utils.bbclass: make FILESEXTRAPATHS colon delimited

Fixes [YOCTO 1102]

Path variables are typically : delimited. White space is allowed in paths, so
is not a good choice for separating paths. Currently utils.bbclass performs the
following:

    extrapaths = (bb.data.getVar("FILESEXTRAPATHS", d, True) or "").split()

This splits FILESEXTRAPATHS on whitespace. It later splits overrides on : and
reassembles them all together as : delimited.

There is only one user of FILESEXTRAPATHS in oe-core (qt4-tools-native, which
uses : anyway) and none in oe.

Change the split() in utils.bbclass to split on : instead of whitespace. When
splitting on a defined string (":") we must be careful to handle the empty
string case which returns [''] instead of [].

Tested building qt4-tools-native and core-image-minimal for surgarbay from
meta-intel with a couple extra layers with FILESEXTRAPATHS modifications added.

(From OE-Core rev: a6a892f520d22ef8020c98528d38ee08f6cda034)

Signed-off-by: Darren Hart <dvhart@linux.intel.com>
Cc: Phil Blundell <pb@pbcl.net>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 4 insertions, 2 deletions

diff --git a/meta/classes/utils.bbclass b/meta/classes/utils.bbclass
index e103351e34..9930a24269 100644
--- a/meta/classes/utils.bbclass
+++ b/meta/classes/utils.bbclass
@@ -331,8 +331,10 @@ def explode_deps(s):
 
 def base_set_filespath(path, d):
         filespath = []
-        extrapaths = (bb.data.getVar("FILESEXTRAPATHS", d, True) or "").split()
-        path = extrapaths + path
+        extrapaths = (bb.data.getVar("FILESEXTRAPATHS", d, True) or "")
+        # Don't prepend empty strings to the path list
+        if extrapaths != "":
+                path = extrapaths.split(":") + path
         # The ":" ensures we have an 'empty' override
         overrides = (bb.data.getVar("OVERRIDES", d, 1) or "") + ":"
         for p in path: