[Issue 20727] `make -f posix.mak clean` requires a D compiler

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=20727

--- Comment #1 from Dlang Bot <dlang-bot at dlang.rocks> ---
@Geod24 created dlang/tools pull request #399 "Work around issue 20727 by
passing BOOTSTRAP when doing clean" mentioning this issue:

- Work around issue 20727 by passing BOOTSTRAP when doing clean

  As explained in issue 20727, AUTO_BOOTSTRAP is not required for 'clean',
  but still triggers the error.

https://github.com/dlang/tools/pull/399

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