The version 7.6.0 is currently work in progress (see
https://github.com/cp2k/cp2k/pull/3651). If you have your own installation of the SIRIUS library (or any other library), you can provide the path by "--with-sirius=/your/path/to/sirius" (and similar for other features). I am not too experienced with the installation of SIRIUS. Considering your error messages, there may be a misconfiguration of the installation. Could you provide more information (version of the compiler, full output of SIRIUS and maybe the CP2K Toolchain)?