Step #3: GCB: https://console.cloud.google.com/cloud-build/builds;region=us-east1/16a86463-87c8-4b20-ae98-bc8913b3de7a;tab=detail?project=cloud-cpp-testing-resources
Step #3: Raw: https://storage.googleapis.com/cloud-cpp-community-publiclogs/logs/google-cloud-cpp/7046/2fcd9ef25cf6c6221ea8af73def9e9d0ebe05ea5/fedora-34-cmake-install/log-16a86463-87c8-4b20-ae98-bc8913b3de7a.txt

We upgraded grpc from 1.38.1 to 1.39.0 and our cmake-install build became unusably slow, so we rolled it back. To roll this change forward git revert ba41d5a99818922b09eee5da148786c1d68c17f5 (ba41d5a)

The slow line is:

The line is slow when checking a module that links with grpc, like google_cloud_cpp_grpc_utils

I suspect there may be some change in this version of grpc to its pkg-config files. Maybe it's also exposing a bug in pkg-config itself, maybe similar to #6846

NOTE: We need to figure this out because we need to be able to upgrade gRPC