[OE-core] [PATCH 1/2] base: improve PACKAGECONFIG handling logic

[Ross Burton]

The existing code for handling PACKAGECONFIG lists wasn't the cleanest Python
around.  Instead of diving into the list directly using indices and lengths, use
pop() to iterate through the list.

Signed-off-by: Ross Burton <ross.burton at intel.com>
---
 meta/classes/base.bbclass |   23 ++++++++++++++++-------
 1 file changed, 16 insertions(+), 7 deletions(-)

diff --git a/meta/classes/base.bbclass b/meta/classes/base.bbclass
index dfa580c..37dc790 100644
--- a/meta/classes/base.bbclass
+++ b/meta/classes/base.bbclass
@@ -420,7 +420,7 @@ python () {
         def appendVar(varname, appends):
             if not appends:
                 return
-            if varname.find("DEPENDS") != -1:
+            if "DEPENDS_" in varname:
                 if pn.startswith("nativesdk-"):
                     appends = expandFilter(appends, "", "nativesdk-")
                 if pn.endswith("-native"):
@@ -442,12 +442,21 @@ python () {
                 bb.error("Only enable,disable,depend,rdepend can be specified!")
 
             if flag in pkgconfig:
-                if num >= 3 and items[2]:
-                    extradeps.append(items[2])
-                if num >= 4 and items[3]:
-                    extrardeps.append(items[3])
-                if num >= 1 and items[0]:
-                    extraconf.append(items[0])
+                if items:
+                    item = items.pop(0)
+                    if item:
+                        extraconf.append(item)
+                # Skip over disable
+                if items:
+                    items.pop(0)
+                if items:
+                    item = items.pop(0)
+                    if item:
+                        extradeps.append(item)
+                if items:
+                    item = items.pop(0)
+                    if item:
+                        extrardeps.append(item)
             elif num >= 2 and items[1]:
                     extraconf.append(items[1])
         appendVar('DEPENDS', extradeps)
-- 
1.7.10.4