Help/CMP0102: mention the varible that controls CMP0102 warnings (!6275) · Merge requests · CMake / CMake · GitLab

Ben Boeckel requested to merge ben.boeckel/cmake:Help-CMP0102-mention-warning-variable into master Jun 28, 2021

This was missed in the review of !4150 (merged), but was noticed during discussion of #22353 (closed).

Cc: @craig.scott
Backport: release