wic: accept '-' in bitbake variables

'-' is valid and common in bitbake variables (e.g. 'FOO_pn-bar'). Accept
it and other characters when reading the .env file.

Also, allow variables to be empty.

(From OE-Core rev: e688ac8e92d2bc451d8b2d437596f630bedccd2c)

(From OE-Core rev: 2a69250abf61e51f633033ddb672e8f459191899)

(From OE-Core rev: aa367a3583f6e1fb0e55f7ec46ddad13291f1c6f)

Signed-off-by: Enrico Scholz <enrico.scholz@ensc.de>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/scripts/lib/wic/utils/misc.py b/scripts/lib/wic/utils/misc.py
index 46099840ca..37e0ad6a3d 100644
--- a/scripts/lib/wic/utils/misc.py
+++ b/scripts/lib/wic/utils/misc.py
@@ -153,7 +153,7 @@ class BitbakeVars(defaultdict):
         self.default_image = None
         self.vars_dir = None
 
-    def _parse_line(self, line, image, matcher=re.compile(r"^(\w+)=(.+)")):
+    def _parse_line(self, line, image, matcher=re.compile(r"^([a-zA-Z0-9\-_+./~]+)=(.*)")):
         """
         Parse one line from bitbake -e output or from .env file.
         Put result key-value pair into the storage.