- drops support for proto2
- fixes compatibility with protobuf >= 22.0 (which we did not yet bump)
- to be compatible with new protobuf versions c++17 is now required
when building with protoc (which we only do for the host package) [0]
hence require host gcc >= 7 for c++17 support, propagate to
depending packages
- the license file has changed with a change of the copyright years,
nothing else
[0] https://github.com/protobuf-c/protobuf-c/pull/673
Signed-off-by: Michael Nosthoff <buildroot@heine.tech>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
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