Re: Problems building gnustep-base on cygwin

[Alex Perez]

Volker Hilsenstein wrote:
> Hi
>
> Finally managed to build all the core packages (make, base, gui, backend) under
> cygwin.
> However, something seems to be wrong with my installation as I can't
> compile any of the
> apps I tried (Gorm, Projectcenter,  Workspace).
> I get lots of undefined references during the linking.
> Here just a few examples from building ProjectCenter:
>
> undefined reference to `_objc_get_class'
> ./shared_obj/PCTextFinder+UInterface.o(.text+0x1abc):PCTextFinder+UInterface.m:
> undefined reference to `_objc_msg_lookup'
> ./shared_obj/PCTextFinder+UInterface.o(.text+0x1add):PCTextFinder+UInterface.m:
> undefined reference to `_objc_msg_lookup'
> ./shared_obj/PCTextFinder+UInterface.o(.text+0x1b20):PCTextFinder+UInterface.m:
> undefined reference to `_objc_msg_lookup'
> ./shared_obj/PCTextFinder+UInterface.o(.text+0x1b4b):PCTextFinder+UInterface.m:
> undefined reference to `_objc_msg_lookup'
> ./shared_obj/PCTextFinder+UInterface.o(.text+0x1b76):PCTextFinder+UInterface.m:
> undefined reference to `_objc_msg_lookup'
> ./shared_obj/PCTextFinder+UInterface.o(.text+0x1ba1):PCTextFinder+UInterface.m:
> more undefined references to `_objc_msg_lookup' follow
> ./shared_obj/PCTextFinder+UInterface.o(.text+0x1d1e):PCTextFinder+UInterface.m:
> undefined reference to `___objc_exec_class'
> ./shared_obj/PCTextFinder+UInterface.o(.data+0x634):PCTextFinder+UInterface.m: u
> ndefined reference to `___objc_class_name_NSConstantString'
> ./shared_obj/PCTextFinder+UInterface.o(.data+0x638):PCTextFinder+UInterface.m: u
> ndefined reference to `___objc_class_name_NSPanel'
> ./shared_obj/PCTextFinder+UInterface.o(.data+0x63c):PCTextFinder+UInterface.m: u
> ndefined reference to `___objc_class_name_NSTextField'
> ./shared_obj/PCTextFinder+UInterface.o(.data+0x640):PCTextFinder+UInterface.m: u
> ndefined reference to `___objc_class_name_NSBox'
> ./shared_obj/PCTextFinder+UInterface.o(.data+0x644):PCTextFinder+UInterface.m: u
> ndefined reference to `___objc_class_name_NSButtonCell'
> ./shared_obj/PCTextFinder+UInterface.o(.data+0x648):PCTextFinder+UInterface.m: u
> ndefined reference to `___objc_class_name_NSMatrix'
> collect2: ld returned 1 exit status
> dllwrap: gcc exited with status 1
> make[2]: *** [ProjectCenter.dll] Error 1
> make[1]: *** [ProjectCenter.all.framework.variables] Error 2
> make[1]: Leaving directory `/cygdrive/c/GNUStep/Build/ProjectCenter-0.4.2/Librar
> y'
> make: *** [internal-all] Error 2
>
>
> Does that indicate a problem with libobjc (not all symbols present) ?
> But I how could I have built the core packages if something were wrong
> with my libobjc ?

No, this is a known problem with GNUstep-make. There's a patch for it, 
but it can't be applied until the FSF has a copyright assignment on file 
from the author of the patch.