When you set a variable on the make command line that is not a known control variable, make emits a note like this:
Note: Command line contains non-control variables: * MODULES= * IDEA_OUTPUT=/mnt/h/openjdk/git-jdk2/.idea Make sure it is not mistyped, and that you intend to override this variable. 'make help' will list known control variables. Since [JDK-8347825](https://bugs.openjdk.org/browse/JDK-8347825), this happens whenever you run idea.sh, and it is confusing to users. I introduce a general way of silencing such complaints using the new control variable `ALLOW`, and start by applying it on the idea.sh script. ------------- Commit messages: - 8348586: Optionally silence make warnings about non-control variables Changes: https://git.openjdk.org/jdk/pull/23302/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=23302&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8348586 Stats: 14 lines in 3 files changed: 6 ins; 0 del; 8 mod Patch: https://git.openjdk.org/jdk/pull/23302.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/23302/head:pull/23302 PR: https://git.openjdk.org/jdk/pull/23302
