Cannot import QML plugin - qt

Question

Let's consider an example QML plugin PluginExample (see C++ Plugins for QML) created in the directory $HOME/projects/org/example/PluginExample ($HOME/projects is in QML2_IMPORT_PATH).
pluginexample.pro:
TEMPLATE = lib
TARGET = PluginExample
QT += qml quick
CONFIG += qt plugin
TARGET = $$qtLibraryTarget($$TARGET)
uri = org.example.PluginExample
# Input
SOURCES += \
pluginexample_plugin.cc \
myitem.cc
HEADERS += \
pluginexample_plugin.hh \
myitem.hh
OTHER_FILES = qmldir
!equals(_PRO_FILE_PWD_, $$OUT_PWD) {
copy_qmldir.target = $$OUT_PWD/qmldir
copy_qmldir.depends = $$_PRO_FILE_PWD_/qmldir
copy_qmldir.commands = $(COPY_FILE) \"$$replace(copy_qmldir.depends, /, $$QMAKE_DIR_SEP)\" \"$$replace(copy_qmldir.target, /, $$QMAKE_DIR_SEP)\"
QMAKE_EXTRA_TARGETS += copy_qmldir
PRE_TARGETDEPS += $$copy_qmldir.target
}
qmldir.files = qmldir
unix {
installPath = $$[QT_INSTALL_QML]/$$replace(uri, \\., /)
qmldir.path = $$installPath
target.path = $$installPath
INSTALLS += target qmldir
}
myitem.hh:
#ifndef MYITEM_H
#define MYITEM_H
#include <QQuickItem>
class MyItem : public QQuickItem
{
Q_OBJECT
Q_DISABLE_COPY(MyItem)
Q_PROPERTY(QString text READ text CONSTANT)
public:
MyItem(QQuickItem *parent = 0);
QString text() const;
~MyItem();
};
#endif // MYITEM_H
myitem.cc:
#include "myitem.hh"
MyItem::MyItem(QQuickItem *parent):
QQuickItem(parent)
{
}
MyItem::~MyItem()
{
}
QString MyItem::text() const
{
return "MyItem";
}
pluginexample_plugin.hh:
#ifndef PLUGINEXAMPLE_PLUGIN_H
#define PLUGINEXAMPLE_PLUGIN_H
#include <QQmlExtensionPlugin>
class PluginExamplePlugin : public QQmlExtensionPlugin
{
Q_OBJECT
Q_PLUGIN_METADATA(IID "org.qt-project.Qt.QQmlExtensionInterface")
public:
void registerTypes(const char *uri);
};
#endif // PLUGINEXAMPLE_PLUGIN_H
pluginexample_plugin.cc:
#include "pluginexample_plugin.hh"
#include "myitem.hh"
#include <qqml.h>
void PluginExamplePlugin::registerTypes(const char *uri)
{
// #uri org.example.PluginExample
qmlRegisterType<MyItem>(uri, 1, 0, "MyItem");
}
qmldir:
module org.example.PluginExample
plugin PluginExample
The most part of the plugin's code was auto-generated by the project wizard.
It builds fine, but when I try to import org.example.PluginExample 1.0 from another project, I get this error:
module "org.example.PluginExample" plugin "PluginExample" not found
How can I fix that? Do I need to specify additional information to build/locate the plugin?
PS. Qt 5.3, Linux x86_64
EDIT 1:
I copied libPluginExample.so from the build directory (build-PluginExample-Desktop_Qt_5_3_0_GCC_64bit-Debug) to the source directory (PluginExample), and the error disappeared. Is this the best solution?
EDIT 2:
To avoid manual copying of the plugin library after each build, the following changes need to be applied to the *.pro file (unix-specific):
!equals(_PRO_FILE_PWD_, $$OUT_PWD) {
# ...
unix {
QMAKE_POST_LINK += $(COPY_FILE) $$quote($${OUT_PWD}/lib$${TARGET}.so) $$_PRO_FILE_PWD_
}
}