error: undefined reference to `snd_device_name_hint'

In Fo

In my project I added a class. In its .h file I started typing:

#include <alsa/asoundlib.h>

When I typed al, QtCreator allowed me to pick alsa/
When I typed asou, it allowed me to pick asoundlib.h.
This leads me to believe that alsa development library is installed and visible to QtCreator.
Next, I start typing code in the body of the class.

    name = snd_device_name_get_hint(*n, "NAME");

When I type snd_device, it allows me to pick the function above from the list of three similar functions. This leads me to believe that the included ALSA API is visible to QtCreator.

When I Ctrl-click on the function name, QtCreator opens ALSA's control.h where it is declared.
So far it is all nice and dandy.

But when I build the project, after running qmake, of course, it throws the error in the subject.
So which tool still does not know that the proper .h files are included?

Christian Ehrlicher

You also need to link against the alsa libs I would guess.

In Fo

Thank you!

For posterity, this means opening .pro file in editor, right-clicking empty space, and selecting "Add library", then browsing to /lib64 and selecting libasound.so, which after un-checking Windows and Mac platforms then adds the following line to the .pro file:

unix:!macx: LIBS += -lasound

Then run qmake and build.

Christian Ehrlicher

@In-Fo Please mark this topic as solved then, thx.