bitbake: action.py: add topdir in bblayers_conf path for add-layer

By including the full path to bblayers.conf the add-layer
command can be executed from any location, not only from the
build directory.

(Bitbake rev: 77aa230bf2a053fc0941723a6abbc798ebe53a19)

Signed-off-by: Pedro Baptista <pedro.miguel.baptista@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/bblayers/action.py

@@ -11,6 +11,7 @@ import shutil
 import sys
 import tempfile
 
+from bb.cookerdata import findTopdir
 import bb.utils
 
 from bblayers.common import LayerPlugin
@@ -37,7 +38,7 @@ class ActionPlugin(LayerPlugin):
                 sys.stderr.write("Specified layer directory %s doesn't contain a conf/layer.conf file\n" % layerdir)
                 return 1
 
-        bblayers_conf = os.path.join('conf', 'bblayers.conf')
+        bblayers_conf = os.path.join(findTopdir(),'conf', 'bblayers.conf')
         if not os.path.exists(bblayers_conf):
             sys.stderr.write("Unable to find bblayers.conf\n")
             return 1