On domenica 11 marzo 2018 19:50:44 CET, David Faure wrote:
On dimanche 11 mars 2018 12:08:27 CET Elvis Angelaccio wrote:
I have a weird crash in ark if I enable the target generation in the bin
subfolder [1].
The problem is that QCoreApplication::libraryPaths() returns the following

    ark.kerfuffle: ("/usr/lib/qt/plugins",

which means that ark loads first its system-wide plugins, while it should
load first the plugins form its build dir.

ECM has code that fixes this problem for test targets [2].
I tried to do the same to all the ark targets (main executable, kerfuffle
library, plugins), but it doesn't work.
Commit message in [2] by David says:

    "This of course requires running the unittests via ctest rather than
launching the executable directly."

Does that mean that ctest has some magic that adjusts the library paths?

The magic is the one that is set by that very commit [2] you're referencing:
it sets $QT_PLUGIN_PATH in the env used by ctest to run the test.

Ah ok, now I understand why it doesn't work for ark :/

Is it possible to do the same with normal executables?

I don't see how cmake could help, since you're launching the executable directly, not via cmake/ctest.

Solution 1: a change in Qt to add executablePath() to the plugin path, but that got rejected when I tried.

Thanks, this link at least has a workaround that I can use (export QT_PLUGIN_PATH=.:$QT_PLUGIN_PATH). But of course the whole point of this effort was to help new contributors, so this cannot be a solution for them.

Solution 2 : a wrapper script to launch ark after setting the plugin path.
This seems to be the qmake solution. See the uic_wrapper.sh files anywhere in the builddir of any qmake project...

I guess we could make ECM generate such wrapper scripts for all non-test executables...

Sounds good!


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