org.apache.tools.ant.taskdefs.optional.ANTLR was not found when building

[diogoleal]

I'm compiling version 3.0a11, but is experiencing an error when I run "ant run."

BUILD FAILED
/home/diogo/Downloads/processing-processing-0238-3.0a11/build/build.xml:286: The following error occurred while executing this line:
/home/diogo/Downloads/processing-processing-0238-3.0a11/build/build.xml:336: The following error occurred while executing this line:
/home/diogo/Downloads/processing-processing-0238-3.0a11/java/build.xml:37: Problem: failed to create task or type antlr
Cause: the class org.apache.tools.ant.taskdefs.optional.ANTLR was not found.
        This looks like one of Ant's optional components.
Action: Check the optional que JAR Appropriate exists in
        - / Usr / share / apache-ant / lib
        - / Home / diogo / .ant / lib
        -a directory added on the command line with the argument -LIB
 
Do not panic, this is a common problem.
The commonest cause is a missing JAR.
 
This is not a bug; it is a configuration problem

The full error message is here -> http://pastebin.com/rQ9ZQXzv

From the little I have understanding of the message, it seems to lack the antlr, did his installation, yet the error message is displayed.

I did the tests running antlr via command line and appeared to function properly.

Downloads % antlr   
ANTLR Parser Generator  Version 4.5
 -o ___              specify output directory where all output is generated
 -lib ___            specify location of grammars, tokens files

Yet the error message does not change.

I downloaded antlr-4.5-complete.jar and antlr-runtime-4.5.1.jar and copy to the /usr/share/apache-ant/lib/ rename these files by removing the version(ex. antlr-runtime.jar), and also tried to leave only antlr.jar, yet the
compilation does not work.

The reason I'm compiling this is what I'm packing the processing for the Void Linux

[benfry]

That looks like you have an alternate version of antlr somewhere in your CLASSPATH. The build instructions are correct as they are: there's no need to install antlr; you need the exact version that's included in the repo. Other versions are not compatible, which is what you're seeing here.

[benfry]

No response; closing.

[thaolt]

Hello,

I have just encountered the same issue when trying to compile processing from source (branch master ,cloned on June 19 2016).

My system specs:
Debian 8 x86_64
java-8-oracle
ant-1.9.7

At first I tried to manipulate env. CLASSPATH variable. No success. Then tried to edit build/shared/tools/MovieMaker/build.xml (task javac) to include path to $ANT_HOME/lib, because I thought it's need ant-antlr.jar, still no luck. Google took me here.

Finally, I downloaded ant-optional-1.5.4.jar from http://mvnrepository.com/artifact/ant/optional/1.5.4 and put it in $ANT_HOME/lib. Everything works. Processing was built and run. Hope this would help anyone having the same issue.

[0181532686cf4a31163be0bf3e6bb6732bf]

Same bug here, running Gentoo amd64. Oracle Java 1.8.92, ant 1.9.2. System-wide installed antlr did not work.

[0181532686cf4a31163be0bf3e6bb6732bf]

Finally did as @spthaolt advised, but moved jar to /usr/share/ant-core/lib/

[github-actions]

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