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Building for MacOS

Dependencies

To successfully build an OpenXcom macOS bundle you will need relevant dependencies installed:

The dependencies you require are following:

  • cmake, version 3.12.0 or later
  • SDL (libsdl1.2)
  • SDL_mixer (libsdl-mixer1.2)
  • SDL_gfx (libsdl-gfx1.2), version 2.0.22 or later
  • SDL_image (libsdl-image1.2)

CMake is used to configure the project. Download it manually or install it with Homebrew (brew install cmake).

The easiest way of getting library dependencies is MacPorts:

port -N install libsdl -compat +legacy libsdl_gfx libsdl_image libsdl_mixer

Following instructions assume MacPorts is installed in default prefix /opt/local. If you installed ports into different location, replace it.

Building

This project has two ways to build: one with make and the other with Xcode. The make way is typically used for CI builds and produces a similar artifact as the Linux build. If you're just looking to get a quick build, this is a good way to do so. The Xcode way is useful if you're developing features (or bug fixes) and require the need for a debugger or an IDE experience.

Make

  1. In the root of the repository, generate the Makefile with cmake (Release is also a valid build type): 
    cmake -DCMAKE_BUILD_TYPE=Debug -DCMAKE_PREFIX_PATH=/opt/local -B build .
  2. Copy the vanilla game assets (UFO/TFTD) into the build's bin/ directory. If the game is next to the repo, cd into game and run: 
    cp  -r GEODATA GEOGRAPH MAPS ROUTES SOUND TERRAIN UFOGRAPH UFOINTRO* UNITS ../OpenXcom/bin/UFO/
  3. Build the project (2 being the number of threads to run): 
    cmake --build build -j2
  4. Make sure that you set up your Data directory properly.
  5. Your artifact will be named openxcom.app in the build target directory.

Xcode

  1. In the root of the repository, generate the XCode project file with cmake (Release is also a valid build type): 
    cmake -DCMAKE_BUILD_TYPE=Debug -DCMAKE_PREFIX_PATH=/opt/local -G Xcode -B build .
  2. Open the OpenXcom.xcodeproj in Xcode.
  3. Copy the vanilla game assets (UFO/TFTD) into the build's bin/ directory.
  4. Build with cmd-B
  5. Your artifact will be named openxcom.app in the build target directory (Debug or Release).

Additional Help

Should you require any further assistance regarding the macOS build - feel free to ask around on the official forums - https://openxcom.org/forum/ or contact us directly on GitHub - @rcreasey