Every version of CHARM++ is already provided with a compiled version of the debugger, and is located under charm/java/bin/charmdebug. This compiled version is built with java 1.4.2.
In case of necessity, to rebuild the debugger, checkout a fresh copy of charm and then
cd charm/java; ant clean; ant;
This will recreate charm/bin/charmdebug for your java version.
October 08, 2008
CharmDebug Homepage
Charm Homepage