* Package:    dev-java/edtftpj-2.0.4
 * Repository: gentoo
 * Maintainer: java@gentoo.org
 * USE:        abi_x86_64 amd64 elibc_glibc kernel_linux userland_GNU
 * FEATURES:   preserve-libs sandbox userpriv usersandbox
!!! ERROR: The javac executable was not found in the Java path
 * Using: oracle-jre-bin-1.8
>>> Unpacking source...
>>> Unpacking edtftpj-2.0.4.zip to /var/tmp/portage/dev-java/edtftpj-2.0.4/work
>>> Source unpacked in /var/tmp/portage/dev-java/edtftpj-2.0.4/work
>>> Preparing source in /var/tmp/portage/dev-java/edtftpj-2.0.4/work/edtftpj-2.0.4 ...
./test/data/test.jar
./lib/junit.jar
./lib/edtftpj.jar
./examples/howto/use_binary_ascii_mode/UseTransferModes.class
./examples/howto/use_active_passive_mode/UseConnectModes.class
./examples/howto/upload_download_and_delete_a_file/UploadDownloadFiles.class
./examples/howto/transfer_using_streams/TransferUsingStreams.class
./examples/howto/set_up_logging/SetupLogging.class
./examples/howto/pause_and_resume_transfers/PauseResumeTransfers.class
./examples/howto/pause_and_resume_transfers/CancelListener.class
./examples/howto/monitor_transfers_and_commands/MonitorTransfersCommands.class
./examples/howto/monitor_transfers_and_commands/LogProgressMonitor.class
./examples/howto/monitor_transfers_and_commands/LogMessageListener.class
./examples/howto/monitor_transfers_and_commands/EventListenerImpl.class
./examples/howto/get_a_directory_listing/GetDirectoryListing.class
./examples/howto/connect_to_an_FTP_server/ConnectToServer.class
./examples/howto/change_directories/ChangeDirectory.class
>>> Source prepared.
>>> Configuring source in /var/tmp/portage/dev-java/edtftpj-2.0.4/work/edtftpj-2.0.4 ...
Rewriting attributes
Rewriting ./src/build.xml
>>> Source configured.
>>> Compiling source in /var/tmp/portage/dev-java/edtftpj-2.0.4/work/edtftpj-2.0.4 ...
 * java-pkg_ensure-dep: The ebuild is attempting to use junit, which is not declared with a SLOT in [RP]DEPEND and --build-only wasn't given.
 * Disabling all optional ANT_TASKS
Warning: Unable to determine tools.jar location.
  If build fails because sun.* classes could not be found,
  Make sure you are using a JDK, not JRE as your user/system VM.
  and that you have java-config version 2.0.30 or above installed.
Unable to locate tools.jar. Expected to find it in /opt/oracle-jre-bin-1.8.0.77/lib/tools.jar
Buildfile: /var/tmp/portage/dev-java/edtftpj-2.0.4/work/edtftpj-2.0.4/src/build.xml

init:

compile:
    [mkdir] Created dir: /var/tmp/portage/dev-java/edtftpj-2.0.4/work/edtftpj-2.0.4/build/classes

BUILD FAILED
/var/tmp/portage/dev-java/edtftpj-2.0.4/work/edtftpj-2.0.4/src/build.xml:54: Unable to find a javac compiler;
com.sun.tools.javac.Main is not on the classpath.
Perhaps JAVA_HOME does not point to the JDK.
It is currently set to "/opt/oracle-jre-bin-1.8.0.77"

Total time: 0 seconds
 * ERROR: dev-java/edtftpj-2.0.4::gentoo failed (compile phase):
 *   eant failed
 * 
 * Call stack:
 *     ebuild.sh, line  133:  Called src_compile
 *   environment, line 3957:  Called eant 'jar' '-Dftp.classpath=/usr/share/junit/lib/junit.jar'
 *   environment, line  616:  Called die
 * The specific snippet of code:
 *       ant ${antflags} "${@}" || die "eant failed"
 * 
 * If you need support, post the output of `emerge --info '=dev-java/edtftpj-2.0.4::gentoo'`,
 * the complete build log and the output of `emerge -pqv '=dev-java/edtftpj-2.0.4::gentoo'`.
!!! When you file a bug report, please include the following information:
GENTOO_VM=oracle-jre-bin-1.8  CLASSPATH="" JAVA_HOME="/opt/oracle-jre-bin-1.8.0.77"
JAVACFLAGS="-source 1.4 -target 1.4" COMPILER="javac"
and of course, the output of emerge --info =edtftpj-2.0.4
 * The complete build log is located at '/var/log/portage/dev-java:edtftpj-2.0.4:20160426-011506.log'.
 * For convenience, a symlink to the build log is located at '/var/tmp/portage/dev-java/edtftpj-2.0.4/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/dev-java/edtftpj-2.0.4/temp/environment'.
 * Working directory: '/var/tmp/portage/dev-java/edtftpj-2.0.4/work/edtftpj-2.0.4/src'
 * S: '/var/tmp/portage/dev-java/edtftpj-2.0.4/work/edtftpj-2.0.4'