[PATCH] uml: tidy biarch gcc support
On top of the previous biarch changes for UML, this makes the preprocessor
changes a bit cleaner. Specify the 64-bit build in CPPFLAGS on the x86_64
SUBARCH, rather than #undef'ing i386. Compile-tested with i386 and x86_64
SUBARCHs.
Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/arch/um/Makefile-x86_64 b/arch/um/Makefile-x86_64
index dffd118..9558a7c 100644
--- a/arch/um/Makefile-x86_64
+++ b/arch/um/Makefile-x86_64
@@ -11,6 +11,7 @@
CHECKFLAGS += -m64
AFLAGS += -m64
LDFLAGS += -m elf_x86_64
+CPPFLAGS += -m64
ELF_ARCH := i386:x86-64
ELF_FORMAT := elf64-x86-64
diff --git a/arch/um/kernel/vmlinux.lds.S b/arch/um/kernel/vmlinux.lds.S
index 72acdce..f8aeb44 100644
--- a/arch/um/kernel/vmlinux.lds.S
+++ b/arch/um/kernel/vmlinux.lds.S
@@ -1,5 +1,3 @@
-/* in case the preprocessor is a 32bit one */
-#undef i386
#ifdef CONFIG_LD_SCRIPT_STATIC
#include "uml.lds.S"
#else
