The gRPC compilation test results should probably be cached instead of being rerun every time cmake is invoked:
-- Checking support for TlsCredentialsOptions (gRPC >= 1.36)... -- TlsCredentialsOptions (for gRPC 1.36) not found in grpc::experimental. -- Checking support for TlsCredentialsOptions (gRPC >= 1.34)... -- Found approximate gRPC version: 1.34 (ARROW_FLIGHT_REQUIRE_TLSCREDENTIALSOPTIONS=)
- links to