I was thinking about that the other day. Maybe installing the emacs-lisp files in the Extensions (as a regular quark) folder by default or some user directory would be better. Since there are many legacy and rusty parts, this could encourage more people to improve them, instead of installing them with system files (as default)
IIUC you referring to the missing D prefix in the error message - this is indeed a bit misleading but in cmake one sets a flag by prefixing it with D…
You can also try out ccmake . in the build directory to see and set the available flags.
IMO SC_EL could be addressed in the README for linux - it is mentioned in the Fedora section. Feel free to propose a change and create a PR
True if the constant is 1, ON, YES, TRUE, Y, or a non-zero number (including floating point numbers). False if the constant is 0, OFF, NO, FALSE, N, IGNORE, NOTFOUND, the empty string, or ends in the suffix -NOTFOUND.
When cmake is first run in an empty build tree, it creates a CMakeCache.txt file and populates it with customizable settings for the project. This option may be used to specify a setting that takes priority over the project’s default value. The option may be repeated for as many cache entries as desired.