sh: Wrap CPU tuning through cc-option.

Some compilers don't support the explicit CPU tuning, while binutils
is still able to handle the special subtype-specific opcodes. Make
the CFLAG optional, falling back on the compiler default if nothing
better exists.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

diff --git a/arch/sh/Makefile b/arch/sh/Makefile
index ec2d82eda90d0ee11edb6af11d83ffcebfb3a964..aa76167ceb48bacfe629db9efd2383cb814d595a 100644 (file)
--- a/arch/sh/Makefile
+++ b/arch/sh/Makefile
@@ -34,12 +34,14 @@ isa-y                       := $(isa-y)-nofpu
 endif
 endif
 
-cflags-$(CONFIG_CPU_SH2)               := -m2
-cflags-$(CONFIG_CPU_SH2A)              := -m2a $(call cc-option,-m2a-nofpu,)
-cflags-$(CONFIG_CPU_SH3)               := -m3
-cflags-$(CONFIG_CPU_SH4)               := -m4 \
+cflags-$(CONFIG_CPU_SH2)               := $(call cc-option,-m2,)
+cflags-$(CONFIG_CPU_SH2A)              := $(call cc-option,-m2a,) \
+                                          $(call cc-option,-m2a-nofpu,)
+cflags-$(CONFIG_CPU_SH3)               := $(call cc-option,-m3,)
+cflags-$(CONFIG_CPU_SH4)               := $(call cc-option,-m4,) \
        $(call cc-option,-mno-implicit-fp,-m4-nofpu)
-cflags-$(CONFIG_CPU_SH4A)              := $(call cc-option,-m4a,) $(call cc-option,-m4a-nofpu,)
+cflags-$(CONFIG_CPU_SH4A)              := $(call cc-option,-m4a,) \
+                                          $(call cc-option,-m4a-nofpu,)
 
 cflags-$(CONFIG_CPU_BIG_ENDIAN)                += -mb
 cflags-$(CONFIG_CPU_LITTLE_ENDIAN)     += -ml