Undefined reference on libdc1394

Question

I'm using libdc1394-2.2 for camera Bumblebee2. However, when I try to release bandwith with code below:

if (dc1394_iso_release_bandwidth(camera, val)==DC1394_SUCCESS)
    printf( "Succesfully released %d bytes of bandwidth\n", val);

Throws the next error:

undefined reference to `dc1394_iso_release_bandwidth'

However, the function 'dc1394_iso_release_bandwidth', is included in 'iso.h' and this header is included in the main program.

Someone knows how solve the problem?

Answer 1

You're correct, that function is indeed listed in the dc1394-2 stream iso.h header file and with no complex conditional compilation which may cause it to not appear in your translation unit.

One thing that may be an issue is the rather common name iso.h - I'd modify your g++ compilation statement to include a -H flag, which should list the headers being loaded up. It's possible that the iso.h header file you're loading is not actually the dc1394 one.

A long shot, I know, but worth checking if only to discount the possibility.