1b2d35fa5SAnders Roxell# SUBARCH tells the usermode build what the underlying arch is. That is set 2b2d35fa5SAnders Roxell# first, and if a usermode build is happening, the "ARCH=um" on the command 3b2d35fa5SAnders Roxell# line overrides the setting of ARCH below. If a native build is happening, 4b2d35fa5SAnders Roxell# then ARCH is assigned, getting whatever value it gets normally, and 5b2d35fa5SAnders Roxell# SUBARCH is subsequently ignored. 6b2d35fa5SAnders Roxell 7b2d35fa5SAnders RoxellSUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \ 8b2d35fa5SAnders Roxell -e s/sun4u/sparc64/ \ 9b2d35fa5SAnders Roxell -e s/arm.*/arm/ -e s/sa110/arm/ \ 105f6e0fe0SMasahiro Yamada -e s/s390x/s390/ \ 11b2d35fa5SAnders Roxell -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \ 12b2d35fa5SAnders Roxell -e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ \ 13*fa96b57cSHuacai Chen -e s/riscv.*/riscv/ -e s/loongarch.*/loongarch/) 14