openrisc: pass endianness info to sparse

openrisc is big-endian only but sparse assumes the same endianness
as the building machine.
This is problematic for code which expect __BYTE_ORDER__ being
correctly predefined by the compiler which sparse can then
pre-process differently from what gcc would, depending on the
building machine endianness.

Fix this by letting sparse know about the architecture endianness.

To: Jonas Bonn <jonas@southpole.se>
To: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
To: Stafford Horne <shorne@gmail.com>
Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
Signed-off-by: Stafford Horne <shorne@gmail.com>

diff --git a/arch/openrisc/Makefile b/arch/openrisc/Makefile
index 89076a6..cf88029 100644 (file)
--- a/arch/openrisc/Makefile
+++ b/arch/openrisc/Makefile
@@ -25,6 +25,7 @@ LDFLAGS_vmlinux :=
 LIBGCC                 := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
 
 KBUILD_CFLAGS  += -pipe -ffixed-r10 -D__linux__
+CHECKFLAGS     += -mbig-endian
 
 ifeq ($(CONFIG_OPENRISC_HAVE_INST_MUL),y)
        KBUILD_CFLAGS += $(call cc-option,-mhard-mul)