meta-yocto: Move OELAYOUT_ABI definition to poky.conf

The ABI version definition should go along with the DISTRO variable
since it impact the TMPDIR definition.

Otherwise, if a user used to work with pure OE-Core, and then he/she
added meta-yocto layer, it will report ABI version incompatibility
issue. This is because ABI is changed to "8" by adding meta-yocto layer,
however the DISTRO variable is not defined and TMPDIR is still
"tmp-eglibc".

Defining the OELAYOUT_ABI variable in poky.conf could fix this issue.

This fixes [YOCTO #2303]

Signed-off-by: Dongxiao Xu <dongxiao.xu@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 7 insertions, 0 deletions

diff --git a/meta-yocto/conf/distro/poky.conf b/meta-yocto/conf/distro/poky.conf
index e4d7c1de91..e51ccdf07d 100644
--- a/meta-yocto/conf/distro/poky.conf
+++ b/meta-yocto/conf/distro/poky.conf
@@ -67,3 +67,10 @@ CONNECTIVITY_CHECK_URIS ?= "git://git.yoctoproject.org/yocto-firewall-test;proto
 
 # Default hash policy for distro
 BB_SIGNATURE_HANDLER ?= 'OEBasicHash'
+#
+# OELAYOUT_ABI allows us to notify users when the format of TMPDIR changes in 
+# an incompatible way. Such changes should usually be detailed in the commit
+# that breaks the format and have been previously discussed on the mailing list 
+# with general agreement from the core team.
+#
+OELAYOUT_ABI = "8"