Uwe Schindler created LUCENE-6174:
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Summary: Improve "ant eclipse" to select right JRE for building
Key: LUCENE-6174
URL: https://issues.apache.org/jira/browse/LUCENE-6174
Project: Lucene - Core
Issue Type: Improvement
Components: general/build
Reporter: Uwe Schindler
Assignee: Uwe Schindler
Whenever I run "ant eclipse" the setting choosing the right JVM is lost and has
to be reassigned in the project properties.
In fact the classpath generator writes a new classpath file (as it should), but
this onl ycontains the "default" entry:
{code:xml}
<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
{code}
Instead it should preserve something like:
{code:xml}
<classpathentry kind="con"
path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/jdk1.8.0_25"/>
{code}
We can either path this by a Ant property via command line or user can do this
with "lucene/build.properties" or per user. An alternative would be to generate
the name "jdk1.8.0_25" by guessing from ANT's "java.home". If this name does
not exist in eclipse it would produce an error and user would need to add the
correct JDK.
I currently have the problem that my Eclipse uses Java 7 by default and
whenever I rebuild the eclipse project, the change to Java 8 in trunk is gone.
When this is fixed, I could easily/automatically have the "right" JDK used by
eclipse for trunk (Java 8) and branch_5x (Java 7).
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