Thanks a lot for your help!!! I had forget about Cmake. As a Linux user, I automatically looked in the "README.Unix.txt". Tbh, there are a lot of "README" files and it's just confusing. Why not just keep the "README.CMake.txt" and rename it to "BUILD.txt" which already describes how to build. In my opinion, I also think that the old way to do it with autoconf/make should not be supported and the deprecated options from Cmake should also get removed. In general, the build system could get less confusing and the build instructions could fit into one place (file). Thanks a lot for your time and your work!