Re: [PATCH 3/4] Makefile: Replace old suffix rules with pattern rules

[Pedro Alves <palves at redhat dot com>]

On 11/17/2016 04:52 PM, Simon Marchi wrote:
> On 2016-11-16 14:10, Pedro Alves wrote:
>> IMO, whether to explicitly remove default suffixes from the
>> the implicit rule suffixes list for efficiency is a separate
>> subject, since we're not currently doing it either.
>>
>> Just to be sure none of the default suffix rules is necessary,
>> can you confirm:
>>
>> 1. that "make -r" (from scratch) still works.
> 
> "make -r" from scratch from the top-level fails in the readline directory:
> 
>   ar: readline.o: No such file or directory
> 
> It seems like readline relies on implicit rules.  It shouldn't be
> affected by gdb disabling them though.  I did a "make" in the readline
> directory to make it build, then resume the top-level build with "make
> -r", and it finished cleanly.
> 
>> 2. that "make -r diststuff" in the gdb build dir still works.
> 
> The commands completes successfully, so it looks good.  Still, perhaps
> Joel should be a little bit more careful when doing the next release to
> make sure nothing it missing.
> 
>> If the above work, then this is OK with me to push in.
> 
> Just to be clear, this patchset does not disable the default suffix
> rules, so I don't think it was really necessary to check that for this
> patch.  But at least we know it's safe for when we'll want to disable them.

You've changed .pot etc. rules which aren't triggered by a normal
build, so I wanted to be sure that they weren't now working after
the patch just because we'd happen to pick the default rules instead
of the new patterns.  So I think it was useful testing.  In any case,
it works, so I'm happy.  :-)

Thanks,
Pedro Alves