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Re: makefile question: always recompile a file
From: |
Rainer Weikusat |
Subject: |
Re: makefile question: always recompile a file |
Date: |
Mon, 31 Aug 2009 12:23:36 +0200 |
User-agent: |
Gnus/5.11 (Gnus v5.11) Emacs/22.2 (gnu/linux) |
Jim <james.ro123@yahoo.com> writes:
> On Aug 26, 5:02 pm, Jim <james.ro...@yahoo.com> wrote:
>> Hi,
>>
>> I'm using a make program similar to gnu make. I'd like to always
>> recompile a file whenever ANY file is compiled (or assembled).
>> Preferably (but not absolutely necessary), I'd like the file to
>> recompile if the linker runs as well, but this sounds really tough.
>> In case you're wondering, this file contains a global array that has
>> time and date stamp information in it so we can tell when the project
>> was last built.
>>
>> Some engineers don't like a simple "delete the object file always when
>> make runs" approach because if you inadvertently run make a second
>> time, you get a recompile even if no sources changed.
>>
>> Any ideas on how to do this?
>>
>> Thanks much,
>>
>> Jim
>
> I'd like to thank everyone for you input! Now, for the sake of
> discussion, I'd like to change the requirements a bit. I really don't
> need this, but it may come in handy:
>
> I'd like to have a variable, say COMPILE_ALWAYS, set to a file that
> needs to be compiled/assembled always. This file may be a .c, .cpp or
> an assembler file. So, the methods I've seen here that involve
> writing the ruleset for that file just won't do because now you don't
> know what file you'll be building. How would you go about doing it?
Use a .PHONY target as prerequisite of the 'build' target, put the
variable (expansion) inside the compilation rule instead of the
filename, use a wrapper script and pass the variable expansion as
argument, ...
> My current thought is to place a line where the linking is done
> (before the link itself) that recursively calls make--it's target
> would be $(COMPILE_ALWAYS).o. Comments?
You really don't want a comment on this idea :->>.
- makefile question: always recompile a file, Jim, 2009/08/26
- Re: makefile question: always recompile a file, Chris McDonald, 2009/08/26
- Re: makefile question: always recompile a file, Eric Sosman, 2009/08/26
- Re: makefile question: always recompile a file, Gordon Burditt, 2009/08/26
- Re: makefile question: always recompile a file, André Gillibert, 2009/08/26
- Re: makefile question: always recompile a file, Ahem A Rivet's Shot, 2009/08/26
- Re: makefile question: always recompile a file, Scott Lurndal, 2009/08/28
- Re: makefile question: always recompile a file, Rainer Weikusat, 2009/08/28
- Re: makefile question: always recompile a file, Jim, 2009/08/28
- Re: makefile question: always recompile a file,
Rainer Weikusat <=