diff --git a/arm_compiler.BUILD b/arm_compiler.BUILD
new file mode 100644
index 00000000000..b231d0180e3
--- /dev/null
+++ b/arm_compiler.BUILD
@@ -0,0 +1,81 @@
+package(default_visibility = ['//visibility:public'])
+
+filegroup(
+  name = 'gcc',
+  srcs = [
+    'bin/arm-linux-gnueabihf-gcc',
+  ],
+)
+
+filegroup(
+  name = 'ar',
+  srcs = [
+    'bin/arm-linux-gnueabihf-ar',
+  ],
+)
+
+filegroup(
+  name = 'ld',
+  srcs = [
+    'bin/arm-linux-gnueabihf-ld',
+  ],
+)
+
+filegroup(
+  name = 'nm',
+  srcs = [
+    'bin/arm-linux-gnueabihf-nm',
+  ],
+)
+
+filegroup(
+  name = 'objcopy',
+  srcs = [
+    'bin/arm-linux-gnueabihf-objcopy',
+  ],
+)
+
+filegroup(
+  name = 'objdump',
+  srcs = [
+    'bin/arm-linux-gnueabihf-objdump',
+  ],
+)
+
+filegroup(
+  name = 'strip',
+  srcs = [
+    'bin/arm-linux-gnueabihf-strip',
+  ],
+)
+
+filegroup(
+  name = 'as',
+  srcs = [
+    'bin/arm-linux-gnueabihf-as',
+  ],
+)
+
+filegroup(
+  name = 'compiler_pieces',
+  srcs = glob([
+    'arm-linux-gnueabihf/**',
+    'libexec/**',
+    'lib/gcc/arm-linux-gnueabihf/**',
+    'include/**',
+  ]),
+)
+
+filegroup(
+  name = 'compiler_components',
+  srcs = [
+    ':gcc',
+    ':ar',
+    ':ld',
+    ':nm',
+    ':objcopy',
+    ':objdump',
+    ':strip',
+    ':as',
+  ],
+)
diff --git a/tensorflow/contrib/makefile/Makefile b/tensorflow/contrib/makefile/Makefile
index fc465ab380b..2e45ddad54b 100644
--- a/tensorflow/contrib/makefile/Makefile
+++ b/tensorflow/contrib/makefile/Makefile
@@ -202,7 +202,7 @@ ifeq ($(TARGET),LINUX)
 endif
 # If we're cross-compiling for the Raspberry Pi, use the right gcc.
 ifeq ($(TARGET),PI)
-	CXXFLAGS += -D__ANDROID_TYPES_SLIM__
+	CXXFLAGS += -D__ANDROID_TYPES_SLIM__ -DRASPBERRY_PI
 	LDFLAGS := -Wl,--no-whole-archive
 	LIBS += -ldl -lpthread
 	LIBFLAGS += -Wl,--allow-multiple-definition -Wl,--whole-archive
diff --git a/tensorflow/core/platform/platform.h b/tensorflow/core/platform/platform.h
index 7c44b22eff6..12120c4ab96 100644
--- a/tensorflow/core/platform/platform.h
+++ b/tensorflow/core/platform/platform.h
@@ -43,9 +43,10 @@ limitations under the License.
 #elif defined(__arm__)
 #define PLATFORM_POSIX
 
-// Since there's no macro for the Raspberry Pi, assume we're on a mobile
-// platform if we're compiling for the ARM CPU.
+// Require an outside macro to tell us if we're building for Raspberry Pi.
+#if !defined(RASPBERRY_PI)
 #define IS_MOBILE_PLATFORM
+#endif  // !defined(RASPBERRY_PI)
 
 #else
 // If no platform specified, use:
diff --git a/tensorflow/workspace.bzl b/tensorflow/workspace.bzl
index 71e4b8f5bb3..6dd3fc4acd5 100644
--- a/tensorflow/workspace.bzl
+++ b/tensorflow/workspace.bzl
@@ -3,9 +3,12 @@
 load("//third_party/gpus:cuda_configure.bzl", "cuda_configure")
 load("//third_party/sycl:sycl_configure.bzl", "sycl_configure")
 load("//third_party/mkl:build_defs.bzl", "mkl_repository")
-load("@io_bazel_rules_closure//closure/private:java_import_external.bzl", "java_import_external")
+load("@io_bazel_rules_closure//closure/private:java_import_external.bzl",
+     "java_import_external")
 load("@io_bazel_rules_closure//closure:defs.bzl", "filegroup_external")
 load("//third_party/py:python_configure.bzl", "python_configure")
+load("//third_party/toolchains/cpus/arm:arm_compiler_configure.bzl",
+     "arm_compiler_configure")
 
 
 def _is_windows(repository_ctx):
@@ -83,7 +86,6 @@ temp_workaround_http_archive = repository_rule(
     },
 )
 
-
 # Executes specified command with arguments and calls 'fail' if it exited with
 # non-zero code
 def _execute_and_check_ret_code(repo_ctx, cmd_and_args):
@@ -142,6 +144,12 @@ def tf_workspace(path_prefix="", tf_repo_name=""):
   sycl_configure(name="local_config_sycl")
   python_configure(name="local_config_python")
 
+  # Point //external/local_config_arm_compiler to //external/arm_compiler
+  arm_compiler_configure(
+      name="local_config_arm_compiler",
+      remote_config_repo="../arm_compiler",
+      build_file = str(Label("//third_party/toolchains/cpus/arm:BUILD")))
+
   mkl_repository(
       name = "mkl",
       urls = [
@@ -169,6 +177,17 @@ def tf_workspace(path_prefix="", tf_repo_name=""):
       build_file = str(Label("//third_party:eigen.BUILD")),
   )
 
+  native.new_http_archive(
+    name = "arm_compiler",
+    build_file = str(Label("//:arm_compiler.BUILD")),
+    sha256 = "970285762565c7890c6c087d262b0a18286e7d0384f13a37786d8521773bc969",
+    strip_prefix = "tools-0e906ebc527eab1cdbf7adabff5b474da9562e9f/arm-bcm2708/arm-rpi-4.9.3-linux-gnueabihf",
+    urls = [
+        "http://mirror.bazel.build/github.com/raspberrypi/tools/archive/0e906ebc527eab1cdbf7adabff5b474da9562e9f.tar.gz",
+        "https://github.com/raspberrypi/tools/archive/0e906ebc527eab1cdbf7adabff5b474da9562e9f.tar.gz",
+    ],
+  )
+
   native.new_http_archive(
       name = "libxsmm_archive",
       urls = [
diff --git a/third_party/toolchains/cpus/arm/BUILD b/third_party/toolchains/cpus/arm/BUILD
new file mode 100644
index 00000000000..10c7867c233
--- /dev/null
+++ b/third_party/toolchains/cpus/arm/BUILD
@@ -0,0 +1,49 @@
+package(default_visibility = ["//visibility:public"])
+
+cc_toolchain_suite(
+    name = "toolchain",
+    toolchains = {
+        "armeabi|compiler": ":cc-compiler-armeabi",
+        "local|compiler": ":cc-compiler-local",
+    },
+)
+
+filegroup(
+    name = "empty",
+    srcs = [],
+)
+
+filegroup(
+    name = "arm_linux_all_files",
+    srcs = [
+        "@arm_compiler//:compiler_pieces",
+    ],
+)
+
+cc_toolchain(
+    name = "cc-compiler-local",
+    all_files = ":empty",
+    compiler_files = ":empty",
+    cpu = "local",
+    dwp_files = ":empty",
+    dynamic_runtime_libs = [":empty"],
+    linker_files = ":empty",
+    objcopy_files = ":empty",
+    static_runtime_libs = [":empty"],
+    strip_files = ":empty",
+    supports_param_files = 1,
+)
+
+cc_toolchain(
+    name = "cc-compiler-armeabi",
+    all_files = ":arm_linux_all_files",
+    compiler_files = ":arm_linux_all_files",
+    cpu = "armeabi",
+    dwp_files = ":empty",
+    dynamic_runtime_libs = [":empty"],
+    linker_files = ":arm_linux_all_files",
+    objcopy_files = "arm_linux_all_files",
+    static_runtime_libs = [":empty"],
+    strip_files = "arm_linux_all_files",
+    supports_param_files = 1,
+)
diff --git a/third_party/toolchains/cpus/arm/CROSSTOOL.tpl b/third_party/toolchains/cpus/arm/CROSSTOOL.tpl
new file mode 100644
index 00000000000..6753476c153
--- /dev/null
+++ b/third_party/toolchains/cpus/arm/CROSSTOOL.tpl
@@ -0,0 +1,874 @@
+major_version: "local"
+minor_version: ""
+default_target_cpu: "same_as_host"
+
+default_toolchain {
+  cpu: "k8"
+  toolchain_identifier: "local_linux"
+}
+default_toolchain {
+  cpu: "piii"
+  toolchain_identifier: "local_linux"
+}
+default_toolchain {
+  cpu: "darwin"
+  toolchain_identifier: "local_darwin"
+}
+default_toolchain {
+  cpu: "freebsd"
+  toolchain_identifier: "local_freebsd"
+}
+default_toolchain {
+  cpu: "armeabi"
+  toolchain_identifier: "arm-linux-gnueabihf"
+}
+default_toolchain {
+  cpu: "arm"
+  toolchain_identifier: "local_linux"
+}
+default_toolchain {
+  cpu: "x64_windows"
+  toolchain_identifier: "local_windows_msys64"
+}
+default_toolchain {
+  cpu: "x64_windows_msvc"
+  toolchain_identifier: "vc_14_0_x64"
+}
+default_toolchain {
+  cpu: "s390x"
+  toolchain_identifier: "local_linux"
+}
+
+toolchain {
+  abi_version: "armeabi"
+  abi_libc_version: "armeabi"
+  builtin_sysroot: ""
+  compiler: "compiler"
+  host_system_name: "armeabi"
+  needsPic: true
+  supports_gold_linker: false
+  supports_incremental_linker: false
+  supports_fission: false
+  supports_interface_shared_objects: false
+  supports_normalizing_ar: false
+  supports_start_end_lib: false
+  target_libc: "armeabi"
+  target_cpu: "armeabi"
+  target_system_name: "armeabi"
+  toolchain_identifier: "arm-linux-gnueabihf"
+
+  tool_path { name: "ar" path: "%{ARM_COMPILER_PATH}%/bin/arm-linux-gnueabihf-ar" }
+  tool_path { name: "compat-ld" path: "/bin/false" }
+  tool_path { name: "cpp" path: "%{ARM_COMPILER_PATH}%/bin/arm-linux-gnueabihf-cpp" }
+  tool_path { name: "dwp" path: "%{ARM_COMPILER_PATH}%/bin/arm-linux-gnueabihf-dwp" }
+  tool_path { name: "gcc" path: "%{ARM_COMPILER_PATH}%/bin/arm-linux-gnueabihf-gcc" }
+  tool_path { name: "gcov" path: "%{ARM_COMPILER_PATH}%/bin/arm-linux-gnueabihf-gcov" }
+  tool_path { name: "ld" path: "%{ARM_COMPILER_PATH}%/bin/arm-linux-gnueabihf-ld" }
+
+  tool_path { name: "nm" path: "%{ARM_COMPILER_PATH}%/bin/arm-linux-gnueabihf-nm" }
+  tool_path { name: "objcopy" path: "%{ARM_COMPILER_PATH}%/bin/arm-linux-gnueabihf-objcopy" }
+  tool_path { name: "objdump" path: "%{ARM_COMPILER_PATH}%/bin/arm-linux-gnueabihf-objdump" }
+  tool_path { name: "strip" path: "%{ARM_COMPILER_PATH}%/bin/arm-linux-gnueabihf-strip" }
+
+  cxx_builtin_include_directory: "%{ARM_COMPILER_PATH}%/arm-linux-gnueabihf/include/c++/4.9.3/"
+  cxx_builtin_include_directory: "%{ARM_COMPILER_PATH}%/arm-linux-gnueabihf/sysroot/usr/include/"
+  cxx_builtin_include_directory: "%{ARM_COMPILER_PATH}%/arm-linux-gnueabihf/libc/usr/include/"
+  cxx_builtin_include_directory: "%{ARM_COMPILER_PATH}%/lib/gcc/arm-linux-gnueabihf/4.9.3/include"
+  cxx_builtin_include_directory: "%{ARM_COMPILER_PATH}%/lib/gcc/arm-linux-gnueabihf/4.9.3/include-fixed"
+  cxx_builtin_include_directory: "%{ARM_COMPILER_PATH}%/local_include"
+  cxx_builtin_include_directory: "/usr/include"
+
+  cxx_flag: "-std=c++11"	
+  # The cxx_builtin_include_directory directives don't seem to be adding these, so
+  # explicitly set them as flags. There's a query to the Bazel team outstanding about
+  # why this is necessary.
+  cxx_flag: "-isystem"
+  cxx_flag: "/usr/include/arm-linux-gnueabihf"
+  cxx_flag: "-isystem"
+  cxx_flag: "/usr/include/python2.7"
+  cxx_flag: "-isystem"
+  cxx_flag: "/usr/include/"
+  linker_flag: "-lstdc++"
+
+  unfiltered_cxx_flag: "-Wno-builtin-macro-redefined"
+  unfiltered_cxx_flag: "-D__DATE__=\"redacted\""
+  unfiltered_cxx_flag: "-D__TIMESTAMP__=\"redacted\""
+  unfiltered_cxx_flag: "-D__TIME__=\"redacted\""
+
+  unfiltered_cxx_flag: "-no-canonical-prefixes"
+  unfiltered_cxx_flag: "-fno-canonical-system-headers"
+
+  compiler_flag: "-U_FORTIFY_SOURCE"
+  compiler_flag: "-D_FORTIFY_SOURCE=1"
+  compiler_flag: "-fstack-protector"
+  compiler_flag: "-DRASPBERRY_PI"  # To differentiate from mobile builds.
+  linker_flag: "-Wl,-z,relro,-z,now"
+
+  linker_flag: "-no-canonical-prefixes"
+  linker_flag: "-pass-exit-codes"
+
+  linker_flag: "-Wl,--build-id=md5"
+  linker_flag: "-Wl,--hash-style=gnu"
+
+  compilation_mode_flags {
+    mode: DBG
+    # Enable debug symbols.
+    compiler_flag: "-g"
+  }
+  compilation_mode_flags {
+    mode: OPT
+
+    # No debug symbols.
+    # Maybe we should enable https://gcc.gnu.org/wiki/DebugFission for opt or
+    # even generally? However, that can't happen here, as it requires special
+    # handling in Bazel.
+    compiler_flag: "-g0"
+
+    # Conservative choice for -O
+    # -O3 can increase binary size and even slow down the resulting binaries.
+    # Profile first and / or use FDO if you need better performance than this.
+    compiler_flag: "-O2"
+
+    # Disable assertions
+    compiler_flag: "-DNDEBUG"
+
+    # Removal of unused code and data at link time (can this increase binary size in some cases?).
+    compiler_flag: "-ffunction-sections"
+    compiler_flag: "-fdata-sections"
+    linker_flag: "-Wl,--gc-sections"
+  }
+  linking_mode_flags { mode: DYNAMIC }
+
+}
+
+toolchain {
+  abi_version: "local"
+  abi_libc_version: "local"
+  builtin_sysroot: ""
+  compiler: "compiler"
+  host_system_name: "local"
+  needsPic: true
+  supports_gold_linker: false
+  supports_incremental_linker: false
+  supports_fission: false
+  supports_interface_shared_objects: false
+  supports_normalizing_ar: false
+  supports_start_end_lib: false
+  target_libc: "local"
+  target_cpu: "local"
+  target_system_name: "local"
+  toolchain_identifier: "local_linux"
+
+  tool_path { name: "ar" path: "/usr/bin/ar" }
+  tool_path { name: "compat-ld" path: "/usr/bin/ld" }
+  tool_path { name: "cpp" path: "/usr/bin/cpp" }
+  tool_path { name: "dwp" path: "/usr/bin/dwp" }
+  tool_path { name: "gcc" path: "/usr/bin/gcc" }
+  cxx_flag: "-std=c++0x"
+  linker_flag: "-lstdc++"
+  linker_flag: "-B/usr/bin/"
+
+  # TODO(bazel-team): In theory, the path here ought to exactly match the path
+  # used by gcc. That works because bazel currently doesn't track files at
+  # absolute locations and has no remote execution, yet. However, this will need
+  # to be fixed, maybe with auto-detection?
+  cxx_builtin_include_directory: "/usr/lib/gcc/"
+  cxx_builtin_include_directory: "/usr/local/include"
+  cxx_builtin_include_directory: "/usr/include"
+  tool_path { name: "gcov" path: "/usr/bin/gcov" }
+
+  # C(++) compiles invoke the compiler (as that is the one knowing where
+  # to find libraries), but we provide LD so other rules can invoke the linker.
+  tool_path { name: "ld" path: "/usr/bin/ld" }
+
+  tool_path { name: "nm" path: "/usr/bin/nm" }
+  tool_path { name: "objcopy" path: "/usr/bin/objcopy" }
+  objcopy_embed_flag: "-I"
+  objcopy_embed_flag: "binary"
+  tool_path { name: "objdump" path: "/usr/bin/objdump" }
+  tool_path { name: "strip" path: "/usr/bin/strip" }
+
+  # Anticipated future default.
+  unfiltered_cxx_flag: "-no-canonical-prefixes"
+  unfiltered_cxx_flag: "-fno-canonical-system-headers"
+
+  # Make C++ compilation deterministic. Use linkstamping instead of these
+  # compiler symbols.
+  unfiltered_cxx_flag: "-Wno-builtin-macro-redefined"
+  unfiltered_cxx_flag: "-D__DATE__=\"redacted\""
+  unfiltered_cxx_flag: "-D__TIMESTAMP__=\"redacted\""
+  unfiltered_cxx_flag: "-D__TIME__=\"redacted\""
+
+  # Security hardening on by default.
+  # Conservative choice; -D_FORTIFY_SOURCE=2 may be unsafe in some cases.
+  # We need to undef it before redefining it as some distributions now have
+  # it enabled by default.
+  compiler_flag: "-U_FORTIFY_SOURCE"
+  compiler_flag: "-D_FORTIFY_SOURCE=1"
+  compiler_flag: "-fstack-protector"
+  linker_flag: "-Wl,-z,relro,-z,now"
+
+  # Enable coloring even if there's no attached terminal. Bazel removes the
+  # escape sequences if --nocolor is specified. This isn't supported by gcc
+  # on Ubuntu 14.04.
+  # compiler_flag: "-fcolor-diagnostics"
+
+  # All warnings are enabled. Maybe enable -Werror as well?
+  compiler_flag: "-Wall"
+  # Enable a few more warnings that aren't part of -Wall.
+  compiler_flag: "-Wunused-but-set-parameter"
+  # But disable some that are problematic.
+  compiler_flag: "-Wno-free-nonheap-object" # has false positives
+
+  # Keep stack frames for debugging, even in opt mode.
+  compiler_flag: "-fno-omit-frame-pointer"
+
+  # Anticipated future default.
+  linker_flag: "-no-canonical-prefixes"
+  # Have gcc return the exit code from ld.
+  linker_flag: "-pass-exit-codes"
+  # Stamp the binary with a unique identifier.
+  linker_flag: "-Wl,--build-id=md5"
+  linker_flag: "-Wl,--hash-style=gnu"
+  # Gold linker only? Can we enable this by default?
+  # linker_flag: "-Wl,--warn-execstack"
+  # linker_flag: "-Wl,--detect-odr-violations"
+
+  compilation_mode_flags {
+    mode: DBG
+    # Enable debug symbols.
+    compiler_flag: "-g"
+  }
+  compilation_mode_flags {
+    mode: OPT
+
+    # No debug symbols.
+    # Maybe we should enable https://gcc.gnu.org/wiki/DebugFission for opt or
+    # even generally? However, that can't happen here, as it requires special
+    # handling in Bazel.
+    compiler_flag: "-g0"
+
+    # Conservative choice for -O
+    # -O3 can increase binary size and even slow down the resulting binaries.
+    # Profile first and / or use FDO if you need better performance than this.
+    compiler_flag: "-O2"
+
+    # Disable assertions
+    compiler_flag: "-DNDEBUG"
+
+    # Removal of unused code and data at link time (can this increase binary size in some cases?).
+    compiler_flag: "-ffunction-sections"
+    compiler_flag: "-fdata-sections"
+    linker_flag: "-Wl,--gc-sections"
+  }
+  linking_mode_flags { mode: DYNAMIC }
+}
+
+toolchain {
+  abi_version: "local"
+  abi_libc_version: "local"
+  builtin_sysroot: ""
+  compiler: "compiler"
+  host_system_name: "local"
+  needsPic: true
+  target_libc: "macosx"
+  target_cpu: "darwin"
+  target_system_name: "local"
+  toolchain_identifier: "local_darwin"
+
+  tool_path { name: "ar" path: "/usr/bin/libtool" }
+  tool_path { name: "compat-ld" path: "/usr/bin/ld" }
+  tool_path { name: "cpp" path: "/usr/bin/cpp" }
+  tool_path { name: "dwp" path: "/usr/bin/dwp" }
+  tool_path { name: "gcc" path: "osx_cc_wrapper.sh" }
+  cxx_flag: "-std=c++0x"
+  ar_flag: "-static"
+  ar_flag: "-s"
+  ar_flag: "-o"
+  linker_flag: "-lstdc++"
+  linker_flag: "-undefined"
+  linker_flag: "dynamic_lookup"
+  linker_flag: "-headerpad_max_install_names"
+  # TODO(ulfjack): This is wrong on so many levels. Figure out a way to auto-detect the proper
+  # setting from the local compiler, and also how to make incremental builds correct.
+  cxx_builtin_include_directory: "/"
+  tool_path { name: "gcov" path: "/usr/bin/gcov" }
+  tool_path { name: "ld" path: "/usr/bin/ld" }
+  tool_path { name: "nm" path: "/usr/bin/nm" }
+  tool_path { name: "objcopy" path: "/usr/bin/objcopy" }
+  objcopy_embed_flag: "-I"
+  objcopy_embed_flag: "binary"
+  tool_path { name: "objdump" path: "/usr/bin/objdump" }
+  tool_path { name: "strip" path: "/usr/bin/strip" }
+
+  # Anticipated future default.
+  unfiltered_cxx_flag: "-no-canonical-prefixes"
+
+  # Make C++ compilation deterministic. Use linkstamping instead of these
+  # compiler symbols.
+  unfiltered_cxx_flag: "-Wno-builtin-macro-redefined"
+  unfiltered_cxx_flag: "-D__DATE__=\"redacted\""
+  unfiltered_cxx_flag: "-D__TIMESTAMP__=\"redacted\""
+  unfiltered_cxx_flag: "-D__TIME__=\"redacted\""
+
+  # Security hardening on by default.
+  # Conservative choice; -D_FORTIFY_SOURCE=2 may be unsafe in some cases.
+  compiler_flag: "-D_FORTIFY_SOURCE=1"
+  compiler_flag: "-fstack-protector"
+
+  # Enable coloring even if there's no attached terminal. Bazel removes the
+  # escape sequences if --nocolor is specified.
+  compiler_flag: "-fcolor-diagnostics"
+
+  # All warnings are enabled. Maybe enable -Werror as well?
+  compiler_flag: "-Wall"
+  # Enable a few more warnings that aren't part of -Wall.
+  compiler_flag: "-Wthread-safety"
+  compiler_flag: "-Wself-assign"
+
+  # Keep stack frames for debugging, even in opt mode.
+  compiler_flag: "-fno-omit-frame-pointer"
+
+  # Anticipated future default.
+  linker_flag: "-no-canonical-prefixes"
+
+  compilation_mode_flags {
+    mode: DBG
+    # Enable debug symbols.
+    compiler_flag: "-g"
+  }
+  compilation_mode_flags {
+    mode: OPT
+    # No debug symbols.
+    # Maybe we should enable https://gcc.gnu.org/wiki/DebugFission for opt or even generally?
+    # However, that can't happen here, as it requires special handling in Bazel.
+    compiler_flag: "-g0"
+
+    # Conservative choice for -O
+    # -O3 can increase binary size and even slow down the resulting binaries.
+    # Profile first and / or use FDO if you need better performance than this.
+    compiler_flag: "-O2"
+
+    # Disable assertions
+    compiler_flag: "-DNDEBUG"
+
+    # Removal of unused code and data at link time (can this increase binary size in some cases?).
+    compiler_flag: "-ffunction-sections"
+    compiler_flag: "-fdata-sections"
+  }
+  linking_mode_flags { mode: DYNAMIC }
+}
+
+toolchain {
+  abi_version: "local"
+  abi_libc_version: "local"
+  builtin_sysroot: ""
+  compiler: "compiler"
+  host_system_name: "local"
+  needsPic: true
+  supports_gold_linker: false
+  supports_incremental_linker: false
+  supports_fission: false
+  supports_interface_shared_objects: false
+  supports_normalizing_ar: false
+  supports_start_end_lib: false
+  target_libc: "local"
+  target_cpu: "freebsd"
+  target_system_name: "local"
+  toolchain_identifier: "local_freebsd"
+
+  tool_path { name: "ar" path: "/usr/bin/ar" }
+  tool_path { name: "compat-ld" path: "/usr/bin/ld" }
+  tool_path { name: "cpp" path: "/usr/bin/cpp" }
+  tool_path { name: "dwp" path: "/usr/bin/dwp" }
+  tool_path { name: "gcc" path: "/usr/bin/clang" }
+  cxx_flag: "-std=c++0x"
+  linker_flag: "-lstdc++"
+  linker_flag: "-B/usr/bin/"
+
+  # TODO(bazel-team): In theory, the path here ought to exactly match the path
+  # used by gcc. That works because bazel currently doesn't track files at
+  # absolute locations and has no remote execution, yet. However, this will need
+  # to be fixed, maybe with auto-detection?
+  cxx_builtin_include_directory: "/usr/lib/clang"
+  cxx_builtin_include_directory: "/usr/local/include"
+  cxx_builtin_include_directory: "/usr/include"
+  tool_path { name: "gcov" path: "/usr/bin/gcov" }
+
+  # C(++) compiles invoke the compiler (as that is the one knowing where
+  # to find libraries), but we provide LD so other rules can invoke the linker.
+  tool_path { name: "ld" path: "/usr/bin/ld" }
+
+  tool_path { name: "nm" path: "/usr/bin/nm" }
+  tool_path { name: "objcopy" path: "/usr/bin/objcopy" }
+  objcopy_embed_flag: "-I"
+  objcopy_embed_flag: "binary"
+  tool_path { name: "objdump" path: "/usr/bin/objdump" }
+  tool_path { name: "strip" path: "/usr/bin/strip" }
+
+  # Anticipated future default.
+  unfiltered_cxx_flag: "-no-canonical-prefixes"
+
+  # Make C++ compilation deterministic. Use linkstamping instead of these
+  # compiler symbols.
+  unfiltered_cxx_flag: "-Wno-builtin-macro-redefined"
+  unfiltered_cxx_flag: "-D__DATE__=\"redacted\""
+  unfiltered_cxx_flag: "-D__TIMESTAMP__=\"redacted\""
+  unfiltered_cxx_flag: "-D__TIME__=\"redacted\""
+
+  # Security hardening on by default.
+  # Conservative choice; -D_FORTIFY_SOURCE=2 may be unsafe in some cases.
+  # We need to undef it before redefining it as some distributions now have
+  # it enabled by default.
+  compiler_flag: "-U_FORTIFY_SOURCE"
+  compiler_flag: "-D_FORTIFY_SOURCE=1"
+  compiler_flag: "-fstack-protector"
+  linker_flag: "-Wl,-z,relro,-z,now"
+
+  # Enable coloring even if there's no attached terminal. Bazel removes the
+  # escape sequences if --nocolor is specified. This isn't supported by gcc
+  # on Ubuntu 14.04.
+  # compiler_flag: "-fcolor-diagnostics"
+
+  # All warnings are enabled. Maybe enable -Werror as well?
+  compiler_flag: "-Wall"
+  # Enable a few more warnings that aren't part of -Wall.
+  #compiler_flag: "-Wunused-but-set-parameter"
+  # But disable some that are problematic.
+  #compiler_flag: "-Wno-free-nonheap-object" # has false positives
+
+  # Keep stack frames for debugging, even in opt mode.
+  compiler_flag: "-fno-omit-frame-pointer"
+
+  # Anticipated future default.
+  linker_flag: "-no-canonical-prefixes"
+  # Have gcc return the exit code from ld.
+  #linker_flag: "-pass-exit-codes"
+  # Stamp the binary with a unique identifier.
+  #linker_flag: "-Wl,--build-id=md5"
+  linker_flag: "-Wl,--hash-style=gnu"
+  # Gold linker only? Can we enable this by default?
+  # linker_flag: "-Wl,--warn-execstack"
+  # linker_flag: "-Wl,--detect-odr-violations"
+
+  compilation_mode_flags {
+    mode: DBG
+    # Enable debug symbols.
+    compiler_flag: "-g"
+  }
+  compilation_mode_flags {
+    mode: OPT
+
+    # No debug symbols.
+    # Maybe we should enable https://gcc.gnu.org/wiki/DebugFission for opt or
+    # even generally? However, that can't happen here, as it requires special
+    # handling in Bazel.
+    compiler_flag: "-g0"
+
+    # Conservative choice for -O
+    # -O3 can increase binary size and even slow down the resulting binaries.
+    # Profile first and / or use FDO if you need better performance than this.
+    compiler_flag: "-O2"
+
+    # Disable assertions
+    compiler_flag: "-DNDEBUG"
+
+    # Removal of unused code and data at link time (can this increase binary size in some cases?).
+    compiler_flag: "-ffunction-sections"
+    compiler_flag: "-fdata-sections"
+    linker_flag: "-Wl,--gc-sections"
+  }
+  linking_mode_flags { mode: DYNAMIC }
+}
+
+toolchain {
+  abi_version: "local"
+  abi_libc_version: "local"
+  builtin_sysroot: ""
+  compiler: "windows_mingw"
+  host_system_name: "local"
+  needsPic: false
+  target_libc: "local"
+  target_cpu: "x64_windows"
+  target_system_name: "local"
+  toolchain_identifier: "local_windows_mingw"
+
+  tool_path { name: "ar" path: "C:/mingw/bin/ar" }
+  tool_path { name: "compat-ld" path: "C:/mingw/bin/ld" }
+  tool_path { name: "cpp" path: "C:/mingw/bin/cpp" }
+  tool_path { name: "dwp" path: "C:/mingw/bin/dwp" }
+  tool_path { name: "gcc" path: "C:/mingw/bin/gcc" }
+  cxx_flag: "-std=c++0x"
+  # TODO(bazel-team): In theory, the path here ought to exactly match the path
+  # used by gcc. That works because bazel currently doesn't track files at
+  # absolute locations and has no remote execution, yet. However, this will need
+  # to be fixed, maybe with auto-detection?
+  cxx_builtin_include_directory: "C:/mingw/include"
+  cxx_builtin_include_directory: "C:/mingw/lib/gcc"
+  tool_path { name: "gcov" path: "C:/mingw/bin/gcov" }
+  tool_path { name: "ld" path: "C:/mingw/bin/ld" }
+  tool_path { name: "nm" path: "C:/mingw/bin/nm" }
+  tool_path { name: "objcopy" path: "C:/mingw/bin/objcopy" }
+  objcopy_embed_flag: "-I"
+  objcopy_embed_flag: "binary"
+  tool_path { name: "objdump" path: "C:/mingw/bin/objdump" }
+  tool_path { name: "strip" path: "C:/mingw/bin/strip" }
+  linking_mode_flags { mode: DYNAMIC }
+}
+
+toolchain {
+  abi_version: "local"
+  abi_libc_version: "local"
+  builtin_sysroot: ""
+  compiler: "windows_msys64_mingw64"
+  host_system_name: "local"
+  needsPic: false
+  target_libc: "local"
+  target_cpu: "x64_windows"
+  target_system_name: "local"
+  toolchain_identifier: "local_windows_msys64_mingw64"
+
+  tool_path { name: "ar" path: "C:/tools/msys64/mingw64/bin/ar" }
+  tool_path { name: "compat-ld" path: "C:/tools/msys64/mingw64/bin/ld" }
+  tool_path { name: "cpp" path: "C:/tools/msys64/mingw64/bin/cpp" }
+  tool_path { name: "dwp" path: "C:/tools/msys64/mingw64/bin/dwp" }
+  tool_path { name: "gcc" path: "C:/tools/msys64/mingw64/bin/gcc" }
+  cxx_flag: "-std=c++0x"
+  # TODO(bazel-team): In theory, the path here ought to exactly match the path
+  # used by gcc. That works because bazel currently doesn't track files at
+  # absolute locations and has no remote execution, yet. However, this will need
+  # to be fixed, maybe with auto-detection?
+  cxx_builtin_include_directory: "C:/tools/msys64/mingw64/x86_64-w64-mingw32/include"
+  tool_path { name: "gcov" path: "C:/tools/msys64/mingw64/bin/gcov" }
+  tool_path { name: "ld" path: "C:/tools/msys64/mingw64/bin/ld" }
+  tool_path { name: "nm" path: "C:/tools/msys64/mingw64/bin/nm" }
+  tool_path { name: "objcopy" path: "C:/tools/msys64/mingw64/bin/objcopy" }
+  objcopy_embed_flag: "-I"
+  objcopy_embed_flag: "binary"
+  tool_path { name: "objdump" path: "C:/tools/msys64/mingw64/bin/objdump" }
+  tool_path { name: "strip" path: "C:/tools/msys64/mingw64/bin/strip" }
+  linking_mode_flags { mode: DYNAMIC }
+}
+
+toolchain {
+  abi_version: "local"
+  abi_libc_version: "local"
+  builtin_sysroot: ""
+  compiler: "windows_clang"
+  host_system_name: "local"
+  needsPic: false
+  target_libc: "local"
+  target_cpu: "x64_windows"
+  target_system_name: "local"
+  toolchain_identifier: "local_windows_clang"
+
+  tool_path { name: "ar" path: "C:/mingw/bin/ar" }
+  tool_path { name: "compat-ld" path: "C:/Program Files (x86)/LLVM/bin/ld" }
+  tool_path { name: "cpp" path: "C:/Program Files (x86)/LLVM/bin/cpp" }
+  tool_path { name: "dwp" path: "C:/Program Files (x86)/LLVM/bin/dwp" }
+  tool_path { name: "gcc" path: "C:/Program Files (x86)/LLVM/bin/clang" }
+  cxx_flag: "-std=c++0x"
+  # TODO(bazel-team): In theory, the path here ought to exactly match the path
+  # used by gcc. That works because bazel currently doesn't track files at
+  # absolute locations and has no remote execution, yet. However, this will need
+  # to be fixed, maybe with auto-detection?
+  cxx_builtin_include_directory: "/usr/lib/gcc/"
+  cxx_builtin_include_directory: "/usr/local/include"
+  cxx_builtin_include_directory: "/usr/include"
+  tool_path { name: "gcov" path: "C:/Program Files (x86)/LLVM/bin/gcov" }
+  tool_path { name: "ld" path: "C:/Program Files (x86)/LLVM/bin/ld" }
+  tool_path { name: "nm" path: "C:/Program Files (x86)/LLVM/bin/nm" }
+  tool_path { name: "objcopy" path: "C:/Program Files (x86)/LLVM/bin/objcopy" }
+  objcopy_embed_flag: "-I"
+  objcopy_embed_flag: "binary"
+  tool_path { name: "objdump" path: "C:/Program Files (x86)/LLVM/bin/objdump" }
+  tool_path { name: "strip" path: "C:/Program Files (x86)/LLVM/bin/strip" }
+  linking_mode_flags { mode: DYNAMIC }
+}
+
+toolchain {
+   abi_version: "local"
+   abi_libc_version: "local"
+   builtin_sysroot: ""
+   compiler: "windows_msys64"
+   host_system_name: "local"
+   needsPic: false
+   target_libc: "local"
+   target_cpu: "x64_windows"
+   target_system_name: "local"
+   toolchain_identifier: "local_windows_msys64"
+
+   tool_path { name: "ar" path: "C:/tools/msys64/usr/bin/ar" }
+   tool_path { name: "compat-ld" path: "C:/tools/msys64/usr/bin/ld" }
+   tool_path { name: "cpp" path: "C:/tools/msys64/usr/bin/cpp" }
+   tool_path { name: "dwp" path: "C:/tools/msys64/usr/bin/dwp" }
+   # Use gcc instead of g++ so that C will compile correctly.
+   tool_path { name: "gcc" path: "C:/tools/msys64/usr/bin/gcc" }
+   cxx_flag: "-std=gnu++0x"
+   linker_flag: "-lstdc++"
+   # TODO(bazel-team): In theory, the path here ought to exactly match the path
+   # used by gcc. That works because bazel currently doesn't track files at
+   # absolute locations and has no remote execution, yet. However, this will need
+   # to be fixed, maybe with auto-detection?
+   cxx_builtin_include_directory: "C:/tools/msys64/"
+   cxx_builtin_include_directory: "/usr/"
+   tool_path { name: "gcov" path: "C:/tools/msys64/usr/bin/gcov" }
+   tool_path { name: "ld" path: "C:/tools/msys64/usr/bin/ld" }
+   tool_path { name: "nm" path: "C:/tools/msys64/usr/bin/nm" }
+   tool_path { name: "objcopy" path: "C:/tools/msys64/usr/bin/objcopy" }
+   objcopy_embed_flag: "-I"
+   objcopy_embed_flag: "binary"
+   tool_path { name: "objdump" path: "C:/tools/msys64/usr/bin/objdump" }
+   tool_path { name: "strip" path: "C:/tools/msys64/usr/bin/strip" }
+   linking_mode_flags { mode: DYNAMIC }
+}
+
+toolchain {
+  toolchain_identifier: "vc_14_0_x64"
+  host_system_name: "local"
+  target_system_name: "local"
+
+  abi_version: "local"
+  abi_libc_version: "local"
+  target_cpu: "x64_windows_msvc"
+  compiler: "cl"
+  target_libc: "msvcrt140"
+  default_python_version: "python2.7"
+  cxx_builtin_include_directory: "C:/Program Files (x86)/Microsoft Visual Studio 14.0/VC/INCLUDE"
+  cxx_builtin_include_directory: "C:/Program Files (x86)/Windows Kits/10/include/"
+  cxx_builtin_include_directory: "C:/Program Files (x86)/Windows Kits/8.1/include/"
+  cxx_builtin_include_directory: "C:/Program Files (x86)/GnuWin32/include/"
+  cxx_builtin_include_directory: "C:/python_27_amd64/files/include"
+  tool_path {
+    name: "ar"
+    path: "wrapper/bin/msvc_link.bat"
+  }
+  tool_path {
+    name: "cpp"
+    path: "wrapper/bin/msvc_cl.bat"
+  }
+  tool_path {
+    name: "gcc"
+    path: "wrapper/bin/msvc_cl.bat"
+  }
+  tool_path {
+    name: "gcov"
+    path: "wrapper/bin/msvc_nop.bat"
+  }
+  tool_path {
+    name: "ld"
+    path: "wrapper/bin/msvc_link.bat"
+  }
+  tool_path {
+    name: "nm"
+    path: "wrapper/bin/msvc_nop.bat"
+  }
+  tool_path {
+    name: "objcopy"
+    path: "wrapper/bin/msvc_nop.bat"
+  }
+  tool_path {
+    name: "objdump"
+    path: "wrapper/bin/msvc_nop.bat"
+  }
+  tool_path {
+    name: "strip"
+    path: "wrapper/bin/msvc_nop.bat"
+  }
+  supports_gold_linker: false
+  supports_start_end_lib: false
+  supports_interface_shared_objects: false
+  supports_incremental_linker: false
+  supports_normalizing_ar: true
+  needsPic: false
+
+  compiler_flag: "-m64"
+  compiler_flag: "/D__inline__=__inline"
+  # TODO(pcloudy): Review those flags below, they should be defined by cl.exe
+  compiler_flag: "/DOS_WINDOWS=OS_WINDOWS"
+  compiler_flag: "/DCOMPILER_MSVC"
+
+  # Don't pollute with GDI macros in windows.h.
+  compiler_flag: "/DNOGDI"
+  # Don't define min/max macros in windows.h.
+  compiler_flag: "/DNOMINMAX"
+  compiler_flag: "/DPRAGMA_SUPPORTED"
+  # Platform defines.
+  compiler_flag: "/D_WIN32_WINNT=0x0600"
+  # Turn off warning messages.
+  compiler_flag: "/D_CRT_SECURE_NO_DEPRECATE"
+  compiler_flag: "/D_CRT_SECURE_NO_WARNINGS"
+  compiler_flag: "/D_SILENCE_STDEXT_HASH_DEPRECATION_WARNINGS"
+  # Use math constants (M_PI, etc.) from the math library
+  compiler_flag: "/D_USE_MATH_DEFINES"
+
+  # Useful options to have on for compilation.
+  # Suppress startup banner.
+  compiler_flag: "/nologo"
+  # Increase the capacity of object files to 2^32 sections.
+  compiler_flag: "/bigobj"
+  # Allocate 500MB for precomputed headers.
+  compiler_flag: "/Zm500"
+  # Use unsigned char by default.
+  compiler_flag: "/J"
+  # Use function level linking.
+  compiler_flag: "/Gy"
+  # Use string pooling.
+  compiler_flag: "/GF"
+  # Warning level 3 (could possibly go to 4 in the future).
+  compiler_flag: "/W3"
+  # Catch both asynchronous (structured) and synchronous (C++) exceptions.
+  compiler_flag: "/EHsc"
+
+  # Globally disabled warnings.
+  # Don't warn about elements of array being be default initialized.
+  compiler_flag: "/wd4351"
+  # Don't warn about no matching delete found.
+  compiler_flag: "/wd4291"
+  # Don't warn about diamond inheritance patterns.
+  compiler_flag: "/wd4250"
+  # Don't warn about insecure functions (e.g. non _s functions).
+  compiler_flag: "/wd4996"
+
+  linker_flag: "-m64"
+
+  feature {
+    name: 'include_paths'
+    flag_set {
+      action: 'preprocess-assemble'
+      action: 'c-compile'
+      action: 'c++-compile'
+      action: 'c++-header-parsing'
+      action: 'c++-header-preprocessing'
+      action: 'c++-module-compile'
+      flag_group {
+        flag: '/I%{quote_include_paths}'
+      }
+      flag_group {
+        flag: '/I%{include_paths}'
+      }
+      flag_group {
+        flag: '/I%{system_include_paths}'
+      }
+    }
+  }
+
+  feature {
+    name: 'dependency_file'
+    flag_set {
+      action: 'assemble'
+      action: 'preprocess-assemble'
+      action: 'c-compile'
+      action: 'c++-compile'
+      action: 'c++-module-compile'
+      action: 'c++-header-preprocessing'
+      action: 'c++-header-parsing'
+      expand_if_all_available: 'dependency_file'
+      flag_group {
+        flag: '/DEPENDENCY_FILE'
+        flag: '%{dependency_file}'
+      }
+    }
+  }
+
+  # Stop passing -frandom-seed option
+  feature {
+    name: 'random_seed'
+  }
+
+  # This feature is just for enabling flag_set in action_config for -c and -o options during the transitional period
+  feature {
+    name: 'compile_action_flags_in_flag_set'
+  }
+
+  action_config {
+    config_name: 'c-compile'
+    action_name: 'c-compile'
+    tool {
+      tool_path: 'wrapper/bin/msvc_cl.bat'
+    }
+    flag_set {
+      flag_group {
+        flag: '/c'
+        flag: '%{source_file}'
+      }
+    }
+    flag_set {
+      expand_if_all_available: 'output_object_file'
+      flag_group {
+        flag: '/Fo%{output_object_file}'
+      }
+    }
+    flag_set {
+      expand_if_all_available: 'output_assembly_file'
+      flag_group {
+        flag: '/Fa%{output_assembly_file}'
+      }
+    }
+    flag_set {
+      expand_if_all_available: 'output_preprocess_file'
+      flag_group {
+        flag: '/P'
+        flag: '/Fi%{output_preprocess_file}'
+      }
+    }
+  }
+
+  action_config {
+    config_name: 'c++-compile'
+    action_name: 'c++-compile'
+    tool {
+      tool_path: 'wrapper/bin/msvc_cl.bat'
+    }
+    flag_set {
+      flag_group {
+        flag: '/c'
+        flag: '%{source_file}'
+      }
+    }
+    flag_set {
+      expand_if_all_available: 'output_object_file'
+      flag_group {
+        flag: '/Fo%{output_object_file}'
+      }
+    }
+    flag_set {
+      expand_if_all_available: 'output_assembly_file'
+      flag_group {
+        flag: '/Fa%{output_assembly_file}'
+      }
+    }
+    flag_set {
+      expand_if_all_available: 'output_preprocess_file'
+      flag_group {
+        flag: '/P'
+        flag: '/Fi%{output_preprocess_file}'
+      }
+    }
+  }
+
+  compilation_mode_flags {
+    mode: DBG
+    compiler_flag: "/DDEBUG=1"
+    # This will signal the wrapper that we are doing a debug build, which sets
+    # some internal state of the toolchain wrapper. It is intentionally a "-"
+    # flag to make this very obvious.
+    compiler_flag: "-g"
+    compiler_flag: "/Od"
+    compiler_flag: "-Xcompilation-mode=dbg"
+  }
+
+  compilation_mode_flags {
+    mode: FASTBUILD
+    compiler_flag: "/DNDEBUG"
+    compiler_flag: "/Od"
+    compiler_flag: "-Xcompilation-mode=fastbuild"
+  }
+
+  compilation_mode_flags {
+    mode: OPT
+    compiler_flag: "/DNDEBUG"
+    compiler_flag: "/O2"
+    compiler_flag: "-Xcompilation-mode=opt"
+  }
+}
diff --git a/third_party/toolchains/cpus/arm/arm_compiler_configure.bzl b/third_party/toolchains/cpus/arm/arm_compiler_configure.bzl
new file mode 100644
index 00000000000..5eb3b7bb1c6
--- /dev/null
+++ b/third_party/toolchains/cpus/arm/arm_compiler_configure.bzl
@@ -0,0 +1,27 @@
+# -*- Python -*-
+"""Repository rule for arm compiler autoconfiguration."""
+
+def _tpl(repository_ctx, tpl, substitutions={}, out=None):
+  if not out:
+    out = tpl
+  repository_ctx.template(
+      out,
+      Label("//third_party/toolchains/cpus/arm:%s.tpl" % tpl),
+      substitutions)
+
+
+def _arm_compiler_configure_impl(repository_ctx):
+  _tpl(repository_ctx, "CROSSTOOL", {
+      "%{ARM_COMPILER_PATH}%": str(repository_ctx.path(
+          repository_ctx.attr.remote_config_repo)),
+  })
+  repository_ctx.symlink(repository_ctx.attr.build_file, "BUILD")
+
+
+arm_compiler_configure = repository_rule(
+    implementation = _arm_compiler_configure_impl,
+    attrs = {
+        "remote_config_repo": attr.string(mandatory = False, default =""),
+        "build_file": attr.label(),
+    },
+)
diff --git a/third_party/toolchains/cpus/arm/build_raspberry_pi.sh b/third_party/toolchains/cpus/arm/build_raspberry_pi.sh
new file mode 100755
index 00000000000..a5ad0fce0e4
--- /dev/null
+++ b/third_party/toolchains/cpus/arm/build_raspberry_pi.sh
@@ -0,0 +1,58 @@
+#!/usr/bin/env bash
+set -e
+
+# By default this builds packages for the Pi Two and Three only, since the NEON support
+# this allows makes calculations many times faster. To support the Pi One or Zero, pass
+# PI_ONE as the first argument to the script, for example:
+# third_party/toolchains/cpus/arm/build_raspberry_pi.sh PI_ONE
+#
+# To install the cross-compilation support for Python this script needs on Ubuntu Trusty, run
+# something like these steps, after backing up your original /etc/apt/sources.list file:
+#
+# dpkg --add-architecture armhf
+# echo 'deb [arch=armhf] http://ports.ubuntu.com/ trusty main restricted universe multiverse' >> /etc/apt/sources.list.d/armhf.list
+# echo 'deb [arch=armhf] http://ports.ubuntu.com/ trusty-updates main restricted universe multiverse' >> /etc/apt/sources.list.d/armhf.list
+# echo 'deb [arch=armhf] http://ports.ubuntu.com/ trusty-security main restricted universe multiverse' >> /etc/apt/sources.list.d/armhf.list
+# echo 'deb [arch=armhf] http://ports.ubuntu.com/ trusty-backports main restricted universe multiverse' >> /etc/apt/sources.list.d/armhf.list
+# sed -i 's#deb http://archive.ubuntu.com/ubuntu/#deb [arch=amd64] http://archive.ubuntu.com/ubuntu/#g' /etc/apt/sources.list
+# apt-get update
+# apt-get install -y libpython-all-dev:armhf
+#
+# Make sure you have an up to date version of the Bazel build tool installed too.
+
+yes '' | ./configure
+
+if [[ $1 == "PI_ONE" ]]; then
+  PI_COPTS="--copt=-march=armv6 --copt=-mfpu=vfp"
+  echo "Building for the Pi One/Zero, with no NEON support"
+else
+  PI_COPTS='--copt=-march=armv7-a --copt=-mfpu=neon-vfpv4
+  --copt=-U__GCC_HAVE_SYNC_COMPARE_AND_SWAP_1
+  --copt=-U__GCC_HAVE_SYNC_COMPARE_AND_SWAP_2
+  --copt=-U__GCC_HAVE_SYNC_COMPARE_AND_SWAP_8'
+  echo "Building for the Pi Two/Three, with NEON acceleration"
+fi
+
+bazel build -c opt ${PI_COPTS} \
+  --copt=-funsafe-math-optimizations --copt=-ftree-vectorize \
+  --copt=-fomit-frame-pointer --cpu=armeabi \
+  --crosstool_top=@local_config_arm_compiler//:toolchain \
+  --verbose_failures \
+  //tensorflow/tools/benchmark:benchmark_model \
+  //tensorflow/tools/pip_package:build_pip_package
+
+TMPDIR=$(mktemp -d -t tmp.XXXXXXXXXX)
+echo "Final outputs will go to ${TMPDIR}"
+
+# Build a universal wheel.
+BDIST_OPTS="--universal" \
+  bazel-bin/tensorflow/tools/pip_package/build_pip_package "${TMPDIR}"
+
+OLD_FN=$(ls "${TMPDIR}" | grep \.whl)
+SUB='s/tensorflow-([^-]+)-([^-]+)-.*/tensorflow-\1-\2-none-any.whl/; print'
+NEW_FN=$(echo "${OLD_FN}" | perl -ne "${SUB}")
+mv "${TMPDIR}/${OLD_FN}" "${TMPDIR}/${NEW_FN}"
+cp bazel-bin/tensorflow/tools/benchmark/benchmark_model "${TMPDIR}"
+
+echo "Output can be found here:"
+find "${TMPDIR}"