xen: build fix GNU sed vs. BSD sed

Fixes the build error below:

gmake[5]: Entering directory `xen/arch/x86/boot'
gcc  -O1 -fno-omit-frame-pointer -fno-optimize-sibling-calls -m32
-march=3Di686 -g -fno-strict-aliasing -std=3Dgnu99 -Wall
-Wstrict-prototypes
-Wno-unused-value -Wdeclaration-after-statement  -fno-stack-protector
-Werror -fno-builtin -msoft-float -c reloc.c -o reloc.o
ld -melf_i386 -N -Ttext  -o reloc.lnk reloc.o
ld: invalid hex number `-o'

BSD sed does not support the '+' in the basic re while gnu sed does.
BSD sed supports '+' in the extended re and uses the -E flag while
gnu sed uses -r.

The only difference with the original version is that the '+'
qualifier is replaced with '\{1\,\}' which should work with both BSD
sed and GNU sed.

Signed-off-by: Christoph Egger <Christoph.Egger@amd.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>

diff --git a/xen/arch/x86/boot/Makefile b/xen/arch/x86/boot/Makefile
index 630b19d027d8ce5d968c491a7c28d8d63fd6af0a..c90b8195558594cac185b31325d955aea7b63102 100644 (file)
--- a/xen/arch/x86/boot/Makefile
+++ b/xen/arch/x86/boot/Makefile
@@ -2,7 +2,7 @@ obj-y += head.o
 
 head.o: reloc.S
 
-BOOT_TRAMPOLINE := $(shell sed -n 's,^\#define[[:space:]]\+BOOT_TRAMPOLINE[[:space:]]\+,,p' $(BASEDIR)/include/asm-x86/config.h)
+BOOT_TRAMPOLINE := $(shell sed -n 's,^\#define[[:space:]]\{1\,\}BOOT_TRAMPOLINE[[:space:]]\{1\,\},,p' $(BASEDIR)/include/asm-x86/config.h)
 %.S: %.c
        RELOC=$(BOOT_TRAMPOLINE) XEN_BITSPERLONG=$(patsubst x86_%,%,$(TARGET_SUBARCH)) $(MAKE) -f build32.mk $@