#This compiled and runs a C example just fine
mpif77 -Wall t1.c -o ex1 /usr/lib64/openmpi/lib/libscalapack.a /usr/lib64/openmpi/lib/libmpiblacs.a /usr/lib64/openmpi/lib/libmpiblacsCinit.a /usr/lib64/openmpi/lib/libmpiblacsF77init.a

#with C++ , note this is a C++ example from the web and it is not using the depreciated MPI C++ syntax rather the standard C syntax

mpif77 -Wall ex3.cpp -o ex3 /usr/lib64/openmpi/lib/libscalapack.a /usr/lib64/openmpi/lib/libmpiblacs.a /usr/lib64/openmpi/lib/libmpiblacsCinit.a /usr/lib64/openmpi/lib/libmpiblacsF77init.a -llapack -lblas -lm -lgfortran /usr/lib64/openmpi/lib/libmpiblacs.a -lstdc++

/tmp/ccHwpoGA.o: In function `MPI::Intracomm::Intracomm()':
ex3.cpp:(.text._ZN3MPI9IntracommC2Ev[_ZN3MPI9IntracommC5Ev]+0x14): undefined reference to `MPI::Comm::Comm()'
/tmp/ccHwpoGA.o: In function `MPI::Intracomm::Intracomm(ompi_communicator_t*)':
ex3.cpp:(.text._ZN3MPI9IntracommC2EP19ompi_communicator_t[_ZN3MPI9IntracommC5EP19ompi_communicator_t]+0x19): undefined reference to `MPI::Comm::Comm()'
/tmp/ccHwpoGA.o: In function `MPI::Op::Init(void (*)(void const*, void*, int, MPI::Datatype const&), bool)':
ex3.cpp:(.text._ZN3MPI2Op4InitEPFvPKvPviRKNS_8DatatypeEEb[_ZN3MPI2Op4InitEPFvPKvPviRKNS_8DatatypeEEb]+0x24): undefined reference to `ompi_mpi_cxx_op_intercept'
/tmp/ccHwpoGA.o:(.rodata._ZTVN3MPI3WinE[_ZTVN3MPI3WinE]+0x48): undefined reference to `MPI::Win::Free()'
/tmp/ccHwpoGA.o:(.rodata._ZTVN3MPI8DatatypeE[_ZTVN3MPI8DatatypeE]+0x78): undefined reference to `MPI::Datatype::Free()'
collect2: error: ld returned 1 exit status

#with Mpic++
mpic++ -Wall ex3.cpp -o ex3 /usr/lib64/openmpi/lib/libscalapack.a /usr/lib64/openmpi/lib/libmpiblacs.a /usr/lib64/openmpi/lib/libmpiblacsCinit.a /usr/lib64/openmpi/lib/libmpiblacsF77init.a -llapack -lblas -lm -lgfortran /usr/lib64/openmpi/lib/libmpiblacs.a -lstdc++

/usr/lib64/openmpi/lib/libmpiblacs.a(dgesd2d_.oo): In function `Cdgesd2d':
(.text+0x8e): undefined reference to `mpi_type_free_'
/usr/lib64/openmpi/lib/libmpiblacs.a(dgerv2d_.oo): In function `Cdgerv2d':
(.text+0x93): undefined reference to `mpi_type_free_'
/usr/lib64/openmpi/lib/libmpiblacs.a(dgebs2d_.oo): In function `Cdgebs2d':
(.text+0x133): undefined reference to `mpi_type_free_'
/usr/lib64/openmpi/lib/libmpiblacs.a(dgebs2d_.oo): In function `Cdgebs2d':
(.text+0x2ea): undefined reference to `mpi_bcast_'
/usr/lib64/openmpi/lib/libmpiblacs.a(dgebr2d_.oo): In function `Cdgebr2d':
(.text+0x13b): undefined reference to `mpi_type_free_'
/usr/lib64/openmpi/lib/libmpiblacs.a(dgebr2d_.oo): In function `Cdgebr2d':
(.text+0x2fb): undefined reference to `mpi_bcast_'
/usr/lib64/openmpi/lib/libmpiblacs.a(dgsum2d_.oo): In function `Cdgsum2d':
(.text+0x45a): undefined reference to `mpi_reduce_'
/usr/lib64/openmpi/lib/libmpiblacs.a(dgsum2d_.oo): In function `Cdgsum2d':
(.text+0x4e5): undefined reference to `mpi_allreduce_'
/usr/lib64/openmpi/lib/libmpiblacs.a(Cblacs_gridmap_.oo): In function `Cblacs_gridmap':
(.text+0x2dc): undefined reference to `mpi_comm_dup_'
/usr/lib64/openmpi/lib/libmpiblacs.a(Cblacs_gridmap_.oo): In function `Cblacs_gridmap':
(.text+0x2f0): undefined reference to `mpi_comm_rank_'
/usr/lib64/openmpi/lib/libmpiblacs.a(Cblacs_gridmap_.oo): In function `Cblacs_gridmap':
(.text+0x31f): undefined reference to `mpi_comm_split_'
/usr/lib64/openmpi/lib/libmpiblacs.a(Cblacs_gridmap_.oo): In function `Cblacs_gridmap':
(.text+0x33c): undefined reference to `mpi_comm_split_'
/usr/lib64/openmpi/lib/libmpiblacs.a(Cblacs_gridexit_.oo): In function `Cblacs_gridexit':
(.text+0x56): undefined reference to `mpi_comm_free_'
/usr/lib64/openmpi/lib/libmpiblacs.a(Cblacs_gridexit_.oo): In function `Cblacs_gridexit':
(.text+0x64): undefined reference to `mpi_comm_free_'
/usr/lib64/openmpi/lib/libmpiblacs.a(Cblacs_gridexit_.oo): In function `Cblacs_gridexit':
(.text+0x71): undefined reference to `mpi_comm_free_'
/usr/lib64/openmpi/lib/libmpiblacs.a(Cblacs_gridexit_.oo): In function `Cblacs_gridexit':
(.text+0x7f): undefined reference to `mpi_comm_free_'
/usr/lib64/openmpi/lib/libmpiblacs.a(Cblacs_barrier_.oo): In function `Cblacs_barrier':
(.text+0x4a): undefined reference to `mpi_barrier_'
/usr/lib64/openmpi/lib/libmpiblacs.a(Cblacs_barrier_.oo): In function `Cblacs_barrier':
(.text+0x62): undefined reference to `mpi_barrier_'
/usr/lib64/openmpi/lib/libmpiblacs.a(BI_Ssend.o): In function `BI_Ssend':
(.text+0x32): undefined reference to `mpi_send_'
/usr/lib64/openmpi/lib/libmpiblacs.a(BI_Srecv.o): In function `BI_Srecv':
(.text+0x41): undefined reference to `mpi_recv_'
/usr/lib64/openmpi/lib/libmpiblacs.a(BI_Asend.o): In function `BI_Asend':
(.text+0x56): undefined reference to `mpi_isend_'
/usr/lib64/openmpi/lib/libmpiblacs.a(BI_Asend.o): In function `BI_Asend':
(.text+0x86): undefined reference to `mpi_error_class_'
/usr/lib64/openmpi/lib/libmpiblacs.a(BI_Asend.o): In function `BI_Asend':
(.text+0x101): undefined reference to `mpi_isend_'
/usr/lib64/openmpi/lib/libmpiblacs.a(BI_Arecv.o): In function `BI_Arecv':
(.text+0x56): undefined reference to `mpi_irecv_'
/usr/lib64/openmpi/lib/libmpiblacs.a(BI_Arecv.o): In function `BI_Arecv':
(.text+0x86): undefined reference to `mpi_error_class_'
/usr/lib64/openmpi/lib/libmpiblacs.a(BI_Arecv.o): In function `BI_Arecv':
(.text+0x101): undefined reference to `mpi_irecv_'
/usr/lib64/openmpi/lib/libmpiblacs.a(BI_BeComb.o): In function `BI_BeComb':
(.text+0x17e): undefined reference to `mpi_sendrecv_'
/usr/lib64/openmpi/lib/libmpiblacs.a(BI_BlacsAbort.o): In function `BI_BlacsAbort':
(.text+0x3f): undefined reference to `mpi_abort_'
/usr/lib64/openmpi/lib/libmpiblacs.a(BI_BuffIsFree.o): In function `BI_BuffIsFree':
(.text+0x60): undefined reference to `mpi_waitall_'
/usr/lib64/openmpi/lib/libmpiblacs.a(BI_Pack.o): In function `BI_Pack':
(.text+0x76): undefined reference to `mpi_pack_'
/usr/lib64/openmpi/lib/libmpiblacs.a(BI_Pack.o): In function `BI_Pack':
(.text+0xe0): undefined reference to `mpi_pack_size_'
/usr/lib64/openmpi/lib/libmpiblacs.a(BI_GetMpiGeType.o): In function `BI_GetMpiGeType':
(.text+0x38): undefined reference to `mpi_type_vector_'
/usr/lib64/openmpi/lib/libmpiblacs.a(BI_GetMpiGeType.o): In function `BI_GetMpiGeType':
(.text+0x47): undefined reference to `mpi_type_commit_'
/usr/lib64/openmpi/lib/libmpiblacs.a(BI_MPI_F77_to_c_trans_comm.o): In function `BI_MPI_F77_to_c_trans_comm':
(.text+0x27): undefined reference to `mpi_comm_size_'
/usr/lib64/openmpi/lib/libmpiblacs.a(BI_MPI_F77_to_c_trans_comm.o): In function `BI_MPI_F77_to_c_trans_comm':
(.text+0x4c): undefined reference to `mpi_comm_group_'
/usr/lib64/openmpi/lib/libmpiblacs.a(BI_MPI_F77_to_c_trans_comm.o): In function `BI_MPI_F77_to_c_trans_comm':
(.text+0x65): undefined reference to `mpi_comm_group_'
/usr/lib64/openmpi/lib/libmpiblacs.a(BI_MPI_F77_to_c_trans_comm.o): In function `BI_MPI_F77_to_c_trans_comm':
(.text+0xa3): undefined reference to `mpi_group_translate_ranks_'
/usr/lib64/openmpi/lib/libmpiblacs.a(BI_MPI_F77_to_c_trans_comm.o): In function `BI_MPI_F77_to_c_trans_comm':
(.text+0xc3): undefined reference to `mpi_group_free_'
/usr/lib64/openmpi/lib/libmpiblacs.a(BI_MPI_F77_to_c_trans_comm.o): In function `BI_MPI_F77_to_c_trans_comm':
(.text+0xd2): undefined reference to `mpi_group_free_'
/usr/lib64/openmpi/lib/libmpiblacs.a(BI_TransUserComm.o): In function `BI_TransUserComm':
(.text+0xab): undefined reference to `mpi_comm_group_'
/usr/lib64/openmpi/lib/libmpiblacs.a(BI_TransUserComm.o): In function `BI_TransUserComm':
(.text+0xc7): undefined reference to `mpi_group_incl_'
/usr/lib64/openmpi/lib/libmpiblacs.a(BI_TransUserComm.o): In function `BI_TransUserComm':
(.text+0xe0): undefined reference to `mpi_comm_create_'
/usr/lib64/openmpi/lib/libmpiblacs.a(BI_TransUserComm.o): In function `BI_TransUserComm':
(.text+0xef): undefined reference to `mpi_group_free_'
/usr/lib64/openmpi/lib/libmpiblacs.a(BI_TransUserComm.o): In function `BI_TransUserComm':
(.text+0xfe): undefined reference to `mpi_group_free_'
/usr/lib64/openmpi/lib/libmpiblacs.a(bi_f77_mpi_attr_get.o): In function `bi_f77_mpi_attr_get_':
(.text+0x13): undefined reference to `mpi_attr_get_'
/usr/lib64/openmpi/lib/libmpiblacs.a(bi_f77_mpi_testall.o): In function `bi_f77_mpi_testall_':
(.text+0x13): undefined reference to `mpi_testall_'
/usr/lib64/openmpi/lib/libmpiblacs.a(dwalltime00_.o): In function `dwalltime00_':
(.text+0x7): undefined reference to `mpi_wtime_'
/usr/lib64/openmpi/lib/libmpiblacs.a(BI_Rsend.o): In function `BI_Rsend':
(.text+0x32): undefined reference to `mpi_rsend_'
/usr/lib64/openmpi/lib/libmpiblacsCinit.a(Cblacs_pinfo.o): In function `Cblacs_pinfo':
(.text+0xda): undefined reference to `mpi_comm_size_'
/usr/lib64/openmpi/lib/libmpiblacsCinit.a(Cblacs_pinfo.o): In function `Cblacs_pinfo':
(.text+0xf6): undefined reference to `mpi_comm_rank_'
collect2: error: ld returned 1 exit status