[Bug target/47609] New: libstdc++ depends on libgcc_s.10.5 but gets linked to libgcc_s.10.4

[ossman at cendio dot se]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47609

           Summary: libstdc++ depends on libgcc_s.10.5 but gets linked to
                    libgcc_s.10.4
           Product: gcc
           Version: 4.4.3
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: ossman@cendio.se


Not sure what's going on here, but I get this problem linking C++ programs:

/usr/lib/gcc/i686-apple-darwin9/4.4.3/../../../../i686-apple-darwin9/bin/ld:
Undefined symbols:
__Unwind_GetIPInfo
collect2: ld returned 1 exit status

Telling g++ to be verbose, I can see that it specifies -macosx_version_min 10.4
by default. Examining the different libgcc_s libraries though, I can see that
the 10.4 version doesn't include Unwind_GetIPInfo, only the 10.5 version does.

I'm not sure why the inconcistency here. The darwin9 target means 10.5, so that
might be why libstdc++ assumes it has access to Unwind_GetIPInfo. But then the
question is why 10.4 is still the default with the corresponding gcc/g++.