[Bug target/89096] [7/8/9 regression] AIX 7 linker rejects _<filename>.ro_ sections by default

[dje at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89096

--- Comment #7 from David Edelsohn <dje at gcc dot gnu.org> ---
Is protobufs even known to build on AIX?

Whoever wrote the link command for AIX didn't know what they were doing and
threw every option they could at the problem until it appeared to work.  This
is wrong.

-bexpall -bsvr4 -brtl likely is very wrong.

Until it's proven that this isn't cockpit error, this won't be analyzed or
fixed.