bblayers.conf.sample: Use ?= to set BBLAYERS

Hob may dynamically sets BBLAYERS to bitbake server, thus we need a
flexible way to load BBLAYERS value.

(From OE-Core rev: 458d0f8b39e7d9dce544f53c65e2a6ffae21ad24)

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

diff --git a/meta-yocto/conf/bblayers.conf.sample b/meta-yocto/conf/bblayers.conf.sample
index 2df038c7dade012a3153b64f6c1705959f814ae7..78977503206db2e98fa775b27b2a00e6eb359c0a 100644 (file)
--- a/meta-yocto/conf/bblayers.conf.sample
+++ b/meta-yocto/conf/bblayers.conf.sample
@@ -3,7 +3,7 @@
 LCONF_VERSION = "4"
 
 BBFILES ?= ""
-BBLAYERS = " \
+BBLAYERS ?= " \
   ##COREBASE##/meta \
   ##COREBASE##/meta-yocto \
   "