* [Buildroot] [RFC] [PATCH] Add support for external kernel source directory
@ 2011-02-08 21:25 Martin Hicks
0 siblings, 0 replies; only message in thread
From: Martin Hicks @ 2011-02-08 21:25 UTC (permalink / raw
To: buildroot
Hi,
I wanted to compile a kernel from an external git tree, so adding
support for using this tree as the kernel source for buildroot
seemed logical.
The thing I'm seeking comments on is my short-circuiting of
the .stamp_{downloaded,extraced,patched} bits. Can someone
suggest a more elegant way of doing this?
..I removed patching support, since you should probably be using
some other tool to manage patches in the external tree anyways.
Comments appreciated:
Useful for those of us who develop against an external git tree.
Signed-off-by: Martin Hicks <mort@bork.org>
---
linux/Config.in | 13 +++++++++++++
linux/linux.mk | 6 ++++++
2 files changed, 19 insertions(+), 0 deletions(-)
diff --git a/linux/Config.in b/linux/Config.in
index 17aa29a..2913e7c 100644
--- a/linux/Config.in
+++ b/linux/Config.in
@@ -16,6 +16,7 @@ if BR2_LINUX_KERNEL
# version as the kernel headers
# 3. A custom stable version
# 4. A custom tarball
+# 5. An external tree
#
choice
prompt "Kernel version"
@@ -47,6 +48,12 @@ config BR2_LINUX_KERNEL_CUSTOM_TARBALL
This option allows to specify the http or ftp location of a
specific kernel source tarball
+config BR2_LINUX_KERNEL_CUSTOM_DIRECTORY
+ bool "Custom directory"
+ help
+ This option allows to specify an external directory that
+ contains an expanded kernel source tree
+
endchoice
config BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE
@@ -58,12 +65,17 @@ config BR2_LINUX_KERNEL_CUSTOM_TARBALL_LOCATION
string "URL of custom kernel tarball"
depends on BR2_LINUX_KERNEL_CUSTOM_TARBALL
+config BR2_LINUX_KERNEL_CUSTOM_DIRECTORY_LOCATION
+ string "Path of custom kernel source directory"
+ depends on BR2_LINUX_KERNEL_CUSTOM_DIRECTORY
+
config BR2_LINUX_KERNEL_VERSION
string
default "2.6.37" if BR2_LINUX_KERNEL_2_6_37
default BR2_DEFAULT_KERNEL_HEADERS if BR2_LINUX_KERNEL_SAME_AS_HEADERS
default BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE if BR2_LINUX_KERNEL_CUSTOM_VERSION
default "custom" if BR2_LINUX_KERNEL_CUSTOM_TARBALL
+ default "custom" if BR2_LINUX_KERNEL_CUSTOM_DIRECTORY
#
# Patch selection
@@ -71,6 +83,7 @@ config BR2_LINUX_KERNEL_VERSION
config BR2_LINUX_KERNEL_PATCH
string "Custom kernel patches"
+ depends on !BR2_LINUX_KERNEL_CUSTOM_DIRECTORY
help
A space-separated list of patches to apply to the
kernel. Each patch can be described as an URL, a local file
diff --git a/linux/linux.mk b/linux/linux.mk
index 2bc2efe..e38ba9c 100644
--- a/linux/linux.mk
+++ b/linux/linux.mk
@@ -18,6 +18,12 @@ endif
LINUX26_DIR:=$(BUILD_DIR)/linux-$(LINUX26_VERSION)
LINUX26_PATCH=$(call qstrip,$(BR2_LINUX_KERNEL_PATCH))
+# The directory gets overridden if custom directory is selected
+ifeq ($(BR2_LINUX_KERNEL_CUSTOM_DIRECTORY),y)
+LINUX26_DIR=$(call qstrip,$(BR2_LINUX_KERNEL_CUSTOM_DIRECTORY_LOCATION))
+$(shell touch $(LINUX26_DIR)/.stamp_downloaded $(LINUX26_DIR)/.stamp_extracted $(LINUX26_DIR)/.stamp_patched)
+endif
+
LINUX26_MAKE_FLAGS = \
HOSTCC="$(HOSTCC)" \
HOSTCFLAGS="$(HOSTCFLAGS)" \
--
1.5.6.5
--
Martin Hicks P.Eng. | mort at bork.org
Bork Consulting Inc. | +1 (613) 266-2296
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2011-02-08 21:25 [Buildroot] [RFC] [PATCH] Add support for external kernel source directory Martin Hicks
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