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Use cURL instead of cpp-httplib
Mar 5, 2025
58f7e6f · Mar 5, 2025

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compiling.md

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Compiling

OpenMoHAA supports any architecture, thanks to the CMake build system and cross-platform code/libraries. While the most common little-Endian architectures (arm, aarch64, x86, x86_64) have been tested and confirmed to work, big-Endian architectures should be supported as well; however, they remain untested.

The following tools are required for all platforms:

  • CMake >= 3.12
  • Flex (>= 2.6.4) and Bison (>= 3.5.1)
  • A C++11 compiler
  • SDL2
  • OpenAL SDK

The following tools may be useful:

The installation directory can be set to the MOHAA directory with -DCMAKE_INSTALL_PREFIX=/path/to/mohaa.

Compiling debug binaries will result in a -dbg suffix appended to the name of the binaries to avoid mixing debug/release code.

cURL is used to access websites. It is currently used to check for a new release. If the project is compiled without cURL, OpenMoHAA will be unable to check for new updates automatically.

Compiling for Linux

These are the tools required on Linux :

  • Clang >= 7.0.1 or GCC >= 9.4.0
  • libsdl2-dev
  • libopenal-dev
  • libssl-dev
  • libcurl4-openssl-dev

clang-7 and gcc-9 has been tested to work on Ubuntu 20.04. Although it's best to use the latest versions.

1 line install command with clang:

sudo apt-get install -y cmake ninja-build clang lld flex bison libsdl2-dev libopenal-dev libcurl4-openssl-dev

Example with CMake and ninja-build installed:

mkdir .cmake && cd .cmake
cmake -G Ninja ../

Other compilers can be specified by appending -DCMAKE_C_COMPILER=/path/to/compiler -DCMAKE_CXX_COMPILER=path/to/compiler to the CMake command-line.

Compiling for Windows

Visual Studio (2019 or 2022) is generally preferred.

Append -DFLEX_EXECUTABLE=...\win_flex.exe -DBISON_EXECUTABLE=...\win_bison.exe -DOPENAL_INCLUDE_DIR="path/to/oal/include" -DOPENAL_LIBRARY="path/to/oal" to the CMake command-line to use the package from the link above.

Optionally, The cURL library can be compiled with the following CMake commands:

cmake -DCMAKE_INSTALL_PREFIX="E:\Src\openmoh\openmohaa\thirdparty\curl\build\install" -DCURL_USE_LIBPSL=OFF -DCURL_USE_SCHANNEL=ON -B build
cmake --build build --config Release
cmake --install build --config Release

afterwards you can can append -DCURL_ROOT=path\to\curl\install to specify the install path to cURL.

Tweaking the build

  • -DBUILD_NO_CLIENT=1 Don't build client binaries. This will only build the dedicated server binaries.
  • -DCMAKE_LIB_SUFFIX=suffix Default suffix to use for the default lib directory. For example -DCMAKE_LIB_SUFFIX=64
  • -DNO_MODERN_DMA=1 Use the basic DMA sound system from quake3. This lacks many features such as soundtracks and movie audio from the modern OpenAL-based DMA sound system. This option is not recommended, unless openal is not available.
  • -DTARGET_LOCAL_SYSTEM=1 for compiling and installing on the local system. This will remove the architecture suffix at the end of each binary. This option can be useful for packaging builds.
  • -DUSE_SYSTEM_LIBS=1 for third-party libraries, this will make use of system libraries instead of libraries that are embedded within the project.