[Bug other/30241] New: __libc_stack_end is not portable between PPC distributions

["hanwen at xs4all dot nl" <gcc-bugzilla at gcc dot gnu dot org>]

Hello,

i'm not sure this is the right place to report this. Please direct me elsewhere
if it's not.

I'm trying to build generic binaries for lilypond (lilypond.org), using a x86
pc targetting linux/ppc. I'm building a cross-compiler against the
Debian/stable libs/headers. 

My problem is that libgcc_s.so links in the __libc_stack_end symbol
(ppc_linux_aux_vector ()  in config/rs6000/linux-unwind.h )
This symbol has differing versions across platforms (GLIB_2.1 on Fedora Core,
Yellow Dog Linux and GLIBC_PRIVATE on Debian/stable), so it's not possible to
build PPC binaries that run on all linux/ppc distributions.  

I could try patching GCC sources, to simulate a stupid PPC CPU, but it would be
nice if this worked out of the box, ie. if ppc_fallback_frame_state() could
determine CPU characteristics without looking at __libc_stack_end.


-- 
           Summary: __libc_stack_end is not portable between PPC
                    distributions
           Product: gcc
           Version: 4.1.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: other
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: hanwen at xs4all dot nl
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: powerpc-linux
GCC target triplet: powerpc-linux


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30241