deploying Qt/QML App with LocalStorage (Sqlite) on OS X - qt

Question

I'm doing an app with QML that uses LocalStorage to store some informations.
It's working fine when I run in debug mode.
My storage.js that access the database is like that.
.import QtQuick.LocalStorage 2.0 as Sql
// First, let's create a short helper function to get the database connection
function getDatabase() {
return Sql.LocalStorage.openDatabaseSync("MyApp", "0.1", "StorageDatabase", 100000);
}
My Qt .pro file contains the Sql module:
QT += sql
And at first moment it runs fine in Release mode either.
But when I try to deploy on OSX, running macdeployqt like that:
macdeployqt MyApp.app -dmg -qmldir=../MyApp/qml/
First I got one error, but I think that's ok because I don't use MySQL: ERROR: no file at
"/opt/local/lib/mysql55/lib/libmysqlclient.18.dylib"
I'm using sqlite via LocalStorage.
Then trying to run in Release mode it doesn't work anymore, the database access doesn't work, not even the in the deployment it works... now when I try to run the app I got the error:
storage.js:5: ReferenceError: Sql is not defined
The line 5 is this one:
return Sql.LocalStorage.openDatabaseSync("MyApp", "0.1", "StorageDatabase", 100000);
And the Sql name is defined in the first line:
.import QtQuick.LocalStorage 2.0 as Sql
Looking for this error in the internet I found some places telling to do exactly what I did, like here: https://qt-project.org/forums/viewthread/28371
Any clue about this?
I'm using Qt5.2, Quick 2.0, Qt Creator 3.01

Answer 1

The problem was related to this Qt bug that is here since Qt5.1
https://qt-project.org/forums/viewthread/29805/
I've used the script and custom macdeployqt linked in the post to make this work.
Script: https://gist.github.com/lasconic/5965542
Custom macdeployqt: https://github.com/MaximAlien/macdeployqt
It seems that Qt is not giving much attention to desktop development, only that explains a bug like that not fixed yet.