Objective C++ and Qt
I would like to mix up objective C++ and Qt to work bluetooth in my mac desktop project. here is what I did for testing and it's not working. It's 'no sense code', but I would like to run it without errors:
QT += core gui
TARGET = untitled
TEMPLATE = app
SOURCES += main.cpp
OBJECTIVE_HEADERS += mainwindow.h
OBJECTIVE_SOURCES += mainwindow.mm
#endif // MAINWINDOW_H
NSString *s= @"string"; //if I take this line in a comment of corse it's working
Why it doesn't work?
You need to add this line to your .pro file:
LIBS += -framework Foundation
really helpful, thank you Volker
If you're using Qt Creator, then unfortunately the error pane doesn't show that useful error messages. It's just a "symbol(s) not found" and "collect2: ld returned exit status 1". You should go to the compilation pane then, the error messages there are more elaborate.
In your special case here, if you use a Mac framework, you will have to add it to the LIBS variable. Some of them are added by Qt by default, some need manual addition.