Using QCA with QT Creator

[mrstif]

Hey!

I'm trying to use QCA (QT Criptography Architecture) in QT creator.

QT creator shows me the classes and methods of QCA once I #include <QtCrypto/QtCrypto> but when I build a program it says "undefined reference" to all the stuff I'm using from QCA.

I realize that the problem should be related to linking the QCA libraries better but how do I do it?

Btw, I'm using Ubuntu 64bit and I installed qca through the synaptic package manager (libqca2, libqca2-doc, libqca2-dev).

[Lykurg]

How does your pro file looks like?

[mrstif]

Like this:

HEADERS += httpwindow.h
SOURCES += httpwindow.cpp \
           main.cpp
FORMS += authenticationdialog.ui \
         idchoicedialog.ui
QT += network
 
symbian: include($$QT_SOURCE_TREE/examples/symbianpkgrules.pri)

HEADERS += httpwindow.h
SOURCES += httpwindow.cpp \
           main.cpp
FORMS += authenticationdialog.ui \
         idchoicedialog.ui
QT += network

symbian: include($$QT_SOURCE_TREE/examples/symbianpkgrules.pri)

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The qca library is in /usr/lib/libqca.so.2.0.2 ...

[Lykurg]

You have to link against the library. See the LIBS variable. (You find an explanation in the qmake documentation.) Try it yourself, but when you stuck, ask again.

[mrstif]

I solved it by adding LIBS += -L /usr/lib/ -lqca

Thanks for the tip!