RFR: 8350594: Misleading warning about install dir for DMG packaging

[Michael Hall]

> On Feb 26, 2025, at 9:22 PM, Michael Hall <mik3hall at gmail.com> wrote:
> 
>> 
>> I don’t get that if I delete the existing dmg first.
>> 
>> Full verbose output at…
>> 
>> http://mikehall.pairserver.com/rt.txt
> 

Is there a how-to on using --runtime-image on MacOS? How are you supposed to get a valid runtime to put into JavaVirtualMachines?

I installed jdk 23 to bootstrap a jdk build. I jpackage’d that.

jpackage --verbose -n rt -t dmg --runtime-image /Users/mjh/Documents/GitHub/jdk/build/macosx-aarch64-server-release/jdk

The resulting jdk actually appears to have a similar directory layout to what is in JavaVirtualMachines. 

It lacks the _CodeSignature, Info.plist, and MacOS file and directories.

It still is not found with either “java —version” or “/usr/libexec/java_home”

I tried giving it a more standard name in case naming convention mattered.

The built is jdk 25 and the 23 bootstrap still shows current. 

I thought maybe using that runtime to build an application then jpackage would make it a valid MacOS runtime

But jpackage --runtime-image with the runtime from that gets a couple no such file exceptions on
runtime/Contents/Home/lib/libnio.dylib.dSYM/Contents/Info.plist

The app gets
HalfPipe.app/Contents/MacOS/HalfPipe
Error: could not open `/Users/mjh/HalfPipe/HalfPipe_jpkg/outputdir/HalfPipe.app/Contents/runtime/Contents/Home//lib/jvm.cfg’

Possibly not a bug but not obviously easy either. 
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