Build error on 10.6: Undefined symbols: "_gomp_thread_attr", referenced from: _gomp_run_sched_chunk in libgomp.a(env.o)

[barracuda156]

I am trying to build the latest commit from here on 10.6 for PPC, and get the following error:

Undefined symbols:
  "_gomp_thread_attr", referenced from:
      _gomp_run_sched_chunk in libgomp.a(env.o)
ld: symbol(s) not found
collect2: ld returned 1 exit status
make[3]: *** [test_apop] Error 1
make[2]: *** [check-am] Error 2
make[1]: *** [check-recursive] Error 1
make: *** [distcheck] Error 1

---------------------

OK, built. From the apophenia-1.0 directory, you can run: make && sudo make install
--->  Building apophenia
Executing:  cd "/opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_math_apophenia/apophenia/work/apophenia-113671c16afa1724f9f225acdc88e838770071ce" && /usr/bin/make -j4 -w all 
make: Entering directory `/opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_math_apophenia/apophenia/work/b-k-apophenia-113671c'
make: *** No rule to make target `all'.  Stop.

Any idea how to fix this?

[b-k]

It looks like the script is looking for the OpenMP library for threading. Is that installed?

If you'd like to work on adding a check to autoconf, we could perhaps work on that.

[barracuda156]

It looks like the script is looking for the OpenMP library for threading. Is that installed?
If you’d like to work on adding a check to autoconf, we could perhaps work on that.

@b-k libgomp is a part of gcc, isn’t it? I need to check however if that library actually builds for PowerPC. But I don’t recall any similar errors with other ports, and I have built many.

I am eager to add a check, but at the moment I am not sure how exactly to do that.

[barracuda156]

@b-k Will something like this help? https://cta-redmine.irap.omp.eu/issues/420#note-3
There is an autoconf check.

[barracuda156]

It looks like the script is looking for the OpenMP library for threading. Is that installed?

@b-k So yes, GCC adds it automatically when relevant flag is passed, but apparently it is broken with Apple gcc-4.2. Like here: https://cta-redmine.irap.omp.eu/journals/diff/1140?detail_id=1665

When using gcc-12, there is no libgomp-related error anymore.

P. S. mysql argument passing remains broken, I had to patch mysql out to fix the failure.