blacklist.bbclass: Avoid blacklist specific handle in base.bbclass

base.bbclass had code which handled the PNBLACKLIST in case of
multilib use. This is better to be done in the blacklist.bbclass so it
has all logic in a single place.

(From OE-Core rev: 04f0fefeccc1e7e3af8a1f741350492ae3f171fc)

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/classes/blacklist.bbclass

@@ -12,6 +12,31 @@
 #   PNBLACKLIST[pn] = "message"
 #
 
+# Cope with PNBLACKLIST flags for multilib case
+addhandler blacklist_multilib_eventhandler
+blacklist_multilib_eventhandler[eventmask] = "bb.event.ConfigParsed"
+python blacklist_multilib_eventhandler() {
+    multilibs = e.data.getVar('MULTILIBS', True)
+    if not multilibs:
+        return
+
+    # this block has been copied from base.bbclass so keep it in sync
+    prefixes = []
+    for ext in multilibs.split():
+        eext = ext.split(':')
+        if len(eext) > 1 and eext[0] == 'multilib':
+            prefixes.append(eext[1])
+
+    blacklists = e.data.getVarFlags('PNBLACKLIST') or {}
+    for pkg, reason in blacklists.items():
+        if pkg.endswith(("-native", "-crosssdk")) or pkg.startswith(("nativesdk-", "virtual/nativesdk-")) or 'cross-canadian' in pkg:
+            continue
+        for p in prefixes:
+            newpkg = p + "-" + pkg
+            if not e.data.getVarFlag('PNBLACKLIST', newpkg, True):
+                e.data.setVarFlag('PNBLACKLIST', newpkg, reason)
+}
+
 python () {
     blacklist = d.getVarFlag('PNBLACKLIST', d.getVar('PN', True), True)