diff --git a/core/binary.mk b/core/binary.mk
index efb0db0..750e783 100644
--- a/core/binary.mk
+++ b/core/binary.mk
@@ -181,8 +181,21 @@
   my_clang := true
   my_cflags += $(ADDRESS_SANITIZER_CONFIG_EXTRA_CFLAGS)
   my_ldflags += $(ADDRESS_SANITIZER_CONFIG_EXTRA_LDFLAGS)
-  my_shared_libraries += $(ADDRESS_SANITIZER_CONFIG_EXTRA_SHARED_LIBRARIES)
-  my_static_libraries += $(ADDRESS_SANITIZER_CONFIG_EXTRA_STATIC_LIBRARIES)
+  ifdef LOCAL_IS_HOST_MODULE
+      my_ldflags += $(ADDRESS_SANITIZER_CONFIG_EXTRA_LDFLAGS_HOST)
+      my_ldlibs += $(ADDRESS_SANITIZER_CONFIG_EXTRA_LDLIBS_HOST)
+      my_shared_libraries += \
+          $(ADDRESS_SANITIZER_CONFIG_EXTRA_SHARED_LIBRARIES_HOST)
+      my_static_libraries += \
+          $(ADDRESS_SANITIZER_CONFIG_EXTRA_STATIC_LIBRARIES_HOST)
+  else
+      my_ldflags += $(ADDRESS_SANITIZER_CONFIG_EXTRA_LDFLAGS_TARGET)
+      my_ldlibs += $(ADDRESS_SANITIZER_CONFIG_EXTRA_LDLIBS_TARGET)
+      my_shared_libraries += \
+          $(ADDRESS_SANITIZER_CONFIG_EXTRA_SHARED_LIBRARIES_TARGET)
+      my_static_libraries += \
+          $(ADDRESS_SANITIZER_CONFIG_EXTRA_STATIC_LIBRARIES_TARGET)
+  endif
 endif
 
 ifeq ($(strip $($(LOCAL_2ND_ARCH_VAR_PREFIX)WITHOUT_$(my_prefix)CLANG)),true)
diff --git a/core/clang/HOST_x86_common.mk b/core/clang/HOST_x86_common.mk
index 92058e1..74b5a69 100644
--- a/core/clang/HOST_x86_common.mk
+++ b/core/clang/HOST_x86_common.mk
@@ -11,12 +11,10 @@
 ifeq ($(HOST_OS),linux)
 CLANG_CONFIG_x86_LINUX_HOST_EXTRA_ASFLAGS := \
   --gcc-toolchain=$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG) \
-  --sysroot=$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/sysroot \
-  -no-integrated-as
+  --sysroot=$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/sysroot
 
 CLANG_CONFIG_x86_LINUX_HOST_EXTRA_CFLAGS := \
-  --gcc-toolchain=$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG) \
-  -no-integrated-as
+  --gcc-toolchain=$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)
 
 ifneq ($(strip $($(clang_2nd_arch_prefix)HOST_IS_64_BIT)),)
 CLANG_CONFIG_x86_LINUX_HOST_EXTRA_CPPFLAGS := \
@@ -24,8 +22,7 @@
   --sysroot=$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/sysroot \
   -isystem $($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/x86_64-linux/include/c++/4.8 \
   -isystem $($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/x86_64-linux/include/c++/4.8/x86_64-linux \
-  -isystem $($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/x86_64-linux/include/c++/4.8/backward \
-  -no-integrated-as
+  -isystem $($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/x86_64-linux/include/c++/4.8/backward
 
 CLANG_CONFIG_x86_LINUX_HOST_EXTRA_LDFLAGS := \
   --gcc-toolchain=$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG) \
@@ -33,16 +30,14 @@
   -B$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/x86_64-linux/bin \
   -B$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/lib/gcc/x86_64-linux/4.8 \
   -L$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/lib/gcc/x86_64-linux/4.8 \
-  -L$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/x86_64-linux/lib64/ \
-  -no-integrated-as
+  -L$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/x86_64-linux/lib64/
 else
 CLANG_CONFIG_x86_LINUX_HOST_EXTRA_CPPFLAGS := \
   --gcc-toolchain=$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG) \
   --sysroot=$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/sysroot \
   -isystem $($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/x86_64-linux/include/c++/4.8 \
   -isystem $($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/x86_64-linux/include/c++/4.8/x86_64-linux/32 \
-  -isystem $($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/x86_64-linux/include/c++/4.8/backward \
-  -no-integrated-as
+  -isystem $($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/x86_64-linux/include/c++/4.8/backward
 
 CLANG_CONFIG_x86_LINUX_HOST_EXTRA_LDFLAGS := \
   --gcc-toolchain=$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG) \
@@ -50,8 +45,7 @@
   -B$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/x86_64-linux/bin \
   -B$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/lib/gcc/x86_64-linux/4.8/32 \
   -L$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/lib/gcc/x86_64-linux/4.8/32 \
-  -L$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/x86_64-linux/lib32/ \
-  -no-integrated-as
+  -L$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/x86_64-linux/lib32/
 endif
 endif  # Linux
 
diff --git a/core/clang/arm.mk b/core/clang/arm.mk
index f979409..ca66986 100644
--- a/core/clang/arm.mk
+++ b/core/clang/arm.mk
@@ -1,16 +1,12 @@
 # Clang flags for arm arch, target or host.
 
-CLANG_CONFIG_arm_EXTRA_ASFLAGS := \
-  -no-integrated-as
+CLANG_CONFIG_arm_EXTRA_ASFLAGS :=
 
-CLANG_CONFIG_arm_EXTRA_CFLAGS := \
-  -no-integrated-as
+CLANG_CONFIG_arm_EXTRA_CFLAGS :=
 
-CLANG_CONFIG_arm_EXTRA_CPPFLAGS := \
-  -no-integrated-as
+CLANG_CONFIG_arm_EXTRA_CPPFLAGS :=
 
-CLANG_CONFIG_arm_EXTRA_LDFLAGS := \
-  -no-integrated-as
+CLANG_CONFIG_arm_EXTRA_LDFLAGS :=
 
 # Include common unknown flags
 CLANG_CONFIG_arm_UNKNOWN_CFLAGS := \
diff --git a/core/clang/arm64.mk b/core/clang/arm64.mk
index 9fb3670..ab395b3 100644
--- a/core/clang/arm64.mk
+++ b/core/clang/arm64.mk
@@ -1,10 +1,8 @@
 # Clang flags for arm64 arch, target or host.
 
-CLANG_CONFIG_arm64_EXTRA_ASFLAGS := \
-  -no-integrated-as
+CLANG_CONFIG_arm64_EXTRA_ASFLAGS :=
 
-CLANG_CONFIG_arm64_EXTRA_CFLAGS := \
-  -no-integrated-as
+CLANG_CONFIG_arm64_EXTRA_CFLAGS :=
 
 CLANG_CONFIG_arm64_EXTRA_LDFLAGS :=
 
diff --git a/core/clang/config.mk b/core/clang/config.mk
index bdd18d8..54466a7 100644
--- a/core/clang/config.mk
+++ b/core/clang/config.mk
@@ -42,6 +42,11 @@
 CLANG_CONFIG_EXTRA_CFLAGS += \
   -Werror=int-conversion
 
+# Workaround for ccache with clang.
+# See http://petereisentraut.blogspot.com/2011/05/ccache-and-clang.html.
+CLANG_CONFIG_EXTRA_CFLAGS += \
+  -Wno-unused-command-line-argument
+
 CLANG_CONFIG_UNKNOWN_CFLAGS := \
   -finline-limit=64 \
   -fno-canonical-system-headers \
@@ -92,8 +97,16 @@
 # Address sanitizer clang config
 ADDRESS_SANITIZER_CONFIG_EXTRA_CFLAGS := -fsanitize=address
 ADDRESS_SANITIZER_CONFIG_EXTRA_LDFLAGS := -Wl,-u,__asan_preinit
-ADDRESS_SANITIZER_CONFIG_EXTRA_SHARED_LIBRARIES := libdl libasan_preload
-ADDRESS_SANITIZER_CONFIG_EXTRA_STATIC_LIBRARIES := libasan
+
+ADDRESS_SANITIZER_CONFIG_EXTRA_LDFLAGS_HOST := -rdynamic
+ADDRESS_SANITIZER_CONFIG_EXTRA_LDLIBS_HOST := -lpthread -ldl
+ADDRESS_SANITIZER_CONFIG_EXTRA_SHARED_LIBRARIES_HOST :=
+ADDRESS_SANITIZER_CONFIG_EXTRA_STATIC_LIBRARIES_HOST := libasan
+
+ADDRESS_SANITIZER_CONFIG_EXTRA_LDFLAGS_TARGET :=
+ADDRESS_SANITIZER_CONFIG_EXTRA_LDLIBS_TARGET :=
+ADDRESS_SANITIZER_CONFIG_EXTRA_SHARED_LIBRARIES_TARGET := libdl libasan_preload
+ADDRESS_SANITIZER_CONFIG_EXTRA_STATIC_LIBRARIES_TARGET := libasan
 
 # This allows us to use the superset of functionality that compiler-rt
 # provides to Clang (for supporting features like -ftrapv).
diff --git a/core/combo/HOST_darwin-x86.mk b/core/combo/HOST_darwin-x86.mk
index c2b80de..7ea0099 100644
--- a/core/combo/HOST_darwin-x86.mk
+++ b/core/combo/HOST_darwin-x86.mk
@@ -35,11 +35,6 @@
 $(combo_2nd_arch_prefix)HOST_TOOLCHAIN_PREFIX := $($(combo_2nd_arch_prefix)HOST_TOOLCHAIN_ROOT)/bin/i686-apple-darwin$(gcc_darwin_version)
 $(combo_2nd_arch_prefix)HOST_CC  := $($(combo_2nd_arch_prefix)HOST_TOOLCHAIN_PREFIX)-gcc
 $(combo_2nd_arch_prefix)HOST_CXX := $($(combo_2nd_arch_prefix)HOST_TOOLCHAIN_PREFIX)-g++
-ifeq ($(mac_sdk_version),10.8)
-# Mac SDK 10.8 no longer has stdarg.h, etc
-host_toolchain_header := $($(combo_2nd_arch_prefix)HOST_TOOLCHAIN_ROOT)/lib/gcc/i686-apple-darwin$(gcc_darwin_version)/4.2.1/include
-$(combo_2nd_arch_prefix)HOST_GLOBAL_CFLAGS += -isystem $(host_toolchain_header)
-endif
 
 # gcc location for clang; to be updated when clang is updated
 # HOST_TOOLCHAIN_ROOT is a Darwin-specific define
diff --git a/core/combo/HOST_darwin-x86_64.mk b/core/combo/HOST_darwin-x86_64.mk
index 1ea3310..ae06d59 100644
--- a/core/combo/HOST_darwin-x86_64.mk
+++ b/core/combo/HOST_darwin-x86_64.mk
@@ -35,11 +35,6 @@
 HOST_TOOLCHAIN_PREFIX := $(HOST_TOOLCHAIN_ROOT)/bin/i686-apple-darwin$(gcc_darwin_version)
 HOST_CC  := $(HOST_TOOLCHAIN_PREFIX)-gcc
 HOST_CXX := $(HOST_TOOLCHAIN_PREFIX)-g++
-ifeq ($(mac_sdk_version),10.8)
-# Mac SDK 10.8 no longer has stdarg.h, etc
-host_toolchain_header := $(HOST_TOOLCHAIN_ROOT)/lib/gcc/i686-apple-darwin$(gcc_darwin_version)/4.2.1/include
-HOST_GLOBAL_CFLAGS += -isystem $(host_toolchain_header)
-endif
 
 # gcc location for clang; to be updated when clang is updated
 # HOST_TOOLCHAIN_ROOT is a Darwin-specific define
diff --git a/core/combo/TARGET_linux-x86_64.mk b/core/combo/TARGET_linux-x86_64.mk
index a6fa795..f340598 100644
--- a/core/combo/TARGET_linux-x86_64.mk
+++ b/core/combo/TARGET_linux-x86_64.mk
@@ -213,8 +213,9 @@
 	$(PRIVATE_LDFLAGS) \
 	$(PRIVATE_ALL_OBJECTS) \
 	-Wl,--whole-archive \
-	$(call normalize-target-libraries,$(filter-out %libcompiler_rt.a,$(filter-out %libc_nomalloc.a,$(filter-out %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))))) \
+	$(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
 	-Wl,--no-whole-archive \
+	$(call normalize-target-libraries,$(filter-out %libcompiler_rt.a,$(filter-out %libc_nomalloc.a,$(filter-out %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))))) \
 	-Wl,--start-group \
 	$(call normalize-target-libraries,$(filter %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \
 	$(call normalize-target-libraries,$(filter %libc_nomalloc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \
diff --git a/core/combo/arch/arm/armv7-a-neon.mk b/core/combo/arch/arm/armv7-a-neon.mk
index c6603db..3f4c391 100644
--- a/core/combo/arch/arm/armv7-a-neon.mk
+++ b/core/combo/arch/arm/armv7-a-neon.mk
@@ -7,7 +7,14 @@
 ARCH_ARM_HAVE_NEON              := true
 
 ifneq (,$(filter cortex-a15 krait denver,$(TARGET_$(combo_2nd_arch_prefix)CPU_VARIANT)))
+	# TODO: krait is not a cortex-a15, we set the variant to cortex-a15 so that
+	#       hardware divide operations are generated. This should be removed and a
+	#       krait CPU variant added to GCC/clang.
 	arch_variant_cflags := -mcpu=cortex-a15
+
+	# Fake an ARM compiler flag as these processors support LPAE which GCC/clang
+	# don't advertise.
+	arch_variant_cflags += -D__ARM_FEATURE_LPAE=1
 else
 ifeq ($(strip $(TARGET_$(combo_2nd_arch_prefix)CPU_VARIANT)),cortex-a8)
 	arch_variant_cflags := -mcpu=cortex-a8
diff --git a/core/config.mk b/core/config.mk
index c030d22..6a16694 100644
--- a/core/config.mk
+++ b/core/config.mk
@@ -523,7 +523,7 @@
 DEX2OAT_TARGET_CPU_VARIANT := $(TARGET_CPU_VARIANT)
 DEX2OAT_TARGET_INSTRUCTION_SET_FEATURES := default
 ifneq (,$(filter $(DEX2OAT_TARGET_CPU_VARIANT),cortex-a7 cortex-a15 krait denver))
-  DEX2OAT_TARGET_INSTRUCTION_SET_FEATURES := div
+  DEX2OAT_TARGET_INSTRUCTION_SET_FEATURES := lpae,div
 endif
 
 ifdef TARGET_2ND_ARCH
@@ -531,7 +531,7 @@
 $(TARGET_2ND_ARCH_VAR_PREFIX)DEX2OAT_TARGET_CPU_VARIANT := $(TARGET_2ND_CPU_VARIANT)
 $(TARGET_2ND_ARCH_VAR_PREFIX)DEX2OAT_TARGET_INSTRUCTION_SET_FEATURES := default
 ifneq (,$(filter $($(TARGET_2ND_ARCH_VAR_PREFIX)DEX2OAT_TARGET_CPU_VARIANT),cortex-a7 cortex-a15 krait denver))
-  $(TARGET_2ND_ARCH_VAR_PREFIX)DEX2OAT_TARGET_INSTRUCTION_SET_FEATURES := div
+  $(TARGET_2ND_ARCH_VAR_PREFIX)DEX2OAT_TARGET_INSTRUCTION_SET_FEATURES := lpae,div
 endif
 endif
 
diff --git a/core/cxx_stl_setup.mk b/core/cxx_stl_setup.mk
index 5abdf70..c688088 100644
--- a/core/cxx_stl_setup.mk
+++ b/core/cxx_stl_setup.mk
@@ -14,7 +14,7 @@
             # Platform code. Select the appropriate STL.
             my_cxx_stl := libc++
         else
-            my_cxx_stl := bionic
+            my_cxx_stl := libstdc++
         endif
     else
         my_cxx_stl := ndk
@@ -38,18 +38,21 @@
         my_ldlibs += -lc -lm
     endif
 else ifneq ($(filter $(my_cxx_stl),stlport stlport_static),)
-    my_c_includes += external/stlport/stlport bionic/libstdc++/include bionic
-    ifeq ($(my_cxx_stl),stlport)
-        my_shared_libraries += libstdc++ libstlport
-    else
-        my_static_libraries += libstdc++ libstlport_static
+    ifndef LOCAL_IS_HOST_MODULE
+        my_c_includes += external/stlport/stlport bionic/libstdc++/include \
+                         bionic
+        ifeq ($(my_cxx_stl),stlport)
+            my_shared_libraries += libstdc++ libstlport
+        else
+            my_static_libraries += libstdc++ libstlport_static
+        endif
     endif
 else ifeq ($(my_cxx_stl),ndk)
     # Using an NDK STL. Handled farther up in this file.
     ifndef LOCAL_IS_HOST_MODULE
         my_system_shared_libraries += libstdc++
     endif
-else ifeq ($(my_cxx_stl),bionic)
+else ifeq ($(my_cxx_stl),libstdc++)
     # Using bionic's basic libstdc++. Not actually an STL. Only around until the
     # tree is in good enough shape to not need it.
     ifndef LOCAL_IS_HOST_MODULE
diff --git a/core/find-jdk-tools-jar.sh b/core/find-jdk-tools-jar.sh
index f150a9a..0224829 100755
--- a/core/find-jdk-tools-jar.sh
+++ b/core/find-jdk-tools-jar.sh
@@ -2,7 +2,13 @@
 if [ "x$ANDROID_JAVA_HOME" != x ] && [ -e "$ANDROID_JAVA_HOME/lib/tools.jar" ] ; then
     echo $ANDROID_JAVA_HOME/lib/tools.jar
 else
-    JAVAC=$(which javac)
+    JAVAC=$(realpath $(which javac) 2>/dev/null)
+    if [ -z "$JAVAC" ]; then
+        JAVAC=$(readlink -f $(which javac) 2>/dev/null)
+    fi
+    if [ -z "$JAVAC" ]; then
+        JAVAC=$(which javac)
+    fi
     if [ -z "$JAVAC" ] ; then
         exit 1
     fi
diff --git a/core/prebuilt.mk b/core/prebuilt.mk
index 33f5dc6..ba0e757 100644
--- a/core/prebuilt.mk
+++ b/core/prebuilt.mk
@@ -17,6 +17,7 @@
 my_skip_non_preferred_arch :=
 
 # check if first arch is supported
+LOCAL_2ND_ARCH_VAR_PREFIX :=
 include $(BUILD_SYSTEM)/module_arch_supported.mk
 ifeq ($(my_module_arch_supported),true)
 # first arch is supported