AW: problems with make...

[Tony Wetmore]

Jupp:  This is definitely a question to be answered by a Qt mailing
list.  It has nothing to do with gcc.  Even make is not a part of gcc,
so that likely has its own mailing list as well.

Corey: If you are linking an executable against a static library, as
Jupp is doing, you must re-link the executable if the library changes,
otherwise your executable will NOT see the changes made in the library.
This is definitely something you would do in a Makefile for your
executable, probably something like this:

  executable: main.o staticlibrary.a
    LINK_COMMAND_HERE

That rule would trigger a re-link of the executable if either main.o or
staticlibrary.a were changed.

---
Tony Wetmore
Raytheon Solipsys
mailto:tony.wetmore@solipsys.com
http://www.solipsys.com
 
 


-----Original Message-----
From: gcc-help-owner@gcc.gnu.org [mailto:gcc-help-owner@gcc.gnu.org] On
Behalf Of corey taylor
Sent: Tuesday, February 08, 2005 5:11 PM
To: Jupp Tscheak
Cc: gcc-help@gcc.gnu.org
Subject: Re: AW: problems with make...


Well, I don't exactly see why you would want that.

However, that's an automake, make issue.  I'm not sure if you can
specify a binary in the dependency list though.

Corey


On Tue, 8 Feb 2005 22:54:42 +0100, Jupp Tscheak <jupp_tscheak@gmx.de>
wrote:
> Hi corey,
> 
> if a static linked library has changed the whole binary should be 
> recomplied. If make notices that any of the sources are newer than the

> binary it recompiles. This behaviour should be the same if the static 
> lib is newer than the binary. That isn't the case. Can you explain 
> this?
> 
> Jupp
> 
> -----Ursprüngliche Nachricht-----
> Von: corey taylor [mailto:corey.taylor@gmail.com]
> Gesendet: Dienstag, 8. Februar 2005 22:44
> An: Jupp Tscheak
> Cc: gcc-help@gcc.gnu.org
> Betreff: Re: problems with make...
> 
> Jupp,
> 
>   For what behavior are you looking?
> 
> corey
> 
> On Tue, 8 Feb 2005 22:40:45 +0100, Jupp Tscheak <jupp_tscheak@gmx.de> 
> wrote:
> > Hi,
> >
> > we're building our project with automatic generated Makefiles (using

> > qt's .pro files, although some modules have nothing to do with qt!).

> > The problem is that if a static linked library has changed, it says 
> > "nothing to be done for..." (binary file is older than static lib so

> > it should be relinked). Does anyone know how to avoid this behavior 
> > (any flags for g++)?
> >
> > Thanks in advance
> >
> > Jupp Tscheak
> >
> >
> 
>