[Qt-interest] qmake / MinGW and stale libraries

[Schimkowitsch Robert]

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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