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