Hello I have downloaded and tried to build the September 2006 version of Hugs on my Intel Mac, Mac OS X 10.4. The build completes and I can run Hugs just fine, but I can't get X11 to work. Here is a small part of the make log: Reading parameters from /Users/Emil/Desktop/Downloads/hugs98-plus-Sep2006/packages/X11/X11.buildinfo Preprocessing library X11-1.2... ../../libraries/tools/hsc2hs -D__HUGS__ -Iinclude --lflag=-lX11 -o Graphics/X11/Types.hs Graphics/X11/Types.hsc /usr/bin/ld: can't locate file for: -lX11 collect2: ld returned 1 exit status linking Graphics/X11/Types_hsc_make.o failed command was: /usr/bin/gcc -lX11 Graphics/X11/Types_hsc_make.o -o Graphics/X11/Types_hsc_make ../../packages/Cabal/examples/hapax.hs: got error code while preprocessing: Graphics.X11.Types Skipping X11 package So apparently it can't locate file for -lX11. This is wierd as I have installed both XCode 2.4 and X11. On my harddisk there is a directory /usr/X11R6 with lots of stuff in it. I suspect that there is some kind of argument that can be supplied to the comfigure or make commands, but I can't guess it. Perhaps some of you know the answer. The complete log files of configure and make can be found at http://emilhedevang.googlepages.com/haskell/. From Emil Hedevang