/usr/bin/ld: cannot find -lmpi_usempi
/usr/bin/ld: cannot find -lmpi_mpifh
/usr/bin/ld: cannot find -lmpi
collect2: error: ld returned 1 exit status
make: *** [mcp2_mpi] Error 1

$ ld -lmpi_usempi --verbose
attempt to open /usr/x86_64-linux-gnu/lib64/libmpi_usempi.so failed
attempt to open /usr/x86_64-linux-gnu/lib64/libmpi_usempi.a failed
attempt to open //usr/local/lib/x86_64-linux-gnu/libmpi_usempi.so failed
attempt to open //usr/local/lib/x86_64-linux-gnu/libmpi_usempi.a failed
attempt to open //usr/local/lib64/libmpi_usempi.so failed
attempt to open //usr/local/lib64/libmpi_usempi.a failed
attempt to open //lib/x86_64-linux-gnu/libmpi_usempi.so failed
attempt to open //lib/x86_64-linux-gnu/libmpi_usempi.a failed
attempt to open //lib64/libmpi_usempi.so failed
attempt to open //lib64/libmpi_usempi.a failed
attempt to open //usr/lib/x86_64-linux-gnu/libmpi_usempi.so failed
attempt to open //usr/lib/x86_64-linux-gnu/libmpi_usempi.a failed
attempt to open //usr/lib64/libmpi_usempi.so failed
attempt to open //usr/lib64/libmpi_usempi.a failed
attempt to open //usr/local/lib/libmpi_usempi.so failed
attempt to open //usr/local/lib/libmpi_usempi.a failed
attempt to open //lib/libmpi_usempi.so failed
attempt to open //lib/libmpi_usempi.a failed
attempt to open //usr/lib/libmpi_usempi.so failed
attempt to open //usr/lib/libmpi_usempi.a failed
ld: cannot find -lmpi_usempi

/usr/local/openmpi/lib:
    libopen-rte.so.7 -> libopen-rte.so.7.0.3
    libmpi_mpifh.so.2 -> libmpi_mpifh.so.2.3.0
    libopen-trace-format.so.1 -> libopen-trace-format.so.1.0.0
    libmpi_cxx.so.1 -> libmpi_cxx.so.1.1.3
    liboshmem.so.1 -> liboshmem.so.1.0.0
    libvt-mpi.so.0 -> libvt-mpi.so.0.0.0
    libvt-hyb.so.0 -> libvt-hyb.so.0.0.0
    libvt-mt.so.0 -> libvt-mt.so.0.0.0
    libotfaux.so.0 -> libotfaux.so.0.0.0
    libvt-mpi-unify.so.0 -> libvt-mpi-unify.so.0.0.0
    libopen-pal.so.6 -> libopen-pal.so.6.1.1
    libmpi_usempi.so.1 -> libmpi_usempi.so.1.3.0
    libmpi.so.1 -> libmpi.so.1.5.0
    libvt.so.0 -> libvt.so.0.0.0
    libmca_common_sm.so.4 -> libmca_common_sm.so.4.0.3
    libompitrace.so.0 -> libompitrace.so.0.0.0

/usr/bin/ld: cannot find -lmpi_usempi
/usr/bin/ld: cannot find -lmpi_mpifh
/usr/bin/ld: cannot find -lmpi
collect2: error: ld returned 1 exit status
make: *** [mcp2_mpi] Error 1