1# ========================================================================== 2# Build system 3# ========================================================================== 4 5# Allow i486 insns (basically, bswap insn) 6# Do not try to tune for 486+ (might add padding) 7CFLAGS += $(call cc-option,-march=i486 -mtune=i386,) 8 9ifeq ($(CONFIG_STACK_OPTIMIZATION_386),y) 10# -mpreferred-stack-boundary=2 is essential in preventing gcc 4.2.x 11# from aligning stack to 16 bytes. (Which is gcc's way of supporting SSE). 12CFLAGS += $(call cc-option,-mpreferred-stack-boundary=2,) 13endif 14