bitbake: parse: Make include_all support empty variable expansions

include and require support empty variable expansions, typically used
with conditional expansions. However, include_all does not, and instead
reports an error for the first path in BBPATH.

Rewrite include_all so that its behavior matches include and require.

(Bitbake rev: 010928ceac48b20e6ab530f8e256b72201b778ec)

Signed-off-by: Peter Kjellerstedt <peter.kjellerstedt@axis.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/bitbake/lib/bb/tests/parse.py b/bitbake/lib/bb/tests/parse.py
index d3867ece98..2f77c90f60 100644
--- a/bitbake/lib/bb/tests/parse.py
+++ b/bitbake/lib/bb/tests/parse.py
@@ -499,6 +499,7 @@ EXTRA_OECONF:append = " foobar"
             test_helper("include_all some.conf", " foo bar")
             test_helper("include_all someother.conf", None)
             test_helper("include_all some3.conf", " foobar")
+            test_helper("include_all ${@''}", None)
 
             self.d.setVar("BBPATH", tempdir + "/conf2" + ":" + tempdir + "/conf1")