I've successfully built LibreCAD (current "master"). My question is about how to install it. Normally I'd do "sudo make install" at this point. That exists, and "succeeds" in the limited sense that it doesn't produce any errors, but it doesn't appear to do anything.
If the build is successful an executable is created, ~/dev/LibreCAD-master/unix/librecad, and LibreCAD can be launched by typing:
$ ./unix/librecad &
No mention of a post-build install procedure there either.
Edited to add: To be clear, I have built it, and have run it via "./unix/librecad &" as described. But running it out of a build directory buried deep in my open-source-projects tree is less than ideal.