now impossible to debug code that uses PETSc shared libraries?

[Matthew Knepley]

On Sat, May 3, 2008 at 2:50 PM, Barry Smith <bsmith at mcs.anl.gov> wrote:
>
>   They may have changed things on Leopard.

I have had a problem like this before on Linux. It was a mismatch between the
compiler and debugger. Google might have either a fix for this bug, or at least
the compatible versions of gcc and gdb for Leopard.

  Matt

>   Barry
>
>
>
>  On May 3, 2008, at 2:00 AM, Satish Balay wrote:
>
>
> > On Sat, 3 May 2008, Satish Balay wrote:
> >
> >
> > > On Fri, 2 May 2008, Barry Smith wrote:
> > >
> > >
> > > > apple
> > > >
> > >
> > > Appears to work fine on 10.4 ppc machine - I have access to.
> > >
> >
> > Also works on 10.4 Intel machine
> >
> > Satish
> >
> > --------------------------------------------
> >
> > videh:~/petsc-dev/src/ksp/ksp/examples/tutorials balay$ ls
> $PETSC_DIR/$PETSC_ARCH/lib
> > foo                     libpetsc.dylib          libpetscdm.dylib
> libpetscmat.dylib       libpetscts.dylib
> > libmpiuni.a             libpetsccontrib.dylib   libpetscksp.dylib
> libpetscsnes.dylib      libpetscvec.dylib
> > videh:~/petsc-dev/src/ksp/ksp/examples/tutorials balay$ make ex2
> > gcc -o ex2.o -c -fPIC -Wall -Wwrite-strings -Wno-long-double
> -Wno-strict-aliasing -g3 -I/Users/balay/petsc-dev/src/dm/mesh/sieve
> -I/Users/balay/petsc-dev
> -I/Users/balay/petsc-dev/darwin8.11.1-c-debug/include
> -I/Users/balay/petsc-dev/include
> -I/Developer/SDKs/MacOSX10.4u.sdk/usr/X11R6/include
> -I/Users/balay/petsc-dev/include/mpiuni
> -D__SDIR__="src/ksp/ksp/examples/tutorials/" ex2.c
> > gcc -Wl,-multiply_defined,suppress -Wl,-multiply_defined -Wl,suppress
> -fPIC -Wall -Wwrite-strings -Wno-long-double -Wno-strict-aliasing -g3  -o
> ex2 ex2.o  -L/Users/balay/petsc-dev/darwin8.11.1-c-debug/lib
> -L/Users/balay/petsc-dev/darwin8.11.1-c-debug/lib -lpetscksp -lpetscdm
> -lpetscmat -lpetscvec -lpetsc    -L/usr/X11R6/lib -lX11
> -L/Users/balay/petsc-dev/darwin8.11.1-c-debug/lib
> -L/Users/balay/petsc-dev/darwin8.11.1-c-debug/lib -lmpiuni -llapack -lblas
> > /bin/rm -f ex2.o
> > videh:~/petsc-dev/src/ksp/ksp/examples/tutorials balay$ gdb ex2
> > GNU gdb 6.3.50-20050815 (Apple version gdb-573) (Fri Oct 20 15:50:43 GMT
> 2006)
> > Copyright 2004 Free Software Foundation, Inc.
> > GDB is free software, covered by the GNU General Public License, and you
> are
> > welcome to change it and/or distribute copies of it under certain
> conditions.
> > Type "show copying" to see the conditions.
> > There is absolutely no warranty for GDB.  Type "show warranty" for
> details.
> > This GDB was configured as "i386-apple-darwin"...Reading symbols for
> shared libraries .......... done
> >
> > (gdb) b MatMult
> > Breakpoint 1 at 0x184cfe: file matrix.c, line 1687.
> > (gdb) r
> > Starting program:
> /Users/balay/petsc-dev/src/ksp/ksp/examples/tutorials/ex2
> > Reading symbols for shared libraries ..+.+++++ done
> > Breakpoint 1 at 0x118cd0c: file matrix.c, line 1690.
> >
> > Breakpoint 1, MatMult (mat=0x1808f30, x=0x180b930, y=0x180fb30) at
> matrix.c:1690
> > 1690      PetscFunctionBegin;
> > (gdb) where
> > #0  MatMult (mat=0x1808f30, x=0x180b930, y=0x180fb30) at matrix.c:1690
> > #1  0x00002746 in main (argc=1, args=0xbffffae0) at ex2.c:141
> > (gdb) list
> > 1685    @*/
> > 1686    PetscErrorCode PETSCMAT_DLLEXPORT MatMult(Mat mat,Vec x,Vec y)
> > 1687    {
> > 1688      PetscErrorCode ierr;
> > 1689
> > 1690      PetscFunctionBegin;
> > 1691      PetscValidHeaderSpecific(mat,MAT_COOKIE,1);
> > 1692      PetscValidType(mat,1);
> > 1693      PetscValidHeaderSpecific(x,VEC_COOKIE,2);
> > 1694      PetscValidHeaderSpecific(y,VEC_COOKIE,3);
> > (gdb)
> >
> >
>
>



-- 
What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which
their experiments lead.
-- Norbert Wiener