For my problem: I found in the arch wiki: "When is patching acceptable? It's inevitable that some software will need modifications to work. Patches to the *build system* are pretty much always allowed. This is usually needed when Arch's tools are too new for shipped scripts, and things do not work right (libtool is a known offender here)." But I don't understand what it means. Is it important for my problems? Can libtool be the problem? More test. I found a program: "Namcap is a tool to check binary packages and source PKGBUILDs for common packaging mistakes, which can also be automatically enabled." I tried to run it with cin...pkg.tar.xz for arch. I enclose the result. Towards the end of the file there are some errors, but I can not judge if they have to do with my problem.