How to compile rustc by hisv500 on hi3519 soc

i want to complie rust on hi3519 soc ,but it need rustc by arm-hisiv500-linux-gcc . i don not know how to complie it,who can help me ?

why don't you take arm-unknown-linux-gnueabi or a derivate, e.g. armv7-unknown-linux-gnueabi(hf) or thumbv7em-none-eabi(hf). Is there a reason you need the exact hisiv500 target?