QtCreator 2.4 - impossible to find "Add Library" in IDE
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We just needed to tell the linker to include the QtNetwork module in the g++ compiler arguments. We even found the instructions at http://doc.qt.nokia.com/qtcreator-2.4/creator-project-qmake-libraries.html. However, the first two instructions didn't correctly tell us how to get to the Add Library dialogue. In the end, we were so frustrated with it that we manually opened the project .pro file in a text editor and added the line "LIBS += -lQtNetwork" and now it works correctly. But just a note for dev that this functionality was not easy to use.