1*b2d35fa5SAnders Roxell# SUBARCH tells the usermode build what the underlying arch is. That is set 2*b2d35fa5SAnders Roxell# first, and if a usermode build is happening, the "ARCH=um" on the command 3*b2d35fa5SAnders Roxell# line overrides the setting of ARCH below. If a native build is happening, 4*b2d35fa5SAnders Roxell# then ARCH is assigned, getting whatever value it gets normally, and 5*b2d35fa5SAnders Roxell# SUBARCH is subsequently ignored. 6*b2d35fa5SAnders Roxell 7*b2d35fa5SAnders RoxellSUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \ 8*b2d35fa5SAnders Roxell -e s/sun4u/sparc64/ \ 9*b2d35fa5SAnders Roxell -e s/arm.*/arm/ -e s/sa110/arm/ \ 10*b2d35fa5SAnders Roxell -e s/s390x/s390/ -e s/parisc64/parisc/ \ 11*b2d35fa5SAnders Roxell -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \ 12*b2d35fa5SAnders Roxell -e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ \ 13*b2d35fa5SAnders Roxell -e s/riscv.*/riscv/) 14