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Re: Hard time figuring out what order-only prerequisites really do.
From: |
Angel Tsankov |
Subject: |
Re: Hard time figuring out what order-only prerequisites really do. |
Date: |
Fri, 1 Jul 2005 15:29:46 +0300 |
I didn't get this. Could you give a more detaild explanation?
> In my view, all they do is change the meaning of "up to date" from the
> usual "exists and timestamp is newer" to just "exists".
>
> Noel
>
> Angel Tsankov wrote:
>
>> I'm having a really hard time what order-only prerequsites really do.
>>
>> First, I thought that they will do just fine if I want to have my object
>> files go in a separate folder. This makes it necessary to ensure this
>> folder (let's name it IntemediateFolder) exists before compilation of
>> each source file. Of course, this check should not render the target
>> (object file) out-of-date. As far as I get it all this make the
>> folder-existence check (and creation if necessary) appropriate for an
>> order-only prerequiste. However, I must be awfully wrong, 'cause I could
>> not come up with a makefile that does exactly this. And I've been trying
>> it since for a whole day...
>>
>> So, I've attached the troublesome makefile. I execute it with make 3.80
>> on a linux system. Could you explain to me why the script compiles the
>> soruce files even when the objects do exist and are newer than the
>> corresponding source files?
>>
>> Best wishes,
>> An unsuccessful rocket sceintist
>> _______________________________________________
>> Help-make mailing list
>> address@hidden
>> http://lists.gnu.org/mailman/listinfo/help-make
>
- Hard time figuring out what order-only prerequisites really do., Angel Tsankov, 2005/07/01
- Re: Hard time figuring out what order-only prerequisites really do., Noel Yap, 2005/07/01
- Re: Hard time figuring out what order-only prerequisites really do.,
Angel Tsankov <=
- Re: Hard time figuring out what order-only prerequisites really do., Noel Yap, 2005/07/01
- Re: Hard time figuring out what order-only prerequisites really do., Angel Tsankov, 2005/07/01
- Re: Hard time figuring out what order-only prerequisites really do., Noel Yap, 2005/07/01
- Re: Hard time figuring out what order-only prerequisites really do., Angel Tsankov, 2005/07/01
- Re: Hard time figuring out what order-only prerequisites really do., Noel Yap, 2005/07/01
- Re: Hard time figuring out what order-only prerequisites really do., Paul D. Smith, 2005/07/01