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Subject[PATCH] x86: introduce ARCH=i386,ARCH=x86_64 to select 32/64 bit
Date
Using the newly added infrastructure is is now simple
to add addition ARCH= symbols to select between 32 and 64 bit.
Do this for x86.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
---
Makefile | 16 +++++++++++++---
arch/x86/Makefile | 10 +++++++---
scripts/kconfig/Makefile | 2 +-
3 files changed, 21 insertions(+), 7 deletions(-)
diff --git a/Makefile b/Makefile
index 902082b..5efee80 100644
--- a/Makefile
+++ b/Makefile
@@ -165,8 +165,7 @@ export srctree objtree VPATH TOPDIR
# then ARCH is assigned, getting whatever value it gets normally, and
# SUBARCH is subsequently ignored.

-SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \
- -e s/sun4u/sparc64/ \
+SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \
-e s/arm.*/arm/ -e s/sa110/arm/ \
-e s/s390x/s390/ -e s/parisc64/parisc/ \
-e s/ppc.*/powerpc/ -e s/mips.*/mips/ \
@@ -198,8 +197,19 @@ CROSS_COMPILE ?=
UTS_MACHINE := $(ARCH)
SRCARCH := $(ARCH)

+ifeq ($(ARCH),i386)
+ K64BIT := n
+ SRCARCH := x86
+endif
+ifeq ($(ARCH),x86_64)
+ K64BIT := y
+ SRCARCH := x86
+endif
+export K64BIT
+
+
# Sanity check the specified ARCH
-ifeq ($(wildcard $(srctree)/arch/$(ARCH)/Kconfig),)
+ifeq ($(wildcard $(srctree)/arch/$(SRCARCH)/Kconfig),)
$(error "ERROR: ARCH ($(ARCH)) does not exist (for i386 and x86_64 use ARCH=x86)")
endif

diff --git a/arch/x86/Makefile b/arch/x86/Makefile
index ee94224..feba761 100644
--- a/arch/x86/Makefile
+++ b/arch/x86/Makefile
@@ -1,9 +1,13 @@
# Unified Makefile for i386 and x86_64

# select i386 defconfig file as default config
-KBUILD_DEFCONFIG := i386_defconfig
-
-# # No need to remake these files
+ifeq ($(ARCH),x86)
+ KBUILD_DEFCONFIG := i386_defconfig
+else
+ KBUILD_DEFCONFIG := $(ARCH)_defconfig
+endif
+
+# No need to remake these files
$(srctree)/arch/x86/Makefile%: ;

ifeq ($(CONFIG_X86_32),y)
diff --git a/scripts/kconfig/Makefile b/scripts/kconfig/Makefile
index 3c9db07..1ad6f7f 100644
--- a/scripts/kconfig/Makefile
+++ b/scripts/kconfig/Makefile
@@ -4,7 +4,7 @@

PHONY += oldconfig xconfig gconfig menuconfig config silentoldconfig update-po-config

-Kconfig := arch/$(ARCH)/Kconfig
+Kconfig := arch/$(SRCARCH)/Kconfig

xconfig: $(obj)/qconf
$< $(Kconfig)
--
1.5.3.4.1157.g0e74-dirty
-
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