RFR: 8338290: Xcode project generator for hotspot [v3]

[Erik Joelsson]

On Wed, 21 Aug 2024 14:07:00 GMT, Magnus Ihse Bursie <ihse at openjdk.org> wrote:

>> Add a make target to generate an Xcode project file for Hotspot. 
>> 
>> This PR is the result of a cooperation between me and @gerard-ziemski. Gerard developed the original Xcode generator (as a stand-alone project in https://github.com/gerard-ziemski/xcode), and I have written the build system "glue" to integrate it, and refactored the code to modern JDK standards.
>> 
>> Usage: Run `make hotspot-xcode-project`, and an Xcode project file will be generated in `build/$BUILD/xcode`. You can also have this automatically opened in Xcode by `make open-hotspot-xcode-project` (but note that for repeated runs of this, `make open-hotspot-xcode-project-only` is greatly preferred).
>
> Magnus Ihse Bursie has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Rename $1_LD_JSON to $1_LDFLAGS_FILE

Marked as reviewed by erikj (Reviewer).

To be clear, I've reviewed the build system changes, not the generator itself.

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PR Review: https://git.openjdk.org/jdk/pull/20564#pullrequestreview-2250922231
PR Comment: https://git.openjdk.org/jdk/pull/20564#issuecomment-2302150466