RFR: 8263154: [macos] DMG builds have finder errors

[Alexander Matveev]

On Thu, 15 Apr 2021 01:24:04 GMT, Alexander Matveev <almatvee at openjdk.org> wrote:

> - Issue was reproducible when install-dir points to some invalid location.
>  - Fixed by defaulting DMG drag and drop location to /Applications folder and --install-dir will be ignored with warning for DMG.
>  - I do not see any way to support other valid, but uncommon locations for drag and drop. For example: /Users/USERNAME/Applications is not possible to support since user name is not known. /usr/bin requires root privileges and should contain symbolic links. Locations which does not exist also not possible to support, since DMG cannot create paths. So /Applications/MyCompany is not possible for DMG.

Should we always show warning messages, especially that output will be different from what user expected? I can switch to Log.verbose(), but I still think it should be displayed always.

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PR: https://git.openjdk.java.net/jdk/pull/3505