__sync_fetch_and_add_4 in libstdc++

[Ian Lance Taylor]

"Maciej (Matchek) Bliziński" <maciej@opencsw.org> writes:

> Other
> workarounds found on the web suggest changing the target architecture
> to i686.  Not satisfied with these workarounds, I've done some digging
> with help from friends (kudos to Joerg Schilling!).

...

> The fix would probably involve compiling libstdc++ in such a way, that
> __sync_fetch_and_add_4 would be generated.  Do you have an idea how to
> achieve this?

I recommend changing the target architecture to i686.  The easy way to
do this is to add --with-arch-32=i686 when you run configure.  You don't
have to use i686--you can use the minimum processor type that you expect
to encounter.

Ian