fix: load libudev and libdbus at runtime instead of linking them - #271
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devopvoid merged 3 commits intoSep 7, 2026
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The Linux natives linked libudev, so they failed to load on any host without it, although only the V4L2 device manager uses it. The manager now opens libudev.so.1 on construction and binds the symbols it needs, the same way the PulseAudio device manager handles libpulse. A host without libudev gets an exception when it enumerates cameras instead of a load failure.
Only the Linux power management uses libdbus, to ask the screen saver not to start during desktop capture. It now opens libdbus-1.so.3 on first use and binds the symbols it needs. A host without libdbus logs a warning and skips the inhibition instead of failing to load the natives. The dbus headers are still required at build time.
The test runners no longer install the two libraries, so the lanes verify that the natives load without them.
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After #267,
libudevandlibdbuswere the last libraries the Linux natives linked for this library's own code, so they still failed to load on any host without them, although only the V4L2 device manager uses libudev and only the power management uses libdbus. Both now open their library on first use and bind the symbols they need, the same way the PulseAudio device manager handles libpulse. A host without libudev gets an exception when it enumerates cameras, and a host without libdbus logs a warning and skips the screen saver inhibition. Every remaining link-time dependency of the Linux natives now comes from libwebrtc's desktop capturers. The test runners no longer install the two packages, so the lanes verify the natives load without them.