[Bug target/85142] Wrong -print-multi-os-directory & -print-multi-lib output for riscv64 + multilib

["wilson at tuliptree dot org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85142

--- Comment #9 from Jim Wilson <wilson at tuliptree dot org> ---
On Mon, 2018-04-02 at 23:50 +0000, joseph at codesourcery dot com
wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85142
> 
> --- Comment #8 from joseph at codesourcery dot com <joseph at
> codesourcery dot com> ---
> "." is correct for the default multilib in the non-OS directory 
> arrangements, just not in the OS directory arrangements.

This is obvious.  I don't understand why you are repeating the obvious.

But "." is what we get from --print-multi-os-dirnames which looks wrong
which is why I'm looking into this further.

Looking at this a bit more, I noticed that if I use --print-search-
dirs, then the paths appear to be correct.  It searches
$sysroot/lib64/lp64d first, and then $sysroot/usr/lib64/lp64d.  It is
only the --print-multi-* options that are printing output that looks
wrong for the default case.

I also noticed that I forgot a comma in my earlier MULTILIB_DEFAULTS
suggestion.

Anyways, I'm looking at the problem.  You don't need to do anything.  I
don't need any help.  Just wait until I have more info about what is
going on here.

Jim