CMake: Handle Dependency Checks With Newer Protobuf

wpilibsuite / allwpilib

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CMake: Handle Dependency Checks With Newer Protobuf #6609

Closed mfisher31 closed 2 months ago

mfisher31 commented 2 months ago

This fix works fine with homebrew installed protobuf on macOS v14.4.1. It, checks for the Absl cmake package in addition to protobuf which is needed by glassnt + modern macOS.

see #6607

Draft until I can check behavior on windows and linux. The Absl check might need to be a homebrew/mac-only dependency.