https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67102
--- Comment #6 from CVS Commits ---
The master branch has been updated by Thomas Schwinge :
https://gcc.gnu.org/g:aeac414923aa1e87986c7fc6f9b921d89a9b86cf
commit r12-6861-gaeac414923aa1e87986c7fc6f9b921d89a9b86cf
Author: Thomas Schwinge
Date: Tue Jan 25 18:44:02 2022 +0100
Revert "Fix PR 67102: Add libstdc++ dependancy to libffi" [PR67102]
This reverts commit db1a65d9364fe72c2fff65fb2dec051728b6f3fa.
On 2021-09-17T01:01:39-0700, Andrew Pinski via Gcc-patches
wrote:
> On Fri, Sep 17, 2021 at 12:46 AM Thomas Schwinge
wrote:
>> On 2021-09-15T13:56:37-0700, apinski--- via Gcc-patches
wrote:
>> > The error message is obvious -funconfigured-libstdc++-v3 is used
>> > on the g++ command line. So we just add the dependancy.
>>
>> > --- a/Makefile.def
>> > +++ b/Makefile.def
>> > @@ -592,6 +592,7 @@ dependencies = { module=configure-target-fastjar;
on=configure-target-zlib; };
>> > dependencies = { module=all-target-fastjar; on=all-target-zlib; };
>> > dependencies = { module=configure-target-libgo;
on=configure-target-libffi; };
>> > dependencies = { module=configure-target-libgo;
on=all-target-libstdc++-v3; };
>> > +dependencies = { module=configure-target-libffi;
on=all-target-libstdc++-v3; };
>> > dependencies = { module=all-target-libgo; on=all-target-libbacktrace;
};
>> > dependencies = { module=all-target-libgo; on=all-target-libffi; };
>> > dependencies = { module=all-target-libgo; on=all-target-libatomic; };
>>
>> I'm confused, because given that this 'Makefile.def' change only has the
>> following effect:
>>
>> > --- a/Makefile.in
>> > +++ b/Makefile.in
>> > @@ -61261,6 +61261,7 @@ all-bison: maybe-all-intl
>> > all-flex: maybe-all-intl
>> > all-m4: maybe-all-intl
>> > configure-target-libgo: maybe-all-target-libstdc++-v3
>> > +configure-target-libffi: maybe-all-target-libstdc++-v3
>> > configure-target-liboffloadmic: maybe-configure-target-libgomp
>> > all-target-liboffloadmic: maybe-all-target-libgomp
>> > configure-target-newlib: maybe-all-binutils
>>
>> ... isn't that actually a no-op, because we already had such a
dependency
>> listed? Now twice:
>>
>> $ grep -n -F 'configure-target-libffi:
maybe-all-target-libstdc++-v3' -- Makefile.in
>> 61264:configure-target-libffi: maybe-all-target-libstdc++-v3
>> 61372:configure-target-libffi: maybe-all-target-libstdc++-v3
>>
>> Compared to the existing one, the one you've added is additionally
>> restricted by '@unless gcc-bootstrap'.
>>
>> I noticed this as I remembered that on our og[...] development branches
>> we have a patch in the opposite direction: get rid of this dependency
via
>> removing 'lang_env_dependencies = { module=libffi; cxx=true; };' from
>> 'Makefile.def'. See
>>
>> "Disable libstdc++ dependency for libffi". (Maciej CCed in case you
have
>> any further thoughts on that.)
>
> Oh, I see what happened now, the old bug was actually fixed by r6-5415
> which added cxx=true.
> So yes my patch is actually not needed and can be reverted.
> I tried to look to see if there was a dependency was there but for
> some reason I did not see it.
