JSPC Error "Unrecognized option: -v0."

Question

Hii All
I get this Error (shown below) when i try to compile my Jsp using ANT builder.What can be the reason behind this error.
Thankx in advance
Vikash
/////////////////////// Error is shown below ////////////////////////////////.
Buildfile: build.xml
jspc:
compile:
[jspc] Compiling 79 source filesC:\ant\${webapp.path}\dest
[jasperc] error:org.apache.jasper.JasperException: Unrecognized option: -v0.
Use -help for help.
[jasperc] at org.apache.jasper.JspC.setArgs(JspC.java:306)
[jasperc] at org.apache.jasper.JspC.main(JspC.java:230)
all:
BUILD SUCCESSFUL
Total time: 13 seconds
//////////////////////////Build.xml is shown below ////////////////////
<project name="Webapp Precompilation" default="all" basedir=".">
<target name="jspc">
<taskdef classname="org.apache.jasper.JspC" name="jasper2" >
<classpath id="jspc.classpath">
<pathelement location="C:\Program Files\Apache Software Foundation\Tomcat 5.0/../lib/tools.jar"/>
<fileset dir="C:\Program Files\Apache Software Foundation\Tomcat 5.0/bin">
<include name="*.jar"/>
</fileset>
<fileset dir="C:\Program Files\Apache Software Foundation\Tomcat 5.0/server/lib">
<include name="*.jar"/>
</fileset>
<fileset dir="C:\Program Files\Apache Software Foundation\Tomcat 5.0/common/lib">
<include name="*.jar"/>
</fileset>
</classpath>
</taskdef>
<jasper2
validateXml="false"
uriroot="${webapp.path}"
webXmlFragment="${webapp.path}/WEB-INF/generated_web.xml"
outputDir="${webapp.path}/WEB-INF/src" />
</target>
<target name="compile">
<mkdir dir="${webapp.path}/WEB-INF/classes"/>
<mkdir dir="${webapp.path}/WEB-INF/lib"/>
<jspc destdir="${webapp.path}/dest"
srcdir="${webapp.path}/WEB-INF/src"
excludes="**/*.smap">
<classpath>
<pathelement location="${webapp.path}/WEB-INF/classes"/>
<fileset dir="${webapp.path}/WEB-INF/lib">
<include name="*.jar"/>
</fileset>
<pathelement location="C:\Program Files\Apache Software Foundation\Tomcat 5.0/common/classes"/>
<fileset dir="C:\Program Files\Apache Software Foundation\Tomcat 5.0/common/lib">
<include name="*.jar"/>
</fileset>
<pathelement location="C:\Program Files\Apache Software Foundation\Tomcat 5.0/shared/classes"/>
<fileset dir="C:\Program Files\Apache Software Foundation\Tomcat 5.0/shared/lib">
<include name="*.jar"/>
</fileset>
<fileset dir="C:\Program Files\Apache Software Foundation\Tomcat 5.0/bin">
<include name="*.jar"/>
</fileset>
</classpath>
<include name="**" />
<exclude name="tags/**" />
</jspc>
</target>
<target name="all" depends="jspc,compile">
</target>
</project>

Answer 1

Hi,
I've had this problem too. The -v options is meant to set the verbosity of the compilation but it doesn't seem to like it. I tried to see which versions of jasper/ ant were at fault (because an old script of mine broke) but couldn't find it quickly so I simply did a little hack in the ant 1.6.1 source to the file
\apache-ant-1.6.1\src\main\org\apache\tools\ant\taskdefs\optional\jsp\compilers\JasperC.java
where I commented out the line in setupJasperCommand()
private CommandlineJava setupJasperCommand() {
addArg(cmd, "-p", jspc.getPackage());
// addArg(cmd, "-v" + jspc.getVerbose());
addArg(cmd, "-uriroot", jspc.getUriroot());
then rebuilt ant and the problem went away.
Cheers
Evan