1*4882a593Smuzhiyun# SUBARCH tells the usermode build what the underlying arch is. That is set 2*4882a593Smuzhiyun# first, and if a usermode build is happening, the "ARCH=um" on the command 3*4882a593Smuzhiyun# line overrides the setting of ARCH below. If a native build is happening, 4*4882a593Smuzhiyun# then ARCH is assigned, getting whatever value it gets normally, and 5*4882a593Smuzhiyun# SUBARCH is subsequently ignored. 6*4882a593Smuzhiyun 7*4882a593SmuzhiyunSUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \ 8*4882a593Smuzhiyun -e s/sun4u/sparc64/ \ 9*4882a593Smuzhiyun -e s/arm.*/arm/ -e s/sa110/arm/ \ 10*4882a593Smuzhiyun -e s/s390x/s390/ -e s/parisc64/parisc/ \ 11*4882a593Smuzhiyun -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \ 12*4882a593Smuzhiyun -e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ \ 13*4882a593Smuzhiyun -e s/riscv.*/riscv/) 14