Ensure the (monolithic, no dependency) eclipse package builds in pbuilder chroot

Builds in Ubuntu Jaunty.

Failed to build in emulated Debian Sid. The Sid environment was created with pbuilder in Ubuntu Intrepid (I hope I did it correctly).

bash debian/scripts/build.sh
Buildfile: jdtcoresrc/compilejdtcorewithjavac.xml

init:
    [unzip] Expanding: /tmp/buildd/eclipse-3.4.1/build/jdtcoresrc/src/ecj.zip into /tmp/buildd/eclipse-3.4.1/build/jdtcoresrc/src

compile:
     [echo] TARGET: compiler
    [mkdir] Created dir: /tmp/buildd/eclipse-3.4.1/build/jdtcoresrc/compiler
    [javac] Compiling 333 source files to /tmp/buildd/eclipse-3.4.1/build/jdtcoresrc/compiler
     [echo] UPDATE ecj.jar
     [copy] Copying 34 files to /tmp/buildd/eclipse-3.4.1/build/jdtcoresrc/compiler
      [jar] Building jar: /tmp/buildd/eclipse-3.4.1/build/jdtcoresrc/ecj.jar

BUILD SUCCESSFUL
Total time: 9 seconds
Buildfile: jdtcoresrc/compilejdtcore.xml

init:

compile:
     [echo] TARGET: compiler2
    [mkdir] Created dir: /tmp/buildd/eclipse-3.4.1/build/jdtcoresrc/compiler2
     [echo] compilerArg -encoding ISO-8859-1 -nowarn
     [echo] build compiler org.eclipse.jdt.core.JDTCompilerAdapter
    [javac] Compiling 333 source files to /tmp/buildd/eclipse-3.4.1/build/jdtcoresrc/compiler2
     [echo] UPDATE ecj.jar
     [copy] Copying 34 files to /tmp/buildd/eclipse-3.4.1/build/jdtcoresrc/compiler2
      [jar] Building jar: /tmp/buildd/eclipse-3.4.1/build/ecj.jar

BUILD SUCCESSFUL
Total time: 1 minute 24 seconds
Error: JAVA_HOME is not defined correctly.
  We cannot execute /usr/lib/jvm/java-6-openjdk/bin/java

Sounds like the build specifically requires openjdk (which is good) but the build dependency in control.in isn't openjdk; it's default-jdk-builddep.

Indeed. After replacing default-jdk-builddep with openjdk-6-jdk, the package builds in both Jaunty and Sid.