[Libreoffice] javac problem when build libreoffice on opensuse

[李明致]

i have javac in /usr/bin
but i get a problem when build libreoffice in opensuse follow thehttp://www.documentfoundation.org/develop/  on the make command:
 
checking whether to add custom build version... yes, libreoffice-build 3.2.99.2
checking whether to build with Java support... yes
checking the installed JDK... checked (JDK 1.6.0_17)
checking for target java bytecode version... 1.5
configure: error: javac not found set with_jdk_home
make: *** [stamp/build] 错误 1

how can i fix it
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