ZBar is an open source software suite for reading bar codes from various sources, including webcams. As its development stopped in 2012, I took the task of keeping it updated with the V4L2 API. This is the main repository for it. There's a clone at at LinuxTV.org, and another one at gitlab.
Running
make dist
fails with the error:This appears to be caused by commit https://github.com/mchehab/zbar/commit/4703c4e531b024f476fedc3d7b9d229c48458cdf which removed the file
zbar-qt.pc.in
from the tree but left it still referenced inMakefile.am
: