[petsc-dev] C++ error

[Mark Adams]

I am pretty sure I've removed stray includes (this did fix one
undefined reference), but I am not fixing DMPlexSNESComputeJacobianFEM.

DMPlexSNESComputeJacobianFEM is not called from any other source. Just
examples. And it is NOT called from the examples that fail:

/home/petsc/builds/KFnbdjNX/0/petsc/petsc/arch-ci-linux-cuda-single-cxx/lib/libpetscdm.so:
undefined reference to `DMPlexSNESComputeJacobianFEM'
collect2: error: ld returned 1 exit status
make[2]: *** [arch-ci-linux-cuda-single-cxx/tests/mat/tests/ex240] Error 1

https://gitlab.com/petsc/petsc/-/jobs/637821856
https://gitlab.com/petsc/petsc/-/jobs/637821886
https://gitlab.com/petsc/petsc/-/jobs/637821944

This seems to be saying that libpetscdm can not find my reference to
DMPlexSNESComputeJacobianFEM, called from in the lib.

Maybe DMPlexSNESComputeJacobianFEM is set to be external but I am now using
it internally and it would need to be declared differently?


On Mon, Jul 13, 2020 at 8:19 PM Mark Adams <mfadams at lbl.gov> wrote:

>
>
> On Mon, Jul 13, 2020 at 7:11 PM Satish Balay <balay at mcs.anl.gov> wrote:
>
>> $ git grep DMPlexLandFormLandau_Internal
>> include/petsc/private/dmpleximpl.h:PETSC_INTERN PetscErrorCode
>> DMPlexLandFormLandau_Internal(Vec, Mat, const PetscInt, void *);
>> src/dm/impls/plex/landau/plexland.c:  DMPlexLandFormLandau_Internal -
>> Evaluates Jacobian matrix.
>> src/dm/impls/plex/landau/plexland.c:PetscErrorCode
>> DMPlexLandFormLandau_Internal(Vec a_X, Mat JacP, const PetscInt dim, void
>> *a_ctx)
>> src/ts/utils/dmplexts.c:PETSC_INTERN PetscErrorCode
>> DMPlexLandFormLandau_Internal(Vec, Mat, const PetscInt, void *);
>> src/ts/utils/dmplexts.c:    ierr =
>> DMPlexLandFormLandau_Internal(X,ctx->J,dim,(void*)ctx);CHKERRQ(ierr);
>> src/ts/utils/dmplexts.c:    ierr =
>> DMPlexLandFormLandau_Internal(X,ctx->J,dim,(void*)ctx); CHKERRQ(ierr);
>>
>>
>> You'll need the PETSC_EXTERN in include/petsc/private/dmpleximpl.h  and
>> remove the duplicate prototype listing from src/ts/utils/dmplexts.c
>>
>
> Thanks, the first error that I got was undefined again:
>
> arch-ci-linux-cuda-single-cxx/obj/ts/utils/dmplexts.o: In function
> `DMPlexLandIFunction':
> 2264 <https://gitlab.com/petsc/petsc/-/jobs/636864970#L2264>/home/petsc/builds/KFnbdjNX/0/petsc/petsc/src/ts/utils/dmplexts.c:266:
> undefined reference to `DMPlexLandFormLandau_Internal'
> 2265 <https://gitlab.com/petsc/petsc/-/jobs/636864970#L2265>arch-ci-linux-cuda-single-cxx/obj/ts/utils/dmplexts.o:
> In function `DMPlexLandIJacobian':
> 2266 <https://gitlab.com/petsc/petsc/-/jobs/636864970#L2266>/home/petsc/builds/KFnbdjNX/0/petsc/petsc/src/ts/utils/dmplexts.c:305:
> undefined reference to `DMPlexLandFormLandau_Internal'
> 2267 <https://gitlab.com/petsc/petsc/-/jobs/636864970#L2267>/usr/bin/ld:
> arch-ci-linux-cuda-single-cxx/lib/libpetscts.so.3.013.3: hidden symbol
> `DMPlexLandFormLandau_Internal' isn't defined
> 2268 <https://gitlab.com/petsc/petsc/-/jobs/636864970#L2268>/usr/bin/ld:
> final link failed: Bad value
> 2269 <https://gitlab.com/petsc/petsc/-/jobs/636864970#L2269>collect2:
> error: ld returned 1 exit status
> 2270 <https://gitlab.com/petsc/petsc/-/jobs/636864970#L2270>gmakefile:149:
> recipe for target 'arch-ci-linux-cuda-single-cxx/lib/libpetscts.so.3.013.3'
> failed
> 2271 <https://gitlab.com/petsc/petsc/-/jobs/636864970#L2271>make[3]: ***
> [arch-ci-linux-cuda-single-cxx/lib/libpetscts.so.3.013.3] Error 1
> 2272 <https://gitlab.com/petsc/petsc/-/jobs/636864970#L2272>make[3]: ***
> Waiting for unfinished jobs....
> 2273 <https://gitlab.com/petsc/petsc/-/jobs/636864970#L2273> FC
> arch-ci-linux-cuda-single-cxx/obj/tao/f90-mod/petsctaomod.o
> 2274 <https://gitlab.com/petsc/petsc/-/jobs/636864970#L2274>/home/petsc/builds/KFnbdjNX/0/petsc/petsc/lib/petsc/conf/rules:49:
> recipe for target 'libs' failed
>
>
> https://gitlab.com/petsc/petsc/-/jobs/636864970
>
>
> I'll try extern
>
>
>> Satish
>>
>>
>> > I tried to add code to DMPlexts.c and am getting this error:
>> >
>> > https://gitlab.com/petsc/petsc/-/jobs/636828148
>> >
>> > dmplexts.c:(.text+0x1a0f): undefined reference to
>> > `DMPlexLandFormLandau_Internal'
>> > 1648 <https://gitlab.com/petsc/petsc/-/jobs/636828148#L1648>
>> >
>> > with this code:
>> >
>> > PETSC_INTERN PetscErrorCode DMPlexLandFormLandau_Internal(Vec a_X, Mat
>> > JacP, const PetscInt dim, void *a_ctx);
>> > /*@
>> >   DMPlexLandIFunction
>> > @*/
>> > PetscErrorCode DMPlexLandIFunction(TS ts,PetscReal time_dummy,Vec X,Vec
>> > X_t,Vec F,void *actx)
>> > {
>> > .....
>> >     ierr =
>> > DMPlexLandFormLandau_Internal(X,ctx->J,dim,(void*)ctx);CHKERRQ(ierr);
>> >
>> > I tried with EXTERN also. Any ideas?
>> > Thanks,
>> > Mark
>> >
>>
>>
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