The deleted includes are redundant, because other headers will include
the necessary files. Additionally, they cause build failures, because
including EGL/egl.h or EGL/eglext.h directly, instead of through
wlr/render/egl.h or wlr/render/interface.h, will mean that
MESA_EGL_NO_X11_HEADERS will not have been defined, and so the EGL
headers will attempt to pull in unnecessary X11 headers that may not
exist on the system.
For the headers produced by glgen.sh, the includes couldn't simply be
deleted, because no other header would include the EGL headers. Neither
wlr/render/egl.h or wlr/render/interface.h felt appropriate to include,
so I opted instead to copy the MESA_EGL_NO_X11_HEADERS definition before
the EGL includes.
Rootston is the "big" wlroots test compositor. It implements basically every
feature of wlroots and may be useful as a reference for new compositors.
However, it's mostly used as a testbed for wlroots development and does not have
particularly clean code and is not particularly well designed: proceed with a
grain of salt. It is not designed for end-users.
Running rootston
If you followed the build instructions in ../README.md, the rootston
executable can be found at build/rootston/rootston. To use it, refer to the
example config at rootston/rootston.ini.example and place a
config file of your own at rootston.ini in the working directory (or in an
arbitrary location via rootston -C). Other options are available, refer to
rootston -h.