RFR: 8339480: Build static-jdk image with a statically linked launcher [v8]

[Jiangli Zhou]

On Fri, 1 Nov 2024 16:09:20 GMT, Magnus Ihse Bursie <ihse at openjdk.org> wrote:

> I finally noticed that you are testing a precompiled HelloWorld class, and I have been running with a source file argument to have java compile it on the fly.
> 
> When I try using a pre-compiled HelloWorld, the linux port works for me too.
> 
> @jianglizhou Can you please verify if you can run this with a .java file directly? To be clear: this works fine on my mac with this PR, and (as I said), I'm pretty certain it used to work at least at some point during development on this PR.
> 
> ```
> ihse at sthihse:/localhome/git/jdk-ALT$ cat > HelloWorld.java
> public class HelloWorld {
>   public static void main(String[] args) {
>     System.out.println("Hello, world!");
>   }
> }
> ihse at sthihse:/localhome/git/jdk-ALT$ javac HelloWorld.java 
> ihse at sthihse:/localhome/git/jdk-ALT$ ./build/linux-x64/images/static-jdk/bin/java HelloWorld 
> Hello, world!
> ihse at sthihse:/localhome/git/jdk-ALT$ ./build/linux-x64/images/static-jdk/bin/java HelloWorld.java
> Error: Unable to load main class com.sun.tools.javac.launcher.SourceLauncher in module jdk.compiler
> Caused by: java.lang.UnsatisfiedLinkError: no jimage in system library path: /localhome/git/jdk-ALT/build/linux-x64/images/static-jdk/bin
> Runtime.exit(1) logging failed: Could not initialize class jdk.internal.module.SystemModuleFinders$SystemImage
> ihse at sthihse:/localhome/git/jdk-ALT$ 
> ```

I can reproduce the issue with running a `.java` directly using static-jdk/bin/java built from your branch. The issue does not exist with the `bin/javastatic` built from https://github.com/openjdk/leyden/tree/hermetic-java-runtime (I just tested). I have a hunch of where is problem might be. I'll do some debugging. 


$ bin/java /usr/local/google/home/jianglizhou/tests/HelloWorld.java
Error: Unable to load main class com.sun.tools.javac.launcher.SourceLauncher in module jdk.compiler
Caused by: java.lang.UnsatisfiedLinkError: no jimage in system library path: /usr/local/google/home/jianglizhou/github/jdk_pull_20837/build/linux-x86_64-server-slowdebug/images/static-jdk/bin
Runtime.exit(1) logging failed: Could not initialize class jdk.internal.module.SystemModuleFinders$SystemImage

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PR Comment: https://git.openjdk.org/jdk/pull/20837#issuecomment-2452668656