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Date: Sun, 22 Nov 2009 21:40:15 -0500
From: Ken Brown <kbrown AT cornell DOT edu>
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Subject: Re: Problem with autoconf autodepend
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On 11/22/2009 6:34 PM, Dave Korn wrote:
> Ken Brown wrote:
> 
>> And here's the build failure:
>>
>> gcc -c -Demacs -DHAVE_CONFIG_H  -I. -I/tmp/emacs/src
>> -I/usr/include/gtk-2.0 -I/usr/lib/gtk-2.0/include -I/usr/include/atk-1.0
>> -I/usr/include/cairo -I/usr/include/pango-1.0 -I/usr/include/glib-2.0
>> -I/usr/lib/glib-2.0/include -I/usr/include/pixman-1
>> -I/usr/include/freetype2 -I/usr/include/libpng12
>> -I/usr/include/freetype2     -g -O2 -Wdeclaration-after-statement
>> -Wno-pointer-sign   -MMD -MF deps/ecrt0.d /tmp/emacs/src/ecrt0.c
>> /tmp/emacs/src/ecrt0.c:106: fatal error: opening dependency file
>> deps/ecrt0.d: No such file or directory
> 
>   A similar command-line with a random .c file I had lying around worked fine
> - unless I didn't create the deps directory first.  Is that what happened here?

I guess so.  I wonder if there's a timing problem so that the deps 
directory isn't being created before it needs to be used.  But here's 
something very strange:  Angelo Graziosi, who is also playing with this, 
told me that he *doesn't* get error if he does 'make -j4', but he gets 
the same error I get with just plain 'make'.  I would expect the 
opposite if it were a timing problem.

I'm also confused about what the configure test is supposed to be doing 
(see my original post).  I can't see that it creates the deps directory, 
so I don't understand why it succeeds.

Ken

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