I think i found the problem with the fpc source files path, i installed Lazarus on ubuntu and fedora and i had some problems, every time i tried to double-click the design form i got a message about gettext.ppu, then i just found the sources in /usr/shared/fpc/2.4.0
I just copied everything inside into the path: /usr/lib/fpc/2.4.0 an got it working.
About the lazarus construction i always have to set the security in those directories and start it with sudo, that's not bad it's a little price for secure system.