Fails to link:

 Linking subproject ExtraSTX ...
/usr/bin/ld: cannot find -lobjc: No such file or directory
/usr/bin/ld: cannot find -lpthread: No such file or directory
/usr/bin/ld: cannot find -lobjc: No such file or directory
/usr/bin/ld: cannot find -lobjc: No such file or directory
/usr/bin/ld: cannot find -lobjc: No such file or directory
/usr/bin/ld: cannot find -lobjc: No such file or directory
/usr/bin/ld: cannot find -lobjc: No such file or directory
/usr/bin/ld: cannot find -lobjc: No such file or directory
/usr/bin/ld: cannot find -lobjc: No such file or directory
clang-15: error: linker command failed with exit code 1 (use -v to see invocation)

But command line looks ok:

/usr/pkg/bin/clang -Wl,-zrelro -Wl,-znow -Qunused-arguments -fcommon -nostdlib -Wl,-r -L/scratch/wip/SOPE5/work/.buildlink/lib -L/scratch/wip/SOPE5/work/.buildlink/share/GNUstep/lib -Wl,-rpath,/usr/pkg/lib -Wl,-zrelro -Wl,-znow -lobjc -lpthread -lobjc -rdynamic -lobjc -rdynamic -lobjc -rdynamic -lobjc -rdynamic -lobjc -rdynamic -lobjc -rdynamic -lobjc -rdynamic -Wl,-rpath,/usr/pkg/lib -Wl,-zrelro -Wl,-znow -pthread -fexceptions -o ./obj/subproject.o obj/ExtraSTX.obj/NSString+STX.m.o obj/ExtraSTX.obj/StructuredLine.m.o obj/ExtraSTX.obj/StructuredStack.m.o obj/ExtraSTX.obj/StructuredText.m.o -Qunused-arguments -fstack-protector-all -I/scratch/wip/SOPE5/work/.buildlink/include

and libobjc is linked and exists:
# ll -L /scratch/wip/SOPE5/work/.buildlink/lib/libobjc.so
-rwxr-xr-x  1 root  wheel  717656 Jan 21 10:52 /scratch/wip/SOPE5/work/.buildlink/lib/libobjc.so
