README:

Simple Build Instructions:
  
  1. If you don't have a swjdk8  install it, 
     Add the /bin directory of this installation to your PATH environment variable.

  2. Configure the build:
       bash ./native_configure_sw64 release
     If you want to build debug swjdk use "bash native_configure_sw64 slowdebug".
  
  3. Build the OpenJDK:
       make all
     The resulting JDK image should be found in build/*/images/j2sdk-image.
If the build environment no git, you must do "bash version_patch.sh" on the environment has git to get the git id,
then copy the swjdk8u src to the target envirinment.
 1. bash configure  --disable-zip-debug-info --with-debug-level=release(slowdebug)
 2. make all