Can't run Ant on ext environment from within Eclipse

[Joel Kozikowski, modificado hace 16 años.]

Got another one:

Just tried to build my extension environment from within Eclipse. I ran the "clean" target, and got the message:

Task cannot continue because ECJ is not installed.

ECJ was automatically installed. Please rerun your task.

Of course, I re-ran the task again, and got the same message (Eclipse 3.2).

I went out to command line, and was able to execute the clean target. I'm not yet able to execute the "deploy" target due to build errors (looks like some changes to the API that broke my code, so I'm working on that next.

ECJ == what?

Eclipse Compiler for Java?

[Alexander Chow, modificado hace 16 años.]

Good guess. Yah, Jikes development has died down and ECJ (Eclipse's compiler) is becoming a popular alternative to javac that produces optimized bytecode that is fully JDK 1.5 compliant (unlike Jikes 1.22). See http://support.liferay.com/browse/LEP-4273 and http://download.eclipse.org/eclipse/downloads/drops/R-3.3.1.1-200710231652/index.php#JDTCORE.

[Neil Griffin, modificado hace 16 años.]

Joel, the Eclipse ejc.jar file needs to be copied into your $ANT_HOME/lib folder in order to use EJC with an external Ant distribution.

[Michael Young, modificado hace 16 años.]

Looks like we made the default "modern" for the source code but forgot to update that in the ext build files.

[Michael Young, modificado hace 16 años.]

To fix this in eclipse, however, you need to edit the eclipse ant runtime preferences and add the ecj.jar file to the classpath (it should have been copied to your $ANT_HOME/lib directory.

[Joel Kozikowski, modificado hace 16 años.]

Similar problem occurred, and I goofed and started another thread rather than appending it here. This post is for the cross reference in case others have this problem.

[Borxa Varela Bouzas, modificado hace 13 años.]

Joel Kozikowski:

Got another one:

Just tried to build my extension environment from within Eclipse. I ran the "clean" target, and got the message:

Task cannot continue because ECJ is not installed.

ECJ was automatically installed. Please rerun your task.

Of course, I re-ran the task again, and got the same message (Eclipse 3.2).

Are you using JRE from Eclipse core?

For check this, you need to select the build.xml context menu "Run As -> External Tools Configuration" and go to the JRE tab, there check "Run in the same JRE as the workspace".

[Kushal Jayswal, modificado hace 9 años.]

Hi Joel,

I was facing the same issue. Below are some steps to fix up the life .

1. In Eclipse, Go To Window->Preferences->Ant->Runtime
2. Select Ant Home Entries (Default)
3. Add External JAR... ecj.jar. (Available in the lib folder of the Liferay Plugins SDK)