[OE-core] [PATCH 2/2 v3] meta-skeleton: Add busybox config fragment example

[Saul Wold]

This shows an example of the config fragment support that
both the linux-yocto and busybox recipes use. This example
is specific to busybox.

By adding busybox CONFIG options into a .cfg file and then
adding that .cfg file to SRC_URI the merge_config.sh script will
correctly handle these CONFIG options during the do_configure task.
The merge_config.sh script uses a last-in wins method.

For more details about this, see the Kernel Development Manual Section 2.2.3
http://www.yoctoproject.org/docs/current/kernel-dev/kernel-dev.html#changing-the-configuration

v2: fixed FILESEXTRAPATHS
v3: Fixed kconfig line and added comments

Signed-off-by: Saul Wold <sgw at linux.intel.com>
---
 meta-skeleton/recipes-core/busybox/busybox/no_rfkill.cfg   | 1 +
 meta-skeleton/recipes-core/busybox/busybox_1.21.1.bbappend | 12 +++++
 2 files changed, 6 insertions(+)
 create mode 100644 meta-skeleton/recipes-core/busybox/busybox/no_rfkill.cfg
 create mode 100644 meta-skeleton/recipes-core/busybox/busybox_1.21.1.bbappend

diff --git a/meta-skeleton/recipes-core/busybox/busybox/no_rfkill.cfg b/meta-skeleton/recipes-core/busybox/busybox/no_rfkill.cfg
new file mode 100644
index 0000000..42c6730
--- /dev/null
+++ b/meta-skeleton/recipes-core/busybox/busybox/no_rfkill.cfg
@@ -0,0 +1 @@
+# CONFIG_RFKILL is not set
diff --git a/meta-skeleton/recipes-core/busybox/busybox_1.21.1.bbappend b/meta-skeleton/recipes-core/busybox/busybox_1.21.1.bbappend
new file mode 100644
index 0000000..641f04a4
--- /dev/null
+++ b/meta-skeleton/recipes-core/busybox/busybox_1.21.1.bbappend
@@ -0,0 +1,12 @@
+# Example use of configuration fragments for busybox, which uses the same
+# mechanism as the linux-yocto kernel recipe.
+#
+# The entries here will override any entries in the base busybox recipe
+#
+# More details can be found in the Kernel Dev Manual
+# http://www.yoctoproject.org/docs/current/kernel-dev/kernel-dev.html#changing-the-configuration
+FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"
+
+SRC_URI += " \
+	    file://no_rfkill.cfg \
+           "
-- 
1.8.1.4