[PATCH 4/6] Add `+' for Jobserver Integration

[Jan Hubicka]

> On Thu, 20 Aug 2020, Giuliano Belinassi via Gcc-patches wrote:
> 
> >  libbacktrace/Makefile.in |   2 +-
> >  zlib/Makefile.in         |  64 ++++++------
> 
> These directories use makefiles generated by automake.  Rather than 
> modifying the generated files, you need to modify the sources (whether 
> that's Makefile.am, or code in automake itself - if in automake itself, we 
> should wait for an actual new automake release before updating the version 
> used in GCC).

We really want to fix make to allow tools connect to the jobserver
without the "+" on the line.  It affects other things, like dry run and
is generally a sad hack.

Honza
> 
> -- 
> Joseph S. Myers
> joseph@codesourcery.com