pm wrote

{$IFDEF FREEBSD} QtIntf? = 'libqt4intf.so'; {$ENDIF}

but there are many LINUX ifdefs. (see below)
It would be complicated to add "... or FREEBSD or NETBSD" everywhere etc.

I am considering to replace LINUX with UNIX everywhere, but need to check if this does not break things.

Can you also read Lazarus Qt Widget Set List.

I will ask there what they think about that.

$ grep -ir LINUX qt4.pas lib
qt4.pas:{$IFDEF LINUX}
qt4.pas:{$ifdef DARWIN or LINUX }
qt4.pas:{$ifdef LINUX }
qt4.pas:{$ifdef LINUX }
qt4.pas:{$ifdef LINUX }
qt4.pas:{$ifdef DARWIN or LINUX }
qt4.pas:{$ifdef DARWIN or LINUX }
qt4.pas:{$ifdef LINUX }
qt4.pas:{$ifdef LINUX }
qt4.pas:{$ifdef LINUX }
qt4.pas:{$ifdef LINUX }
qt4.pas:{$ifdef DARWIN or LINUX }
qt4.pas:{$ifdef DARWIN or LINUX }
qt4.pas:{$ifdef LINUX }
qt4.pas:{$IFDEF LINUX}
lib/qcoreapplication.hb:#if defined DARWIN || LINUX lib/qcoreapplication.cppb:#if defined DARWIN || LINUX lib/qapplication.hb:#if defined LINUX
lib/qapplication.hb:#if defined LINUX
lib/qapplication.cppb:#if defined LINUX
lib/qapplication.cppb:#if defined LINUX
lib/qwidget.hb:#if defined LINUX
lib/qwidget.hb:#if defined DARWIN || LINUX
lib/qwidget.cppb:#if defined LINUX
lib/qwidget.cppb:#if defined DARWIN || LINUX
lib/qcursor.hb:#if defined DARWIN || LINUX
lib/qcursor.hb:#if defined LINUX
lib/qcursor.cppb:#if defined DARWIN || LINUX
lib/qcursor.cppb:#if defined LINUX
lib/qx11info_x11.hb:#if defined LINUX
lib/qx11info_x11.cppb:#if defined LINUX
lib/qx11info_x11.cppb:#if defined LINUX
lib/qcolor.hb:#if defined LINUX
lib/qcolor.cppb:#if defined LINUX
lib/qregion.hb:#if defined LINUX
lib/qregion.cppb:#if defined LINUX
lib/qprinter.hb:#if defined DARWIN || LINUX
lib/qprinter.cppb:#if defined DARWIN || LINUX
lib/qfont.hb:#if defined DARWIN || LINUX
lib/qfont.cppb:#if defined DARWIN || LINUX
lib/qpixmap.hb:#if defined LINUX
lib/qpixmap.cppb:#if defined LINUX