Read me for cross compile, for native compile, see README_SW64

configure:
>bash cross_swcompile_clean
this will gen release&slowdebug n&c configuration in build dir

gen ide:
>bear make CONF=sw64-slowdebug-c LOG=debug hotspot
then open compile_commands.json

make:
mount and make sure dirs are corresponds and same
modify ip/n ip/c in cross_mk to use your c or n version sw
copy a j2sdk-image-sw-n and j2sdk-image-sw-c to your build root, then
>make -f cross_mk c lvl=release
this will make hotspot for sw release and copy result to j2sdk-image-sw-c, same for n and slowdebug