Of course I installed the same packages, many times, but when I start Lazarus the compiler raises the error
Fatal: Impossible to find FPimage used by InterfaceBase of package LCLBase.
A hint in the message windows says that the compiler cannot find the .ppu files of the unites, but those files are properly installed in
/usr/local/lib/fpc/3.0.4/units/x86_64-darwin
and the path of the fpc source is correctely set as
/usr/local/lib/fpc/3.0.4