From: Jonathan Nieder <jrnieder@gmail.com>
Date: Sun, 14 Aug 2011 20:02:55 GMT
Subject: Re: [PATCH resend] Makefile: Use computed header dependencies if the compiler supports it
Message-ID: <20110814200255.GC16819@elie.gateway.2wire.net>
In-Reply-To: <CALx8hKRBjXr44gM1JA+d=RU80pmruPV56s-G3JvViz87eJ=ajQ@mail.gmail.com>

Fredrik Kuivinen wrote:
> On Sun, Aug 14, 2011 at 21:00, Jonathan Nieder <jrnieder@gmail.com> wrote:

>> I wonder if we can make do with a faster check, like
>>
>>        $(CC) -c -MF /dev/null -MMD -MP git.c --help >/dev/null 2>&1
>>
>> What do you think?
[...]
> Without patch (with COMPUTE_HEADER_DEPENDENCIES=Yes):

The case to compare against is when COMPUTE_HEADER_DEPENDENCIES is not
set, I'd think, since that is the status quo.  And I was talking about
commands like "make clean" that do not care about that feature, not
"make all".

[...]
> With patch, but changed to use git.c instead of ++empty.c:

Did you try with "--help"?