[Qt-interest] qmake / MinGW and stale libraries

[andy fillebrown]

Are you using the DEPENDPATH qmake variable?  If the library's header
directories are not in the app's DEPENDPATH variable then the app's
Makefile will not add the library's headers as dependencies.

Cheers,
~ andy.f



On Wed, Oct 5, 2011 at 4:29 AM, Schimkowitsch Robert
<Robert.Schimkowitsch at andritz.com> wrote:
> Hi,
>
> with qmake, I often have the problem of "stale libraries", libs that
> seemingly haven't been recompiled correctly despite changes to the code.
>
> I have the most serious problems in folders where I have two project
> essentially compiling the same code, one an app (for testing) , one a lib
> (for other projects to use).
>
> They use the same source files, plus the test app has a main.cpp, and
> sometimes a few extra classes.
>
> One thing I often see are leftover Makefiles that I have to delete manually
> before the resulting lib is any good.
>
> In many cases where I simply can't know anymore which of my libraries is
> stale, I do a complete clean (plus a manual delete of the Makefiles, plus a
> manual delete of the output binaries), then take a break as the whole bunch
> of libraries is re-compiled.
>
> I am already using
> CONFIG += create_prl
> and
> CONFIG += link_prl
>
> in all my libraries and applications, respectively.
>
> Are there any ways to further improve qmake's capabilities to detect when it
> should re-run?
>
> Or are we talking mingw limitation here as well?
>
> Kind regards
>
> Robert Schimkowitsch
>
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