[Qt-creator] Shadow Build Folder Location in QMake

[Danny Price]

On Fri, May 14, 2010 at 11:49 AM, Robert Caldecott <
robert.caldecott at gmail.com> wrote:

> Hi, long time no post.
>
> I have installed the Qt Creator 2.0 beta and have decided to try
> shadow builds (as they are enabled by default).  The problem I have is
> that some of my qmake .pro files are assuming that targets will end up
> in ./debug, ./release, etc. which no longer works.  For example, the
> following snippet will set a dependency:
>
> CONFIG(debug, debug|release):OUTDIR = debug
> else:OUTDIR = release
> PRE_TARGETDEPS += ../ProjectName/$${OUTDIR}/someLib.a
>
> This will now fail as the shadow build path is different.
>

Hi had the exact same problem and it was a royal pain because:
a) all my projects encode their deps via relative paths like this.
b) i don't keep pro.user files in source control and so i get this problem
everytime i do a clean checkout due to Creator setting up new shadow builds.


>
> So, what I want to do is simple - I want to be able to get the shadow
> build location from my .pro file.  I've tried every qmake variable I
> can think of but none of them help.  DESTDIR is always blank for
> example.  The closest I've found is OUT_PWD but I really need one that
> specifies a folder a level about this.
>

Shadow-builds appear to be a Creator specific feature so qmake won't help.


> Before I give up on what seems to be a useful feature can anyone offer
> me some advice?  I store all my dependency information in the main
> .pro files and want to avoid anything that requires a user to set (so
> changing .pro.user is out of the question.)
>
> QMAKE_SHADOW_BUILD_DIR would be great obviously.  :)
>

Store your related projects within a single SUBDIR project. That way,
Creator will create a single shadow build directory for the SUBDIR and all
it's projects. Your relative paths should then work again :)

I've done this and it seems to work fine.

Session-only projects and shadow builds do not mix.


> Thanks in advance.
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