Imported from GitHub PR https://github.com/abseil/abseil-cpp/pull/1706 Follow Google OSS policy. Merge 2ba42b9e5a9ac8c9fe0609fd1ac4cad24714727a into af4c589e Merging this change closes #1706 COPYBARA_INTEGRATE_REVIEW=https://github.com/abseil/abseil-cpp/pull/1706 from gruenich:feature/cmake-3-16 2ba42b9e5a9ac8c9fe0609fd1ac4cad24714727a PiperOrigin-RevId: 650646746 Change-Id: Ib600608fbc727161c8b8e69cda9a09637188fef8
