Compiling problems using -DPETSC_USE_FORTRAN_KERNELS

[Matthew Knepley]

On 9/19/06, Patrick Lechner <mappol at gmail.com> wrote:
>
> Dear all,
>
> I have some problems compiling PETSc correctly when using the flag
> "-DPETSC_USE_FORTRAN_KERNELS" (to increase the performance of my code).
>
> My compiling options are:
> ./config/configure.py --prefix=/usr/local/compiler/pg-6.1--with-scalar-type=complex --with-cc=/usr/pgi/linux86-64/6.1/bin/pgcc
> --with-cxx=/usr/pgi/linux86-64/6.1/bin/pgCC
> --with-fc=/usr/pgi/linux86-64/6.1/bin/pgf90 --with-mpi=0
> --with-blas-lapack-lib=-lacml  --LDFLAGS=-pgf90libs
> --CPPFLAGS=-DPETSC_USE_FORTRAN_KERNELS
>

You really want to use --with-fortran-kernels=generic. You can find this
using --help.

  Thanks,

    Matt

When trying to run the PETSc test examples, I get error messages like:
> /projects/301/petsc-2.3.1-p15b
> /lib/linux-gnu-fortran-complex-nodebug/libpetscvec.a(dvec2.o)(.text+0x7581):
> In function `VecPointwiseMult_Seq':
> /projects/301/petsc-2.3.1-p15b/src/vec/vec/impls/seq/dvec2.c:848:
> undefined reference to `fortranxtimesy_'
> make[2]: [ex19] Error 2 (ignored)
> /bin/rm -f ex19.o
> --------------Error detected during compile or
> link!-----------------------
>
> There are basically undefined references to all "fortran*" functions.
> My questions now are:
> Am I using the "-DPETSC_USE_FORTRAN_KERNELS"-flag in the correct way?
> How can I get rid of these errors?
>
> I'm very much looking forward to your ideas.
> Best wishes!
> Patrick
>
>


-- 
"Failure has a thousand explanations. Success doesn't need one" -- Sir Alec
Guiness
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