This repository contains native system binary files required to build Mach Engine for Linux (x86_64), from any host OS.
In specific, it contains a minimal set of Ubuntu packages.
All files in this SDK are permissively licensed (MIT, BSD, Apache, X, and SGI licenses) except for the mesa GL development library, of which portions are GPL licensed - and whose file list you can find here:
https://packages.ubuntu.com/bionic/amd64/mesa-common-dev/filelist
Mach only uses the GL development headers from the mesa library, which are permissively (not GPL) licensed.
You can find the license information in the standard Linux locations, e.g.:
$ find root | grep copyright
root/usr/share/doc/libxdmcp-dev/copyright
root/usr/share/doc/x11proto-dev/copyright
root/usr/share/doc/libxrandr-dev/copyright
root/usr/share/doc/libxcb1-dev/copyright
root/usr/share/doc/libxau-dev/copyright
root/usr/share/doc/libxext-dev/copyright
root/usr/share/doc/mesa-common-dev/copyright
root/usr/share/doc/libxcb1/copyright
root/usr/share/doc/libxinerama-dev/copyright
root/usr/share/doc/libxcursor-dev/copyright
root/usr/share/doc/libxi-dev/copyright
root/usr/share/doc/libx11-6/copyright
root/usr/share/doc/libvulkan-dev/copyright
root/usr/share/doc/libx11-dev/copyright
root/usr/share/doc/libxfixes-dev/copyright
root/usr/share/doc/libxrender-dev/copyright