CMake/Help/release/dev/set-env-var-first-run.rst at 6daf38dec66db7eec35a40f1c8ec6ca2546c96ce - CMake - Gitea - ZeroTwo

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Craig Scott 05e510bf0b CMP0132: Don't set compiler environment variables on first run

When running CMake for the first time in a build tree, for some
generators CMake would set compiler environment variables
like CC, CXX, etc. when the corresponding language is enabled.
That behavior was never documented and can result in different
behavior between the first and subsequent runs. Add a policy
to no longer set those environment variables.

Fixes: #21378

2022-03-29 09:42:59 -04:00

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 set-env-var-first-run
 ---------------------
 * CMake no longer sets environment variables like :envvar:`CC`, :envvar:`CXX`,
   etc. when enabling the corresponding language during the first CMake run in
   a build directory. See policy :policy:`CMP0132`.