Perhaps the easy fix is to build PETSc as shared libraries. [this is the
default anyway]
However wrt pkgconfig:
>>>>
$ cat arch-linux-c-debug/lib/pkgconfig/petsc.pc
prefix=/home/balay/petsc/arch-linux-c-debug
exec_prefix=${prefix}
includedir=${prefix}/include
libdir=${prefix}/lib
ccompiler=mpicc
cflags_extra=-fPIC -Wall -Wwrite-strings -Wno-unknown-pragmas
-Wno-stringop-overflow -fstack-protector -fvisibility=hidden -g3 -O0
cflags_dep=-MMD -MP
ldflag_rpath=-Wl,-rpath,
cxxcompiler=mpicxx
cxxflags_extra=-Wall -Wwrite-strings -Wno-strict-aliasing -Wno-unknown-pragmas
-fstack-protector -fvisibility=hidden -g -O0 -std=gnu++17 -fPIC
fcompiler=mpif90
fflags_extra=-fPIC -Wall -ffree-line-length-0 -Wno-unused-dummy-argument -g -O0
Name: PETSc
Description: Library to solve ODEs and algebraic equations
Version: 3.16.99
Cflags: -I${includedir} -I/home/balay/petsc/include
Libs: -L${libdir} -lpetsc
Libs.private: -L/home/balay/soft/mpich-3.4.2/lib
-L/usr/lib/gcc/x86_64-redhat-linux/11 -llapack -lblas -lm -lX11 -lstdc++ -ldl
-lmpifort -lmpi -lgfortran -lm -lgfortran -lm -lgcc_s -lquadmath -lstdc++ -ldl
<<<<
i.e 'Libs' provides the petsc library [usable when built as shared] - and
'Libs.private' provides all the dependencies [that are required in a static
build]
Satish
On Tue, 22 Feb 2022, Palmer, Bruce J via petsc-users wrote:
> Hi,
>
> We recently switched the CMake configuration on our GridPACK application to
> use the PkgConfig utility instead of Jeb Brown’s FindPETSc.cmake module. This
> seems to work on a number of platforms but it is failing to link on others.
> It appears that the build cannot find the LAPACK and BLAS libraries. The
> PETSc library I’m linking to (v3.16.3) was configured with
> -download-f2cblaslapack so it should have these libraries, but when I try and
> link one of the test applications in GridPACK I get the errors
>
>
> /share/apps/gcc/6.1.0/bin/g++ -pthread -g -rdynamic
> CMakeFiles/greetings.dir/test/greetings.cpp.o -o greetings
> -Wl,-rpath,/qfs/projects/ops/rh6/openmpi/3.0.1/gcc/6.1.0/lib
> ../math/libgridpack_math.a libgridpack_parallel.a
> ../timer/libgridpack_timer.a ../environment/libgridpack_environment.a
> ../math/libgridpack_math.a
> /pic/projects/gridpack/software/boost_1_65_0/lib/libboost_mpi.a
> /pic/projects/gridpack/software/boost_1_65_0/lib/libboost_serialization.a
> /pic/projects/gridpack/software/boost_1_65_0/lib/libboost_random.a
> /pic/projects/gridpack/software/boost_1_65_0/lib/libboost_filesystem.a
> /pic/projects/gridpack/software/boost_1_65_0/lib/libboost_system.a
> /pic/projects/gridpack/software/ga-5.7/build_pr/lib/libga++.a
> /pic/projects/gridpack/software/ga-5.7/build_pr/lib/libga.a
> /pic/projects/gridpack/software/ga-5.7/build_pr/lib/libarmci.a -lrt
> /usr/lib64/librt.so /usr/lib64/libdl.so
> /qfs/projects/ops/rh6/openmpi/3.0.1/gcc/6.1.0/lib/libmpi.so
> ../timer/libgridpack_timer.a libgri
dpack_pa
rallel.a ../configuration/libgridpack_configuration.a
/pic/projects/gridpack/software/petsc-3.16.3/linux-openmpi-gnu-cxx-complex-opt/lib/libpetsc.a
>
> /pic/projects/gridpack/software/petsc-3.16.3/linux-openmpi-gnu-cxx-complex-opt/lib/libpetsc.a(zstart.o):
> In function `petscinitializef_':
>
> /pic/projects/gridpack/software/petsc-3.16.3/src/sys/objects/ftn-custom/zstart.c:280:
> undefined reference to `mpi_init_'
>
> /pic/projects/gridpack/software/petsc-3.16.3/linux-openmpi-gnu-cxx-complex-opt/lib/libpetsc.a(baijfact.o):
> In function `MatSolve_SeqBAIJ_N':
>
> /pic/projects/gridpack/software/petsc-3.16.3/src/mat/impls/baij/seq/baijfact.c:1462:
> undefined reference to `zgemv_'
>
> /pic/projects/gridpack/software/petsc-3.16.3/src/mat/impls/baij/seq/baijfact.c:1475:
> undefined reference to `zgemv_'
>
> /pic/projects/gridpack/software/petsc-3.16.3/src/mat/impls/baij/seq/baijfact.c:1478:
> undefined reference to `zgemv_'
>
> /pic/projects/gridpack/software/petsc-3.16.3/linux-openmpi-gnu-cxx-complex-opt/lib/libpetsc.a(baijfact.o):
> In function `MatSolve_SeqBAIJ_N_NaturalOrdering':
>
> /pic/projects/gridpack/software/petsc-3.16.3/src/mat/impls/baij/seq/baijfact.c:1407:
> undefined reference to `zgemv_'
>
> /pic/projects/gridpack/software/petsc-3.16.3/src/mat/impls/baij/seq/baijfact.c:1420:
> undefined reference to `zgemv_'
>
> /pic/projects/gridpack/software/petsc-3.16.3/linux-openmpi-gnu-cxx-complex-opt/lib/libpetsc.a(baijfact.o):/pic/projects/gridpack/software/petsc-3.16.3/sr
>
> I suspect that the reason it worked for others and not for me is that they
> had viable blas and lapack libraries in their path and I don’t. Is there
> anything special you need to do to make sure that the build is pointed at the
> libraries that get created with the -download-f2cblaslapack option?
>
> Bruce Palmer
>
