RFR: 7903989: Default to no error if existing, make parent directories as needed

[Iris Clark]

On Mon, 14 Apr 2025 15:44:55 GMT, Christian Stein <cstein at openjdk.org> wrote:

> Prior this change, most usages of the `$(MKDIR)` variable in jtreg's self-tests had to add `-p` in order to not fail with an "error if existing, make parent directories as needed". Many usages are lacking the flag and in concurrent test scenarios, this leads to flaky tests.
> 
> This PR appends `-p` to each expansion of `$(MKDIR)`. Hard-coded `-p` will be removed; stray/duplicate `-p` flag don't seem to be a problem for `mkdir`'s option parser. I didn't see any "-p specifed more than once" warnings.
> 
> This PR also cleans up redundant `-f` and `-rf` arguments from `$(RM) ...` calls, as they are very close in nature and location of the `$(MKDIR)` calls, as `Defs.gmk` declares `RM` to expand with `-rf`.

I appreciate the cleanup for `$(RM)`.

Thanks.

Marked as reviewed by iris (Reviewer).

test/jdkOptsTest/JDKOptsTest.gmk line 38:

> 36: 		-Xlint -Werror \
> 37: 		-encoding ASCII $(TESTDIR)/jdkOptsTest/JDKOptsTest.java
> 38: 	$(RM) -rf $(@:%.ok=%)/tmp

`$(RM)` is already defined to include the `-rf`, so suggest you remove those options here

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Marked as reviewed by iris (Reviewer).

PR Review: https://git.openjdk.org/jtreg/pull/259#pullrequestreview-2768497543
PR Review: https://git.openjdk.org/jtreg/pull/259#pullrequestreview-2768741570
PR Review Comment: https://git.openjdk.org/jtreg/pull/259#discussion_r2044679365