[petsc-dev] [petsc-maint #89007] gfortran-4.2 + OS X + petsc-3.2+ no longer works

[Barry Smith]

   Fine with me.

On Oct 2, 2011, at 2:44 AM, Aron Ahmadia wrote:

> I talked this over with Jed and Sean, and my opinion is that gfortran-4.2 is
> not worth supporting.  The gfortran-4.6 binary available from
> http://quatramaran.ens.fr/~coudert/gfortran/gfortran-4.6.1-x86_64-SnowLeopard.dmgworks
> well (I do not have an older system to test on).
> 
> Unfortunately, there are going to be quite a few people using gfortran-4.2
> OS X for awhile and the configure passes, the make failing only at the final
> link with (see paste below).
> 
> Would it be too much to put a check in BuildSystem to detect if gfortran-4.2
> is being used and to throw an error telling the user to upgrade their
> gfortran?
> 
> -Aron
> 
> (massive link line to try and create Fortran shared library
> lib/libpetsc.dylib
> 
> ld: warning: duplicate dylib
> /Users/aron/sandbox/petsc/arch-darwin-c-debug/lib/libmpichf90.dylibld:
> warning: duplicate dylib
> /Users/aron/sandbox/petsc/arch-darwin-c-debug/lib/libpmpich.dylibld:
> warning: duplicate dylib
> /Users/aron/sandbox/petsc/arch-darwin-c-debug/lib/libmpich.dylibld: warning:
> duplicate dylib /usr/local/lib/libgcc_s.1.dylibld: warning: for symbol
> _petscfortran9_ tentative definition of size 16 from
> CMakeFiles/petsc.dir/src/sys/f90-src/fsrc/f90_fwrap.F.o is being replaced by
> a real definition of size 4 from
> CMakeFiles/petsc.dir/src/sys/fsrc/somefort.F.old: warning: for symbol
> _petscfortran9_ tentative definition of size 16 from
> CMakeFiles/petsc.dir/src/vec/f90-mod/petscvecmod.F.o is is smaller than the
> real definition of size 4 from
> CMakeFiles/petsc.dir/src/sys/fsrc/somefort.F.old: warning: for symbol
> _petscfortran9_ tentative definition of size 16 from
> CMakeFiles/petsc.dir/src/mat/f90-mod/petscmatmod.F.o is is smaller than the
> real definition of size 4 from
> CMakeFiles/petsc.dir/src/sys/fsrc/somefort.F.old: warning: for symbol
> _petscfortran9_ tentative definition of size 16 from
> CMakeFiles/petsc.dir/src/dm/f90-mod/petscdmmod.F.o is is smaller than the
> real definition of size 4 from
> CMakeFiles/petsc.dir/src/sys/fsrc/somefort.F.old: warning: for symbol
> _petscfortran9_ tentative definition of size 16 from
> CMakeFiles/petsc.dir/src/ksp/f90-mod/petsckspmod.F.o is is smaller than the
> real definition of size 4 from
> CMakeFiles/petsc.dir/src/sys/fsrc/somefort.F.o
> 
> ld: warning: for symbol _petscfortran9_ tentative definition of size 16 from
> CMakeFiles/petsc.dir/src/snes/f90-mod/petscsnesmod.F.o is is smaller than
> the real definition of size 4 from
> CMakeFiles/petsc.dir/src/sys/fsrc/somefort.F.o
> 
> ld: warning: for symbol _petscfortran9_ tentative definition of size 16 from
> CMakeFiles/petsc.dir/src/ts/f90-mod/petsctsmod.F.o is is smaller than the
> real definition of size 4 from
> CMakeFiles/petsc.dir/src/sys/fsrc/somefort.F.o
> 
> Undefined symbols:
> 
>  "_getarg_", referenced from:
> 
>      _PETScParseFortranArgs_Private in zstart.c.o
> 
>      _petscinitialize_ in zstart.c.o
> 
>  "_iargc_", referenced from:
> 
>      _PETScParseFortranArgs_Private in zstart.c.o
> 
> ld: symbol(s) not found
> 
> /usr/bin/libtool: internal link edit command failed
>