[petsc-dev] C++ error

[Mark Adams]

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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