MIPS: Fix wrong CHECKFLAGS (sparse builds) with GCC 5.1

GCC 5.1 defines __REGISTER_PREFIX__ to $. This will break sparse
command line (and build fails with: /bin/sh: syntax error:
unexpected "(") since make tries to expand starting with the dollar
sign with a make variable. Prevent that by using double dollar sign.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10025/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

diff --git a/arch/mips/Makefile b/arch/mips/Makefile
index 5200f649dd4e3005423a81b4c608fc4ac49d2321..ae2dd59050f742c54c49b3f80925bbfc4e67fbbd 100644 (file)
--- a/arch/mips/Makefile
+++ b/arch/mips/Makefile
@@ -277,7 +277,7 @@ LDFLAGS                     += -m $(ld-emul)
 ifdef CONFIG_MIPS
 CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \
        egrep -vw '__GNUC_(|MINOR_|PATCHLEVEL_)_' | \
-       sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/")
+       sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/" -e 's/\$$/&&/g')
 ifdef CONFIG_64BIT
 CHECKFLAGS             += -m64
 endif