[EternalSeekerX]

Hello everyone,


So has anyone run into this issue?

+ wmake libso parMetisDecomp
/usr/bin/ld: cannot find -lmpi
collect2: error: ld returned 1 exit status
make: *** [/home/si/.root/opt/OpenFOAM/foam/foam-extend-4.0/wmake/Makefile:188: /home/si/.root/opt/OpenFOAM/foam/foam-extend-4.0/lib/linux64GccDPOpt/libparMetisDecomp.so] Error 1

I have systemmpi specified and mpicc works fine though? Why can't ld find mpi?

[olesen]

Originally Posted by EternalSeekerX

Hello everyone,


So has anyone run into this issue?

+ wmake libso parMetisDecomp
/usr/bin/ld: cannot find -lmpi
collect2: error: ld returned 1 exit status
make: *** [/home/si/.root/opt/OpenFOAM/foam/foam-extend-4.0/wmake/Makefile:188: /home/si/.root/opt/OpenFOAM/foam/foam-extend-4.0/lib/linux64GccDPOpt/libparMetisDecomp.so] Error 1

I have systemmpi specified and mpicc works fine though? Why can't ld find mpi?

Not much to go on. Wish to tell us more about operating system etc?

[saladbowl]

Originally Posted by EternalSeekerX

Hello everyone,


So has anyone run into this issue?

+ wmake libso parMetisDecomp
/usr/bin/ld: cannot find -lmpi
collect2: error: ld returned 1 exit status
make: *** [/home/si/.root/opt/OpenFOAM/foam/foam-extend-4.0/wmake/Makefile:188: /home/si/.root/opt/OpenFOAM/foam/foam-extend-4.0/lib/linux64GccDPOpt/libparMetisDecomp.so] Error 1

I have systemmpi specified and mpicc works fine though? Why can't ld find mpi?

Indeed, I have.

OF=foam-extend-4.1
gcc=9.3.0
MPI=openmpi-4.0.4
OS=CentOS Stream 8
WM_MPLIB=SYSTEMOPENMPI

My ugly fix was to change the following line in src/decompositionMethods/parMetisDecomp/Make/options

-L$(OPENMPI_DIR)/lib -lmpi

to

-L$(MPI_ARCH_PATH)/lib -lmpi

I also noticed that the line

 include $(RULES)/mplib$(WM_MPLIB)

wasn't really doing anything because $RULES at this point was not set, which I verified by inserting an `echo $RULES` command in src/decompositionMethods/Allwmake just before `wmake libso parMetisDecomp` is called. After this modification the error went away and I could find lib/$WM_OPTIONS/libparMetisDecomp.so.