUILD_TYPE=Debug \
      -DSKYRIM_DIR="$HOME/.steam/debian-installation/steamapps/common/Skyrim Special Edition"

   For users who don't have Skyrim SE installed:

   ./build.sh --configure -DCMAKE_BUILD_TYPE=Debug

   If you're building for a production machine, change build type to Release:

   ./build.sh --configure -DCMAKE_BUILD_TYPE=Release

2. Build with CMake wrapper:

   cd build
   ../build.sh --build

   Additional arguments after --build will be passed to CMake. E.g. you can specify the build target:

   cd build
   ../build.sh --build --target=unit  # only build unit-tests and their dependencies
   # Will run cmake --build . --target=unit

Optional steps after build

1. Run tests:

   ctest -C Debug --verbose

   Some tests (ESPMTest) require Skyrim SE data files and will be skipped if you didn't specify -DSKYRIM_DIR.

   In order to avoid potential errors, make sure:

   1. You have installed it using Steam and it's up to date (currently last update was on Nov 20, 2019). See SteamDB for hashes and update history.
   2. You did not modify Skyrim.esm, Update.esm, Dawnguard.esm, HearthFires.esm and Dragonborn.esm. (Ideally, you should have pure Vanilla version installed.)

2. Calculate test coverage (Windows-only):

   Install OpenCppCoverage and then:

   cmake .. -DCPPCOV_PATH="C:\Program Files\OpenCppCoverage"
   ctest -C Debug --verbose

   These commands would re-generate project files with coverage enabled and run tests. Coverage report would be in build/__coverage.

3. If you wish to use solely SP build, you can run CreateArchive_SkyrimPlatform script to get zip with only related files (Windows-only):

   Go to ci folder and double-click CreateArchive_SkyrimPlatform.

License

Use of this source code is subject to GPLv3. (See LICENSE for more information)

Contact

Leonid Pospelov - Pospelov#3228 - pospelovlm@yandex.ru

Project Link: https://github.com/skyrim-multiplayer/skymp