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authorRamkumar Ramachandra <artagnon@gmail.com>2013-09-27 09:44:46 +0530
committerRichard Weinberger <richard@nod.at>2013-11-17 11:31:48 +0100
commite40f04d040c66d8312ecfaf6091b2da78531276c (patch)
treee6786cca4420e8d7ecdc5cc9a5b62aa7eedad684 /arch/um/Makefile
parente96d1c3695d6f5fde010d27e2a245a6656de688c (diff)
downloadlinux-e40f04d040c66d8312ecfaf6091b2da78531276c.tar.bz2
arch/um: make it work with defconfig and x86_64
arch/um/defconfig only lists one default configuration, and that applies only to the i386 architecture. Replace it with two minimal configuration files generated using `make savedefconfig`: i386_defconfig and x86_64_defconfig The build scripts now require two updates: 1. um's Kconfig (arch/x86/um/Kconfig) should specify an ARCH_DEFCONFIG section explicitly pointing to these scripts if the required variables are set. Take care to remove the DEFCONFIG_LIST section defined in the included file arch/um/Kconfig.common. 2. um's Makefile (arch/um/Makefile) should set KBUILD_DEFCONFIG properly for the top-level Makefile to pick up. Copy the logic in arch/x86/Makefile to properly pick the defconfig file depending on the actual architecture; except we're working with $SUBARCH here, instead of $ARCH. Now, you can do: $ ARCH=um make defconfig $ ARCH=um make and successfully build User-Mode Linux on an x86_64 box in default configuration. Cc: Richard Weinberger <richard@nod.at> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com> Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'arch/um/Makefile')
-rw-r--r--arch/um/Makefile11
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/um/Makefile b/arch/um/Makefile
index 133f7de2a13d..48d92bbe62e9 100644
--- a/arch/um/Makefile
+++ b/arch/um/Makefile
@@ -6,6 +6,17 @@
# Licensed under the GPL
#
+# select defconfig based on actual architecture
+ifeq ($(SUBARCH),x86)
+ ifeq ($(shell uname -m),x86_64)
+ KBUILD_DEFCONFIG := x86_64_defconfig
+ else
+ KBUILD_DEFCONFIG := i386_defconfig
+ endif
+else
+ KBUILD_DEFCONFIG := $(SUBARCH)_defconfig
+endif
+
ARCH_DIR := arch/um
OS := $(shell uname -s)
# We require bash because the vmlinux link and loader script cpp use bash