* Package:    dev-java/lz4-java-1.8.0-r1:0
 * Repository: gentoo
 * Maintainer: java@gentoo.org
 * USE:        abi_x86_64 amd64 doc elibc_glibc kernel_linux source
 * FEATURES:   ccache network-sandbox preserve-libs sandbox userpriv usersandbox
 * Using: openjdk-bin-21
 * Applying lz4-java-1.8.0-print-os-props.patch ...
 [ ok ]
 * Applying lz4-java-1.8.0-skip-ivy.patch ...
 [ ok ]
Rewriting attributes
Rewriting ./build.xml
 * 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.

BUILD FAILED
/var/tmp/portage/dev-java/lz4-java-1.8.0-r1/work/lz4-java-1.8.0/build.xml:110: Java returned: 1

Total time: 0 seconds
 * ERROR: dev-java/lz4-java-1.8.0-r1::gentoo failed (compile phase):
 *   eant failed
 * 
 * Call stack:
 *     ebuild.sh, line  136:  Called src_compile
 *   environment, line 3027:  Called java-pkg-2_src_compile
 *   environment, line 1398:  Called eant 'compile-java' 'generate-headers' 'docs' '-f' 'build.xml' '-Djava.io.tmpdir=/var/tmp/portage/dev-java/lz4-java-1.8.0-r1/temp'
 *   environment, line  562:  Called die
 * The specific snippet of code:
 *       ant ${antflags} "${@}" || die "eant failed"
 * 
 * If you need support, post the output of `emerge --info '=dev-java/lz4-java-1.8.0-r1::gentoo'`,
 * the complete build log and the output of `emerge -pqv '=dev-java/lz4-java-1.8.0-r1::gentoo'`.
!!! When you file a bug report, please include the following information:
GENTOO_VM=openjdk-bin-21  CLASSPATH="" JAVA_HOME="/opt/openjdk-bin-21.0.1_p12"
JAVACFLAGS="-source 1.8 -target 1.8" COMPILER="javac"
and of course, the output of emerge --info =lz4-java-1.8.0
 * The complete build log is located at '/var/tmp/portage/dev-java/lz4-java-1.8.0-r1/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/dev-java/lz4-java-1.8.0-r1/temp/environment'.
 * Working directory: '/var/tmp/portage/dev-java/lz4-java-1.8.0-r1/work/lz4-java-1.8.0'
 * S: '/var/tmp/portage/dev-java/lz4-java-1.8.0-r1/work/lz4-java-1.8.0'