default "-Os -pipe -march=i486 -funit-at-a-time" if i386
default "-Os -pipe -mips32 -mtune=mips32 -funit-at-a-time" if mipsel || mips
default "-Os -pipe -mcpu=xscale -funit-at-a-time" if armeb
default "-Os -pipe -march=i486 -funit-at-a-time" if i386
default "-Os -pipe -mips32 -mtune=mips32 -funit-at-a-time" if mipsel || mips
default "-Os -pipe -mcpu=xscale -funit-at-a-time" if armeb