bitbake: show appropriate warnings for universe target

When building the universe target:
* Show a warning about universe likely producing errors
* Multiprovider errors are now shown as warnings

Also remove an unused "error" variable in runqueue.py.

Fixes [YOCTO #1936]

(Bitbake rev: 293c796e8a3d1f74ca1e51017b6dede261612281)

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 11 insertions, 3 deletions

diff --git a/bitbake/lib/bb/cooker.py b/bitbake/lib/bb/cooker.py
index 1a9cab7dc8..f0778e5a46 100644
--- a/bitbake/lib/bb/cooker.py
+++ b/bitbake/lib/bb/cooker.py
@@ -1084,6 +1084,7 @@ class BBCooker:
         if (task == None):
             task = self.configuration.cmd
 
+        universe = ('universe' in targets)
         targets = self.checkPackages(targets)
 
         def buildTargetsIdle(server, rq, abort):
@@ -1127,6 +1128,8 @@ class BBCooker:
         taskdata.add_unresolved(localdata, self.status)
 
         rq = bb.runqueue.RunQueue(self, self.configuration.data, self.status, taskdata, runlist)
+        if universe:
+            rq.rqdata.warn_multi_bb = True
 
         self.server_registration_cb(buildTargetsIdle, rq)
 
@@ -1180,6 +1183,7 @@ class BBCooker:
                 pkgs_to_build.append(t)
 
         if 'universe' in pkgs_to_build:
+            parselog.warn("The \"universe\" target is only intended for testing and may produce errors.")
             parselog.debug(1, "collating packages for \"universe\"")
             pkgs_to_build.remove('universe')
             for t in self.status.universe_target:
diff --git a/bitbake/lib/bb/runqueue.py b/bitbake/lib/bb/runqueue.py
index 7bf432083a..c24841ffcd 100644
--- a/bitbake/lib/bb/runqueue.py
+++ b/bitbake/lib/bb/runqueue.py
@@ -187,6 +187,7 @@ class RunQueueData:
         self.taskData = taskData
         self.targets = targets
         self.rq = rq
+        self.warn_multi_bb = False
 
         self.stampwhitelist = cfgData.getVar("BB_STAMP_WHITELIST", 1) or ""
         self.multi_provider_whitelist = (cfgData.getVar("MULTI_PROVIDER_WHITELIST", 1) or "").split()
@@ -674,11 +675,14 @@ class RunQueueData:
                     prov_list[prov] = [fn]
                 elif fn not in prov_list[prov]:
                     prov_list[prov].append(fn)
-        error = False
         for prov in prov_list:
             if len(prov_list[prov]) > 1 and prov not in self.multi_provider_whitelist:
-                error = True
-                logger.error("Multiple .bb files are due to be built which each provide %s (%s).\n This usually means one provides something the other doesn't and should.", prov, " ".join(prov_list[prov]))
+                msg = "Multiple .bb files are due to be built which each provide %s (%s)." % (prov, " ".join(prov_list[prov]))
+                if self.warn_multi_bb:
+                    logger.warn(msg)
+                else:
+                    msg += "\n This usually means one provides something the other doesn't and should."
+                    logger.error(msg)
 
 
         # Create a whitelist usable by the stamp checks