Version:           3.0.1 (using KDE 3.1.5)
Installed from:     (testing/unstable)
Compiler:          gcc version 3.3.3 20031229 (prerelease) (Debian)
OS:          Linux (i686) release 2.4.24-1-686-smp

For ANT projects only, the value of the CLASSPATH dialog is ignored at buildtime.

KDevelop sets CLASSPATH prior to calling ANT, which sets an overriding value.  In the output below, I have added an
    <echo> ecp = ${env.CLASSPATH}"</echo>
to the <target name=compile> section of build.xml.

*CLASSPATH=/home/aumanetz/data/dev/robocode/robocode.jar cd /home/aumanetz/kdd && ant dist -buildfile build.xml -verbose  

<snip>
*[echo] ecp = /usr/share/ant/lib/ant-optional.jar:/usr/share/ant/lib/ant.jar:/usr/share/ant/lib/antlr.jar:/usr/share/ant/lib/bsf.jar:/usr/share/ant/lib/jdepend.jar:/usr/share/ant/lib/junit.jar:/usr/share/ant/lib/jython.jar:/usr/share/ant/lib/log4j-1.2.jar:/usr/share/ant/lib/oro.jar:/usr/share/ant/lib/regexp.jar:/usr/share/ant/lib/xalan2.jar:/usr/share/ant/lib/xercesImpl.jar:/usr/share/ant/lib/xmlParserAPIs.jar:/usr/lib/j2se/1.4//lib/tools.jar"

<snip>

*[javac] Using modern compiler 
*[javac] Compilation arguments: 
*[javac] '-d' 
*[javac] '/home/aumanetz/kdd/build' 
*[javac] '-classpath' 
*[javac] '/home/aumanetz/kdd/build:/usr/share/ant/lib/ant-optional.jar:/usr/share/ant/lib/ant.jar:/usr/share/ant/lib/antlr.jar:/usr/share/ant/lib/bsf.jar:/usr/share/ant/lib/jdepend.jar:/usr/share/ant/lib/junit.jar:/usr/share/ant/lib/jython.jar:/usr/share/ant/lib/log4j-1.2.jar:/usr/share/ant/lib/oro.jar:/usr/share/ant/lib/regexp.jar:/usr/share/ant/lib/xalan2.jar:/usr/share/ant/lib/xercesImpl.jar:/usr/share/ant/lib/xmlParserAPIs.jar:/usr/lib/j2se/1.4/lib/tools.jar' 
*[javac] '-sourcepath' 
*[javac] '/home/aumanetz/kdd' 
*[javac] '-g:none'