FDT/Eclipse Ant Configuration – Same JRE as Workspace (Update!)

 Apr, 29 - 2010   no comments   Uncategorized

(See the original post)

I messed around with this quite a bit but was never able to get things to work exactly as I’d hoped. I even got as far as using the XmlTask Ant extensions to modify the launch file on the fly. Unfortunately, I couldn’t figure out how to get Eclipse to reload the modified configuration without completely restarting, so that path resulted more or less in a dead end.

What I did figure out is how to make your launch configurations shareable via SVN, so that only one team member (yours truly) has to deal with builds and launch configurations. Everyone else can update from SVN and run ANT tasks without being familiar with all these grisly details.

The last post mentioned (with no small amount of grumbling) that you have to change the JRE setting to “Same JRE as Workspace” on every single build target you create (or rename). This is incredibly annoying. If you go to the same dialog: Run >> External Tools >> External Tools Configurations…

Check out the Common Tab. Here you can pull the launch file configuration into the project and out of the workspace by selecting “Shared file” instead of “Local file”. This lets you share launch configurations with the rest of the team.

If you wish, you can create a template for new build targets. If you get the file naming convention right, you should be able to get away with defining new build targets without ever needing to visit the External Tools Configurations dialog. I’ve got a mixed OS X / Windows Team, so I made some modifications to Eclipse’s default launch file output. In short, I removed explicit references to my OS X default JVM.

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<launchConfiguration type="org.eclipse.ant.AntLaunchConfigurationType">
<booleanAttribute key="org.eclipse.ant.ui.DEFAULT_VM_INSTALL" value="false"/>
<listAttribute key="org.eclipse.debug.core.MAPPED_RESOURCE_PATHS">
<listEntry value="/PROJECT_NAME/build.xml"/>
<listAttribute key="org.eclipse.debug.core.MAPPED_RESOURCE_TYPES">
<listEntry value="1"/>
<stringAttribute key="org.eclipse.jdt.launching.CLASSPATH_PROVIDER" value="org.eclipse.ant.ui.AntClasspathProvider"/>
<stringAttribute key="org.eclipse.jdt.launching.PROJECT_ATTR" value="PROJECT_NAME"/>
<stringAttribute key="org.eclipse.jdt.launching.SOURCE_PATH_PROVIDER" value="org.eclipse.ant.ui.AntClasspathProvider"/>
<stringAttribute key="org.eclipse.ui.externaltools.ATTR_ANT_TARGETS" value="BUILD_TARGET_NAME"/>
<stringAttribute key="org.eclipse.ui.externaltools.ATTR_LOCATION" value="${workspace_loc:/PROJECT_NAME/build.xml}"/>
<stringAttribute key="process_factory_id" value="org.eclipse.ant.ui.remoteAntProcessFactory"/>

Note the spots where you should substitute your own PROJECT_NAME and BUILD_TARGET_NAME.

I tried setting the DEFAULT_VM_INSTALL to true, and it worked, but Eclipse insisted on mucking with it as soon as I visited the External Tools Configurations dialog again.

I’m storing my launch files in .settings and setting the filename to:

Your mileage will almost certainly vary.

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