Since you are wanting to use the ng-gnu-gnu library combo
(clang/libobjc2) rather than the standard gnu-gnu-gnu library combo
(gcc/gnu-libobjc), you first configure gnustep-make that way (you
didn't say whether you did that) and install it.
Next, you have to source GNUstep.sh to set up your environment, then
build/install libobjc2 (this is more complicated) so that it installs in
the correct place (if you configured gnustep-make with --layout=gnustep
this is NOT /usr/local since the gnustep layout uses /usr/GNUstep/...).
However, the libobjc2 code should use the information provided by
GNUstep.sh to find the correwct place whichever filesystem layout you chose.
Next you build/install gnustep-base (then gnustep-gui, then
gnustep-back). None of these normally need any special configure options
unless libraries that they depend on are not present in the standard
locations.
For each stage, the configure script generates a config.log file which
records what was done and (if it failed) why it failed.
Finally, your compile command appears to have a typo; I expect you
meant to use -lobjc
On 04/01/2026 18:49, Mick wrote:
Hello.
Once again in my life, I am installing gnustep, but every time after a lot of
time, so I have to learn from scratch the procedure.
This time on my own LinuxMint 22, and I am in trouble configuring base.
I downloaded gnustep-make-2.9.3.tar.gz, unpacked and configured to use
clang compiler (14) and --layout=gnustep.
Than I got libobjc2 from github repo, compiled and installed under
/usr/local. Finally I added /usr/local/lib in a file under /etc/ld.so.conf.d/,
and launched ldconfig.
At the base step the configure failed "checking whether objc really
works... no". So I tried to write a very simple program in objc
(containing a class definition, though), and it fails to link with
error: "/usr/bin/ld: /tmp/testobjc-ba4d71.o:(.data.rel.ro+0x0):
undefined reference to `__objc_class_name_Object'".
Any idea of what can I miss?
I compiled the program with "clang -o testobjc testobjc.m
-L/usr/local/lib -mobjc", so I am quite sure I am pointing the right
library.
--
Mick
