Non Qt application linking Qt library

kumararajas

Hello,

I have a Qt based library. And I want to link with non Qt application.

When I link it, the linkers get mad about Qt libraries. It expects me to link Qt libraries as well.

Is this an expected behaviour?

Can I not just link only the library I want?

Thanks,
Kumara

Pablo J. Rogina

Could it be possible you share your Qt library project file? I guess your library will depend at least on Qt Core

kumararajas

@Pablo-J.-Rogina

Hi,

Here is the pro file content.

QT       += core gui

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

TARGET          = uicore
TEMPLATE        = lib
CONFIG         += staticlib

# Find the built application here..
DESTDIR         = ../lib

Yes, as you mentioned, my library depends on Qt Core and Qt Gui.

I understand that my library needs these Qt libraries.

But, I am trying to avoid linking Qt libraries for the non Qt application.

Pablo J. Rogina

I understand that for 'staticlib' to work, you first have to build Qt statically. You may want to take a look at this post.
And please also consider that using Qt statically is very likely that require a commercial license for Qt. There's much debate about LGPL and static linking, you may need some legal advice in that case. I guess this post is a good starting point to understand the possible cases