How to find out how libraries are linked via otool

[Hedge]

I have problems my application on OSX.
I followed "this guide":http://doc.qt.nokia.com/qq/qq09-mac-deployment.html, but my application still tries to load qt and other libraries from ~/Frameworks/ folder.

otool -L gives me this:

@ kqoauth.framework/Versions/0/kqoauth (compatibility version 0.95.0, current version 0.95.0)
QtDeclarative.framework/Versions/4/QtDeclarative (compatibility version 4.7.0, current version 4.7.3)
QtScript.framework/Versions/4/QtScript (compatibility version 4.7.0, current version 4.7.3)
QtCore.framework/Versions/4/QtCore (compatibility version 4.7.0, current version 4.7.3)
QtSvg.framework/Versions/4/QtSvg (compatibility version 4.7.0, current version 4.7.3)
QtGui.framework/Versions/4/QtGui (compatibility version 4.7.0, current version 4.7.3)
QtSql.framework/Versions/4/QtSql (compatibility version 4.7.0, current version 4.7.3)
QtXmlPatterns.framework/Versions/4/QtXmlPatterns (compatibility version 4.7.0, current version 4.7.3)
QtNetwork.framework/Versions/4/QtNetwork (compatibility version 4.7.0, current version 4.7.3)
/usr/lib/libstdc++.6.dylib (compatibility version 7.0.0, current version 7.9.0)
/usr/lib/libgcc_s.1.dylib (compatibility version 1.0.0, current version 832.0.0)
/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 125.2.10)@

but it still doesn't use at least the kqoauth provided inside the framework-folder in the .app-folder.

What can I do about this?

[goetz]

You should add the plugins directory of the bundle to the search path. This is what I do in my apps:

@
QStringList libPaths;

#if defined( Q_OS_WIN32 )
libPaths << app.applicationDirPath() + "/plugins";
#elif defined( Q_OS_MACX )
libPaths << app.applicationDirPath() + "/../PlugIns";
#endif

QApplication::setLibraryPaths( libPaths );
qDebug() << "Plugin-DIRS:" << QApplication::libraryPaths();
@

The paths in the libs and the app should be relative to the executable path

It should look like this:

@
@executable_path/../Frameworks/QtWebKit.framework/Versions/4/QtWebKit (compatibility version 4.7.0, current version 4.7.3)
@executable_path/../Frameworks/QtSvg.framework/Versions/4/QtSvg (compatibility version 4.7.0, current version 4.7.3)
@executable_path/../Frameworks/QtGui.framework/Versions/4/QtGui (compatibility version 4.7.0, current version 4.7.3)
@executable_path/../Frameworks/QtCore.framework/Versions/4/QtCore (compatibility version 4.7.0, current version 4.7.3)
@executable_path/../Frameworks/Qt3Support.framework/Versions/4/Qt3Support (compatibility version 4.7.0, current version 4.7.3)
@executable_path/../Frameworks/QtSql.framework/Versions/4/QtSql (compatibility version 4.7.0, current version 4.7.3)
@executable_path/../Frameworks/QtXml.framework/Versions/4/QtXml (compatibility version 4.7.0, current version 4.7.3)
@executable_path/../Frameworks/QtNetwork.framework/Versions/4/QtNetwork (compatibility version 4.7.0, current version 4.7.3)
@

The path for the libs used by the plugin must be the same.

[Hedge]

Ok, it takes some time but I think I got it now.

How do I find out which plugins I need?

[goetz]

That depends on the features you use :-)

This wiki page documents the "Library and Plugin Cross Dependencies":http://developer.qt.nokia.com/wiki/Qt_Library_Cross_Dependencies. Look for the plugins you know for sure you use (eg. SQL) and add the necessary dependencies.

It's always a good idea to add the imageformats and iconengines plugins. They're not really big, so they should not harm size wise.

[Hedge]

Thank you. That's a very good Wiki-page.

I could successfully fix all dependencies.

The only problem is a link pointing to a wrong location which leads to this error upon startup:

@Qt internal error: qt_menu.nib could not be loaded. The .nib file should be placed in QtGui.framework/Versions/Current/Resources/ or in the resources directory of your application bundle.
@

Of course I can put qt_menu.nib in the resources-folder as mentioned but I'd rather fix the link (Current is pointing to /Library/Frameworks/QtGui.framework/Versions)

[Yohann.V]

I just would to thank you, i spend a whole week on a similar issue and this page saved me. Thanks again.