-

ln -nsf release.x64 build/release
  ANT tests/bench
  ANT tests/reclaim
make -r -C build/release.x64/ all
make[1]: Entering directory '/home/nona/codes/osv/build/release.x64'
build.mk:
build.mk: building arch=x64, override with ARCH env
build.mk: building build_env=host gcc_lib_env=host cxx_lib_env=host
build.mk:
  GEN gen/include/osv/version.h
  MVN java-jars
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on project cloudius: Fatal error compiling: 1.7 は無効な VM バージョンです。 -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
/home/nona/codes/osv/build.mk:373: recipe for target 'java-jars' failed
make[1]: *** [java-jars] Error 1
make[1]: Leaving directory '/home/nona/codes/osv/build/release.x64'
Makefile:25: recipe for target 'all' failed
make: *** [all] Error 2