> Basically I want to build a tool that does some processing of NSImages > (but never displays them). > > Okay, but when I use the following make file: > > include $(GNUSTEP_MAKEFILES)/common.make > > TOOL_NAME = ObjectiveC > ObjectiveC_OBJC_FILES = ObjectiveC.m > > include $(GNUSTEP_MAKEFILES)/tool.make > > I get a bunch of linker messages: > > Making all for tool ObjectiveC... > Linking tool ObjectiveC ... > ./shared_obj/ObjectiveC.o: In function `main': > ObjectiveC.m:(.text+0x5b4): undefined reference to > `NSFontAttributeName' > ObjectiveC.m:(.text+0x647): undefined reference to > `NSForegroundColorAttributeName' > ./shared_obj/ObjectiveC.o:(.data.rel+0x4): undefined reference to > `__objc_class_name_NSApplication' > ./shared_obj/ObjectiveC.o:(.data.rel+0x8): undefined reference to > `__objc_class_name_NSWindow' > ./shared_obj/ObjectiveC.o:(.data.rel+0xc): undefined reference to > `__objc_class_name_NSView' > ./shared_obj/ObjectiveC.o:(.data.rel+0x10): undefined reference to
As you can see, you're linker failures are all in AppKit classes. The makefile scripts for tools (tool.make) does not attempt to link against the AppKit library (gnustep-gui), hence all the "undefined references". I think there is a macro defined called $(GUI_LIBS) which can be added to the linker command line which references gnustep-gui. Check the makefile manual for more details (you put in a line like ADDITIONAL_TOOL_LIBS = $(GUI_LIBS) ). Alternatively, you could try and link it as an applications (application.make), but as you said, this is purely a tool and not a application. I also think that service.make may cause linking against gnustep-gui (I'm not sure though). I wrote some additions quite a while ago to the makefile manual which details alot of this stuff at http://gnustep-docs.sf.net. Which reminds me, does gnustep want these additions? I have copyright assignment. There is also substantial AppKit documentation there which I'm currently not maintaining. Cheers Chris carmstrong at fastmail [dot] com [dot] au -- Christopher Armstrong [EMAIL PROTECTED] _______________________________________________ Discuss-gnustep mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnustep
