In the embedded case, usually only vendors have (or used to have, who knows if they use source control) the source code. As I said, you have no idea how bad it

In the embedded case, usually only vendors have (or used to have, who knows if they use source control) the source code. As I said, you have no idea how bad it is unless you've had to work with that crap. Maybe have a look at "Bad" in this classic. https://www.dolphin-emu.org/blog/2013/09/26/dolphin-emulator-and-opengl-drivers-hall-fameshame/?cr=de https://www.dolphin-emu.org/blog/2013/09/26/dolphin-emulator... Edit: right, you can backport fixes and features while keeping the ABI stable. That is what Google seems to be doing with Android kernels to some degree.