[PATCH] Implement a workaround for GNU mak jobserver

[H.J. Lu]

On Tue, Jan 12, 2021 at 5:26 AM Nick Clifton <nickc@redhat.com> wrote:
>
> Hi H.J.
>
> >> since the '+' is missing on the recipe line in Makefiles generated by
> >> automake.  Add the '+' to the recipe line by hand.
>
> Is this an automake bug that ought to be reported ?

Yes

https://lists.gnu.org/archive/html/automake/2020-02/msg00012.html

But my automake patch was rejected because automake developers
believe that the choice of adding '+" belongs to package builders, not
package developers.

> >> bfd/
> >>
> >>          PR binutils/26792
> >>          * configure.ac: Use GNU_MAKE_JOBSERVER.
> >>          * aclocal.m4: Regenerated.
> >>          * configure: Likewise.
> >>
> >> binutils/
> >>
> >>          PR binutils/26792
> >>          * configure.ac: Use GNU_MAKE_JOBSERVER.
> >>          * aclocal.m4: Regenerated.
> >>          * configure: Likewise.
> >>
> >> config/
> >>
> >>          PR binutils/26792
> >>          * jobserver.m4: New file.
> >>
> >> gas/
> >>
> >>          PR binutils/26792
> >>          * configure.ac: Use GNU_MAKE_JOBSERVER.
> >>          * aclocal.m4: Regenerated.
> >>          * configure: Likewise.
> >>
> >> gprof/
> >>
> >>          PR binutils/26792
> >>          * configure.ac: Use GNU_MAKE_JOBSERVER.
> >>          * aclocal.m4: Regenerated.
> >>          * configure: Likewise.
> >>
> >> ld/
> >>
> >>          PR binutils/26792
> >>          * configure.ac: Use GNU_MAKE_JOBSERVER.
> >>          * aclocal.m4: Regenerated.
> >>          * configure: Likewise.
> >>
> >> libctf/
> >>
> >>          PR binutils/26792
> >>          * configure.ac: Use GNU_MAKE_JOBSERVER.
> >>          * aclocal.m4: Regenerated.
> >>          * configure: Likewise.
> >>
> >> opcodes/
> >>
> >>          PR binutils/26792
> >>          * configure.ac: Use GNU_MAKE_JOBSERVER.
> >>          * aclocal.m4: Regenerated.
> >>          * configure: Likewise.
> >
> > I have checked the PGO/LTO build patches into master branch.   Here
> > is the updated patch to enable LTO jobserver with GCC 11.
> >
> > OK for master?
>
> Approved - please apply.
>

I will check it in shortly.

Thanks.

-- 
H.J.