Undefined reference to _imp__zn5..........Ev

Salvatello

I have a project like that:
main.cpp
Libreria.h
provaLibreria.pro

I run the project, and I have these errors:

undefined reference to _imp__zn5..........Ev
undefined reference to _imp__zn5..........Eb
undefined reference to _imp__zn5..........sb
..
..

an error for each function declared in libreria.h
I know that I need to add an external library
libreria.lib

I do it this way:
@win32:CONFIG(release, debug|release): LIBS += -L$$PWD/../LIBLIBRERIA/release/ -lLibreria
else:win32:CONFIG(debug, debug|release): LIBS += -L$$PWD/../LIBLIBRERIA/debug/ -lLibreria
else:unix: LIBS += -L$$PWD/../LIBLIBRERIA/ -lLibreria

INCLUDEPATH += $$PWD/../LIBLIBRERIA/debug
DEPENDPATH += $$PWD/../LIBLIBRERIA/debug

win32-g++:CONFIG(release, debug|release): PRE_TARGETDEPS += $$PWD/../LIBLIBRERIA/release/libreria.a
else:win32-g++:CONFIG(debug, debug|release): PRE_TARGETDEPS += $$PWD/../LIBLIBRERIA/debug/libreria.a
else:win32:!win32-g++:CONFIG(release, debug|release): PRE_TARGETDEPS += $$PWD/../LIBLIBRERIA/release/libreria.lib
else:win32:!win32-g++:CONFIG(debug, debug|release): PRE_TARGETDEPS += $$PWD/../LIBLIBRERIA/debug/libreria.lib
else:unix: PRE_TARGETDEPS += $$PWD/../LIBLIBRERIA/libreria.a@

comes this error:
no rule to make taarget '....../..../..../libreria.a', needed by 'debug\provaLibreria.exe'. Stop.

What does this error?
where it exits out the file libreria.a?

hsierra00

Hi
Generally this error is associate with linked error. If you use signal and slot mechanism remember inherent by QObject and include
QT += core

and in your header (.h) put
Q_OBJECT

please put more information of the problem...

Salvatello

Q_OBJECT is not the problem.

I try to explain better:
I have a cpp file and a class in salvatello libreria.h
I salvatello * g.
then g-> function_name.
libreria.h also uses libreria.lib.

if not iserisco library come out these errors:
undefined reference to imp_zn5……….Ev
undefined reference to imp_zn5……….Eb
undefined reference to imp_zn5……….sb

I suppose they are linked to the fact that I do not add the libreria.lib

I then add static library-and I added this code:
@win32:CONFIG(release, debug|release): LIBS += -L$$PWD/../LIBLIBRERIA/release/ -lLibreria
else:win32:CONFIG(debug, debug|release): LIBS += -L$$PWD/../LIBLIBRERIA/debug/ -lLibreria
else:unix: LIBS += -L$$PWD/../LIBLIBRERIA/ -lLibreria

INCLUDEPATH += $$PWD/../LIBLIBRERIA/debug
DEPENDPATH += $$PWD/../LIBLIBRERIA/debug

win32-g++:CONFIG(release, debug|release): PRE_TARGETDEPS += $$PWD/../LIBLIBRERIA/release/libreria.a
else:win32-g++:CONFIG(debug, debug|release): PRE_TARGETDEPS += $$PWD/../LIBLIBRERIA/debug/libreria.a
else:win32:!win32-g++:CONFIG(release, debug|release): PRE_TARGETDEPS += $$PWD/../LIBLIBRERIA/release/libreria.lib
else:win32:!win32-g++:CONFIG(debug, debug|release): PRE_TARGETDEPS += $$PWD/../LIBLIBRERIA/debug/libreria.lib
else:unix: PRE_TARGETDEPS += $$PWD/../LIBLIBRERIA/libreria.a@

comes this error:
no rule to make taarget ‘……/…./…./libreria.a’, needed by ‘debug\provaLibreria.exe’. Stop.

libreria.a is it?
I do not understand what this means error

SGaist

Hi,

Maybe a silly question but does libreria.a exists ?

Salvatello

no does not exist. I only libreria.lib.
if I make the automatic insertion of the external library, I select libreria.lib, and I generate that code. Libreria.a not know where to come out.