1 files changed, 13 insertions, 5 deletions

diff --git a/arch/i386/Makefile.cpu b/arch/i386/Makefile.cpu
index 86c7bb1b95e5..8e51456df23d 100644
--- a/arch/i386/Makefile.cpu
+++ b/arch/i386/Makefile.cpu
@@ -1,6 +1,14 @@
 # CPU tuning section - shared with UML.
 # Must change only cflags-y (or [yn]), not CFLAGS! That makes a difference for UML.
 
+#-mtune exists since gcc 3.4, and some -mcpu flavors didn't exist in gcc 2.95.
+HAS_MTUNE       := $(call cc-option-yn, -mtune=i386)
+ifeq ($(HAS_MTUNE),y)
+tune            = $(call cc-option,-mtune=$(1),)
+else
+tune            = $(call cc-option,-mcpu=$(1),)
+endif
+
 align := $(cc-option-align)
 cflags-$(CONFIG_M386)           += -march=i386
 cflags-$(CONFIG_M486)           += -march=i486
@@ -8,17 +16,17 @@ cflags-$(CONFIG_M586)		+= -march=i586
 cflags-$(CONFIG_M586TSC)        += -march=i586
 cflags-$(CONFIG_M586MMX)        += $(call cc-option,-march=pentium-mmx,-march=i586)
 cflags-$(CONFIG_M686)           += -march=i686
-cflags-$(CONFIG_MPENTIUMII)     += -march=i686 $(call cc-option,-mtune=pentium2)
-cflags-$(CONFIG_MPENTIUMIII)    += -march=i686 $(call cc-option,-mtune=pentium3)
-cflags-$(CONFIG_MPENTIUMM)      += -march=i686 $(call cc-option,-mtune=pentium3)
-cflags-$(CONFIG_MPENTIUM4)      += -march=i686 $(call cc-option,-mtune=pentium4)
+cflags-$(CONFIG_MPENTIUMII)     += -march=i686 $(call tune,pentium2)
+cflags-$(CONFIG_MPENTIUMIII)    += -march=i686 $(call tune,pentium3)
+cflags-$(CONFIG_MPENTIUMM)      += -march=i686 $(call tune,pentium3)
+cflags-$(CONFIG_MPENTIUM4)      += -march=i686 $(call tune,pentium4)
 cflags-$(CONFIG_MK6)            += -march=k6
 # Please note, that patches that add -march=athlon-xp and friends are pointless.
 # They make zero difference whatsosever to performance at this time.
 cflags-$(CONFIG_MK7)            += $(call cc-option,-march=athlon,-march=i686 $(align)-functions=4)
 cflags-$(CONFIG_MK8)            += $(call cc-option,-march=k8,$(call cc-option,-march=athlon,-march=i686 $(align)-functions=4))
 cflags-$(CONFIG_MCRUSOE)        += -march=i686 $(align)-functions=0 $(align)-jumps=0 $(align)-loops=0
-cflags-$(CONFIG_MEFFICEON)      += -march=i686 $(call cc-option,-mtune=pentium3) $(align)-functions=0 $(align)-jumps=0 $(align)-loops=0
+cflags-$(CONFIG_MEFFICEON)      += -march=i686 $(call tune,pentium3) $(align)-functions=0 $(align)-jumps=0 $(align)-loops=0
 cflags-$(CONFIG_MWINCHIPC6)     += $(call cc-option,-march=winchip-c6,-march=i586)
 cflags-$(CONFIG_MWINCHIP2)      += $(call cc-option,-march=winchip2,-march=i586)
 cflags-$(CONFIG_MWINCHIP3D)     += $(call cc-option,-march=winchip2,-march=i586)