[petsc-dev] petsc/master: unable to link in C++ with last night PETSC_WITH_EXTERNAL_LIB variable changes

[Éric Chamberland]

Hi,

we used to link our c++ code with PETSc using PETSC_WITH_EXTERNAL_LIB 
variable defined in $PETSC_DIR/lib/petsc/conf/petscvariables and 
everything was fine until this night.

It seems some libs have vanished from this variable, see the diff here:

  -lptscotcherr
  -lesmumps
  -lscotch
  -lscotcherr
  -lm
  -lX11
+-lstdc++
  -ldl
  -lmpi_usempi
  -lmpi_mpifh
  -lmpi
  -lgfortran
  -lm
  -lgfortran
  -lm
  -lgcc_s
  -lquadmath
  -lpthread
--ldl
--lmpi_cxx
--lmpi
--lstdc++
--lm
--lgcc_s
--lpthread
  -lrt
  -lm
  -lpthread
  -lz
+-lstdc++
  -ldl


causing these errors at link phase for us:

/pmi/cmpbib/compilation_BIB_gcc_redhat_petsc-master_debug/COMPILE_AUTO/GIREF/obj/dev/StatistiqueMemoire.o: 
In function `MPI::Op::Init(void (*)(void const*, void*, int, 
MPI::Datatype const&), bool)':
/opt/openmpi-1.10.2/include/openmpi/ompi/mpi/cxx/op_inln.h:122: undefined reference to `ompi_mpi_cxx_op_intercept'
/pmi/cmpbib/compilation_BIB_gcc_redhat_petsc-master_debug/COMPILE_AUTO/GIREF/obj/dev/StatistiqueMemoire.o: 
In function `MPI::Intracomm::Create_graph(int, int const*, int const*, 
bool) const':
/opt/openmpi-1.10.2/include/openmpi/ompi/mpi/cxx/intracomm.h:25: undefined reference to `MPI::Comm::Comm()'
/pmi/cmpbib/compilation_BIB_gcc_redhat_petsc-master_debug/COMPILE_AUTO/GIREF/obj/dev/StatistiqueMemoire.o: 
In function `MPI::Intercomm::Merge(bool) const':
/opt/openmpi-1.10.2/include/openmpi/ompi/mpi/cxx/intracomm_inln.h:23: undefined reference to `MPI::Comm::Comm()'
/pmi/cmpbib/compilation_BIB_gcc_redhat_petsc-master_debug/COMPILE_AUTO/GIREF/obj/dev/StatistiqueMemoire.o: 
In function `MPI::Intracomm::Split(int, int) const':
/opt/openmpi-1.10.2/include/openmpi/ompi/mpi/cxx/intracomm_inln.h:23: undefined reference to `MPI::Comm::Comm()'
/pmi/cmpbib/compilation_BIB_gcc_redhat_petsc-master_debug/COMPILE_AUTO/GIREF/obj/dev/StatistiqueMemoire.o: 
In function `MPI::Intracomm::Create(MPI::Group const&) const':
/opt/openmpi-1.10.2/include/openmpi/ompi/mpi/cxx/intracomm_inln.h:23: undefined reference to `MPI::Comm::Comm()'
/pmi/cmpbib/compilation_BIB_gcc_redhat_petsc-master_debug/COMPILE_AUTO/GIREF/obj/dev/StatistiqueMemoire.o: 
In function `MPI::Intracomm::Clone() const':

Is this a normal and definitive change or an unwanted/unobserved bug?

Thanks,

Eric

ps: here are the logs:

this night:

---------

http://www.giref.ulaval.ca/~cmpgiref/petsc-master-debug/2018.02.10.02h00m01s_configure.log
http://www.giref.ulaval.ca/~cmpgiref/petsc-master-debug/2018.02.10.02h00m01s_make.log


a day before:
------------

http://www.giref.ulaval.ca/~cmpgiref/petsc-master-debug/2018.02.09.02h00m02s_configure.log
http://www.giref.ulaval.ca/~cmpgiref/petsc-master-debug/2018.02.09.02h00m02s_make.log


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