From: Jonathan Nieder <jrnieder@gmail.com>
Date: Fri, 01 Feb 2013 22:38:51 GMT
Subject: Re: Re: Re: Re: Segmentation fault with latest git (070c57df)
Message-ID: <20130201223851.GH12368@google.com>
In-Reply-To: <27376267.797831359716377823.JavaMail.weblogic@epml01>

Jongman Heo wrote:

>> But it doesn't stimulate any prerequisites in make, which is weird.
>> What's in builtin/.depend/fetch.o.d?
[...]
> please see below~.
>
> $ cat builtin/.depend/fetch.o.d            
> fetch.o: builtin/fetch.c cache.h git-compat-util.h compat/bswap.h \

That's the problem.  See the following thread:

  http://thread.gmane.org/gmane.comp.version-control.git/185625/focus=185680

Currently when COMPUTE_HEADER_DEPENDENCIES=auto git tests for
dependency generation support by checking the output and exit status
from the following command:

	$(CC) $(ALL_CFLAGS) -c -MF /dev/null -MMD -MP \
		-x c /dev/null -o /dev/null 2>&1

Perhaps this can be improved?  Even something as simple as a ccache
version test could presumably help a lot.

Hope that helps,
Jonathan