undefined reference to `AddLinkFolder::AddLinkFolder(QWidget*)'

[mcosta]

I think the problem is

LIBS += -L../../Test/Lib-lAddFolder

LIBS += -L../../Test/Lib-lAddFolder

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add a blank before -lAddFolder

LIBS += -L../../Test/Lib -lAddFolder

LIBS += -L../../Test/Lib -lAddFolder

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