Gentoo Packages

media-libs/opencv: Enable qrcode decoding via <pkg>media-libs/quirc</pkg>
media-video/ffmpeg: Enable QR decoding support via <pkg>media-libs/quirc</pkg>
media-video/ffmpeg-compat: Enable QR decoding support via <pkg>media-libs/quirc</pkg>

Warning: USE flag 'quirc' is used in ebuilds/metadata but is not defined in profiles/use.desc

Package	Local Description (use.local.desc)	Metadata Description (metadata.xml)
media-libs/opencv	Enable qrcode decoding via media-libs/quirc	Enable qrcode decoding via <pkg>media-libs/quirc</pkg>
media-video/ffmpeg	Enable QR decoding support via media-libs/quirc	Enable QR decoding support via <pkg>media-libs/quirc</pkg>
media-video/ffmpeg-compat	Enable QR decoding support via media-libs/quirc	Enable QR decoding support via <pkg>media-libs/quirc</pkg>

USE Flag: quirc