what fpc version ?
Just an idea, but do you have Gnome installed or just KDE? Lazarus depends on the GTK library which is used by Gnome. You can check install requirements at http://lazarus-ccr.sourceforge.net/kb/index.php/Installing_Lazarus
It is strange that gtkproc is recompiled, when you compile your application.Somehow the compiler is given the path to the source of gtkproc, and that should not happen. The compiler should have the path to the gtkproc.ppu and gtkproc.o. Normally this is done by adding a dependency to the LCL in the object inspector.Did you add the path th lazarus\lcl\interfaces\gtk in the compiler options or the fpc.cfg?