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-rw-r--r--arch/sh/Makefile31
1 files changed, 22 insertions, 9 deletions
diff --git a/arch/sh/Makefile b/arch/sh/Makefile
index 1f409bf81809..c43eb0d7fa3b 100644
--- a/arch/sh/Makefile
+++ b/arch/sh/Makefile
@@ -2,7 +2,7 @@
# arch/sh/Makefile
#
# Copyright (C) 1999 Kaz Kojima
-# Copyright (C) 2002, 2003, 2004 Paul Mundt
+# Copyright (C) 2002 - 2008 Paul Mundt
# Copyright (C) 2002 M. R. Brown
#
# This file is subject to the terms and conditions of the GNU General Public
@@ -18,16 +18,12 @@ isa-$(CONFIG_CPU_SH4) := sh4
isa-$(CONFIG_CPU_SH4A) := sh4a
isa-$(CONFIG_CPU_SH4AL_DSP) := sh4al
isa-$(CONFIG_CPU_SH5) := shmedia
-isa-$(CONFIG_SH_DSP) := $(isa-y)-dsp
-ifndef CONFIG_SH_DSP
-ifndef CONFIG_SH_FPU
-isa-y := $(isa-y)-nofpu
-endif
+ifeq ($(CONFIG_SUPERH32),y)
+isa-$(CONFIG_SH_DSP) := $(isa-y)-dsp
+isa-y := $(isa-y)-up
endif
-isa-y := $(isa-y)-up
-
cflags-$(CONFIG_CPU_SH2) := $(call cc-option,-m2,)
cflags-$(CONFIG_CPU_SH2A) += $(call cc-option,-m2a,) \
$(call cc-option,-m2a-nofpu,)
@@ -38,6 +34,22 @@ cflags-$(CONFIG_CPU_SH4A) += $(call cc-option,-m4a,) \
$(call cc-option,-m4a-nofpu,)
cflags-$(CONFIG_CPU_SH5) := $(call cc-option,-m5-32media-nofpu,)
+ifeq ($(cflags-y),)
+#
+# In the case where we are stuck with a compiler that has been uselessly
+# restricted to a particular ISA, a favourite default of newer GCCs when
+# extensive multilib targets are not provided, ensure we get the best fit
+# regarding FP generation. This is necessary to avoid references to FP
+# variants in libgcc where integer variants exist, which otherwise result
+# in link errors. This is intentionally stupid (albeit many orders of
+# magnitude less than GCC's default behaviour), as anything with a large
+# number of multilib targets better have been built correctly for
+# the target in mind.
+#
+cflags-y += $(shell $(CC) $(KBUILD_CFLAGS) -print-multi-lib | \
+ grep nofpu | sed q | sed -e 's/^/-/;s/;.*$$//')
+endif
+
cflags-$(CONFIG_CPU_BIG_ENDIAN) += -mb
cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -ml
@@ -65,7 +77,8 @@ OBJCOPYFLAGS := -O binary -R .note -R .note.gnu.build-id -R .comment \
-R .stab -R .stabstr -S
# Give the various platforms the opportunity to set default image types
-defaultimage-$(CONFIG_SUPERH32) := zImage
+defaultimage-$(CONFIG_SUPERH32) := zImage
+defaultimage-$(CONFIG_SH_SH7785LCR) := uImage
# Set some sensible Kbuild defaults
KBUILD_DEFCONFIG := shx3_defconfig
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