[Bug target/40134] New: symbols not resolved when building shared libraries (link with -lgcc_s -lgcc?)

[debian-gcc at lists dot debian dot org]

this showed up when trying to address PR40133. Enabling the exception
propagation support keeps the __sync_val_compare_and_swap_4 unresolved.

/usr/bin/ld: ./atomic-1.exe: hidden symbol `__sync_val_compare_and_swap_4' in
/home/doko/gcc/4.4/gcc-4.4-4.4.0/build/gcc/libgcc.a(linux-atomic.o) is
referenced by DSO
/usr/bin/ld: final link failed: Nonrepresentable section on output

Linking the shared libstdc++ with both -lgcc_s and -lgcc does fix these.

There seem to be two issues:

 - libtool currently doesn't allow to link with -lgcc_s -lgcc (in this order). 
   see http://gcc.gnu.org/ml/libstdc++/2009-05/msg00064.html

 - g++ should link be default with -lgcc_s -lgcc? this is how I understand
   http://gcc.gnu.org/ml/gcc/2009-05/msg00039.html


-- 
           Summary: symbols not resolved when building shared libraries
                    (link with -lgcc_s -lgcc?)
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: debian-gcc at lists dot debian dot org
GCC target triplet: arm-linux-gnueabi


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40134