Hi, I'm installing Gtk2Hs on my Ubuntu 7.10. I have ghc 6.8.2 compiled with the extra libs in my home directory with the configuration "./configure --prefix=/home/wy/Programs" and it worked well. Then I configured gtk2hs in the same way and it compiled and installed with no problem. But when I tried to compile the demo program with any of the following command line: # ghc --make World.hs # ghc --make World.hs `pkg-config --cflags --libs gtk+-2.0` # ghc --make World.hs `pkg-config --cflags --libs gtk+-2.0` -L/home/wy/Programs/lib/gtk2hs It give some linking errors: Linking World ... World.o: In function `r2JR_info': (.text+0x46): undefined reference to `gtkzm0zi9zi12zi1_GraphicsziUIziGtkziAbstractziWidget_widgetShowAll_closure' World.o: In function `r2JR_info': (.text+0x4d): undefined reference to `gtkzm0zi9zi12zi1_GraphicsziUIziGtkziTypes_zdf550_closure' World.o: In function `r2JT_info': (.text+0xaa): undefined reference to `gtkzm0zi9zi12zi1_GraphicsziUIziGtkziAbstractziContainer_containerChild_closure' World.o: In function `r2JT_info': (.text+0xb1): undefined reference to `gtkzm0zi9zi12zi1_GraphicsziUIziGtkziTypes_zdf662_closure' World.o: In function `r2JT_info': (.text+0xb8): undefined reference to `gtkzm0zi9zi12zi1_GraphicsziUIziGtkziTypes_zdf550_closure' ... collect2: ld returned 1 exit status The first command worked well with the ghc 6.6.1 came with ubuntu. I tried to uninstall my old gtk package, but this doesn't help. Any ideas? -- Yin Wang