问题
I am working on Linux and I have installed Qt Creator 2.5.2, Qt libraries 4.7.4 and 4.4.3 all from sources. I cannot install the binaries directly for incompatibility between versions. The installation processes for both Qt 4.7.4 and Qt 4.4.3 were the same. The issue I am facing is that Qt Creator recognizes Qt 4.7.4 but not Qt 4.4.3, with the error
The Qt version is invalid : Could not determine the path to the binaries of the Qt installation, maybe the path is wrong.
Well each library is installed in /home/$username/qt/Qt-$version. When I manually compile a project with
cd directory
/home/$username/qt/Qt-4.4.3/qmake $PATHPRO
make
Everything work as a charm and I can run the app.
What did I tried?
- Recompile Qt-4.4.3
- Check the folder permissions
- Restart Qt Creator
- Smash my head on my desktop
Any thoughts? The OS is SUSE Enterprise 11-32bits.
回答1:
Problem solved :D.
QtCreator find libraries by using some qmake properties. It query for these properties by executing the command qmake -query. The issue was that none of these variables were set in the Qt 4.4.3 library while they were present in the Qt 4.7.4 library.
So the solution is to set the properties using
home/$username/qt/Qt-4.4.3/bin/qmake -set VARIABLE VALUE
where value is usually a path to a directory
Variables in 4.7.4:
QT_INSTALL_PREFIX: home/$username/qt/Qt-4.7.4/
QT_INSTALL_DATA:
QT_INSTALL_DOCS:
QT_INSTALL_HEADERS:
QT_INSTALL_LIBS:
QT_INSTALL_BINS:
QT_INSTALL_PLUGINS:
QT_INSTALL_IMPORTS:
QT_INSTALL_TRANSLATIONS:
QT_INSTALL_CONFIGURATION:
QT_INSTALL_EXAMPLES:
QT_INSTALL_DEMOS:
QMAKE_MKSPECS:
QMAKE_VERSION:2.01a
QT_VERSION:4.7.4
I think the most important are QT_INSTALL_LIBS, QT_INSTALL_LIBS and QT_VERSION.
see configuring qmake environment.
来源：https://stackoverflow.com/questions/12599233/qt-version-is-invalid