[petsc-dev] PETSC_WITH_EXTERNAL_LIB is not including the correct gcc directories

[Balay, Satish]

You can check 'ifort -v test.F' - to see how its using gcc internally.

configure.log will have the details on where the path is coming from. [you can send us this log]

PETSc configure attempts to determine the compiler libraries - and this part could show
up with some paths that are not needed.

Workaround is to manually specify these paths to petsc configure - so that it doesn't
try to determine from 'ifort -v' - and pick up unneed stuff.

./configure LIBS=/path_to/libifcore.a

[but then ifort changes this from libifcore.a to libifcoremt.a - if openmp is enabled]

Satish


On Tue, 23 Oct 2018, Hector E Barrios Molano wrote:

> Thank you Satish for your response,
> 
> Yes I am intended to use ifort with gcc.
> 
> I changed ifort versions to one that does not include tbb.
> 
> However, PETSc is still including -L/usr/lib/gcc/x86_64-redhat-linux/4.1.2 in
> petscvariables, attached you will find an updated petscvariables file.
> 
> ifort is not including any gcc, neither there is reference to this directory
> in $PATH or $LD_LIBRARY_PATH, why is PETSc still including it?
> 
> Thanks for your help,
> 
> Hector
> 
> 
> On 10/18/18 5:28 PM, Balay, Satish wrote:
> >> -L/share/apps/intel3/compilers_and_libraries_2016.2.181/linux/tbb/lib/intel64/gcc4.1
> >> -L/usr/lib/gcc/x86_64-redhat-linux/4.1.2
> > Its likely the gcc-4.1 stuff is coming from ifort.
> >
> > Did you intend to use ifort with gcc? [instead of gfortran?]
> >
> > Satish
> >
> > On Thu, 18 Oct 2018, Hector E Barrios Molano wrote:
> >
> >> Hi PETSc Experts!
> >>
> >> I am building PETSc from the git repository and it is strange that once
> >> PETSc
> >> is installed the petscvariables (PETSC_WITH_EXTERNAL_LIB) file shows a
> >> different gcc library path that the one from the compiler used and the one
> >> defined in LD_LIBRARY_PATH. This is causing me troubles when using PETSc
> >> with
> >> other library that requires libstdc++
> >>
> >> Here is the command used to build PETSc:
> >> ./configure --prefix=$DEV_lib_dir/petsc_git-debug
> >> --PETSC_DIR=/home/hector/dwnld_prog/petsc --PETSC_ARCH=linux-intel-debug
> >> --CC=mpicc --FC=mpifort --CXX=mpicxx --with-openmp=1 --with-valgrind=1
> >> --with-valgri
> >> nd-dir=/home/hector/installed --with-parmetis-dir=$DEV_lib_dir/parmetis/
> >> --with-metis-dir=$DEV_lib_dir/parmetis/
> >> --with-zoltan-dir=$DEV_lib_dir/zoltan/
> >> --with-hypre-dir=$DEV_lib_dir/hypre --download-ptscotch
> >> --with-blas-lapack-lib=\[${MKLR
> >> OOT}/lib/intel64/libmkl_intel_lp64.a,${MKLROOT}/lib/intel64/libmkl_core.a,${MKLROOT}/lib/intel64/libmkl_intel_thread.a\]
> >> --with-scalapack-include=${MKLROOT}/include
> >> --with-scalapack-lib=\[${MKLROOT}/lib/intel64/libmkl_scalapack_lp64.a,${MK
> >> LROOT}/lib/intel64/libmkl_blacs_intelmpi_lp64.a\] --with-shared-libraries=0
> >> --FC_LINKER_FLAGS="-qopenmp -qopenmp-link static" --FFLAGS="-qopenmp
> >> -qopenmp-link static" --LIBS="-Wl,--start-group
> >> ${MKLROOT}/lib/intel64/libmkl_intel_lp64.a ${M
> >> KLROOT}/lib/intel64/libmkl_core.a
> >> ${MKLROOT}/lib/intel64/libmkl_intel_thread.a
> >> -Wl,--end-group -liomp5 -ldl -lpthread -lm"
> >>
> >> Here is LD_LIBRARY_PATH:
> >> echo $LD_LIBRARY_PATH
> >> /home/hector/installed/gcc-6.1/lib64:/home/hector/installed/gcc-5.1/lib64://home/hector/installed/lib:/home/hector/installed/libraries_intel/openmpi/lib:/share/apps/intel3/compilers_and_libraries_2016.2.181/linux/compiler/lib/intel64:/share/apps/intel3/compilers_and_libraries_2016.2.181/linux/compiler/lib/intel64_lin:/share/apps/intel3/compilers_and_libraries_2016.2.181/linux/mpi/intel64/lib:/share/apps/intel3/compilers_and_libraries_2016.2.181/linux/mpi/mic/lib:/share/apps/intel3/compilers_and_libraries_2016.2.181/linux/ipp/lib/intel64:/share/apps/intel3/compilers_and_libraries_2016.2.181/linux/compiler/lib/intel64:/share/apps/intel3/compilers_and_libraries_2016.2.181/linux/mkl/lib/intel64:/share/apps/intel3/compilers_and_libraries_2016.2.181/linux/tbb/lib/intel64/gcc4.1:/share/apps/intel3/debugger_2016/libipt/intel64/lib:/share/apps/intel3/compilers_and_libraries_2016.2.181/linux/daal/lib/intel64_lin:/share/apps/intel3/compilers_and_libraries_2016.2.181/linux/daal/../tbb
> >> /li
> >> b/intel64_lin/gcc4.4:/share/apps/intel3/compilers_and_libraries_2016.2.181/linux/daal/../compiler/lib/intel64_lin:/home/hector/installed/gcc-6.1/lib64:/home/hector/installed/gcc-5.1/lib64://home/hector/installed/lib:/home/hector/installed/gcc-6.1/lib64:/home/hector/installed/gcc-5.1/lib64://home/hector/installed/lib:/opt/gridengine/lib/lx26-amd64:/opt/openmpi/lib
> >>
> >>
> >> Attached you will find the resulting petscvariables file. There in the
> >> definition of PETSC_WITH_EXTERNAL_LIB it is not included the gcc-6.1
> >> directory
> >> and instead gcc4.1 directory is included.
> >>
> >>
> >> What could be the problem? Thank you for your help.
> >>
> >> Best regards,
> >>
> >> Hector
> >>
> >>
> 
>