Xonotic on Linux uses system libraries. For Windows and macOS external dlls and dylibs are needed. Those reside in xonotic/misc/buildfiles

Because at the time of writing there is no automatism to build or update the games dependencies for those 2 platforms and the current dlls/dylibs are VERY outdated and thus also contain vulnerabilities, this page should document on where to obtain or how to build them, retaining API compatibility to darkplaces and also older OS platform versions like Windows XP.

For Windows, all libraries can/should be obtained from https://packages.msys2.org/search [1] with the exception being an official DLL release from the upstream available (this is the case for libjpeg-turbo) or if it has to be compiled on under Windows for some reason (eg. libcurl for Schannel (Windows crypto for HTTPS) support).

# libcurl
libcurl is used for downloading *.pk3 files from servers

### Windows
Darkplaces loads `libcurl-4.dll` or `libcurl-3.dll`

Build instructions:
* clone https://gitlab.com/incognico/build-libcurl-windows
* run `build.bat` in a VS2019 Development Shell
* rename the built dlls (x64 & x86) to `libcurl-4.dll`

### macOS
Darkplaces loads `libcurl.4.dylib` or `libcurl.3.dylib` or `libcurl.2.dylib`

# libjpeg-turbo
libjpeg-turbo is needed to display jpeg images/textures

### Windows
Darkplaces loads `libjpeg.dll`

Obtainment instructions:
* download libjpeg-turbo-VERSION-vc.exe & libjpeg-turbo-VERSION-vc64.exe from https://sourceforge.net/projects/libjpeg-turbo/files/
* extract the *.exe files and use `bin/jpeg62.dll`
* rename the dlls (x64 & x86) to `libjpeg.dll`

### macOS
Darkplaces loads `libjpeg.62.dylib`

# libpng
libpng is needed to display png images/textures

### Windows
Darkplaces loads `libpng16.dll` or `libpng16-16.dll` or `libpng15-15.dll` or `libpng15.dll` or `libpng14-14.dll` or `libpng14.dll` or `libpng12.dll`

### macOS
Darkplaces loads `libpng16.16.dylib` or `libpng15.15.dylib` or `libpng14.14.dylib` or `libpng12.0.dylib`

# zlib
zlib is required to read *.pk3 files. Also it is a dependency of libpng and probably some other libraries.

### Windows
Darkplaces loads: ifdef ZLIB_USES_WINAPI `zlibwapi.dll` or `zlib.dll` else `zlib1.dll`. We use `zlib1.dll`!

Obtainment instructions:
* Download as MSYS2 Package [1] in x86 and x64 versions

### macOS
Darkplaces loads `libz.dylib`

# libfreetype

# libogg

# libvorbis

# libvorbisfile

# libvorbisenc

# libtheora

# libstdc++-6 & libgcc_s_sjlj-1
libgcc_s_sjlj-1 is a dependency of libstdc++-6

# libd0_blind_id-0 & libd0_rijndael-0
See https://gitlab.com/xonotic/d0_blind_id

# libgmp
A dependency of libd0_blind_id-0