sh: Don't let SH-4A clobber SH-4 CFLAGS.

Older compilers don't support the -m4a{,nofpu} flags, which has the
side-effect of allowing FP operations to be emitted. Switch this to
incremental tuning, so we at least have -m4-nofpu as a fallback for
the gcc3 toolchains.

Without this, certain modules emit references to __udivsi3_i4 and
__sdivsi3_i4.

Reported-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

diff --git a/arch/sh/Makefile b/arch/sh/Makefile
index c7a8e1f0c6b649c7be41a80f09013c8573cdb8f5..77fecc62a056ebec0e776e33d2b41d437a790b66 100644 (file)
--- a/arch/sh/Makefile
+++ b/arch/sh/Makefile
@@ -35,12 +35,12 @@ endif
 endif
 
 cflags-$(CONFIG_CPU_SH2)               := $(call cc-option,-m2,)
-cflags-$(CONFIG_CPU_SH2A)              := $(call cc-option,-m2a,) \
+cflags-$(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)              := $(call cc-option,-m4a,) \
+cflags-$(CONFIG_CPU_SH4A)              += $(call cc-option,-m4a,) \
                                           $(call cc-option,-m4a-nofpu,)
 
 cflags-$(CONFIG_CPU_BIG_ENDIAN)                += -mb