image.bbclass: Add support to build the SDK in parallel with the image

When building an image recipe, you can now build a companion SDK by
calling the populate_sdk task:
  bitbake -c populate_sdk core-image-minimal

Note: there are still issues w/ the SDK not working completely with
multilibs.

A lock is required between rootfs and populate_sdk activities to prevent
configuration file clashes and similar package management problems in ipk
and deb based systems.  (RPM already had a lock for a different reason.)

(From OE-Core rev: a0de2a56f19ae4d8cd88e46e96917a7a019fe1ab)

Signed-off-by: Mark Hatle <mark.hatle@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/meta/classes/populate_sdk_ipk.bbclass b/meta/classes/populate_sdk_ipk.bbclass
index aa3efde20d..4321afb295 100644
--- a/meta/classes/populate_sdk_ipk.bbclass
+++ b/meta/classes/populate_sdk_ipk.bbclass
@@ -1,6 +1,8 @@
 do_populate_sdk[depends] += "opkg-native:do_populate_sysroot opkg-utils-native:do_populate_sysroot"
 do_populate_sdk[recrdeptask] += "do_package_write_ipk"
 
+do_populate_sdk[lockfiles] += "${WORKDIR}/ipk.lock"
+
 populate_sdk_ipk() {
 
         rm -f ${IPKGCONF_TARGET}