Bug 96050

Summary: Allow java/javavmwrapper to report the location of the JVM
Product: Ports & Packages Reporter: Jean-Baptiste Quenot <jbq>
Component: Individual Port(s)Assignee: Greg Lewis <glewis>
Status: Closed FIXED    
Severity: Affects Only Me CC: java
Priority: Normal    
Version: Latest   
Hardware: Any   
OS: Any   
Attachments:
Description Flags
file.diff none

Description Jean-Baptiste Quenot 2006-04-19 16:50:15 UTC 
Please see discussion at
http://lists.freebsd.org/pipermail/freebsd-java/2006-April/005152.html

The Java ports infrastructure provides ${JAVA_HOME} and ${JAVA} on build-time to
a port's Makefile, but it would be great to set the Java version requirement on
a per-port basis in the rc flags.  This requires to get JAVA_HOME and java
executable path from javavmwrapper at runtime.

The idea is to make javavm recognize two special environment variables:

JAVAVM_PRINT_JAVA_HOME

  When set, find the best suitable JVM and print the corresponding value of
  JAVA_HOME instead of executing the java program


JAVAVM_PRINT_JAVA_PROGRAM

  When set, find the best suitable JVM and print the path of the Java program
  instead of executing it

For this to  work correctly, we need javavm to  stop upon failure.  Until  now,
when  the  java program  cannot  be exec-uted,  javavm issues a warning and goes
on to the next JVM.

Thanks in advance!
Comment 1 Edwin Groothuis freebsd_committer freebsd_triage 2006-04-19 16:56:08 UTC 
Responsible Changed
From-To: freebsd-ports-bugs->glewis

Over to maintainer
Comment 2 Greg Lewis freebsd_committer freebsd_triage 2006-06-08 19:01:28 UTC 
State Changed
From-To: open->closed

Thanks for the ideas.  I've implemented them in a different way using a 
single variable (JAVAVM_DRYRUN).  You should still be able to get the 
information you need (and more).  An example of extracting it is in the 
javavm manual page.