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Programming Howto:Manually Build BCI2000 on Non-Windows Platforms

From BCI2000 Wiki

Installing Dependencies

There are three dependencies that need to be installed before you can compile BCI2000:

  • ffmpeg (version 8, other versions do not work with BCI2000)
  • portaudio
  • libsndfile
  • sdl2
  • dylibbundler

These can be installed using the 

install_dependencies

script in the BCI2000 home directory. This will automatically detect your homebrew or it will download a portable version of homebrew in your BCI2000 directory. Then it will install the necessary dependencies. Alternatively, you can manually install them, and they will be automatically detected by CMake. If you have already installed homebrew, this can be done with 

brew install ffmpeg@8
brew link ffmpeg@8
brew install portaudio
brew install libsndfile
brew install sdl2
brew install dylibbundler

Configure BCI2000 for Compilation

Run the CMake GUI

Double-click "Configure.sh.cmd" in your BCI2000 build directory.

Tell CMake which Qt installation to use

Click "AddEntry" in the CMake window (Note that checking off "Advanced" in CMake is optional and does not impact compilation) and enter the path to a Qt directory. If you installed Qt using the Qt online installer, the path will look like /Users/foo/Qt/6.9.0/macos. Use CMAKE_PREFIX_PATH as the name for the new entry. Be aware that the entry's name is case sensitive.

Also, currently, on non-windows platforms, Qt 6 is the only version that is supported.

Configuration

In the CMake window, click "Configure" and choose a generator that is consistent with your compiler. This tutorial will be using Unix Makefiles.

Then click "Done" to perform the configuration step.

You will see a list of targets scrolling by, and a number of new entries in the variable list at the top of the window, marked in red.

Choose Build Options

Make sure the "Grouped" checkbox is checked, and configure the build by customizing values in the "BUILD" group, "EXTENSIONS" group, and "USE" group.

Generate Makefiles

Then, click "Generate" to create build files. When CMake displays its "Generating done" message, your BCI2000 build directory will now contain a Makefile (or a project file for your compiler of chioce), as well as a number of additional CMake-generated files.

Compile BCI2000

Open Terminal

Open a new terminal window and navigate to your BCI2000 build directory.

Build Executables

Run: 

make -j

from your BCI2000 build directory. Once this is finished your BCI2000 prog directory will contain a number of executables, one for each module, plus a few helper executables. Not everything works the same or, in some cases, at all on non-windows platforms. See Non-Windows Functionality for more information.

The build process is now complete. Run 

make -j

again to recompile. Or 

make <target>

to recompile only a specific target.

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