diff --git a/libs/androidfw/ResourceTypes.cpp b/libs/androidfw/ResourceTypes.cpp
index f1e4858..3cf1021 100644
--- a/libs/androidfw/ResourceTypes.cpp
+++ b/libs/androidfw/ResourceTypes.cpp
@@ -3645,8 +3645,12 @@
     Entry entry;
     status_t err = getEntry(grp, t, e, &desiredConfig, &entry);
     if (err != NO_ERROR) {
+        // Only log the failure when we're not running on the host as
+        // part of a tool. The caller will do its own logging.
+#ifndef STATIC_ANDROIDFW_FOR_TOOLS
         ALOGW("Failure getting entry for 0x%08x (t=%d e=%d) (error %d)\n",
                 resID, t, e, err);
+#endif
         return err;
     }
 
diff --git a/tools/aapt/AaptConfig.cpp b/tools/aapt/AaptConfig.cpp
index f447462..848d9a1 100644
--- a/tools/aapt/AaptConfig.cpp
+++ b/tools/aapt/AaptConfig.cpp
@@ -794,4 +794,23 @@
     return a.diff(b) == axisMask;
 }
 
+bool isDensityOnly(const ResTable_config& config) {
+    if (config.density == ResTable_config::DENSITY_NONE) {
+        return false;
+    }
+
+    if (config.density == ResTable_config::DENSITY_ANY) {
+        if (config.sdkVersion != SDK_L) {
+            // Someone modified the sdkVersion from the default, this is not safe to assume.
+            return false;
+        }
+    } else if (config.sdkVersion != SDK_DONUT) {
+        return false;
+    }
+
+    const uint32_t mask = ResTable_config::CONFIG_DENSITY | ResTable_config::CONFIG_VERSION;
+    const ConfigDescription nullConfig;
+    return (nullConfig.diff(config) & ~mask) == 0;
+}
+
 } // namespace AaptConfig
diff --git a/tools/aapt/AaptConfig.h b/tools/aapt/AaptConfig.h
index 2963539..f73a5081 100644
--- a/tools/aapt/AaptConfig.h
+++ b/tools/aapt/AaptConfig.h
@@ -80,6 +80,12 @@
  */
 bool isSameExcept(const android::ResTable_config& a, const android::ResTable_config& b, int configMask);
 
+/**
+ * Returns true if the configuration only has the density specified. In the case
+ * of 'anydpi', the version is ignored.
+ */
+bool isDensityOnly(const android::ResTable_config& config);
+
 } // namespace AaptConfig
 
 #endif // __AAPT_CONFIG_H
diff --git a/tools/aapt/Resource.cpp b/tools/aapt/Resource.cpp
index b9bd03a..0d8db13 100644
--- a/tools/aapt/Resource.cpp
+++ b/tools/aapt/Resource.cpp
@@ -4,6 +4,7 @@
 // Build resource files from raw assets.
 //
 #include "AaptAssets.h"
+#include "AaptUtil.h"
 #include "AaptXml.h"
 #include "CacheUpdater.h"
 #include "CrunchCache.h"
@@ -13,9 +14,12 @@
 #include "Main.h"
 #include "ResourceTable.h"
 #include "StringPool.h"
+#include "Symbol.h"
 #include "WorkQueue.h"
 #include "XMLNode.h"
 
+#include <algorithm>
+
 #if HAVE_PRINTF_ZD
 #  define ZD "%zd"
 #  define ZD_TYPE ssize_t
@@ -1550,6 +1554,7 @@
     // Re-flatten because we may have added new resource IDs
     // --------------------------------------------------------------
 
+
     ResTable finalResTable;
     sp<AaptFile> resFile;
     
@@ -1560,6 +1565,13 @@
             return err;
         }
 
+        KeyedVector<Symbol, Vector<SymbolDefinition> > densityVaryingResources;
+        if (builder->getSplits().size() > 1) {
+            // Only look for density varying resources if we're generating
+            // splits.
+            table.getDensityVaryingResources(densityVaryingResources);
+        }
+
         Vector<sp<ApkSplit> >& splits = builder->getSplits();
         const size_t numSplits = splits.size();
         for (size_t i = 0; i < numSplits; i++) {
@@ -1583,6 +1595,63 @@
                     return err;
                 }
             } else {
+                ResTable resTable;
+                err = resTable.add(flattenedTable->getData(), flattenedTable->getSize());
+                if (err != NO_ERROR) {
+                    fprintf(stderr, "Generated resource table for split '%s' is corrupt.\n",
+                            split->getPrintableName().string());
+                    return err;
+                }
+
+                bool hasError = false;
+                const std::set<ConfigDescription>& splitConfigs = split->getConfigs();
+                for (std::set<ConfigDescription>::const_iterator iter = splitConfigs.begin();
+                        iter != splitConfigs.end();
+                        ++iter) {
+                    const ConfigDescription& config = *iter;
+                    if (AaptConfig::isDensityOnly(config)) {
+                        // Each density only split must contain all
+                        // density only resources.
+                        Res_value val;
+                        resTable.setParameters(&config);
+                        const size_t densityVaryingResourceCount = densityVaryingResources.size();
+                        for (size_t k = 0; k < densityVaryingResourceCount; k++) {
+                            const Symbol& symbol = densityVaryingResources.keyAt(k);
+                            ssize_t block = resTable.getResource(symbol.id, &val, true);
+                            if (block < 0) {
+                                // Maybe it's in the base?
+                                finalResTable.setParameters(&config);
+                                block = finalResTable.getResource(symbol.id, &val, true);
+                            }
+
+                            if (block < 0) {
+                                hasError = true;
+                                SourcePos().error("%s has no definition for density split '%s'",
+                                        symbol.toString().string(), config.toString().string());
+
+                                if (bundle->getVerbose()) {
+                                    const Vector<SymbolDefinition>& defs = densityVaryingResources[k];
+                                    const size_t defCount = std::min(size_t(5), defs.size());
+                                    for (size_t d = 0; d < defCount; d++) {
+                                        const SymbolDefinition& def = defs[d];
+                                        def.source.error("%s has definition for %s",
+                                                symbol.toString().string(), def.config.toString().string());
+                                    }
+
+                                    if (defCount < defs.size()) {
+                                        SourcePos().error("and %d more ...", (int) (defs.size() - defCount));
+                                    }
+                                }
+                            }
+                        }
+                    }
+                }
+
+                if (hasError) {
+                    return UNKNOWN_ERROR;
+                }
+
+                // Generate the AndroidManifest for this split.
                 sp<AaptFile> generatedManifest = new AaptFile(String8("AndroidManifest.xml"),
                         AaptGroupEntry(), String8());
                 err = generateAndroidManifestForSplit(bundle, assets, split,
diff --git a/tools/aapt/ResourceTable.cpp b/tools/aapt/ResourceTable.cpp
index 0f94f85..beff604 100644
--- a/tools/aapt/ResourceTable.cpp
+++ b/tools/aapt/ResourceTable.cpp
@@ -6,6 +6,7 @@
 
 #include "ResourceTable.h"
 
+#include "AaptUtil.h"
 #include "XMLNode.h"
 #include "ResourceFilter.h"
 #include "ResourceIdCache.h"
@@ -4486,3 +4487,34 @@
 
     return NO_ERROR;
 }
+
+void ResourceTable::getDensityVaryingResources(KeyedVector<Symbol, Vector<SymbolDefinition> >& resources) {
+    const ConfigDescription nullConfig;
+
+    const size_t packageCount = mOrderedPackages.size();
+    for (size_t p = 0; p < packageCount; p++) {
+        const Vector<sp<Type> >& types = mOrderedPackages[p]->getOrderedTypes();
+        const size_t typeCount = types.size();
+        for (size_t t = 0; t < typeCount; t++) {
+            const Vector<sp<ConfigList> >& configs = types[t]->getOrderedConfigs();
+            const size_t configCount = configs.size();
+            for (size_t c = 0; c < configCount; c++) {
+                const DefaultKeyedVector<ConfigDescription, sp<Entry> >& configEntries = configs[c]->getEntries();
+                const size_t configEntryCount = configEntries.size();
+                for (size_t ce = 0; ce < configEntryCount; ce++) {
+                    const ConfigDescription& config = configEntries.keyAt(ce);
+                    if (AaptConfig::isDensityOnly(config)) {
+                        // This configuration only varies with regards to density.
+                        const Symbol symbol(mOrderedPackages[p]->getName(),
+                                types[t]->getName(),
+                                configs[c]->getName(),
+                                getResId(mOrderedPackages[p], types[t], configs[c]->getEntryIndex()));
+
+                        const sp<Entry>& entry = configEntries.valueAt(ce);
+                        AaptUtil::appendValue(resources, symbol, SymbolDefinition(symbol, config, entry->getPos()));
+                    }
+                }
+            }
+        }
+    }
+}
diff --git a/tools/aapt/ResourceTable.h b/tools/aapt/ResourceTable.h
index eac5dd3..db392c89 100644
--- a/tools/aapt/ResourceTable.h
+++ b/tools/aapt/ResourceTable.h
@@ -7,15 +7,16 @@
 #ifndef RESOURCE_TABLE_H
 #define RESOURCE_TABLE_H
 
-#include "ConfigDescription.h"
-#include "StringPool.h"
-#include "SourcePos.h"
-#include "ResourceFilter.h"
-
 #include <map>
 #include <queue>
 #include <set>
 
+#include "ConfigDescription.h"
+#include "ResourceFilter.h"
+#include "SourcePos.h"
+#include "StringPool.h"
+#include "Symbol.h"
+
 using namespace std;
 
 class XMLNode;
@@ -543,6 +544,8 @@
         DefaultKeyedVector<String16, uint32_t> mKeyStringsMapping;
     };
 
+    void getDensityVaryingResources(KeyedVector<Symbol, Vector<SymbolDefinition> >& resources);
+
 private:
     void writePublicDefinitions(const String16& package, FILE* fp, bool pub);
     sp<Package> getPackage(const String16& package);
diff --git a/tools/aapt/SourcePos.cpp b/tools/aapt/SourcePos.cpp
index ae25047..3864320 100644
--- a/tools/aapt/SourcePos.cpp
+++ b/tools/aapt/SourcePos.cpp
@@ -141,6 +141,12 @@
 }
 
 bool
+SourcePos::operator<(const SourcePos& rhs) const
+{
+    return (file < rhs.file) || (line < rhs.line);
+}
+
+bool
 SourcePos::hasErrors()
 {
     return g_errors.size() > 0;
diff --git a/tools/aapt/SourcePos.h b/tools/aapt/SourcePos.h
index 4ce817f..13cfb9d 100644
--- a/tools/aapt/SourcePos.h
+++ b/tools/aapt/SourcePos.h
@@ -21,6 +21,8 @@
     void warning(const char* fmt, ...) const;
     void printf(const char* fmt, ...) const;
 
+    bool operator<(const SourcePos& rhs) const;
+
     static bool hasErrors();
     static void printErrors(FILE* to);
 };
diff --git a/tools/aapt/Symbol.h b/tools/aapt/Symbol.h
new file mode 100644
index 0000000..e157541
--- /dev/null
+++ b/tools/aapt/Symbol.h
@@ -0,0 +1,95 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef AAPT_SYMBOL_H
+#define AAPT_SYMBOL_H
+
+#include <utils/String8.h>
+#include <utils/String16.h>
+
+#include "ConfigDescription.h"
+#include "SourcePos.h"
+
+/**
+ * A resource symbol, not attached to any configuration or context.
+ */
+struct Symbol {
+    inline Symbol();
+    inline Symbol(const android::String16& p, const android::String16& t, const android::String16& n, uint32_t i);
+    inline android::String8 toString() const;
+    inline bool operator<(const Symbol& rhs) const;
+
+    android::String16 package;
+    android::String16 type;
+    android::String16 name;
+    uint32_t id;
+
+};
+
+/**
+ * A specific defintion of a symbol, defined with a configuration and a definition site.
+ */
+struct SymbolDefinition {
+    inline SymbolDefinition();
+    inline SymbolDefinition(const Symbol& s, const ConfigDescription& c, const SourcePos& src);
+    inline bool operator<(const SymbolDefinition& rhs) const;
+
+    Symbol symbol;
+    ConfigDescription config;
+    SourcePos source;
+};
+
+//
+// Implementations
+//
+
+Symbol::Symbol() {
+}
+
+Symbol::Symbol(const android::String16& p, const android::String16& t, const android::String16& n, uint32_t i)
+    : package(p)
+    , type(t)
+    , name(n)
+    , id(i) {
+}
+
+android::String8 Symbol::toString() const {
+    return android::String8::format("%s:%s/%s (0x%08x)",
+            android::String8(package).string(),
+            android::String8(type).string(),
+            android::String8(name).string(),
+            (int) id);
+}
+
+bool Symbol::operator<(const Symbol& rhs) const {
+    return (package < rhs.package) || (type < rhs.type) || (name < rhs.name) || (id < rhs.id);
+}
+
+SymbolDefinition::SymbolDefinition() {
+}
+
+SymbolDefinition::SymbolDefinition(const Symbol& s, const ConfigDescription& c, const SourcePos& src)
+    : symbol(s)
+    , config(c)
+    , source(src) {
+}
+
+bool SymbolDefinition::operator<(const SymbolDefinition& rhs) const {
+    return (symbol < rhs.symbol) || (config < rhs.config) || (source < rhs.source);
+}
+
+#endif // AAPT_SYMBOL_H
+