Just remove the -L and -l arguments -- OMPI's "mpif90" (and other
wrapper compilers) will do all that magic for you.
Many -L/-l arguments in MPI application Makefiles are throwbacks to
older versions of MPICH wrapper compilers that didn't always work
properly. Those days are long gone; most (all?) MPI wrapper
compilers do not need you to specify -L/-l these days.
On Jun 10, 2007, at 3:08 PM, Jeff Pummill wrote:
Maybe the "dumb question" of the week, but here goes...
I am trying to compile a piece of code (NPB) under OpenMPI and I am
having a problem with specifying the right library. Possibly
something I need to define in a LD_LIBRARY_PATH statement?
Using Gnu mpich, the line looked like this...
FMPI_LIB = -L/opt/mpich/gnu/lib/ -lmpich
I tried to replace this with...
FMPI_LIB = -L/usr/lib/openmpi/ -llibmpi
to which the make responded...
mpif90 -O -o ../bin/cg.A.2 cg.o ../common/print_results.o ../common/
randdp.o ../common/timers.o -L/usr/lib/openmpi/ -llibmpi
/usr/bin/ld: cannot find -llibmpi
collect2: ld returned 1 exit status
Wrong library file? Setup or path issue?
--
Jeff F. Pummill
Senior Linux Cluster Administrator
University of Arkansas
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Jeff Squyres
Cisco Systems
