diff --git a/debuggerd/Android.soong.mk b/debuggerd/Android.mk
similarity index 100%
rename from debuggerd/Android.soong.mk
rename to debuggerd/Android.mk
diff --git a/libbacktrace/Android.bp b/libbacktrace/Android.bp
new file mode 100644
index 0000000..93d997b
--- /dev/null
+++ b/libbacktrace/Android.bp
@@ -0,0 +1,121 @@
+//
+// 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.
+//
+
+cc_defaults {
+    name: "libbacktrace_common",
+
+    cflags: [
+        "-Wall",
+        "-Werror",
+    ],
+    conlyflags: ["-std=gnu99"],
+    cppflags: ["-std=gnu++11"],
+
+    clang_cflags: ["-Wno-inline-asm"],
+
+    // The latest clang (r230699) does not allow SP/PC to be declared in inline asm lists.
+    include_dirs: ["external/libunwind/include/tdep"],
+
+    // TODO: LLVM_DEVICE_BUILD_MK
+    // TODO: LLVM_HOST_BUILD_MK
+
+    target: {
+        host: {
+            // -fno-omit-frame-pointer should be set for host build. Because currently
+            // libunwind can't recognize .debug_frame using dwarf version 4, and it relies
+            // on stack frame pointer to do unwinding on x86.
+            // $(LLVM_HOST_BUILD_MK) overwrites -fno-omit-frame-pointer. so the below line
+            // must be after the include.
+            cflags: [
+                "-Wno-extern-c-compat",
+                "-fno-omit-frame-pointer",
+            ],
+        },
+
+        darwin: {
+            enabled: false,
+        },
+    },
+
+    multilib: {
+        lib32: {
+            suffix: "32",
+        },
+        lib64: {
+            suffix: "64",
+        },
+    }
+}
+
+libbacktrace_sources = [
+    "Backtrace.cpp",
+    "BacktraceCurrent.cpp",
+    "BacktracePtrace.cpp",
+    "thread_utils.c",
+    "ThreadEntry.cpp",
+    "UnwindCurrent.cpp",
+    "UnwindMap.cpp",
+    "UnwindPtrace.cpp",
+]
+
+cc_library {
+    name: "libbacktrace",
+    defaults: ["libbacktrace_common"],
+    host_supported: true,
+
+    srcs: [
+        "BacktraceMap.cpp",
+    ],
+
+    target: {
+        darwin: {
+            enabled: true,
+        },
+        linux: {
+            srcs: libbacktrace_sources,
+
+            shared_libs: [
+                "libbase",
+                "liblog",
+                "libunwind",
+            ],
+
+            static_libs: ["libcutils"],
+        },
+        android: {
+            srcs: libbacktrace_sources,
+
+            shared_libs: [
+                "libbase",
+                "liblog",
+                "libunwind",
+            ],
+
+            static_libs: ["libcutils"],
+        },
+    },
+}
+
+cc_library_shared {
+    name: "libbacktrace_test",
+    defaults: ["libbacktrace_common"],
+    host_supported: true,
+    strip: {
+        none: true,
+    },
+    cflags: ["-O0"],
+    srcs: ["backtrace_testlib.c"],
+}
diff --git a/libbacktrace/Android.mk b/libbacktrace/Android.mk
index 356ab8b..9bb113a 100644
--- a/libbacktrace/Android.mk
+++ b/libbacktrace/Android.mk
@@ -44,53 +44,6 @@
 include $(LLVM_ROOT_PATH)/llvm.mk
 
 #-------------------------------------------------------------------------
-# The libbacktrace library.
-#-------------------------------------------------------------------------
-libbacktrace_src_files := \
-	Backtrace.cpp \
-	BacktraceCurrent.cpp \
-	BacktraceMap.cpp \
-	BacktracePtrace.cpp \
-	thread_utils.c \
-	ThreadEntry.cpp \
-	UnwindCurrent.cpp \
-	UnwindMap.cpp \
-	UnwindPtrace.cpp \
-
-libbacktrace_shared_libraries := \
-	libbase \
-	liblog \
-	libunwind \
-
-libbacktrace_static_libraries := \
-	libcutils
-
-module := libbacktrace
-module_tag := optional
-build_type := target
-build_target := SHARED_LIBRARY
-include $(LOCAL_PATH)/Android.build.mk
-build_type := host
-libbacktrace_multilib := both
-include $(LOCAL_PATH)/Android.build.mk
-
-libbacktrace_shared_libraries :=
-
-libbacktrace_static_libraries := \
-	libbase \
-	liblog \
-	libunwind \
-	liblzma \
-
-module := libbacktrace
-build_type := target
-build_target := STATIC_LIBRARY
-include $(LOCAL_PATH)/Android.build.mk
-build_type := host
-libbacktrace_multilib := both
-include $(LOCAL_PATH)/Android.build.mk
-
-#-------------------------------------------------------------------------
 # The libbacktrace_offline shared library.
 #-------------------------------------------------------------------------
 libbacktrace_offline_src_files := \
@@ -135,26 +88,6 @@
 include $(LOCAL_PATH)/Android.build.mk
 
 #-------------------------------------------------------------------------
-# The libbacktrace_test library needed by backtrace_test.
-#-------------------------------------------------------------------------
-libbacktrace_test_cflags := \
-	-O0 \
-
-libbacktrace_test_src_files := \
-	backtrace_testlib.c \
-
-libbacktrace_test_strip_module := false
-
-module := libbacktrace_test
-module_tag := debug
-build_type := target
-build_target := SHARED_LIBRARY
-libbacktrace_test_multilib := both
-include $(LOCAL_PATH)/Android.build.mk
-build_type := host
-include $(LOCAL_PATH)/Android.build.mk
-
-#-------------------------------------------------------------------------
 # The backtrace_test executable.
 #-------------------------------------------------------------------------
 backtrace_test_cflags := \
@@ -219,22 +152,3 @@
 include $(LOCAL_PATH)/Android.build.mk
 build_type := host
 include $(LOCAL_PATH)/Android.build.mk
-
-#----------------------------------------------------------------------------
-# Special truncated libbacktrace library for mac.
-#----------------------------------------------------------------------------
-ifeq ($(HOST_OS),darwin)
-
-include $(CLEAR_VARS)
-
-LOCAL_MODULE := libbacktrace
-LOCAL_MODULE_TAGS := optional
-
-LOCAL_SRC_FILES := \
-	BacktraceMap.cpp \
-
-LOCAL_MULTILIB := both
-
-include $(BUILD_HOST_SHARED_LIBRARY)
-
-endif # HOST_OS-darwin
diff --git a/libcutils/Android.bp b/libcutils/Android.bp
new file mode 100644
index 0000000..4f26034
--- /dev/null
+++ b/libcutils/Android.bp
@@ -0,0 +1,155 @@
+//
+// Copyright (C) 2008 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.
+//
+
+// some files must not be compiled when building against Mingw
+// they correspond to features not used by our host development tools
+// which are also hard or even impossible to port to native Win32
+libcutils_nonwindows_sources = [
+    "fs.c",
+    "multiuser.c",
+    "socket_inaddr_any_server_unix.c",
+    "socket_local_client_unix.c",
+    "socket_local_server_unix.c",
+    "socket_loopback_client_unix.c",
+    "socket_loopback_server_unix.c",
+    "socket_network_client_unix.c",
+    "sockets_unix.cpp",
+    "str_parms.c",
+]
+
+cc_library {
+    name: "libcutils",
+    host_supported: true,
+    srcs: [
+        "config_utils.c",
+        "fs_config.c",
+        "canned_fs_config.c",
+        "hashmap.c",
+        "iosched_policy.c",
+        "load_file.c",
+        "native_handle.c",
+        "open_memstream.c",
+        "process_name.c",
+        "record_stream.c",
+        "sched_policy.c",
+        "sockets.cpp",
+        "strdup16to8.c",
+        "strdup8to16.c",
+        "strlcpy.c",
+        "threads.c",
+    ],
+
+    target: {
+        host: {
+            srcs: ["dlmalloc_stubs.c"],
+        },
+        not_windows: {
+            srcs: libcutils_nonwindows_sources + [
+                "ashmem-host.c",
+                "trace-host.c",
+            ],
+        },
+        windows: {
+            srcs: [
+                "socket_inaddr_any_server_windows.c",
+                "socket_network_client_windows.c",
+                "sockets_windows.cpp",
+            ],
+
+            enabled: true,
+            shared: {
+                enabled: false,
+            },
+        },
+
+        android: {
+            srcs: libcutils_nonwindows_sources + [
+                "android_reboot.c",
+                "ashmem-dev.c",
+                "debugger.c",
+                "klog.cpp",
+                "partition_utils.c",
+                "properties.c",
+                "qtaguid.c",
+                "trace-dev.c",
+                "uevent.c",
+            ],
+
+            // TODO: remove liblog as whole static library, once we don't have prebuilt that requires
+            // liblog symbols present in libcutils.
+            whole_static_libs: [
+                "liblog",
+            ],
+
+            static_libs: ["libdebuggerd_client"],
+            export_static_lib_headers: ["libdebuggerd_client"],
+
+            cflags: [
+                "-std=gnu90",
+            ],
+        },
+
+        android_arm: {
+            srcs: ["arch-arm/memset32.S"],
+        },
+        android_arm64: {
+            srcs: ["arch-arm64/android_memset.S"],
+        },
+
+        android_mips: {
+            srcs: ["arch-mips/android_memset.c"],
+        },
+        android_mips64: {
+            srcs: ["arch-mips/android_memset.c"],
+        },
+
+        android_x86: {
+            srcs: [
+                "arch-x86/android_memset16.S",
+                "arch-x86/android_memset32.S",
+            ],
+        },
+
+        android_x86_64: {
+            srcs: [
+                "arch-x86_64/android_memset16.S",
+                "arch-x86_64/android_memset32.S",
+            ],
+        },
+    },
+
+    shared_libs: ["liblog"],
+    product_variables: {
+        cpusets: {
+            cflags: ["-DUSE_CPUSETS"],
+        },
+        schedboost: {
+            cflags: ["-DUSE_SCHEDBOOST"],
+        },
+    },
+    cflags: [
+        "-Werror",
+        "-Wall",
+        "-Wextra",
+    ],
+
+    clang: true,
+    sanitize: {
+        misc_undefined: ["integer"],
+    },
+}
+
+subdirs = ["tests"]
diff --git a/libcutils/Android.mk b/libcutils/Android.mk
deleted file mode 100644
index c830182..0000000
--- a/libcutils/Android.mk
+++ /dev/null
@@ -1,153 +0,0 @@
-#
-# Copyright (C) 2008 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.
-#
-LOCAL_PATH := $(my-dir)
-include $(CLEAR_VARS)
-
-libcutils_common_sources := \
-        config_utils.c \
-        fs_config.c \
-        canned_fs_config.c \
-        hashmap.c \
-        iosched_policy.c \
-        load_file.c \
-        native_handle.c \
-        open_memstream.c \
-        process_name.c \
-        record_stream.c \
-        sched_policy.c \
-        sockets.cpp \
-        strdup16to8.c \
-        strdup8to16.c \
-        strlcpy.c \
-        threads.c \
-
-# some files must not be compiled when building against Mingw
-# they correspond to features not used by our host development tools
-# which are also hard or even impossible to port to native Win32
-libcutils_nonwindows_sources := \
-        fs.c \
-        multiuser.c \
-        socket_inaddr_any_server_unix.c \
-        socket_local_client_unix.c \
-        socket_local_server_unix.c \
-        socket_loopback_client_unix.c \
-        socket_loopback_server_unix.c \
-        socket_network_client_unix.c \
-        sockets_unix.cpp \
-        str_parms.c \
-
-libcutils_nonwindows_host_sources := \
-        ashmem-host.c \
-        trace-host.c \
-
-libcutils_windows_host_sources := \
-        socket_inaddr_any_server_windows.c \
-        socket_network_client_windows.c \
-        sockets_windows.cpp \
-
-# Shared and static library for host
-# Note: when linking this library on Windows, you must also link to Winsock2
-# using "LOCAL_LDLIBS_windows := -lws2_32".
-# ========================================================
-LOCAL_MODULE := libcutils
-LOCAL_SRC_FILES := $(libcutils_common_sources) dlmalloc_stubs.c
-LOCAL_SRC_FILES_darwin := $(libcutils_nonwindows_sources) $(libcutils_nonwindows_host_sources)
-LOCAL_SRC_FILES_linux := $(libcutils_nonwindows_sources) $(libcutils_nonwindows_host_sources)
-LOCAL_SRC_FILES_windows := $(libcutils_windows_host_sources)
-LOCAL_STATIC_LIBRARIES := liblog
-LOCAL_CFLAGS := -Werror -Wall -Wextra
-LOCAL_MULTILIB := both
-LOCAL_MODULE_HOST_OS := darwin linux windows
-include $(BUILD_HOST_STATIC_LIBRARY)
-
-include $(CLEAR_VARS)
-LOCAL_MODULE := libcutils
-LOCAL_SRC_FILES := $(libcutils_common_sources) dlmalloc_stubs.c
-LOCAL_SRC_FILES_darwin := $(libcutils_nonwindows_sources) $(libcutils_nonwindows_host_sources)
-LOCAL_SRC_FILES_linux := $(libcutils_nonwindows_sources) $(libcutils_nonwindows_host_sources)
-LOCAL_SHARED_LIBRARIES := liblog
-LOCAL_CFLAGS := -Werror -Wall -Wextra
-LOCAL_MULTILIB := both
-include $(BUILD_HOST_SHARED_LIBRARY)
-
-
-
-# Shared and static library for target
-# ========================================================
-
-include $(CLEAR_VARS)
-LOCAL_MODULE := libcutils
-LOCAL_SRC_FILES := $(libcutils_common_sources) \
-        $(libcutils_nonwindows_sources) \
-        android_reboot.c \
-        ashmem-dev.c \
-        debugger.c \
-        klog.cpp \
-        partition_utils.c \
-        properties.c \
-        qtaguid.c \
-        trace-dev.c \
-        uevent.c \
-
-LOCAL_SRC_FILES_arm += arch-arm/memset32.S
-LOCAL_SRC_FILES_arm64 += arch-arm64/android_memset.S
-
-LOCAL_SRC_FILES_mips += arch-mips/android_memset.c
-LOCAL_SRC_FILES_mips64 += arch-mips/android_memset.c
-
-LOCAL_SRC_FILES_x86 += \
-        arch-x86/android_memset16.S \
-        arch-x86/android_memset32.S \
-
-LOCAL_SRC_FILES_x86_64 += \
-        arch-x86_64/android_memset16.S \
-        arch-x86_64/android_memset32.S \
-
-LOCAL_C_INCLUDES := $(libcutils_c_includes)
-LOCAL_EXPORT_STATIC_LIBRARY_HEADERS := libdebuggerd_client
-LOCAL_STATIC_LIBRARIES := liblog libdebuggerd_client
-ifneq ($(ENABLE_CPUSETS),)
-LOCAL_CFLAGS += -DUSE_CPUSETS
-endif
-ifneq ($(ENABLE_SCHEDBOOST),)
-LOCAL_CFLAGS += -DUSE_SCHEDBOOST
-endif
-LOCAL_CFLAGS += -Werror -Wall -Wextra -std=gnu90
-LOCAL_CLANG := true
-LOCAL_SANITIZE := integer
-include $(BUILD_STATIC_LIBRARY)
-
-include $(CLEAR_VARS)
-LOCAL_MODULE := libcutils
-# TODO: remove liblog as whole static library, once we don't have prebuilt that requires
-# liblog symbols present in libcutils.
-LOCAL_WHOLE_STATIC_LIBRARIES := libcutils liblog
-LOCAL_EXPORT_STATIC_LIBRARY_HEADERS := libdebuggerd_client
-LOCAL_STATIC_LIBRARIES := libdebuggerd_client
-LOCAL_SHARED_LIBRARIES := liblog
-ifneq ($(ENABLE_CPUSETS),)
-LOCAL_CFLAGS += -DUSE_CPUSETS
-endif
-ifneq ($(ENABLE_SCHEDBOOST),)
-LOCAL_CFLAGS += -DUSE_SCHEDBOOST
-endif
-LOCAL_CFLAGS += -Werror -Wall -Wextra
-LOCAL_C_INCLUDES := $(libcutils_c_includes)
-LOCAL_CLANG := true
-LOCAL_SANITIZE := integer
-include $(BUILD_SHARED_LIBRARY)
-
-include $(call all-makefiles-under,$(LOCAL_PATH))
diff --git a/libcutils/tests/Android.bp b/libcutils/tests/Android.bp
new file mode 100644
index 0000000..530c747
--- /dev/null
+++ b/libcutils/tests/Android.bp
@@ -0,0 +1,72 @@
+// 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.
+
+cc_defaults {
+    name: "libcutils_test_default",
+    srcs: ["sockets_test.cpp"],
+
+    target: {
+        android: {
+            srcs: [
+                "MemsetTest.cpp",
+                "PropertiesTest.cpp",
+                "trace-dev_test.cpp",
+            ],
+        },
+
+        not_windows: {
+            srcs: ["test_str_parms.cpp"],
+        },
+    },
+
+    multilib: {
+        lib32: {
+            suffix: "32",
+        },
+        lib64: {
+            suffix: "64",
+        },
+    },
+}
+
+test_libraries = [
+    "libcutils",
+    "liblog",
+    "libbase",
+]
+
+cc_test {
+    name: "libcutils_test",
+    defaults: ["libcutils_test_default"],
+    host_supported: true,
+    shared_libs: test_libraries,
+}
+
+cc_test {
+    name: "libcutils_test_static",
+    defaults: ["libcutils_test_default"],
+    static_libs: ["libc"] + test_libraries,
+    stl: "libc++_static",
+
+    target: {
+        android: {
+            static_executable: true,
+        },
+        windows: {
+            host_ldlibs: ["-lws2_32"],
+
+            enabled: true,
+        },
+    },
+}
diff --git a/libcutils/tests/Android.mk b/libcutils/tests/Android.mk
deleted file mode 100644
index 52cf5f4..0000000
--- a/libcutils/tests/Android.mk
+++ /dev/null
@@ -1,81 +0,0 @@
-# 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.
-
-LOCAL_PATH := $(call my-dir)
-
-test_src_files := \
-    sockets_test.cpp \
-
-test_src_files_nonwindows := \
-    test_str_parms.cpp \
-
-test_target_only_src_files := \
-    MemsetTest.cpp \
-    PropertiesTest.cpp \
-    trace-dev_test.cpp \
-
-test_libraries := libcutils liblog libbase
-
-
-#
-# Target.
-#
-
-include $(CLEAR_VARS)
-LOCAL_MODULE := libcutils_test
-LOCAL_SRC_FILES := $(test_src_files) $(test_target_only_src_files)
-LOCAL_SHARED_LIBRARIES := $(test_libraries)
-LOCAL_MULTILIB := both
-LOCAL_MODULE_STEM_32 := $(LOCAL_MODULE)32
-LOCAL_MODULE_STEM_64 := $(LOCAL_MODULE)64
-include $(BUILD_NATIVE_TEST)
-
-include $(CLEAR_VARS)
-LOCAL_MODULE := libcutils_test_static
-LOCAL_FORCE_STATIC_EXECUTABLE := true
-LOCAL_SRC_FILES := $(test_src_files) $(test_target_only_src_files)
-LOCAL_STATIC_LIBRARIES := libc $(test_libraries)
-LOCAL_CXX_STL := libc++_static
-LOCAL_MULTILIB := both
-LOCAL_MODULE_STEM_32 := $(LOCAL_MODULE)32
-LOCAL_MODULE_STEM_64 := $(LOCAL_MODULE)64
-include $(BUILD_NATIVE_TEST)
-
-
-#
-# Host.
-#
-
-include $(CLEAR_VARS)
-LOCAL_MODULE := libcutils_test
-LOCAL_SRC_FILES := $(test_src_files) $(test_src_files_nonwindows)
-LOCAL_SHARED_LIBRARIES := $(test_libraries)
-LOCAL_MULTILIB := both
-LOCAL_MODULE_STEM_32 := $(LOCAL_MODULE)32
-LOCAL_MODULE_STEM_64 := $(LOCAL_MODULE)64
-include $(BUILD_HOST_NATIVE_TEST)
-
-include $(CLEAR_VARS)
-LOCAL_MODULE := libcutils_test_static
-LOCAL_SRC_FILES := $(test_src_files)
-LOCAL_SRC_FILES_darwin := $(test_src_files_nonwindows)
-LOCAL_SRC_FILES_linux := $(test_src_files_nonwindows)
-LOCAL_STATIC_LIBRARIES := $(test_libraries)
-LOCAL_LDLIBS_windows := -lws2_32
-LOCAL_CXX_STL := libc++_static
-LOCAL_MULTILIB := both
-LOCAL_MODULE_STEM_32 := $(LOCAL_MODULE)32
-LOCAL_MODULE_STEM_64 := $(LOCAL_MODULE)64
-LOCAL_MODULE_HOST_OS := darwin linux windows
-include $(BUILD_HOST_NATIVE_TEST)
diff --git a/liblog/Android.soong.mk b/liblog/Android.mk
similarity index 100%
rename from liblog/Android.soong.mk
rename to liblog/Android.mk
diff --git a/libpixelflinger/arch-mips/col32cb16blend.S b/libpixelflinger/arch-mips/col32cb16blend.S
index 5d18e55..57a6115 100644
--- a/libpixelflinger/arch-mips/col32cb16blend.S
+++ b/libpixelflinger/arch-mips/col32cb16blend.S
@@ -59,7 +59,7 @@
        .endm
 
        .text
-       .align
+       .align 4
 
        .global scanline_col32cb16blend_mips
        .ent    scanline_col32cb16blend_mips
diff --git a/libpixelflinger/arch-mips/t32cb16blend.S b/libpixelflinger/arch-mips/t32cb16blend.S
index 236a2c9..b365fd8 100644
--- a/libpixelflinger/arch-mips/t32cb16blend.S
+++ b/libpixelflinger/arch-mips/t32cb16blend.S
@@ -178,7 +178,7 @@
 #endif
 
     .text
-    .align
+    .align 4
 
     .global scanline_t32cb16blend_mips
     .ent    scanline_t32cb16blend_mips
diff --git a/libpixelflinger/col32cb16blend.S b/libpixelflinger/col32cb16blend.S
index 1831255..721fd7d 100644
--- a/libpixelflinger/col32cb16blend.S
+++ b/libpixelflinger/col32cb16blend.S
@@ -16,7 +16,7 @@
  */
 
     .text
-    .align
+    .align 4
 
     .global scanline_col32cb16blend_arm
 
diff --git a/libpixelflinger/col32cb16blend_neon.S b/libpixelflinger/col32cb16blend_neon.S
index cbd54d1..f000920 100644
--- a/libpixelflinger/col32cb16blend_neon.S
+++ b/libpixelflinger/col32cb16blend_neon.S
@@ -17,7 +17,7 @@
 
 
     .text
-    .align
+    .align 4
 
     .global scanline_col32cb16blend_neon
 
diff --git a/libpixelflinger/rotate90CW_4x4_16v6.S b/libpixelflinger/rotate90CW_4x4_16v6.S
index 8e3e142..de18c54 100644
--- a/libpixelflinger/rotate90CW_4x4_16v6.S
+++ b/libpixelflinger/rotate90CW_4x4_16v6.S
@@ -17,7 +17,7 @@
 
 
     .text
-    .align
+    .align 4
     
     .global rotate90CW_4x4_16v6
 
diff --git a/libpixelflinger/t32cb16blend.S b/libpixelflinger/t32cb16blend.S
index 1d40ad4..6ba6136 100644
--- a/libpixelflinger/t32cb16blend.S
+++ b/libpixelflinger/t32cb16blend.S
@@ -18,7 +18,7 @@
 
 	.text
 	.syntax unified
-	.align
+	.align 4
 	
 	.global scanline_t32cb16blend_arm
 
diff --git a/libutils/Android.bp b/libutils/Android.bp
new file mode 100644
index 0000000..1038db4
--- /dev/null
+++ b/libutils/Android.bp
@@ -0,0 +1,119 @@
+// Copyright (C) 2008 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.
+
+cc_library {
+    name: "libutils",
+    host_supported: true,
+
+    srcs: [
+        "CallStack.cpp",
+        "FileMap.cpp",
+        "JenkinsHash.cpp",
+        "LinearTransform.cpp",
+        "Log.cpp",
+        "NativeHandle.cpp",
+        "Printer.cpp",
+        "PropertyMap.cpp",
+        "RefBase.cpp",
+        "SharedBuffer.cpp",
+        "Static.cpp",
+        "StopWatch.cpp",
+        "String8.cpp",
+        "String16.cpp",
+        "SystemClock.cpp",
+        "Threads.cpp",
+        "Timers.cpp",
+        "Tokenizer.cpp",
+        "Unicode.cpp",
+        "VectorImpl.cpp",
+        "misc.cpp",
+    ],
+
+    cflags: ["-Werror"],
+    include_dirs: ["external/safe-iop/include"],
+
+    arch: {
+        mips: {
+            cflags: ["-DALIGN_DOUBLE"],
+        },
+    },
+
+    target: {
+        android: {
+            srcs: [
+                "BlobCache.cpp",
+                "Looper.cpp",
+                "ProcessCallStack.cpp",
+                "Trace.cpp",
+            ],
+
+            cflags: ["-fvisibility=protected"],
+
+            shared_libs: [
+                "libbacktrace",
+                "libcutils",
+                "libdl",
+                "liblog",
+            ],
+
+            sanitize: {
+                misc_undefined: ["integer"],
+            },
+        },
+
+        host: {
+            cflags: ["-DLIBUTILS_NATIVE=1"],
+
+            shared: {
+                enabled: false,
+            },
+        },
+
+        linux: {
+            srcs: [
+                "Looper.cpp",
+                "ProcessCallStack.cpp",
+            ],
+        },
+
+        darwin: {
+            cflags: ["-Wno-unused-parameter"],
+        },
+
+        // Under MinGW, ctype.h doesn't need multi-byte support
+        windows: {
+            cflags: ["-DMB_CUR_MAX=1"],
+
+            enabled: true,
+        },
+    },
+
+    clang: true,
+}
+
+// Include subdirectory makefiles
+// ============================================================
+
+cc_test {
+    name: "SharedBufferTest",
+    host_supported: true,
+    static_libs: [
+        "libutils",
+        "libcutils",
+    ],
+    shared_libs: ["liblog"],
+    srcs: ["SharedBufferTest.cpp"],
+}
+
+subdirs = ["tests"]
diff --git a/libutils/Android.mk b/libutils/Android.mk
deleted file mode 100644
index 6f88a6d..0000000
--- a/libutils/Android.mk
+++ /dev/null
@@ -1,127 +0,0 @@
-# Copyright (C) 2008 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.
-
-LOCAL_PATH:= $(call my-dir)
-
-commonSources:= \
-	CallStack.cpp \
-	FileMap.cpp \
-	JenkinsHash.cpp \
-	LinearTransform.cpp \
-	Log.cpp \
-	NativeHandle.cpp \
-	Printer.cpp \
-	PropertyMap.cpp \
-	RefBase.cpp \
-	SharedBuffer.cpp \
-	Static.cpp \
-	StopWatch.cpp \
-	String8.cpp \
-	String16.cpp \
-	SystemClock.cpp \
-	Threads.cpp \
-	Timers.cpp \
-	Tokenizer.cpp \
-	Unicode.cpp \
-	VectorImpl.cpp \
-	misc.cpp \
-
-host_commonCflags := -DLIBUTILS_NATIVE=1 $(TOOL_CFLAGS) -Werror
-
-# For the host
-# =====================================================
-include $(CLEAR_VARS)
-LOCAL_SRC_FILES:= $(commonSources)
-LOCAL_SRC_FILES_linux := Looper.cpp ProcessCallStack.cpp
-LOCAL_CFLAGS_darwin := -Wno-unused-parameter
-LOCAL_MODULE:= libutils
-LOCAL_STATIC_LIBRARIES := liblog
-LOCAL_CFLAGS += $(host_commonCflags)
-# Under MinGW, ctype.h doesn't need multi-byte support
-LOCAL_CFLAGS_windows := -DMB_CUR_MAX=1
-LOCAL_MULTILIB := both
-LOCAL_MODULE_HOST_OS := darwin linux windows
-LOCAL_C_INCLUDES += external/safe-iop/include
-include $(BUILD_HOST_STATIC_LIBRARY)
-
-
-# For the device, static
-# =====================================================
-include $(CLEAR_VARS)
-
-
-# we have the common sources, plus some device-specific stuff
-LOCAL_SRC_FILES:= \
-	$(commonSources) \
-	BlobCache.cpp \
-	Looper.cpp \
-	ProcessCallStack.cpp \
-	Trace.cpp
-
-ifeq ($(TARGET_ARCH),mips)
-LOCAL_CFLAGS += -DALIGN_DOUBLE
-endif
-LOCAL_CFLAGS += -Werror -fvisibility=protected
-
-LOCAL_STATIC_LIBRARIES := \
-	libcutils \
-	libc
-
-LOCAL_SHARED_LIBRARIES := \
-        libbacktrace \
-        liblog \
-        libdl
-
-LOCAL_MODULE := libutils
-LOCAL_CLANG := true
-LOCAL_SANITIZE := integer
-LOCAL_C_INCLUDES += external/safe-iop/include
-include $(BUILD_STATIC_LIBRARY)
-
-# For the device, shared
-# =====================================================
-include $(CLEAR_VARS)
-LOCAL_MODULE:= libutils
-LOCAL_WHOLE_STATIC_LIBRARIES := libutils
-LOCAL_SHARED_LIBRARIES := \
-        libbacktrace \
-        libcutils \
-        libdl \
-        liblog
-LOCAL_CFLAGS := -Werror
-LOCAL_C_INCLUDES += external/safe-iop/include
-
-LOCAL_CLANG := true
-LOCAL_SANITIZE := integer
-include $(BUILD_SHARED_LIBRARY)
-
-# Include subdirectory makefiles
-# ============================================================
-
-include $(CLEAR_VARS)
-LOCAL_MODULE := SharedBufferTest
-LOCAL_STATIC_LIBRARIES := libutils libcutils
-LOCAL_SHARED_LIBRARIES := liblog
-LOCAL_SRC_FILES := SharedBufferTest.cpp
-include $(BUILD_NATIVE_TEST)
-
-include $(CLEAR_VARS)
-LOCAL_MODULE := SharedBufferTest
-LOCAL_STATIC_LIBRARIES := libutils libcutils
-LOCAL_SHARED_LIBRARIES := liblog
-LOCAL_SRC_FILES := SharedBufferTest.cpp
-include $(BUILD_HOST_NATIVE_TEST)
-
-# Build the tests in the tests/ subdirectory.
-include $(call first-makefiles-under,$(LOCAL_PATH))
diff --git a/libutils/tests/Android.bp b/libutils/tests/Android.bp
new file mode 100644
index 0000000..9e2fd5f
--- /dev/null
+++ b/libutils/tests/Android.bp
@@ -0,0 +1,49 @@
+//
+// 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.
+//
+
+// Build the unit tests.
+
+cc_test {
+    name: "libutils_tests",
+
+    srcs: [
+        "BlobCache_test.cpp",
+        "BitSet_test.cpp",
+        "Looper_test.cpp",
+        "LruCache_test.cpp",
+        "String8_test.cpp",
+        "StrongPointer_test.cpp",
+        "SystemClock_test.cpp",
+        "Unicode_test.cpp",
+        "Vector_test.cpp",
+    ],
+
+    shared_libs: [
+        "libz",
+        "liblog",
+        "libcutils",
+        "libutils",
+    ],
+}
+
+cc_test_host {
+    name: "libutils_tests_host",
+    srcs: ["Vector_test.cpp"],
+    static_libs: [
+        "libutils",
+        "liblog",
+    ],
+}
diff --git a/libutils/tests/Android.mk b/libutils/tests/Android.mk
deleted file mode 100644
index 21fe19c..0000000
--- a/libutils/tests/Android.mk
+++ /dev/null
@@ -1,49 +0,0 @@
-#
-# 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.
-#
-
-# Build the unit tests.
-LOCAL_PATH := $(call my-dir)
-
-include $(CLEAR_VARS)
-
-LOCAL_MODULE := libutils_tests
-
-LOCAL_SRC_FILES := \
-    BlobCache_test.cpp \
-    BitSet_test.cpp \
-    Looper_test.cpp \
-    LruCache_test.cpp \
-    String8_test.cpp \
-    StrongPointer_test.cpp \
-    SystemClock_test.cpp \
-    Unicode_test.cpp \
-    Vector_test.cpp \
-
-LOCAL_SHARED_LIBRARIES := \
-    libz \
-    liblog \
-    libcutils \
-    libutils \
-
-include $(BUILD_NATIVE_TEST)
-
-include $(CLEAR_VARS)
-
-LOCAL_MODULE := libutils_tests_host
-LOCAL_SRC_FILES := Vector_test.cpp
-LOCAL_STATIC_LIBRARIES := libutils liblog
-
-include $(BUILD_HOST_NATIVE_TEST)
diff --git a/libziparchive/Android.bp b/libziparchive/Android.bp
new file mode 100644
index 0000000..5ed0fe8
--- /dev/null
+++ b/libziparchive/Android.bp
@@ -0,0 +1,111 @@
+//
+// Copyright (C) 2013 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.
+
+cc_defaults {
+    name: "libziparchive_flags",
+    cflags: [
+        // ZLIB_CONST turns on const for input buffers, which is pretty standard.
+        "-DZLIB_CONST",
+        "-Werror",
+        "-Wall",
+    ],
+    cppflags: [
+        "-Wold-style-cast",
+        // Incorrectly warns when C++11 empty brace {} initializer is used.
+        // https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61489
+        "-Wno-missing-field-initializers",
+    ],
+}
+
+cc_defaults {
+    name: "libziparchive_defaults",
+    srcs: [
+        "zip_archive.cc",
+        "zip_archive_stream_entry.cc",
+        "zip_writer.cc",
+    ],
+
+    target: {
+        windows: {
+            cflags: ["-mno-ms-bitfields"],
+
+            enabled: true,
+        },
+    },
+
+    shared_libs: [
+        "libbase",
+        "liblog",
+    ],
+}
+
+
+cc_library {
+    name: "libziparchive",
+    host_supported: true,
+    defaults: ["libziparchive_defaults", "libziparchive_flags"],
+    static_libs: ["libutils"],
+    shared_libs: ["liblog", "libbase"],
+    target: {
+        android: {
+            static_libs: ["libz"],
+        },
+        host: {
+            shared_libs: ["libz-host"],
+        },
+    },
+}
+
+// Also provide libziparchive-host until everything is switched over to using libziparchive
+cc_library {
+    name: "libziparchive-host",
+    host_supported: true,
+    device_supported: false,
+    defaults: ["libziparchive_defaults", "libziparchive_flags"],
+    shared_libs: ["libz-host"],
+    static_libs: ["libutils"],
+}
+
+// Tests.
+cc_test {
+    name: "ziparchive-tests",
+    host_supported: true,
+    defaults: ["libziparchive_flags"],
+
+    srcs: [
+        "entry_name_utils_test.cc",
+        "zip_archive_test.cc",
+        "zip_writer_test.cc",
+    ],
+    shared_libs: [
+        "libbase",
+        "liblog",
+    ],
+
+    static_libs: [
+        "libziparchive",
+        "libz",
+        "libutils",
+    ],
+
+    target: {
+        host: {
+            cppflags: ["-Wno-unnamed-type-template-args"],
+        },
+        windows: {
+            enabled: true,
+        },
+    },
+}
diff --git a/libziparchive/Android.mk b/libziparchive/Android.mk
deleted file mode 100644
index 3cd8b87..0000000
--- a/libziparchive/Android.mk
+++ /dev/null
@@ -1,106 +0,0 @@
-#
-# Copyright (C) 2013 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.
-
-LOCAL_PATH := $(call my-dir)
-
-libziparchive_source_files := \
-    zip_archive.cc \
-    zip_archive_stream_entry.cc \
-    zip_writer.cc \
-
-libziparchive_test_files := \
-    entry_name_utils_test.cc \
-    zip_archive_test.cc \
-    zip_writer_test.cc \
-
-# ZLIB_CONST turns on const for input buffers, which is pretty standard.
-libziparchive_common_c_flags := \
-    -DZLIB_CONST \
-    -Werror \
-    -Wall \
-
-# Incorrectly warns when C++11 empty brace {} initializer is used.
-# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61489
-libziparchive_common_cpp_flags := \
-    -Wold-style-cast \
-    -Wno-missing-field-initializers \
-
-include $(CLEAR_VARS)
-LOCAL_CPP_EXTENSION := .cc
-LOCAL_SRC_FILES := $(libziparchive_source_files)
-LOCAL_STATIC_LIBRARIES := libz
-LOCAL_SHARED_LIBRARIES := libutils libbase
-LOCAL_MODULE:= libziparchive
-LOCAL_CFLAGS := $(libziparchive_common_c_flags)
-LOCAL_CPPFLAGS := $(libziparchive_common_cpp_flags)
-include $(BUILD_STATIC_LIBRARY)
-
-include $(CLEAR_VARS)
-LOCAL_CPP_EXTENSION := .cc
-LOCAL_SRC_FILES := $(libziparchive_source_files)
-LOCAL_STATIC_LIBRARIES := libz libutils libbase
-LOCAL_MODULE:= libziparchive-host
-LOCAL_CFLAGS := $(libziparchive_common_c_flags)
-LOCAL_CFLAGS_windows := -mno-ms-bitfields
-LOCAL_CPPFLAGS := $(libziparchive_common_cpp_flags)
-
-LOCAL_MULTILIB := both
-LOCAL_MODULE_HOST_OS := darwin linux windows
-include $(BUILD_HOST_STATIC_LIBRARY)
-
-include $(CLEAR_VARS)
-LOCAL_CPP_EXTENSION := .cc
-LOCAL_SRC_FILES := $(libziparchive_source_files)
-LOCAL_STATIC_LIBRARIES := libutils
-LOCAL_SHARED_LIBRARIES := libz-host liblog libbase
-LOCAL_MODULE:= libziparchive-host
-LOCAL_CFLAGS := $(libziparchive_common_c_flags)
-LOCAL_CPPFLAGS := $(libziparchive_common_cpp_flags)
-LOCAL_MULTILIB := both
-include $(BUILD_HOST_SHARED_LIBRARY)
-
-# Tests.
-include $(CLEAR_VARS)
-LOCAL_MODULE := ziparchive-tests
-LOCAL_CPP_EXTENSION := .cc
-LOCAL_CFLAGS := $(libziparchive_common_c_flags)
-LOCAL_CPPFLAGS := $(libziparchive_common_cpp_flags)
-LOCAL_SRC_FILES := $(libziparchive_test_files)
-LOCAL_SHARED_LIBRARIES := \
-    libbase \
-    liblog \
-
-LOCAL_STATIC_LIBRARIES := \
-    libziparchive \
-    libz \
-    libutils \
-
-include $(BUILD_NATIVE_TEST)
-
-include $(CLEAR_VARS)
-LOCAL_MODULE := ziparchive-tests-host
-LOCAL_CPP_EXTENSION := .cc
-LOCAL_CFLAGS := $(libziparchive_common_c_flags)
-LOCAL_CPPFLAGS := -Wno-unnamed-type-template-args $(libziparchive_common_cpp_flags)
-LOCAL_SRC_FILES := $(libziparchive_test_files)
-LOCAL_STATIC_LIBRARIES := \
-    libziparchive-host \
-    libz \
-    libbase \
-    libutils \
-    liblog \
-
-LOCAL_MODULE_HOST_OS := darwin linux windows
-include $(BUILD_HOST_NATIVE_TEST)
diff --git a/logcat/logcatd.rc b/logcat/logcatd.rc
index 7d70dd9..ce1a451 100644
--- a/logcat/logcatd.rc
+++ b/logcat/logcatd.rc
@@ -1,21 +1,62 @@
+#
+# init scriptures for logcatd persistent logging.
+#
+# Make sure any property changes are only performed with /data mounted, after
+# post-fs-data state because otherwise behavior is undefined. The exceptions
+# are device adjustments for logcatd service properties (persist.* overrides
+# notwithstanding) for logd.logpersistd.size and logd.logpersistd.buffer.
+
+# persist to non-persistent trampolines to permit device properties can be
+# overridden when /data mounts, or during runtime.
+on property:persist.logd.logpersistd.size=256
+    setprop persist.logd.logpersistd.size ""
+    setprop logd.logpersistd.size ""
+
+on property:persist.logd.logpersistd.size=*
+    # expect /init to report failure if property empty (default)
+    setprop logd.logpersistd.size ${persist.logd.logpersistd.size}
+
+on property:persist.logd.logpersistd.buffer=all
+    setprop persist.logd.logpersistd.buffer ""
+    setprop logd.logpersistd.buffer ""
+
+on property:persist.logd.logpersistd.buffer=*
+    # expect /init to report failure if property empty (default)
+    setprop logd.logpersistd.buffer ${persist.logd.logpersistd.buffer}
+
 on property:persist.logd.logpersistd=logcatd
+    setprop logd.logpersistd logcatd
+
+# enable, prep and start logcatd service
+on load_persist_props_action
+    setprop logd.logpersistd.enable true
+
+on property:logd.logpersistd.enable=true && property:logd.logpersistd=logcatd
     # all exec/services are called with umask(077), so no gain beyond 0700
     mkdir /data/misc/logd 0700 logd log
     # logd for write to /data/misc/logd, log group for read from pstore (-L)
-    exec - logd log -- /system/bin/logcat -L -b ${persist.logd.logpersistd.buffer:-all} -v threadtime -v usec -v printable -D -f /data/misc/logd/logcat -r 1024 -n ${persist.logd.logpersistd.size:-256}
+    exec - logd log -- /system/bin/logcat -L -b ${logd.logpersistd.buffer:-all} -v threadtime -v usec -v printable -D -f /data/misc/logd/logcat -r 1024 -n ${logd.logpersistd.size:-256}
     start logcatd
 
-on property:persist.logd.logpersistd=clear
+# stop logcatd service and clear data
+on property:logd.logpersistd.enable=true && property:logd.logpersistd=clear
+    setprop persist.logd.logpersistd ""
     stop logcatd
     # logd for clear of only our files in /data/misc/logd
-    exec - logd log -- /system/bin/logcat -c -f /data/misc/logd/logcat -n ${persist.logd.logpersistd.size:-256}
-    setprop persist.logd.logpersistd ""
+    exec - logd log -- /system/bin/logcat -c -f /data/misc/logd/logcat -n ${logd.logpersistd.size:-256}
+    setprop logd.logpersistd ""
 
-on property:persist.logd.logpersistd=stop
+# stop logcatd service
+on property:logd.logpersistd=stop
+    setprop persist.logd.logpersistd ""
     stop logcatd
-    setprop persist.logd.logpersistd ""
+    setprop logd.logpersistd ""
 
-service logcatd /system/bin/logcat -b ${persist.logd.logpersistd.buffer:-all} -v threadtime -v usec -v printable -D -f /data/misc/logd/logcat -r 1024 -n ${persist.logd.logpersistd.size:-256}
+on property:logd.logpersistd.enable=false
+    stop logcatd
+
+# logcatd service
+service logcatd /system/bin/logcat -b ${logd.logpersistd.buffer:-all} -v threadtime -v usec -v printable -D -f /data/misc/logd/logcat -r 1024 -n ${logd.logpersistd.size:-256}
     class late_start
     disabled
     # logd for write to /data/misc/logd, log group for read from log daemon
diff --git a/logcat/logpersist b/logcat/logpersist
index d1eda37..e9982e2 100755
--- a/logcat/logpersist
+++ b/logcat/logpersist
@@ -8,8 +8,16 @@
    ;;
 esac
 
-data=/data/misc/logd
 property=persist.logd.logpersistd
+
+case `getprop ${property#persist.}.enable` in
+true) ;;
+*) echo "${progname} - Disabled"
+   exit 1
+   ;;
+esac
+
+data=/data/misc/logd
 service=logcatd
 size_default=256
 buffer_default=all
@@ -69,11 +77,11 @@
   su logd xargs cat
   ;;
 *.start)
-  current_buffer="`getprop ${property}.buffer`"
-  current_size="`getprop ${property}.size`"
-  if [ "${service}" = "`getprop ${property}`" ]; then
+  current_buffer="`getprop ${property#persist.}.buffer`"
+  current_size="`getprop ${property#persist.}.size`"
+  if [ "${service}" = "`getprop ${property#persist.}`" ]; then
     if [ "true" = "${clear}" ]; then
-      setprop ${property} "clear"
+      setprop ${property#persist.} "clear"
     elif [ "${buffer}|${size}" != "${current_buffer}|${current_size}" ]; then
       echo   "ERROR: Changing existing collection parameters from" >&2
       if [ "${buffer}" != "${current_buffer}" ]; then
@@ -96,22 +104,30 @@
       exit 1
     fi
   elif [ "true" = "${clear}" ]; then
-    setprop ${property} "clear"
+    setprop ${property#persist.} "clear"
   fi
   if [ -n "${buffer}${current_buffer}" ]; then
     setprop ${property}.buffer "${buffer}"
+    if [ -z "${buffer}" ]; then
+      # deal with trampoline for empty properties
+      setprop ${property#persist.}.buffer ""
+    fi
   fi
   if [ -n "${size}${current_size}" ]; then
     setprop ${property}.size "${size}"
+    if [ -z "${size}" ]; then
+      # deal with trampoline for empty properties
+      setprop ${property#persist.}.size ""
+    fi
   fi
-  while [ "clear" = "`getprop ${property}`" ]; do
+  while [ "clear" = "`getprop ${property#persist.}`" ]; do
     continue
   done
   # ${service}.rc does the heavy lifting with the following trigger
   setprop ${property} ${service}
-  getprop ${property}
   # 20ms done, to permit process feedback check
   sleep 1
+  getprop ${property#persist.}
   # also generate an error return code if not found running
   pgrep -u ${data##*/} ${service%d}
   ;;
@@ -124,13 +140,17 @@
   else
     setprop ${property} "stop"
   fi
-  if [ -n "`getprop ${property}.buffer`" ]; then
+  if [ -n "`getprop ${property#persist.}.buffer`" ]; then
     setprop ${property}.buffer ""
+    # deal with trampoline for empty properties
+    setprop ${property#persist.}.buffer ""
   fi
-  if [ -n "`getprop ${property}.size`" ]; then
+  if [ -n "`getprop ${property#persist.}.size`" ]; then
     setprop ${property}.size ""
+    # deal with trampoline for empty properties
+    setprop ${property#persist.}.size ""
   fi
-  while [ "clear" = "`getprop ${property}`" ]; do
+  while [ "clear" = "`getprop ${property#persist.}`" ]; do
     continue
   done
   ;;
diff --git a/logd/README.property b/logd/README.property
index 4bc5541..10694d8 100644
--- a/logd/README.property
+++ b/logd/README.property
@@ -1,4 +1,4 @@
-The properties that logd responds to are:
+The properties that logd and friends react to are:
 
 name                       type default  description
 ro.logd.auditd.dmesg       bool   true   selinux audit messages duplicated and
@@ -9,8 +9,16 @@
 ro.logd.statistics         bool+ svelte+ Enable logcat -S statistics.
 ro.debuggable              number        if not "1", logd.statistics &
                                          ro.logd.kernel default false.
+logd.logpersistd.enable    bool   auto   Safe to start logpersist daemon service
+logd.logpersistd          string persist Enable logpersist daemon, "logcatd"
+                                         turns on logcat -f in logd context.
+					 Responds to logcatd, clear and stop.
+logd.logpersistd.buffer          persist logpersistd buffers to collect
+logd.logpersistd.size            persist logpersistd size in MB
 persist.logd.logpersistd   string        Enable logpersist daemon, "logcatd"
-                                         turns on logcat -f in logd context
+                                         turns on logcat -f in logd context.
+persist.logd.logpersistd.buffer    all   logpersistd buffers to collect
+persist.logd.logpersistd.size      256   logpersistd size in MB
 persist.logd.size          number  ro    Global default size of the buffer for
                                          all log ids at initial startup, at
                                          runtime use: logcat -b all -G <value>
@@ -44,6 +52,7 @@
 persist.log.tag.<tag>      string build  default for log.tag.<tag>
 
 NB:
+- auto - managed by /init
 - bool+ - "true", "false" and comma separated list of "eng" (forced false if
   ro.debuggable is not "1") or "svelte" (forced false if ro.config.low_ram is
   true).