Linux下编译openjdk1.7出现的问题，求大神帮忙解决

-internal-root_2017_11_26_17_51-b00' -Dmilestone=internal -Dbuild.number=b00 -Djavac.target=7 -Djavac.source=7 -Dboot.java.home=/NO_BOOTDIR -Dimport.jdk=/home/was/logs/openjdk/jdk -Dbuild.dir=/home/was/logs/openjdk/build/linux-amd64/langtools/build -Ddist.dir=/home/was/logs/openjdk/build/linux-amd64/langtools/dist build
Error: JAVA_HOME is not defined correctly.
We cannot execute /NO_BOOTDIR/bin/java
Makefile:201: recipe for target 'build' failed
make[2]: *** [build] Error 1
make[2]: Leaving directory '/home/was/logs/openjdk/langtools/make'
make/langtools-rules.gmk:37: recipe for target 'langtools-build' failed
make[1]: *** [langtools-build] Error 2
make[1]: Leaving directory '/home/was/logs/openjdk'
Makefile:251: recipe for target 'build_product_image' failed
make: *** [build_product_image] Error 2