QAudioFormat. Undefined reference to '_imp_....'

Asked Sep 30 '13 at 10:59

Active Sep 30 '13 at 10:59

Viewed 739 times

I'm using Qt 5.1.1, Qt Creator 2.8.1 on Win7. When I compile program I get lots of this type errors:

*.cpp:85: undefined reference to `imp__ZN12QAudioFormatC1Ev'

When I double click to them It refers to this part of code:

 QAudioFormat format;
 format.setSampleRate(channel->payloadType().clockrate());
 format.setChannelCount(channel->payloadType().channels());
 format.setSampleSize(16);
 format.setCodec("audio/pcm");
 format.setByteOrder(QAudioFormat::LittleEndian);
 format.setSampleType(QAudioFormat::SignedInt);

My .pro file:

...
QT += core gui network xml multimedia
CONFIG += mobility
MOBILITY += multimedia
...

Where is my error? Thank you before hand.

asked Sep 30 '13 at 10:59

Bobur

You probably need to link with a Qt library of some sort. – Jonathan Potter Sep 30 '13 at 11:00
There is: QT += core gui network xml multimedia – Bobur Sep 30 '13 at 11:02
did you ``#include ``? – Sebastian Lange Sep 30 '13 at 11:03
I did, the same error... – Bobur Sep 30 '13 at 11:05
The only thing I can think of is to `clean` the project, run `qmake` again, and then build the project. You're linking to the correct `QT` directive, so unless it's not built the Makefile correctly there shouldn't be an issue. – Nicholas Smith Sep 30 '13 at 11:14
Looks like you're linking to an incompatible library version. Qt 4.x is not binary compatible with Qt5.x but minor versions are supposed to be. Also, libraries compiled with different compilers are not binary compatible. i.e. MinGW compiled libraries will not link in with MSVC linker, nor vice versa – RobbieE Sep 30 '13 at 11:32
I did, all works, thank you... – Bobur Sep 30 '13 at 11:33

QAudioFormat. Undefined reference to '_imp_....'

0 Answers0