diff --git a/.github/workflows/ios.yml b/.github/workflows/ios.yml
new file mode 100644
index 000000000..4dfa8905d
--- /dev/null
+++ b/.github/workflows/ios.yml
@@ -0,0 +1,43 @@
+name: iOS
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build-macos:
+    name: iOS CPU-only
+    runs-on: macos-12
+
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v2
+      with:
+        submodules: recursive
+
+    - name: Install dependencies
+      run: brew install boost openblas openssl protobuf
+
+    - name: Configure CMake
+      run: |
+        export LDFLAGS="-L/usr/local/opt/openblas/lib"
+        export CPPFLAGS="-I/usr/local/opt/openblas/include"
+        mkdir -p build
+        cd build
+        cmake .. \
+          -DCOMPILE_CPU=on \
+          -DCOMPILE_CUDA=off \
+          -DCOMPILE_EXAMPLES=on \
+          -DCOMPILE_SERVER=off \
+          -DCOMPILE_TESTS=on \
+          -DUSE_SENTENCEPIECE=on \
+          -DCMAKE_TOOLCHAIN_FILE=../cmake/ios.toolchain.cmake \
+          -DUSE_SENTENCEPIECE=on \
+          -DPLATFORM=OS64 \
+          -DDEPLOYMENT_TARGET=13.0
+
+    - name: Compile
+      working-directory: build
+      run: cmake --build . --config Release
\ No newline at end of file
diff --git a/.gitmodules b/.gitmodules
index a1a876d8b..37b125076 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -20,3 +20,9 @@
 [submodule "src/3rd_party/simple-websocket-server"]
 	path = src/3rd_party/simple-websocket-server
 	url = https://github.com/marian-nmt/Simple-WebSocket-Server
+[submodule "src/3rd_party/ruy"]
+	path = src/3rd_party/ruy
+	url = https://github.com/google/ruy.git
+[submodule "src/3rd_party/simd_utils"]
+	path = src/3rd_party/simd_utils
+	url = https://github.com/JishinMaster/simd_utils.git
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9ff5e2c07..ab1c32723 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -6,6 +6,7 @@ if (POLICY CMP0074)
 endif ()
 
 project(marian CXX C)
+
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(BUILD_ARCH native CACHE STRING "Compile for this CPU architecture.")
@@ -80,6 +81,40 @@ if(NOT CMAKE_BUILD_TYPE)
   set(CMAKE_BUILD_TYPE "Release")
 endif()
 
+# iOS support
+if(CMAKE_SYSTEM_NAME STREQUAL "iOS" )
+  set(ARM ON)
+  # need to ignore this warning for Xcode to be happy
+  list(APPEND ALL_WARNINGS -Wno-shorten-64-to-32;)
+endif()
+
+# ARM support: currently ONLY armv8. armv8 includes NEON by default
+# we do not currently have good support for automatic architecture detection, including for cross-compilation
+# this is planned for future PRs
+if(ARM)
+
+  # Apple by default has Apple Accelerate. Otherwise fallback to RUY for GEMM
+  if(APPLE)
+    message(STATUS "Using Apple Accelerate SGEMM")
+    option(USE_RUY_SGEMM "Compile with Ruy SGEMM" OFF)
+  else(APPLE)
+    message(STATUS "Using Ruy SGEMM")
+    set(EXT_LIBS ${EXT_LIBS} ruy)
+    option(USE_RUY_SGEMM "Compile with Ruy SGEMM" ON)
+  endif(APPLE)
+
+  # Define that we are using ARM as required by simd_utils. See their README for info
+  add_compile_definitions(ARM FMA SSE)
+  # Some warnings as errors. I don't feel comfortable about the strict aliasing.
+  set(ARM_WARNINGS "-fno-strict-aliasing -Wno-comment")
+
+  if(MSVC)
+    add_compile_options(/flax-vector-conversions)
+  else(MSVC)
+    add_compile_options(-flax-vector-conversions)
+  endif(MSVC)
+endif(ARM)
+
 ########
 # pThreads: consider it as EXT_LIBS for a more portable binary
 set(CMAKE_THREAD_PREFER_PTHREAD TRUE)
@@ -88,7 +123,6 @@ find_package(Threads REQUIRED)
 set(EXT_LIBS ${EXT_LIBS} Threads::Threads)
 ########
 
-
 ###############################################################################
 # Set compilation flags
 if(MSVC)
@@ -148,13 +182,16 @@ else(MSVC)
   set(INTRINSICS "")
   list(APPEND INTRINSICS_NVCC)
 
-  option(COMPILE_SSE2   "Compile CPU code with SSE2 support"   ON)
-  option(COMPILE_SSE3   "Compile CPU code with SSE3 support"   ON)
-  option(COMPILE_SSE4_1 "Compile CPU code with SSE4.1 support" ON)
-  option(COMPILE_SSE4_2 "Compile CPU code with SSE4.2 support" ON)
-  option(COMPILE_AVX    "Compile CPU code with AVX support"    ON)
-  option(COMPILE_AVX2   "Compile CPU code with AVX2 support"   ON)
-  option(COMPILE_AVX512 "Compile CPU code with AVX512 support" ON)
+  if(NOT ARM)
+    # none of these options are available on ARM
+    option(COMPILE_SSE2   "Compile CPU code with SSE2 support"   ON)
+    option(COMPILE_SSE3   "Compile CPU code with SSE3 support"   ON)
+    option(COMPILE_SSE4_1 "Compile CPU code with SSE4.1 support" ON)
+    option(COMPILE_SSE4_2 "Compile CPU code with SSE4.2 support" ON)
+    option(COMPILE_AVX    "Compile CPU code with AVX support"    ON)
+    option(COMPILE_AVX2   "Compile CPU code with AVX2 support"   ON)
+    option(COMPILE_AVX512 "Compile CPU code with AVX512 support" ON)
+  endif(NOT ARM)
 
   if(BUILD_ARCH STREQUAL "native")
     message(STATUS "Building with -march=native and intrinsics will be chosen automatically by the compiler to match the current machine.")
@@ -230,7 +267,7 @@ else(MSVC)
     # Clang-10.0.0 complains when CUDA is newer than 10.1
     set(CLANG_IGNORE_UNKNOWN_CUDA "-Wno-unknown-warning-option -Wno-unknown-cuda-version")
   endif()
-  set(DISABLE_GLOBALLY "-Wno-unused-result ${CLANG_IGNORE_UNKNOWN_CUDA}")
+  set(DISABLE_GLOBALLY "-Wno-unused-result ${CLANG_IGNORE_UNKNOWN_CUDA} ${ARM_WARNINGS}")
 
   # These are used in src/CMakeLists.txt on a per-target basis
   list(APPEND ALL_WARNINGS -Wall; -Werror; -Wextra; -Wno-unused-result; -Wno-deprecated;
@@ -249,24 +286,30 @@ else(MSVC)
     set(CMAKE_RDYNAMIC_FLAG "-rdynamic")
   endif(CMAKE_COMPILER_IS_GNUCC)
 
-  set(CMAKE_CXX_FLAGS                 "-std=c++11 -pthread ${CMAKE_GCC_FLAGS} -fPIC ${DISABLE_GLOBALLY} -march=${BUILD_ARCH} ${INTRINSICS}")
-  set(CMAKE_CXX_FLAGS_RELEASE         "-O3 -m64 -funroll-loops -g ${CMAKE_RDYNAMIC_FLAG}")
+  set(CMAKE_CXX_FLAGS                 "-std=c++11 -pthread ${CMAKE_GCC_FLAGS} -fPIC ${DISABLE_GLOBALLY} ${INTRINSICS}")
+  set(CMAKE_CXX_FLAGS_RELEASE         "-O3 -funroll-loops -g ${CMAKE_RDYNAMIC_FLAG}")
   set(CMAKE_CXX_FLAGS_DEBUG           "-O0 -g ${CMAKE_RDYNAMIC_FLAG}")
-  set(CMAKE_CXX_FLAGS_SLIM            "-O3 -m64 -funroll-loops -DNDEBUG")
+  set(CMAKE_CXX_FLAGS_SLIM            "-O3 -funroll-loops -DNDEBUG")
   set(CMAKE_CXX_FLAGS_RELWITHDEBINFO  "${CMAKE_CXX_FLAGS_RELEASE}")
   set(CMAKE_CXX_FLAGS_PROFILE         "${CMAKE_CXX_FLAGS_RELEASE} -pg")
   set(CMAKE_CXX_FLAGS_PROFGEN         "${CMAKE_CXX_FLAGS_RELEASE} -fprofile-generate -fprofile-correction")
   set(CMAKE_CXX_FLAGS_PROFUSE         "${CMAKE_CXX_FLAGS_RELEASE} -fprofile-use -fprofile-correction")
 
   # these need to be set separately
-  set(CMAKE_C_FLAGS                 "-pthread ${CMAKE_GCC_FLAGS} -fPIC ${DISABLE_GLOBALLY} -march=${BUILD_ARCH} ${INTRINSICS}")
-  set(CMAKE_C_FLAGS_RELEASE         "-O3 -m64 -funroll-loops -g ${CMAKE_RDYNAMIC_FLAG}")
+  set(CMAKE_C_FLAGS                 "-pthread ${CMAKE_GCC_FLAGS} -fPIC ${DISABLE_GLOBALLY} ${INTRINSICS}")
+  set(CMAKE_C_FLAGS_RELEASE         "-O3 -funroll-loops -g ${CMAKE_RDYNAMIC_FLAG}")
   set(CMAKE_C_FLAGS_DEBUG           "-O0 -g ${CMAKE_RDYNAMIC_FLAG}")
-  set(CMAKE_C_FLAGS_SLIM            "-O3 -m64 -funroll-loops -DNDEBUG")
+  set(CMAKE_C_FLAGS_SLIM            "-O3 -funroll-loops -DNDEBUG")
   set(CMAKE_C_FLAGS_RELWITHDEBINFO  "${CMAKE_C_FLAGS_RELEASE}")
   set(CMAKE_C_FLAGS_PROFILE         "${CMAKE_C_FLAGS_RELEASE} -pg")
   set(CMAKE_C_FLAGS_PROFGEN         "${CMAKE_C_FLAGS_RELEASE} -fprofile-generate -fprofile-correction")
   set(CMAKE_C_FLAGS_PROFUSE         "${CMAKE_C_FLAGS_RELEASE} -fprofile-use -fprofile-correction")
+
+  # set -march for all builds except iOS cross compilation
+  if(NOT CMAKE_SYSTEM_NAME STREQUAL "iOS" )
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -march=${BUILD_ARCH}")
+    set(CMAKE_C_FLAGS   "${CMAKE_C_FLAGS} -march=${BUILD_ARCH}")
+  endif()
 endif(MSVC)
 
 # with gcc 7.0 and above we need to mark fallthrough in switch case statements
@@ -520,7 +563,7 @@ endif()
 ###############################################################################
 # Find BLAS library
 if(COMPILE_CPU)
-  if(NOT GENERATE_MARIAN_INSTALL_TARGETS)
+  if(NOT GENERATE_MARIAN_INSTALL_TARGETS AND NOT ARM)
     set(EXT_LIBS ${EXT_LIBS} intgemm) # Enable intgemm when compiling CPU
     add_definitions(-DCOMPILE_CPU=1)
   endif()
diff --git a/cmake/ios.toolchain.cmake b/cmake/ios.toolchain.cmake
new file mode 100644
index 000000000..2131172fd
--- /dev/null
+++ b/cmake/ios.toolchain.cmake
@@ -0,0 +1,1099 @@
+# This file is part of the ios-cmake project. It was retrieved from
+# https://github.com/leetal/ios-cmake.git, which is a fork of
+# https://github.com/gerstrong/ios-cmake.git, which is a fork of
+# https://github.com/cristeab/ios-cmake.git, which is a fork of
+# https://code.google.com/p/ios-cmake/. Which in turn is based off of
+# the Platform/Darwin.cmake and Platform/UnixPaths.cmake files which
+# are included with CMake 2.8.4
+#
+# The ios-cmake project is licensed under the new BSD license.
+#
+# Copyright (c) 2014, Bogdan Cristea and LTE Engineering Software,
+# Kitware, Inc., Insight Software Consortium.  All rights reserved.
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#
+# 2. Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution.
+#
+# 3. Neither the name of the copyright holder nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+# This file is based on the Platform/Darwin.cmake and
+# Platform/UnixPaths.cmake files which are included with CMake 2.8.4
+# It has been altered for iOS development.
+#
+# Updated by Alex Stewart (alexs.mac@gmail.com)
+#
+# *****************************************************************************
+#      Now maintained by Alexander Widerberg (widerbergaren [at] gmail.com)
+#                      under the BSD-3-Clause license
+#                   https://github.com/leetal/ios-cmake
+# *****************************************************************************
+#
+#                           INFORMATION / HELP
+#
+###############################################################################
+#                                  OPTIONS                                    #
+###############################################################################
+#
+# PLATFORM: (default "OS64")
+#    OS = Build for iPhoneOS.
+#    OS64 = Build for arm64 iphoneOS.
+#    OS64COMBINED = Build for arm64 x86_64 iphoneOS + iphoneOS Simulator. Combined into FAT STATIC lib (only supported on 3.14+ of CMake with "-G Xcode" argument in combination with the "cmake --install" CMake build step)
+#    SIMULATOR = Build for x86 i386 iphoneOS Simulator.
+#    SIMULATOR64 = Build for x86_64 iphoneOS Simulator.
+#    SIMULATORARM64 = Build for arm64 iphoneOS Simulator.
+#    SIMULATOR64COMBINED = Build for arm64 x86_64 iphoneOS Simulator. Combined into FAT STATIC lib (supported on 3.14+ of CMakewith "-G Xcode" argument ONLY)
+#    TVOS = Build for arm64 tvOS.
+#    TVOSCOMBINED = Build for arm64 x86_64 tvOS + tvOS Simulator. Combined into FAT STATIC lib (only supported on 3.14+ of CMake with "-G Xcode" argument in combination with the "cmake --install" CMake build step)
+#    SIMULATOR_TVOS = Build for x86_64 tvOS Simulator.
+#    SIMULATORARM64_TVOS = Build for arm64 tvOS Simulator.
+#    WATCHOS = Build for armv7k arm64_32 for watchOS.
+#    WATCHOSCOMBINED = Build for armv7k arm64_32 x86_64 watchOS + watchOS Simulator. Combined into FAT STATIC lib (only supported on 3.14+ of CMake with "-G Xcode" argument in combination with the "cmake --install" CMake build step)
+#    SIMULATOR_WATCHOS = Build for x86_64 for watchOS Simulator.
+#    MAC = Build for x86_64 macOS.
+#    MAC_ARM64 = Build for Apple Silicon macOS.
+#    MAC_UNIVERSAL = Combined build for x86_64 and Apple Silicon on macOS.
+#    MAC_CATALYST = Build for x86_64 macOS with Catalyst support (iOS toolchain on macOS).
+#                   Note: The build argument "MACOSX_DEPLOYMENT_TARGET" can be used to control min-version of macOS
+#    MAC_CATALYST_ARM64 = Build for Apple Silicon macOS with Catalyst support (iOS toolchain on macOS).
+#                         Note: The build argument "MACOSX_DEPLOYMENT_TARGET" can be used to control min-version of macOS
+#
+# CMAKE_OSX_SYSROOT: Path to the SDK to use.  By default this is
+#    automatically determined from PLATFORM and xcodebuild, but
+#    can also be manually specified (although this should not be required).
+#
+# CMAKE_DEVELOPER_ROOT: Path to the Developer directory for the platform
+#    being compiled for.  By default, this is automatically determined from
+#    CMAKE_OSX_SYSROOT, but can also be manually specified (although this should
+#    not be required).
+#
+# DEPLOYMENT_TARGET: Minimum SDK version to target. Default 2.0 on watchOS and 9.0 on tvOS+iOS
+#
+# NAMED_LANGUAGE_SUPPORT:
+#    ON (default) = Will require "enable_language(OBJC) and/or enable_language(OBJCXX)" for full OBJC|OBJCXX support
+#    OFF = Will embed the OBJC and OBJCXX flags into the CMAKE_C_FLAGS and CMAKE_CXX_FLAGS (legacy behavior, CMake version < 3.16)
+#
+# ENABLE_BITCODE: (ON|OFF) Enables or disables bitcode support. Default OFF
+#
+# ENABLE_ARC: (ON|OFF) Enables or disables ARC support. Default ON (ARC enabled by default)
+#
+# ENABLE_VISIBILITY: (ON|OFF) Enables or disables symbol visibility support. Default OFF (visibility hidden by default)
+#
+# ENABLE_STRICT_TRY_COMPILE: (ON|OFF) Enables or disables strict try_compile() on all Check* directives (will run linker
+#    to actually check if linking is possible). Default OFF (will set CMAKE_TRY_COMPILE_TARGET_TYPE to STATIC_LIBRARY)
+#
+# ARCHS: (armv7 armv7s armv7k arm64 arm64_32 i386 x86_64) If specified, will override the default architectures for the given PLATFORM
+#    OS = armv7 armv7s arm64 (if applicable)
+#    OS64 = arm64 (if applicable)
+#    SIMULATOR = i386
+#    SIMULATOR64 = x86_64
+#    SIMULATORARM64 = arm64
+#    TVOS = arm64
+#    SIMULATOR_TVOS = x86_64 (i386 has since long been deprecated)
+#    SIMULATORARM64_TVOS = arm64
+#    WATCHOS = armv7k arm64_32 (if applicable)
+#    SIMULATOR_WATCHOS = x86_64 (i386 has since long been deprecated)
+#    MAC = x86_64
+#    MAC_ARM64 = arm64
+#    MAC_UNIVERSAL = x86_64 arm64
+#    MAC_CATALYST = x86_64
+#    MAC_CATALYST_ARM64 = arm64
+#
+# NOTE: When manually specifying ARCHS, put a semi-colon between the entries. E.g., -DARCHS="armv7;arm64"
+#
+###############################################################################
+#                                END OPTIONS                                  #
+###############################################################################
+#
+# This toolchain defines the following properties (available via get_property()) for use externally:
+#
+# PLATFORM: The currently targeted platform.
+# XCODE_VERSION: Version number (not including Build version) of Xcode detected.
+# SDK_VERSION: Version of SDK being used.
+# OSX_ARCHITECTURES: Architectures being compiled for (generated from PLATFORM).
+# APPLE_TARGET_TRIPLE: Used by autoconf build systems. NOTE: If "ARCHS" is overridden, this will *NOT* be set!
+#
+# This toolchain defines the following macros for use externally:
+#
+# set_xcode_property (TARGET XCODE_PROPERTY XCODE_VALUE XCODE_VARIANT)
+#   A convenience macro for setting xcode specific properties on targets.
+#   Available variants are: All, Release, RelWithDebInfo, Debug, MinSizeRel
+#   example: set_xcode_property (myioslib IPHONEOS_DEPLOYMENT_TARGET "3.1" "all").
+#
+# find_host_package (PROGRAM ARGS)
+#   A macro used to find executable programs on the host system, not within the
+#   environment. Thanks to the android-cmake project for providing the
+#   command.
+#
+
+cmake_minimum_required(VERSION 3.8.0)
+
+# CMake invokes the toolchain file twice during the first build, but only once during subsequent rebuilds.
+if(DEFINED ENV{_IOS_TOOLCHAIN_HAS_RUN})
+  return()
+endif()
+set(ENV{_IOS_TOOLCHAIN_HAS_RUN} true)
+
+# List of supported platform values
+list(APPEND _supported_platforms
+        "OS" "OS64" "OS64COMBINED" "SIMULATOR" "SIMULATOR64" "SIMULATORARM64" "SIMULATOR64COMBINED"
+        "TVOS" "TVOSCOMBINED" "SIMULATOR_TVOS" "SIMULATORARM64_TVOS"
+        "WATCHOS" "WATCHOSCOMBINED" "SIMULATOR_WATCHOS"
+        "MAC" "MAC_ARM64" "MAC_UNIVERSAL"
+        "VISIONOS" "SIMULATOR_VISIONOS" "SIMULATOR64_VISIONOS"
+        "MAC_CATALYST" "MAC_CATALYST_ARM64")
+
+# Cache what generator is used
+set(USED_CMAKE_GENERATOR "${CMAKE_GENERATOR}")
+
+# Check if using a CMake version capable of building combined FAT builds (simulator and target slices combined in one static lib)
+if(${CMAKE_VERSION} VERSION_GREATER_EQUAL "3.14")
+  set(MODERN_CMAKE YES)
+endif()
+
+# Get the Xcode version being used.
+# Problem: CMake runs toolchain files multiple times, but can't read cache variables on some runs.
+# Workaround: On the first run (in which cache variables are always accessible), set an intermediary environment variable.
+#
+# NOTE: This pattern is used in many places in this toolchain to speed up checks of all sorts
+if(DEFINED XCODE_VERSION_INT)
+  # Environment variables are always preserved.
+  set(ENV{_XCODE_VERSION_INT} "${XCODE_VERSION_INT}")
+elseif(DEFINED ENV{_XCODE_VERSION_INT})
+  set(XCODE_VERSION_INT "$ENV{_XCODE_VERSION_INT}")
+elseif(NOT DEFINED XCODE_VERSION_INT)
+  find_program(XCODEBUILD_EXECUTABLE xcodebuild)
+  if(NOT XCODEBUILD_EXECUTABLE)
+    message(FATAL_ERROR "xcodebuild not found. Please install either the standalone commandline tools or Xcode.")
+  endif()
+  execute_process(COMMAND ${XCODEBUILD_EXECUTABLE} -version
+          OUTPUT_VARIABLE XCODE_VERSION_INT
+          ERROR_QUIET
+          OUTPUT_STRIP_TRAILING_WHITESPACE)
+  string(REGEX MATCH "Xcode [0-9\\.]+" XCODE_VERSION_INT "${XCODE_VERSION_INT}")
+  string(REGEX REPLACE "Xcode ([0-9\\.]+)" "\\1" XCODE_VERSION_INT "${XCODE_VERSION_INT}")
+  set(XCODE_VERSION_INT "${XCODE_VERSION_INT}" CACHE INTERNAL "")
+endif()
+
+# Assuming that xcode 12.0 is installed you most probably have ios sdk 14.0 or later installed (tested on Big Sur)
+# if you don't set a deployment target it will be set the way you only get 64-bit builds
+#if(NOT DEFINED DEPLOYMENT_TARGET AND XCODE_VERSION_INT VERSION_GREATER 12.0)
+# Temporarily fix the arm64 issues in CMake install-combined by excluding arm64 for simulator builds (needed for Apple Silicon...)
+#  set(CMAKE_XCODE_ATTRIBUTE_EXCLUDED_ARCHS[sdk=iphonesimulator*] "arm64")
+#endif()
+
+# Check if the platform variable is set
+if(DEFINED PLATFORM)
+  # Environment variables are always preserved.
+  set(ENV{_PLATFORM} "${PLATFORM}")
+elseif(DEFINED ENV{_PLATFORM})
+  set(PLATFORM "$ENV{_PLATFORM}")
+elseif(NOT DEFINED PLATFORM)
+  message(FATAL_ERROR "PLATFORM argument not set. Bailing configure since I don't know what target you want to build for!")
+endif ()
+
+if(PLATFORM MATCHES ".*COMBINED" AND NOT CMAKE_GENERATOR MATCHES "Xcode")
+  message(FATAL_ERROR "The combined builds support requires Xcode to be used as a generator via '-G Xcode' command-line argument in CMake")
+endif()
+
+# Safeguard that the platform value is set and is one of the supported values
+list(FIND _supported_platforms ${PLATFORM} contains_PLATFORM)
+if("${contains_PLATFORM}" EQUAL "-1")
+  string(REPLACE ";"  "\n * " _supported_platforms_formatted "${_supported_platforms}")
+  message(FATAL_ERROR " Invalid PLATFORM specified! Current value: ${PLATFORM}.\n"
+          " Supported PLATFORM values: \n * ${_supported_platforms_formatted}")
+endif()
+
+# Check if Apple Silicon is supported
+if(PLATFORM MATCHES "^(MAC_ARM64)$|^(MAC_CATALYST_ARM64)$|^(MAC_UNIVERSAL)$" AND ${CMAKE_VERSION} VERSION_LESS "3.19.5")
+  message(FATAL_ERROR "Apple Silicon builds requires a minimum of CMake 3.19.5")
+endif()
+
+# Touch the toolchain variable to suppress the "unused variable" warning.
+# This happens if CMake is invoked with the same command line the second time.
+if(CMAKE_TOOLCHAIN_FILE)
+endif()
+
+# Fix for PThread library not in path
+set(CMAKE_THREAD_LIBS_INIT "-lpthread")
+set(CMAKE_HAVE_THREADS_LIBRARY 1)
+set(CMAKE_USE_WIN32_THREADS_INIT 0)
+set(CMAKE_USE_PTHREADS_INIT 1)
+
+# Specify named language support defaults.
+if(NOT DEFINED NAMED_LANGUAGE_SUPPORT AND ${CMAKE_VERSION} VERSION_GREATER_EQUAL "3.16")
+  set(NAMED_LANGUAGE_SUPPORT ON)
+  message(STATUS "[DEFAULTS] Using explicit named language support! E.g., enable_language(CXX) is needed in the project files.")
+elseif(NOT DEFINED NAMED_LANGUAGE_SUPPORT AND ${CMAKE_VERSION} VERSION_LESS "3.16")
+  set(NAMED_LANGUAGE_SUPPORT OFF)
+  message(STATUS "[DEFAULTS] Disabling explicit named language support. Falling back to legacy behavior.")
+elseif(DEFINED NAMED_LANGUAGE_SUPPORT AND ${CMAKE_VERSION} VERSION_LESS "3.16")
+  message(FATAL_ERROR "CMake named language support for OBJC and OBJCXX was added in CMake 3.16.")
+endif()
+set(NAMED_LANGUAGE_SUPPORT_INT ${NAMED_LANGUAGE_SUPPORT} CACHE BOOL
+        "Whether or not to enable explicit named language support" FORCE)
+
+# Specify the minimum version of the deployment target.
+if(NOT DEFINED DEPLOYMENT_TARGET)
+  if (PLATFORM MATCHES "WATCHOS")
+    # Unless specified, SDK version 4.0 is used by default as minimum target version (watchOS).
+    set(DEPLOYMENT_TARGET "4.0")
+  elseif(PLATFORM STREQUAL "MAC")
+    # Unless specified, SDK version 10.13 (High Sierra) is used by default as the minimum target version (macos).
+    set(DEPLOYMENT_TARGET "10.13")
+  elseif(PLATFORM STREQUAL "VISIONOS" OR PLATFORM STREQUAL "SIMULATOR_VISIONOS" OR PLATFORM STREQUAL "SIMULATOR64_VISIONOS")
+    # Unless specified, SDK version 1.0 is used by default as minimum target version (visionOS).
+    set(DEPLOYMENT_TARGET "1.0")
+  elseif(PLATFORM STREQUAL "MAC_ARM64")
+    # Unless specified, SDK version 11.0 (Big Sur) is used by default as the minimum target version (macOS on arm).
+    set(DEPLOYMENT_TARGET "11.0")
+  elseif(PLATFORM STREQUAL "MAC_UNIVERSAL")
+    # Unless specified, SDK version 11.0 (Big Sur) is used by default as minimum target version for universal builds.
+    set(DEPLOYMENT_TARGET "11.0")
+  elseif(PLATFORM STREQUAL "MAC_CATALYST" OR PLATFORM STREQUAL "MAC_CATALYST_ARM64")
+    # Unless specified, SDK version 13.0 is used by default as the minimum target version (mac catalyst minimum requirement).
+    set(DEPLOYMENT_TARGET "13.1")
+  else()
+    # Unless specified, SDK version 11.0 is used by default as the minimum target version (iOS, tvOS).
+    set(DEPLOYMENT_TARGET "11.0")
+  endif()
+  message(STATUS "[DEFAULTS] Using the default min-version since DEPLOYMENT_TARGET not provided!")
+elseif(DEFINED DEPLOYMENT_TARGET AND PLATFORM MATCHES "^MAC_CATALYST" AND ${DEPLOYMENT_TARGET} VERSION_LESS "13.1")
+  message(FATAL_ERROR "Mac Catalyst builds requires a minimum deployment target of 13.1!")
+endif()
+
+# Store the DEPLOYMENT_TARGET in the cache
+set(DEPLOYMENT_TARGET "${DEPLOYMENT_TARGET}" CACHE INTERNAL "")
+
+# Handle the case where we are targeting iOS and a version above 10.3.4 (32-bit support dropped officially)
+if(PLATFORM STREQUAL "OS" AND DEPLOYMENT_TARGET VERSION_GREATER_EQUAL 10.3.4)
+  set(PLATFORM "OS64")
+  message(STATUS "Targeting minimum SDK version ${DEPLOYMENT_TARGET}. Dropping 32-bit support.")
+elseif(PLATFORM STREQUAL "SIMULATOR" AND DEPLOYMENT_TARGET VERSION_GREATER_EQUAL 10.3.4)
+  set(PLATFORM "SIMULATOR64")
+  message(STATUS "Targeting minimum SDK version ${DEPLOYMENT_TARGET}. Dropping 32-bit support.")
+endif()
+
+set(PLATFORM_INT "${PLATFORM}")
+
+if(DEFINED ARCHS)
+  string(REPLACE ";" "-" ARCHS_SPLIT "${ARCHS}")
+endif()
+
+# Determine the platform name and architectures for use in xcodebuild commands
+# from the specified PLATFORM_INT name.
+if(PLATFORM_INT STREQUAL "OS")
+  set(SDK_NAME iphoneos)
+  if(NOT ARCHS)
+    set(ARCHS armv7 armv7s arm64)
+    set(APPLE_TARGET_TRIPLE_INT arm-apple-ios${DEPLOYMENT_TARGET})
+  else()
+    set(APPLE_TARGET_TRIPLE_INT ${ARCHS_SPLIT}-apple-ios${DEPLOYMENT_TARGET})  
+  endif()
+elseif(PLATFORM_INT STREQUAL "OS64")
+  set(SDK_NAME iphoneos)
+  if(NOT ARCHS)
+    if (XCODE_VERSION_INT VERSION_GREATER 10.0)
+      set(ARCHS arm64) # FIXME: Add arm64e when Apple has fixed the integration issues with it, libarclite_iphoneos.a is currently missing bitcode markers for example
+    else()
+      set(ARCHS arm64)
+    endif()
+    set(APPLE_TARGET_TRIPLE_INT arm64-apple-ios${DEPLOYMENT_TARGET})
+  else()
+    set(APPLE_TARGET_TRIPLE_INT ${ARCHS_SPLIT}-apple-ios${DEPLOYMENT_TARGET})
+  endif()
+elseif(PLATFORM_INT STREQUAL "OS64COMBINED")
+  set(SDK_NAME iphoneos)
+  if(MODERN_CMAKE)
+    if(NOT ARCHS)
+      if (XCODE_VERSION_INT VERSION_GREATER 12.0)
+        set(ARCHS arm64 x86_64)
+        set(CMAKE_XCODE_ATTRIBUTE_ARCHS[sdk=iphoneos*] "arm64")
+        set(CMAKE_XCODE_ATTRIBUTE_ARCHS[sdk=iphonesimulator*] "x86_64 arm64")
+        set(CMAKE_XCODE_ATTRIBUTE_VALID_ARCHS[sdk=iphoneos*] "arm64")
+        set(CMAKE_XCODE_ATTRIBUTE_VALID_ARCHS[sdk=iphonesimulator*] "x86_64 arm64")
+      else()
+        set(ARCHS arm64 x86_64)
+        set(CMAKE_XCODE_ATTRIBUTE_ARCHS[sdk=iphoneos*] "arm64")
+        set(CMAKE_XCODE_ATTRIBUTE_ARCHS[sdk=iphonesimulator*] "x86_64")
+        set(CMAKE_XCODE_ATTRIBUTE_VALID_ARCHS[sdk=iphoneos*] "arm64")
+        set(CMAKE_XCODE_ATTRIBUTE_VALID_ARCHS[sdk=iphonesimulator*] "x86_64")
+      endif()
+      set(APPLE_TARGET_TRIPLE_INT arm64-x86_64-apple-ios${DEPLOYMENT_TARGET})
+    else()
+      set(APPLE_TARGET_TRIPLE_INT ${ARCHS_SPLIT}-apple-ios${DEPLOYMENT_TARGET})
+    endif()
+  else()
+    message(FATAL_ERROR "Please make sure that you are running CMake 3.14+ to make the OS64COMBINED setting work")
+  endif()
+elseif(PLATFORM_INT STREQUAL "SIMULATOR64COMBINED")
+  set(SDK_NAME iphonesimulator)
+  if(MODERN_CMAKE)
+    if(NOT ARCHS)
+      if (XCODE_VERSION_INT VERSION_GREATER 12.0)
+        set(ARCHS arm64 x86_64) # FIXME: Add arm64e when Apple have fixed the integration issues with it, libarclite_iphoneos.a is currently missing bitcode markers for example
+        set(CMAKE_XCODE_ATTRIBUTE_ARCHS[sdk=iphoneos*] "")
+        set(CMAKE_XCODE_ATTRIBUTE_ARCHS[sdk=iphonesimulator*] "x86_64 arm64")
+        set(CMAKE_XCODE_ATTRIBUTE_VALID_ARCHS[sdk=iphoneos*] "")
+        set(CMAKE_XCODE_ATTRIBUTE_VALID_ARCHS[sdk=iphonesimulator*] "x86_64 arm64")
+      else()
+        set(ARCHS arm64 x86_64)
+        set(CMAKE_XCODE_ATTRIBUTE_ARCHS[sdk=iphoneos*] "")
+        set(CMAKE_XCODE_ATTRIBUTE_ARCHS[sdk=iphonesimulator*] "x86_64")
+        set(CMAKE_XCODE_ATTRIBUTE_VALID_ARCHS[sdk=iphoneos*] "")
+        set(CMAKE_XCODE_ATTRIBUTE_VALID_ARCHS[sdk=iphonesimulator*] "x86_64")
+      endif()
+      set(APPLE_TARGET_TRIPLE_INT aarch64-x86_64-apple-ios${DEPLOYMENT_TARGET}-simulator)
+    else()
+      set(APPLE_TARGET_TRIPLE_INT ${ARCHS_SPLIT}-apple-ios${DEPLOYMENT_TARGET}-simulator)
+    endif()
+  else()
+    message(FATAL_ERROR "Please make sure that you are running CMake 3.14+ to make the SIMULATOR64COMBINED setting work")
+  endif()
+elseif(PLATFORM_INT STREQUAL "SIMULATOR")
+  set(SDK_NAME iphonesimulator)
+  if(NOT ARCHS)
+    set(ARCHS i386)
+    set(APPLE_TARGET_TRIPLE_INT i386-apple-ios${DEPLOYMENT_TARGET}-simulator)
+  else()
+    set(APPLE_TARGET_TRIPLE_INT ${ARCHS_SPLIT}-apple-ios${DEPLOYMENT_TARGET}-simulator)
+  endif()
+  message(DEPRECATION "SIMULATOR IS DEPRECATED. Consider using SIMULATOR64 instead.")
+elseif(PLATFORM_INT STREQUAL "SIMULATOR64")
+  set(SDK_NAME iphonesimulator)
+  if(NOT ARCHS)
+    set(ARCHS x86_64)
+    set(APPLE_TARGET_TRIPLE_INT x86_64-apple-ios${DEPLOYMENT_TARGET}-simulator)
+  else()
+    set(APPLE_TARGET_TRIPLE_INT ${ARCHS_SPLIT}-apple-ios${DEPLOYMENT_TARGET}-simulator)
+  endif()
+elseif(PLATFORM_INT STREQUAL "SIMULATORARM64")
+  set(SDK_NAME iphonesimulator)
+  if(NOT ARCHS)
+    set(ARCHS arm64)
+    set(APPLE_TARGET_TRIPLE_INT arm64-apple-ios${DEPLOYMENT_TARGET}-simulator)
+  else()
+    set(APPLE_TARGET_TRIPLE_INT ${ARCHS_SPLIT}-apple-ios${DEPLOYMENT_TARGET}-simulator)
+  endif()
+elseif(PLATFORM_INT STREQUAL "TVOS")
+  set(SDK_NAME appletvos)
+  if(NOT ARCHS)
+    set(ARCHS arm64)
+    set(APPLE_TARGET_TRIPLE_INT arm64-apple-tvos${DEPLOYMENT_TARGET})
+  else()
+    set(APPLE_TARGET_TRIPLE_INT ${ARCHS_SPLIT}-apple-tvos${DEPLOYMENT_TARGET})
+  endif()
+elseif (PLATFORM_INT STREQUAL "TVOSCOMBINED")
+  set(SDK_NAME appletvos)
+  if(MODERN_CMAKE)
+    if(NOT ARCHS)
+      set(ARCHS arm64 x86_64)
+      set(APPLE_TARGET_TRIPLE_INT arm64-x86_64-apple-tvos${DEPLOYMENT_TARGET})
+      set(CMAKE_XCODE_ATTRIBUTE_ARCHS[sdk=appletvos*] "arm64")
+      set(CMAKE_XCODE_ATTRIBUTE_ARCHS[sdk=appletvsimulator*] "x86_64")
+      set(CMAKE_XCODE_ATTRIBUTE_VALID_ARCHS[sdk=appletvos*] "arm64")
+      set(CMAKE_XCODE_ATTRIBUTE_VALID_ARCHS[sdk=appletvsimulator*] "x86_64")
+    else()
+      set(APPLE_TARGET_TRIPLE_INT ${ARCHS_SPLIT}-apple-tvos${DEPLOYMENT_TARGET})
+    endif()
+  else()
+    message(FATAL_ERROR "Please make sure that you are running CMake 3.14+ to make the TVOSCOMBINED setting work")
+  endif()
+elseif(PLATFORM_INT STREQUAL "SIMULATOR_TVOS")
+  set(SDK_NAME appletvsimulator)
+  if(NOT ARCHS)
+    set(ARCHS x86_64)
+    set(APPLE_TARGET_TRIPLE_INT x86_64-apple-tvos${DEPLOYMENT_TARGET}-simulator)
+  else()
+    set(APPLE_TARGET_TRIPLE_INT ${ARCHS_SPLIT}-apple-tvos${DEPLOYMENT_TARGET}-simulator)
+  endif()
+elseif(PLATFORM_INT STREQUAL "SIMULATORARM64_TVOS")
+  set(SDK_NAME appletvsimulator)
+  if(NOT ARCHS)
+    set(ARCHS arm64)
+    set(APPLE_TARGET_TRIPLE_INT arm64-apple-tvos${DEPLOYMENT_TARGET}-simulator)
+  else()
+    set(APPLE_TARGET_TRIPLE_INT ${ARCHS_SPLIT}-apple-tvos${DEPLOYMENT_TARGET}-simulator)
+  endif()
+elseif(PLATFORM_INT STREQUAL "WATCHOS")
+  set(SDK_NAME watchos)
+  if(NOT ARCHS)
+    if (XCODE_VERSION_INT VERSION_GREATER 10.0)
+      set(ARCHS armv7k arm64_32)
+      set(APPLE_TARGET_TRIPLE_INT arm64_32-apple-watchos${DEPLOYMENT_TARGET})
+    else()
+      set(ARCHS armv7k)
+      set(APPLE_TARGET_TRIPLE_INT arm-apple-watchos${DEPLOYMENT_TARGET})
+    endif()
+  else()
+    set(APPLE_TARGET_TRIPLE_INT ${ARCHS_SPLIT}-apple-watchos${DEPLOYMENT_TARGET})
+  endif()
+elseif(PLATFORM_INT STREQUAL "WATCHOSCOMBINED")
+  set(SDK_NAME watchos)
+  if(MODERN_CMAKE)
+    if(NOT ARCHS)
+      if (XCODE_VERSION_INT VERSION_GREATER 10.0)
+        set(ARCHS armv7k arm64_32 i386)
+        set(APPLE_TARGET_TRIPLE_INT arm64_32-i386-apple-watchos${DEPLOYMENT_TARGET})
+        set(CMAKE_XCODE_ATTRIBUTE_ARCHS[sdk=watchos*] "armv7k arm64_32")
+        set(CMAKE_XCODE_ATTRIBUTE_ARCHS[sdk=watchsimulator*] "i386")
+        set(CMAKE_XCODE_ATTRIBUTE_VALID_ARCHS[sdk=watchos*] "armv7k arm64_32")
+        set(CMAKE_XCODE_ATTRIBUTE_VALID_ARCHS[sdk=watchsimulator*] "i386")
+      else()
+        set(ARCHS armv7k i386)
+        set(APPLE_TARGET_TRIPLE_INT arm-i386-apple-watchos${DEPLOYMENT_TARGET})
+        set(CMAKE_XCODE_ATTRIBUTE_ARCHS[sdk=watchos*] "armv7k")
+        set(CMAKE_XCODE_ATTRIBUTE_ARCHS[sdk=watchsimulator*] "i386")
+        set(CMAKE_XCODE_ATTRIBUTE_VALID_ARCHS[sdk=watchos*] "armv7k")
+        set(CMAKE_XCODE_ATTRIBUTE_VALID_ARCHS[sdk=watchsimulator*] "i386")
+      endif()
+    else()
+      set(APPLE_TARGET_TRIPLE_INT ${ARCHS_SPLIT}-apple-watchos${DEPLOYMENT_TARGET})
+    endif()
+  else()
+    message(FATAL_ERROR "Please make sure that you are running CMake 3.14+ to make the WATCHOSCOMBINED setting work")
+  endif()
+elseif(PLATFORM_INT STREQUAL "SIMULATOR_WATCHOS")
+  set(SDK_NAME watchsimulator)
+  if(NOT ARCHS)
+    set(ARCHS i386)
+    set(APPLE_TARGET_TRIPLE_INT i386-apple-watchos${DEPLOYMENT_TARGET}-simulator)
+  else()
+    set(APPLE_TARGET_TRIPLE_INT ${ARCHS_SPLIT}-apple-watchos${DEPLOYMENT_TARGET}-simulator)
+  endif()
+elseif(PLATFORM_INT STREQUAL "SIMULATOR64_VISIONOS")
+  set(SDK_NAME xrsimulator)
+  if(NOT ARCHS)
+    set(ARCHS x86_64)
+    set(APPLE_TARGET_TRIPLE_INT x86_64-apple-xros${DEPLOYMENT_TARGET}-simulator)
+  else()
+    set(APPLE_TARGET_TRIPLE_INT ${ARCHS_SPLIT}-apple-xros${DEPLOYMENT_TARGET}-simulator)
+  endif()
+elseif(PLATFORM_INT STREQUAL "SIMULATOR_VISIONOS")
+  set(SDK_NAME xrsimulator)
+  if(NOT ARCHS)
+    set(ARCHS arm64)
+    set(APPLE_TARGET_TRIPLE_INT arm64-apple-xros${DEPLOYMENT_TARGET}-simulator)
+  else()
+    set(APPLE_TARGET_TRIPLE_INT ${ARCHS_SPLIT}-apple-xros${DEPLOYMENT_TARGET}-simulator)
+  endif()
+elseif(PLATFORM_INT STREQUAL "VISIONOS")
+  set(SDK_NAME xros)
+  if(NOT ARCHS)
+    set(ARCHS arm64)
+    set(APPLE_TARGET_TRIPLE_INT arm64-apple-xros${DEPLOYMENT_TARGET})
+  else()
+    set(APPLE_TARGET_TRIPLE_INT ${ARCHS_SPLIT}-apple-xros${DEPLOYMENT_TARGET})
+  endif()
+elseif(PLATFORM_INT STREQUAL "MAC" OR PLATFORM_INT STREQUAL "MAC_CATALYST")
+  set(SDK_NAME macosx)
+  if(NOT ARCHS)
+    set(ARCHS x86_64)
+  endif()
+  string(REPLACE ";" "-" ARCHS_SPLIT "${ARCHS}")
+  if(PLATFORM_INT STREQUAL "MAC")
+    set(APPLE_TARGET_TRIPLE_INT ${ARCHS_SPLIT}-apple-macosx${DEPLOYMENT_TARGET})
+  elseif(PLATFORM_INT STREQUAL "MAC_CATALYST")
+    set(APPLE_TARGET_TRIPLE_INT ${ARCHS_SPLIT}-apple-ios${DEPLOYMENT_TARGET}-macabi)
+  endif()
+elseif(PLATFORM_INT MATCHES "^(MAC_ARM64)$|^(MAC_CATALYST_ARM64)$")
+  set(SDK_NAME macosx)
+  if(NOT ARCHS)
+    set(ARCHS arm64)
+  endif()
+  string(REPLACE ";" "-" ARCHS_SPLIT "${ARCHS}")
+  if(PLATFORM_INT STREQUAL "MAC_ARM64")
+    set(APPLE_TARGET_TRIPLE_INT ${ARCHS_SPLIT}-apple-macosx${DEPLOYMENT_TARGET})
+  elseif(PLATFORM_INT STREQUAL "MAC_CATALYST_ARM64")
+    set(APPLE_TARGET_TRIPLE_INT ${ARCHS_SPLIT}-apple-ios${DEPLOYMENT_TARGET}-macabi)
+  endif()
+elseif(PLATFORM_INT STREQUAL "MAC_UNIVERSAL")
+  set(SDK_NAME macosx)
+  if(NOT ARCHS)
+    set(ARCHS "x86_64;arm64")
+  endif()
+  string(REPLACE ";" "-" ARCHS_SPLIT "${ARCHS}")
+  set(APPLE_TARGET_TRIPLE_INT ${ARCHS_SPLIT}-apple-macosx${DEPLOYMENT_TARGET})
+else()
+  message(FATAL_ERROR "Invalid PLATFORM: ${PLATFORM_INT}")
+endif()
+
+string(REPLACE ";" " " ARCHS_SPACED "${ARCHS}")
+
+if(MODERN_CMAKE AND PLATFORM_INT MATCHES ".*COMBINED" AND NOT CMAKE_GENERATOR MATCHES "Xcode")
+  message(FATAL_ERROR "The COMBINED options only work with Xcode generator, -G Xcode")
+endif()
+
+if(CMAKE_GENERATOR MATCHES "Xcode" AND PLATFORM_INT MATCHES "^MAC_CATALYST")
+  set(CMAKE_XCODE_ATTRIBUTE_CLANG_CXX_LIBRARY "libc++")
+  set(CMAKE_XCODE_ATTRIBUTE_SUPPORTED_PLATFORMS "macosx")
+  set(CMAKE_XCODE_ATTRIBUTE_SUPPORTS_MACCATALYST "YES")
+  if(NOT DEFINED MACOSX_DEPLOYMENT_TARGET)
+    set(CMAKE_XCODE_ATTRIBUTE_MACOSX_DEPLOYMENT_TARGET "10.15")
+  else()
+    set(CMAKE_XCODE_ATTRIBUTE_MACOSX_DEPLOYMENT_TARGET "${MACOSX_DEPLOYMENT_TARGET}")
+  endif()
+elseif(CMAKE_GENERATOR MATCHES "Xcode")
+  set(CMAKE_XCODE_ATTRIBUTE_CLANG_CXX_LIBRARY "libc++")
+  set(CMAKE_XCODE_ATTRIBUTE_IPHONEOS_DEPLOYMENT_TARGET "${DEPLOYMENT_TARGET}")
+  if(NOT PLATFORM_INT MATCHES ".*COMBINED")
+    set(CMAKE_XCODE_ATTRIBUTE_ARCHS[sdk=${SDK_NAME}*] "${ARCHS_SPACED}")
+    set(CMAKE_XCODE_ATTRIBUTE_VALID_ARCHS[sdk=${SDK_NAME}*] "${ARCHS_SPACED}")
+  endif()
+endif()
+
+# If the user did not specify the SDK root to use, then query xcodebuild for it.
+if(DEFINED CMAKE_OSX_SYSROOT_INT)
+  # Environment variables are always preserved.
+  set(ENV{_CMAKE_OSX_SYSROOT_INT} "${CMAKE_OSX_SYSROOT_INT}")
+elseif(DEFINED ENV{_CMAKE_OSX_SYSROOT_INT})
+  set(CMAKE_OSX_SYSROOT_INT "$ENV{_CMAKE_OSX_SYSROOT_INT}")
+elseif(NOT DEFINED CMAKE_OSX_SYSROOT_INT)
+  execute_process(COMMAND ${XCODEBUILD_EXECUTABLE} -version -sdk ${SDK_NAME} Path
+          OUTPUT_VARIABLE CMAKE_OSX_SYSROOT_INT
+          ERROR_QUIET
+          OUTPUT_STRIP_TRAILING_WHITESPACE)
+endif()
+
+if (NOT DEFINED CMAKE_OSX_SYSROOT_INT AND NOT DEFINED CMAKE_OSX_SYSROOT)
+  message(SEND_ERROR "Please make sure that Xcode is installed and that the toolchain"
+          "is pointing to the correct path. Please run:"
+          "sudo xcode-select -s /Applications/Xcode.app/Contents/Developer"
+          "and see if that fixes the problem for you.")
+  message(FATAL_ERROR "Invalid CMAKE_OSX_SYSROOT: ${CMAKE_OSX_SYSROOT} "
+          "does not exist.")
+elseif(DEFINED CMAKE_OSX_SYSROOT_INT)
+  set(CMAKE_OSX_SYSROOT_INT "${CMAKE_OSX_SYSROOT_INT}" CACHE INTERNAL "")
+  # Specify the location or name of the platform SDK to be used in CMAKE_OSX_SYSROOT.
+  set(CMAKE_OSX_SYSROOT "${CMAKE_OSX_SYSROOT_INT}" CACHE INTERNAL "")
+endif()
+
+# Use bitcode or not
+if(NOT DEFINED ENABLE_BITCODE)
+  message(STATUS "[DEFAULTS] Disabling bitcode support by default. ENABLE_BITCODE not provided for override!")
+  set(ENABLE_BITCODE OFF)
+endif()
+set(ENABLE_BITCODE_INT ${ENABLE_BITCODE} CACHE BOOL
+        "Whether or not to enable bitcode" FORCE)
+# Use ARC or not
+if(NOT DEFINED ENABLE_ARC)
+  # Unless specified, enable ARC support by default
+  set(ENABLE_ARC ON)
+  message(STATUS "[DEFAULTS] Enabling ARC support by default. ENABLE_ARC not provided!")
+endif()
+set(ENABLE_ARC_INT ${ENABLE_ARC} CACHE BOOL "Whether or not to enable ARC" FORCE)
+# Use hidden visibility or not
+if(NOT DEFINED ENABLE_VISIBILITY)
+  # Unless specified, disable symbols visibility by default
+  set(ENABLE_VISIBILITY OFF)
+  message(STATUS "[DEFAULTS] Hiding symbols visibility by default. ENABLE_VISIBILITY not provided!")
+endif()
+set(ENABLE_VISIBILITY_INT ${ENABLE_VISIBILITY} CACHE BOOL "Whether or not to hide symbols from the dynamic linker (-fvisibility=hidden)" FORCE)
+# Set strict compiler checks or not
+if(NOT DEFINED ENABLE_STRICT_TRY_COMPILE)
+  # Unless specified, disable strict try_compile()
+  set(ENABLE_STRICT_TRY_COMPILE OFF)
+  message(STATUS "[DEFAULTS] Using NON-strict compiler checks by default. ENABLE_STRICT_TRY_COMPILE not provided!")
+endif()
+set(ENABLE_STRICT_TRY_COMPILE_INT ${ENABLE_STRICT_TRY_COMPILE} CACHE BOOL
+        "Whether or not to use strict compiler checks" FORCE)
+
+# Get the SDK version information.
+if(DEFINED SDK_VERSION)
+  # Environment variables are always preserved.
+  set(ENV{_SDK_VERSION} "${SDK_VERSION}")
+elseif(DEFINED ENV{_SDK_VERSION})
+  set(SDK_VERSION "$ENV{_SDK_VERSION}")
+elseif(NOT DEFINED SDK_VERSION)
+  execute_process(COMMAND ${XCODEBUILD_EXECUTABLE} -sdk ${CMAKE_OSX_SYSROOT_INT} -version SDKVersion
+          OUTPUT_VARIABLE SDK_VERSION
+          ERROR_QUIET
+          OUTPUT_STRIP_TRAILING_WHITESPACE)
+endif()
+
+# Find the Developer root for the specific iOS platform being compiled for
+# from CMAKE_OSX_SYSROOT.  Should be ../../ from SDK specified in
+# CMAKE_OSX_SYSROOT. There does not appear to be a direct way to obtain
+# this information from xcrun or xcodebuild.
+if (NOT DEFINED CMAKE_DEVELOPER_ROOT AND NOT CMAKE_GENERATOR MATCHES "Xcode")
+  get_filename_component(PLATFORM_SDK_DIR ${CMAKE_OSX_SYSROOT_INT} PATH)
+  get_filename_component(CMAKE_DEVELOPER_ROOT ${PLATFORM_SDK_DIR} PATH)
+  if (NOT EXISTS "${CMAKE_DEVELOPER_ROOT}")
+    message(FATAL_ERROR "Invalid CMAKE_DEVELOPER_ROOT: ${CMAKE_DEVELOPER_ROOT} does not exist.")
+  endif()
+endif()
+
+# Find the C & C++ compilers for the specified SDK.
+if(DEFINED CMAKE_C_COMPILER)
+  # Environment variables are always preserved.
+  set(ENV{_CMAKE_C_COMPILER} "${CMAKE_C_COMPILER}")
+elseif(DEFINED ENV{_CMAKE_C_COMPILER})
+  set(CMAKE_C_COMPILER "$ENV{_CMAKE_C_COMPILER}")
+  set(CMAKE_ASM_COMPILER ${CMAKE_C_COMPILER})
+elseif(NOT DEFINED CMAKE_C_COMPILER)
+  execute_process(COMMAND xcrun -sdk ${CMAKE_OSX_SYSROOT_INT} -find clang
+          OUTPUT_VARIABLE CMAKE_C_COMPILER
+          ERROR_QUIET
+          OUTPUT_STRIP_TRAILING_WHITESPACE)
+  set(CMAKE_ASM_COMPILER ${CMAKE_C_COMPILER})
+endif()
+if(DEFINED CMAKE_CXX_COMPILER)
+  # Environment variables are always preserved.
+  set(ENV{_CMAKE_CXX_COMPILER} "${CMAKE_CXX_COMPILER}")
+elseif(DEFINED ENV{_CMAKE_CXX_COMPILER})
+  set(CMAKE_CXX_COMPILER "$ENV{_CMAKE_CXX_COMPILER}")
+elseif(NOT DEFINED CMAKE_CXX_COMPILER)
+  execute_process(COMMAND xcrun -sdk ${CMAKE_OSX_SYSROOT_INT} -find clang++
+          OUTPUT_VARIABLE CMAKE_CXX_COMPILER
+          ERROR_QUIET
+          OUTPUT_STRIP_TRAILING_WHITESPACE)
+endif()
+# Find (Apple's) libtool.
+if(DEFINED BUILD_LIBTOOL)
+  # Environment variables are always preserved.
+  set(ENV{_BUILD_LIBTOOL} "${BUILD_LIBTOOL}")
+elseif(DEFINED ENV{_BUILD_LIBTOOL})
+  set(BUILD_LIBTOOL "$ENV{_BUILD_LIBTOOL}")
+elseif(NOT DEFINED BUILD_LIBTOOL)
+  execute_process(COMMAND xcrun -sdk ${CMAKE_OSX_SYSROOT_INT} -find libtool
+          OUTPUT_VARIABLE BUILD_LIBTOOL
+          ERROR_QUIET
+          OUTPUT_STRIP_TRAILING_WHITESPACE)
+endif()
+# Find the toolchain's provided install_name_tool if none is found on the host
+if(DEFINED CMAKE_INSTALL_NAME_TOOL)
+  # Environment variables are always preserved.
+  set(ENV{_CMAKE_INSTALL_NAME_TOOL} "${CMAKE_INSTALL_NAME_TOOL}")
+elseif(DEFINED ENV{_CMAKE_INSTALL_NAME_TOOL})
+  set(CMAKE_INSTALL_NAME_TOOL "$ENV{_CMAKE_INSTALL_NAME_TOOL}")
+elseif(NOT DEFINED CMAKE_INSTALL_NAME_TOOL)
+  execute_process(COMMAND xcrun -sdk ${CMAKE_OSX_SYSROOT_INT} -find install_name_tool
+          OUTPUT_VARIABLE CMAKE_INSTALL_NAME_TOOL_INT
+          ERROR_QUIET
+          OUTPUT_STRIP_TRAILING_WHITESPACE)
+  set(CMAKE_INSTALL_NAME_TOOL ${CMAKE_INSTALL_NAME_TOOL_INT} CACHE INTERNAL "")
+endif()
+
+# Configure libtool to be used instead of ar + ranlib to build static libraries.
+# This is required on Xcode 7+, but should also work on previous versions of
+# Xcode.
+get_property(languages GLOBAL PROPERTY ENABLED_LANGUAGES)
+foreach(lang ${languages})
+  set(CMAKE_${lang}_CREATE_STATIC_LIBRARY "${BUILD_LIBTOOL} -static -o <TARGET> <LINK_FLAGS> <OBJECTS> " CACHE INTERNAL "")
+endforeach()
+
+# CMake 3.14+ support building for iOS, watchOS, and tvOS out of the box.
+if(MODERN_CMAKE)
+  if(SDK_NAME MATCHES "iphone")
+    set(CMAKE_SYSTEM_NAME iOS)
+  elseif(SDK_NAME MATCHES "xros")
+      set(CMAKE_SYSTEM_NAME visionOS)
+  elseif(SDK_NAME MATCHES "xrsimulator")
+      set(CMAKE_SYSTEM_NAME visionOS)
+  elseif(SDK_NAME MATCHES "macosx")
+    set(CMAKE_SYSTEM_NAME Darwin)
+  elseif(SDK_NAME MATCHES "appletv")
+    set(CMAKE_SYSTEM_NAME tvOS)
+  elseif(SDK_NAME MATCHES "watch")
+    set(CMAKE_SYSTEM_NAME watchOS)
+  endif()
+  # Provide flags for a combined FAT library build on newer CMake versions
+  if(PLATFORM_INT MATCHES ".*COMBINED")
+    set(CMAKE_IOS_INSTALL_COMBINED YES)
+    if(CMAKE_GENERATOR MATCHES "Xcode")
+      # Set the SDKROOT Xcode properties to a Xcode-friendly value (the SDK_NAME, E.g, iphoneos)
+      # This way, Xcode will automatically switch between the simulator and device SDK when building.
+      set(CMAKE_XCODE_ATTRIBUTE_SDKROOT "${SDK_NAME}")
+      # Force to not build just one ARCH, but all!
+      set(CMAKE_XCODE_ATTRIBUTE_ONLY_ACTIVE_ARCH "NO")
+    endif()
+  endif()
+elseif(NOT DEFINED CMAKE_SYSTEM_NAME AND ${CMAKE_VERSION} VERSION_GREATER_EQUAL "3.10")
+  # Legacy code path prior to CMake 3.14 or fallback if no CMAKE_SYSTEM_NAME specified
+  set(CMAKE_SYSTEM_NAME iOS)
+elseif(NOT DEFINED CMAKE_SYSTEM_NAME)
+  # Legacy code path before CMake 3.14 or fallback if no CMAKE_SYSTEM_NAME specified
+  set(CMAKE_SYSTEM_NAME Darwin)
+endif()
+# Standard settings.
+set(CMAKE_SYSTEM_VERSION ${SDK_VERSION} CACHE INTERNAL "")
+set(UNIX ON CACHE BOOL "")
+set(APPLE ON CACHE BOOL "")
+if(PLATFORM STREQUAL "MAC" OR PLATFORM STREQUAL "MAC_ARM64" OR PLATFORM STREQUAL "MAC_UNIVERSAL")
+  set(IOS OFF CACHE BOOL "")
+  set(MACOS ON CACHE BOOL "")
+elseif(PLATFORM STREQUAL "MAC_CATALYST" OR PLATFORM STREQUAL "MAC_CATALYST_ARM64")
+  set(IOS ON CACHE BOOL "")
+  set(MACOS ON CACHE BOOL "")
+else()
+  set(IOS ON CACHE BOOL "")
+endif()
+# Set the architectures for which to build.
+set(CMAKE_OSX_ARCHITECTURES ${ARCHS} CACHE INTERNAL "")
+# Change the type of target generated for try_compile() so it'll work when cross-compiling, weak compiler checks
+if(NOT ENABLE_STRICT_TRY_COMPILE_INT)
+  set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY)
+endif()
+# All iOS/Darwin specific settings - some may be redundant.
+if (NOT DEFINED CMAKE_MACOSX_BUNDLE)
+  set(CMAKE_MACOSX_BUNDLE YES)
+endif()
+set(CMAKE_XCODE_ATTRIBUTE_CODE_SIGNING_REQUIRED "NO")
+set(CMAKE_SHARED_LIBRARY_PREFIX "lib")
+set(CMAKE_SHARED_LIBRARY_SUFFIX ".dylib")
+set(CMAKE_SHARED_MODULE_PREFIX "lib")
+set(CMAKE_SHARED_MODULE_SUFFIX ".so")
+set(CMAKE_C_COMPILER_ABI ELF)
+set(CMAKE_CXX_COMPILER_ABI ELF)
+set(CMAKE_C_HAS_ISYSROOT 1)
+set(CMAKE_CXX_HAS_ISYSROOT 1)
+set(CMAKE_MODULE_EXISTS 1)
+set(CMAKE_DL_LIBS "")
+set(CMAKE_C_OSX_COMPATIBILITY_VERSION_FLAG "-compatibility_version ")
+set(CMAKE_C_OSX_CURRENT_VERSION_FLAG "-current_version ")
+set(CMAKE_CXX_OSX_COMPATIBILITY_VERSION_FLAG "${CMAKE_C_OSX_COMPATIBILITY_VERSION_FLAG}")
+set(CMAKE_CXX_OSX_CURRENT_VERSION_FLAG "${CMAKE_C_OSX_CURRENT_VERSION_FLAG}")
+
+if(ARCHS MATCHES "((^|;|, )(arm64|arm64e|x86_64))+")
+  set(CMAKE_C_SIZEOF_DATA_PTR 8)
+  set(CMAKE_CXX_SIZEOF_DATA_PTR 8)
+  if(ARCHS MATCHES "((^|;|, )(arm64|arm64e))+")
+    set(CMAKE_SYSTEM_PROCESSOR "aarch64")
+  else()
+    set(CMAKE_SYSTEM_PROCESSOR "x86_64")
+  endif()
+else()
+  set(CMAKE_C_SIZEOF_DATA_PTR 4)
+  set(CMAKE_CXX_SIZEOF_DATA_PTR 4)
+  set(CMAKE_SYSTEM_PROCESSOR "arm")
+endif()
+
+# Note that only Xcode 7+ supports the newer more specific:
+# -m${SDK_NAME}-version-min flags, older versions of Xcode use:
+# -m(ios/ios-simulator)-version-min instead.
+if(${CMAKE_VERSION} VERSION_LESS "3.11")
+  if(PLATFORM_INT STREQUAL "OS" OR PLATFORM_INT STREQUAL "OS64")
+    if(XCODE_VERSION_INT VERSION_LESS 7.0)
+      set(SDK_NAME_VERSION_FLAGS
+              "-mios-version-min=${DEPLOYMENT_TARGET}")
+    else()
+      # Xcode 7.0+ uses flags we can build directly from SDK_NAME.
+      set(SDK_NAME_VERSION_FLAGS
+              "-m${SDK_NAME}-version-min=${DEPLOYMENT_TARGET}")
+    endif()
+  elseif(PLATFORM_INT STREQUAL "TVOS")
+    set(SDK_NAME_VERSION_FLAGS
+            "-mtvos-version-min=${DEPLOYMENT_TARGET}")
+  elseif(PLATFORM_INT STREQUAL "SIMULATOR_TVOS")
+    set(SDK_NAME_VERSION_FLAGS
+            "-mtvos-simulator-version-min=${DEPLOYMENT_TARGET}")
+elseif(PLATFORM_INT STREQUAL "SIMULATORARM64_TVOS")
+    set(SDK_NAME_VERSION_FLAGS
+            "-mtvos-simulator-version-min=${DEPLOYMENT_TARGET}")
+  elseif(PLATFORM_INT STREQUAL "WATCHOS")
+    set(SDK_NAME_VERSION_FLAGS
+            "-mwatchos-version-min=${DEPLOYMENT_TARGET}")
+  elseif(PLATFORM_INT STREQUAL "SIMULATOR_WATCHOS")
+    set(SDK_NAME_VERSION_FLAGS
+            "-mwatchos-simulator-version-min=${DEPLOYMENT_TARGET}")
+  elseif(PLATFORM_INT STREQUAL "MAC")
+    set(SDK_NAME_VERSION_FLAGS
+            "-mmacosx-version-min=${DEPLOYMENT_TARGET}")
+  else()
+    # SIMULATOR or SIMULATOR64 both use -mios-simulator-version-min.
+    set(SDK_NAME_VERSION_FLAGS
+            "-mios-simulator-version-min=${DEPLOYMENT_TARGET}")
+  endif()
+elseif(NOT PLATFORM_INT MATCHES "^MAC_CATALYST")
+  # Newer versions of CMake sets the version min flags correctly, skip this for Mac Catalyst targets
+  set(CMAKE_OSX_DEPLOYMENT_TARGET ${DEPLOYMENT_TARGET})
+endif()
+
+if(DEFINED APPLE_TARGET_TRIPLE_INT)
+  set(APPLE_TARGET_TRIPLE ${APPLE_TARGET_TRIPLE_INT} CACHE INTERNAL "")
+  set(CMAKE_C_COMPILER_TARGET ${APPLE_TARGET_TRIPLE})
+  set(CMAKE_CXX_COMPILER_TARGET ${APPLE_TARGET_TRIPLE})
+  set(CMAKE_ASM_COMPILER_TARGET ${APPLE_TARGET_TRIPLE})
+endif()
+
+if(PLATFORM_INT MATCHES "^MAC_CATALYST")
+  set(C_TARGET_FLAGS "-isystem ${CMAKE_OSX_SYSROOT_INT}/System/iOSSupport/usr/include -iframework ${CMAKE_OSX_SYSROOT_INT}/System/iOSSupport/System/Library/Frameworks")
+endif()
+
+if(ENABLE_BITCODE_INT)
+  set(BITCODE "-fembed-bitcode")
+  set(CMAKE_XCODE_ATTRIBUTE_BITCODE_GENERATION_MODE "bitcode")
+  set(CMAKE_XCODE_ATTRIBUTE_ENABLE_BITCODE "YES")
+else()
+  set(BITCODE "")
+  set(CMAKE_XCODE_ATTRIBUTE_ENABLE_BITCODE "NO")
+endif()
+
+if(ENABLE_ARC_INT)
+  set(FOBJC_ARC "-fobjc-arc")
+  set(CMAKE_XCODE_ATTRIBUTE_CLANG_ENABLE_OBJC_ARC "YES")
+else()
+  set(FOBJC_ARC "-fno-objc-arc")
+  set(CMAKE_XCODE_ATTRIBUTE_CLANG_ENABLE_OBJC_ARC "NO")
+endif()
+
+if(NAMED_LANGUAGE_SUPPORT_INT)
+  set(OBJC_VARS "-fobjc-abi-version=2 -DOBJC_OLD_DISPATCH_PROTOTYPES=0")
+  set(OBJC_LEGACY_VARS "")
+else()
+  set(OBJC_VARS "")
+  set(OBJC_LEGACY_VARS "-fobjc-abi-version=2 -DOBJC_OLD_DISPATCH_PROTOTYPES=0")
+endif()
+
+if(NOT ENABLE_VISIBILITY_INT)
+  foreach(lang ${languages})
+    set(CMAKE_${lang}_VISIBILITY_PRESET "hidden" CACHE INTERNAL "")
+  endforeach()
+  set(CMAKE_XCODE_ATTRIBUTE_GCC_SYMBOLS_PRIVATE_EXTERN "YES")
+  set(VISIBILITY "-fvisibility=hidden -fvisibility-inlines-hidden")
+else()
+  foreach(lang ${languages})
+    set(CMAKE_${lang}_VISIBILITY_PRESET "default" CACHE INTERNAL "")
+  endforeach()
+  set(CMAKE_XCODE_ATTRIBUTE_GCC_SYMBOLS_PRIVATE_EXTERN "NO")
+  set(VISIBILITY "-fvisibility=default")
+endif()
+
+if(DEFINED APPLE_TARGET_TRIPLE)
+  set(APPLE_TARGET_TRIPLE_FLAG "-target ${APPLE_TARGET_TRIPLE}")
+endif()
+
+#Check if Xcode generator is used since that will handle these flags automagically
+if(CMAKE_GENERATOR MATCHES "Xcode")
+  message(STATUS "Not setting any manual command-line buildflags, since Xcode is selected as the generator. Modifying the Xcode build-settings directly instead.")
+else()
+  set(CMAKE_C_FLAGS "${C_TARGET_FLAGS} ${APPLE_TARGET_TRIPLE_FLAG} ${SDK_NAME_VERSION_FLAGS} ${OBJC_LEGACY_VARS} ${BITCODE} ${VISIBILITY} ${CMAKE_C_FLAGS}")
+  set(CMAKE_C_FLAGS_DEBUG "-O0 -g ${CMAKE_C_FLAGS_DEBUG}")
+  set(CMAKE_C_FLAGS_MINSIZEREL "-DNDEBUG -Os ${CMAKE_C_FLAGS_MINSIZEREL}")
+  set(CMAKE_C_FLAGS_RELWITHDEBINFO "-DNDEBUG -O2 -g ${CMAKE_C_FLAGS_RELWITHDEBINFO}")
+  set(CMAKE_C_FLAGS_RELEASE "-DNDEBUG -O3 ${CMAKE_C_FLAGS_RELEASE}")
+  set(CMAKE_CXX_FLAGS "${C_TARGET_FLAGS} ${APPLE_TARGET_TRIPLE_FLAG} ${SDK_NAME_VERSION_FLAGS} ${OBJC_LEGACY_VARS} ${BITCODE} ${VISIBILITY} ${CMAKE_CXX_FLAGS}")
+  set(CMAKE_CXX_FLAGS_DEBUG "-O0 -g ${CMAKE_CXX_FLAGS_DEBUG}")
+  set(CMAKE_CXX_FLAGS_MINSIZEREL "-DNDEBUG -Os ${CMAKE_CXX_FLAGS_MINSIZEREL}")
+  set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "-DNDEBUG -O2 -g ${CMAKE_CXX_FLAGS_RELWITHDEBINFO}")
+  set(CMAKE_CXX_FLAGS_RELEASE "-DNDEBUG -O3 ${CMAKE_CXX_FLAGS_RELEASE}")
+  if(NAMED_LANGUAGE_SUPPORT_INT)
+    set(CMAKE_OBJC_FLAGS "${C_TARGET_FLAGS} ${APPLE_TARGET_TRIPLE_FLAG} ${SDK_NAME_VERSION_FLAGS} ${BITCODE} ${VISIBILITY} ${FOBJC_ARC} ${OBJC_VARS} ${CMAKE_OBJC_FLAGS}")
+    set(CMAKE_OBJC_FLAGS_DEBUG "-O0 -g ${CMAKE_OBJC_FLAGS_DEBUG}")
+    set(CMAKE_OBJC_FLAGS_MINSIZEREL "-DNDEBUG -Os ${CMAKE_OBJC_FLAGS_MINSIZEREL}")
+    set(CMAKE_OBJC_FLAGS_RELWITHDEBINFO "-DNDEBUG -O2 -g ${CMAKE_OBJC_FLAGS_RELWITHDEBINFO}")
+    set(CMAKE_OBJC_FLAGS_RELEASE "-DNDEBUG -O3 ${CMAKE_OBJC_FLAGS_RELEASE}")
+    set(CMAKE_OBJCXX_FLAGS "${C_TARGET_FLAGS} ${APPLE_TARGET_TRIPLE_FLAG} ${SDK_NAME_VERSION_FLAGS} ${BITCODE} ${VISIBILITY} ${FOBJC_ARC} ${OBJC_VARS} ${CMAKE_OBJCXX_FLAGS}")
+    set(CMAKE_OBJCXX_FLAGS_DEBUG "-O0 -g ${CMAKE_OBJCXX_FLAGS_DEBUG}")
+    set(CMAKE_OBJCXX_FLAGS_MINSIZEREL "-DNDEBUG -Os ${CMAKE_OBJCXX_FLAGS_MINSIZEREL}")
+    set(CMAKE_OBJCXX_FLAGS_RELWITHDEBINFO "-DNDEBUG -O2 -g ${CMAKE_OBJCXX_FLAGS_RELWITHDEBINFO}")
+    set(CMAKE_OBJCXX_FLAGS_RELEASE "-DNDEBUG -O3 ${CMAKE_OBJCXX_FLAGS_RELEASE}")
+  endif()
+  set(CMAKE_C_LINK_FLAGS "${C_TARGET_FLAGS} ${SDK_NAME_VERSION_FLAGS} -Wl,-search_paths_first ${CMAKE_C_LINK_FLAGS}")
+  set(CMAKE_CXX_LINK_FLAGS "${C_TARGET_FLAGS} ${SDK_NAME_VERSION_FLAGS}  -Wl,-search_paths_first ${CMAKE_CXX_LINK_FLAGS}")
+  if(NAMED_LANGUAGE_SUPPORT_INT)
+    set(CMAKE_OBJC_LINK_FLAGS "${C_TARGET_FLAGS} ${SDK_NAME_VERSION_FLAGS} -Wl,-search_paths_first ${CMAKE_OBJC_LINK_FLAGS}")
+    set(CMAKE_OBJCXX_LINK_FLAGS "${C_TARGET_FLAGS} ${SDK_NAME_VERSION_FLAGS} -Wl,-search_paths_first ${CMAKE_OBJCXX_LINK_FLAGS}")
+  endif()
+  set(CMAKE_ASM_FLAGS "${CMAKE_C_FLAGS} -x assembler-with-cpp -arch ${CMAKE_OSX_ARCHITECTURES} ${APPLE_TARGET_TRIPLE_FLAG}")
+endif()
+
+## Print status messages to inform of the current state
+message(STATUS "Configuring ${SDK_NAME} build for platform: ${PLATFORM_INT}, architecture(s): ${ARCHS}")
+message(STATUS "Using SDK: ${CMAKE_OSX_SYSROOT_INT}")
+message(STATUS "Using C compiler: ${CMAKE_C_COMPILER}")
+message(STATUS "Using CXX compiler: ${CMAKE_CXX_COMPILER}")
+message(STATUS "Using libtool: ${BUILD_LIBTOOL}")
+message(STATUS "Using install name tool: ${CMAKE_INSTALL_NAME_TOOL}")
+if(DEFINED APPLE_TARGET_TRIPLE)
+  message(STATUS "Autoconf target triple: ${APPLE_TARGET_TRIPLE}")
+endif()
+message(STATUS "Using minimum deployment version: ${DEPLOYMENT_TARGET}"
+        " (SDK version: ${SDK_VERSION})")
+if(MODERN_CMAKE)
+  message(STATUS "Merging integrated CMake 3.14+ iOS,tvOS,watchOS,macOS toolchain(s) with this toolchain!")
+  if(PLATFORM_INT MATCHES ".*COMBINED")
+    message(STATUS "Will combine built (static) artifacts into FAT lib...")
+  endif()
+endif()
+if(CMAKE_GENERATOR MATCHES "Xcode")
+  message(STATUS "Using Xcode version: ${XCODE_VERSION_INT}")
+endif()
+message(STATUS "CMake version: ${CMAKE_VERSION}")
+if(DEFINED SDK_NAME_VERSION_FLAGS)
+  message(STATUS "Using version flags: ${SDK_NAME_VERSION_FLAGS}")
+endif()
+message(STATUS "Using a data_ptr size of: ${CMAKE_CXX_SIZEOF_DATA_PTR}")
+if(ENABLE_BITCODE_INT)
+  message(STATUS "Bitcode: Enabled")
+else()
+  message(STATUS "Bitcode: Disabled")
+endif()
+
+if(ENABLE_ARC_INT)
+  message(STATUS "ARC: Enabled")
+else()
+  message(STATUS "ARC: Disabled")
+endif()
+
+if(ENABLE_VISIBILITY_INT)
+  message(STATUS "Hiding symbols: Disabled")
+else()
+  message(STATUS "Hiding symbols: Enabled")
+endif()
+
+# Set global properties
+set_property(GLOBAL PROPERTY PLATFORM "${PLATFORM}")
+set_property(GLOBAL PROPERTY APPLE_TARGET_TRIPLE "${APPLE_TARGET_TRIPLE_INT}")
+set_property(GLOBAL PROPERTY SDK_VERSION "${SDK_VERSION}")
+set_property(GLOBAL PROPERTY XCODE_VERSION "${XCODE_VERSION_INT}")
+set_property(GLOBAL PROPERTY OSX_ARCHITECTURES "${CMAKE_OSX_ARCHITECTURES}")
+
+# Export configurable variables for the try_compile() command.
+set(CMAKE_TRY_COMPILE_PLATFORM_VARIABLES
+        PLATFORM
+        XCODE_VERSION_INT
+        SDK_VERSION
+        NAMED_LANGUAGE_SUPPORT
+        DEPLOYMENT_TARGET
+        CMAKE_DEVELOPER_ROOT
+        CMAKE_OSX_SYSROOT_INT
+        ENABLE_BITCODE
+        ENABLE_ARC
+        CMAKE_ASM_COMPILER
+        CMAKE_C_COMPILER
+        CMAKE_C_COMPILER_TARGET
+        CMAKE_CXX_COMPILER
+        CMAKE_CXX_COMPILER_TARGET
+        BUILD_LIBTOOL
+        CMAKE_INSTALL_NAME_TOOL
+        CMAKE_C_FLAGS
+        CMAKE_C_DEBUG
+        CMAKE_C_MINSIZEREL
+        CMAKE_C_RELWITHDEBINFO
+        CMAKE_C_RELEASE
+        CMAKE_CXX_FLAGS
+        CMAKE_CXX_FLAGS_DEBUG
+        CMAKE_CXX_FLAGS_MINSIZEREL
+        CMAKE_CXX_FLAGS_RELWITHDEBINFO
+        CMAKE_CXX_FLAGS_RELEASE
+        CMAKE_C_LINK_FLAGS
+        CMAKE_CXX_LINK_FLAGS
+        CMAKE_ASM_FLAGS
+)
+
+if(NAMED_LANGUAGE_SUPPORT_INT)
+  list(APPEND CMAKE_TRY_COMPILE_PLATFORM_VARIABLES 
+        CMAKE_OBJC_FLAGS
+        CMAKE_OBJC_DEBUG
+        CMAKE_OBJC_MINSIZEREL
+        CMAKE_OBJC_RELWITHDEBINFO
+        CMAKE_OBJC_RELEASE
+        CMAKE_OBJCXX_FLAGS
+        CMAKE_OBJCXX_DEBUG
+        CMAKE_OBJCXX_MINSIZEREL
+        CMAKE_OBJCXX_RELWITHDEBINFO
+        CMAKE_OBJCXX_RELEASE
+        CMAKE_OBJC_LINK_FLAGS
+        CMAKE_OBJCXX_LINK_FLAGS
+  )
+endif()
+
+set(CMAKE_PLATFORM_HAS_INSTALLNAME 1)
+set(CMAKE_SHARED_LINKER_FLAGS "-rpath @executable_path/Frameworks -rpath @loader_path/Frameworks")
+set(CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS "-dynamiclib -Wl,-headerpad_max_install_names")
+set(CMAKE_SHARED_MODULE_CREATE_C_FLAGS "-bundle -Wl,-headerpad_max_install_names")
+set(CMAKE_SHARED_MODULE_LOADER_C_FLAG "-Wl,-bundle_loader,")
+set(CMAKE_SHARED_MODULE_LOADER_CXX_FLAG "-Wl,-bundle_loader,")
+set(CMAKE_FIND_LIBRARY_SUFFIXES ".tbd" ".dylib" ".so" ".a")
+set(CMAKE_SHARED_LIBRARY_SONAME_C_FLAG "-install_name")
+
+# Set the find root to the SDK developer roots.
+# Note: CMAKE_FIND_ROOT_PATH is only useful when cross-compiling. Thus, do not set on macOS builds.
+if(NOT PLATFORM_INT MATCHES "^MAC.*$")
+  list(APPEND CMAKE_FIND_ROOT_PATH "${CMAKE_OSX_SYSROOT_INT}" CACHE INTERNAL "")
+  set(CMAKE_IGNORE_PATH "/System/Library/Frameworks;/usr/local/lib;/opt/homebrew" CACHE INTERNAL "")
+endif()
+
+# Default to searching for frameworks first.
+IF(NOT DEFINED CMAKE_FIND_FRAMEWORK)
+  set(CMAKE_FIND_FRAMEWORK FIRST)
+ENDIF(NOT DEFINED CMAKE_FIND_FRAMEWORK)
+
+# Set up the default search directories for frameworks.
+if(PLATFORM_INT MATCHES "^MAC_CATALYST") 
+  set(CMAKE_FRAMEWORK_PATH
+          ${CMAKE_DEVELOPER_ROOT}/Library/PrivateFrameworks
+          ${CMAKE_OSX_SYSROOT_INT}/System/Library/Frameworks
+          ${CMAKE_OSX_SYSROOT_INT}/System/iOSSupport/System/Library/Frameworks
+          ${CMAKE_FRAMEWORK_PATH} CACHE INTERNAL "")
+else()
+  set(CMAKE_FRAMEWORK_PATH
+          ${CMAKE_DEVELOPER_ROOT}/Library/PrivateFrameworks
+          ${CMAKE_OSX_SYSROOT_INT}/System/Library/Frameworks
+          ${CMAKE_FRAMEWORK_PATH} CACHE INTERNAL "")
+endif()
+
+# By default, search both the specified iOS SDK and the remainder of the host filesystem.
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_PROGRAM)
+  set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM BOTH CACHE INTERNAL "")
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_LIBRARY)
+  set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY BOTH CACHE INTERNAL "")
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_INCLUDE)
+  set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE BOTH CACHE INTERNAL "")
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_PACKAGE)
+  set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE BOTH CACHE INTERNAL "")
+endif()
+
+#
+# Some helper-macros below to simplify and beautify the CMakeFile
+#
+
+# This little macro lets you set any Xcode specific property.
+macro(set_xcode_property TARGET XCODE_PROPERTY XCODE_VALUE XCODE_RELVERSION)
+  set(XCODE_RELVERSION_I "${XCODE_RELVERSION}")
+  if(XCODE_RELVERSION_I STREQUAL "All")
+    set_property(TARGET ${TARGET} PROPERTY XCODE_ATTRIBUTE_${XCODE_PROPERTY} "${XCODE_VALUE}")
+  else()
+    set_property(TARGET ${TARGET} PROPERTY XCODE_ATTRIBUTE_${XCODE_PROPERTY}[variant=${XCODE_RELVERSION_I}] "${XCODE_VALUE}")
+  endif()
+endmacro(set_xcode_property)
+
+# This macro lets you find executable programs on the host system.
+macro(find_host_package)
+  set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+  set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY NEVER)
+  set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE NEVER)
+  set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE NEVER)
+  set(_TOOLCHAIN_IOS ${IOS})
+  set(IOS OFF)
+  find_package(${ARGN})
+  set(IOS ${_TOOLCHAIN_IOS})
+  set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM BOTH)
+  set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY BOTH)
+  set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE BOTH)
+  set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE BOTH)
+endmacro(find_host_package)
\ No newline at end of file
diff --git a/src/3rd_party/CMakeLists.txt b/src/3rd_party/CMakeLists.txt
index 838951c50..f586d6ec4 100644
--- a/src/3rd_party/CMakeLists.txt
+++ b/src/3rd_party/CMakeLists.txt
@@ -9,10 +9,23 @@ add_subdirectory(./faiss)
 include_directories(./faiss)
 
 if(COMPILE_CPU)
-  if(NOT GENERATE_MARIAN_INSTALL_TARGETS)
+  # intgemm is not ARM-compatible.  do not build it if we are on ARM
+  if(NOT GENERATE_MARIAN_INSTALL_TARGETS AND NOT ARM)
     set(INTGEMM_DONT_BUILD_TESTS ON CACHE BOOL "Disable intgemm tests")
     add_subdirectory(./intgemm)
   endif()
+
+  # the default codepath does not use ruy so there is no need to add these directories 
+  # to the build unless it is explicitly enabled. RUY is intended mostly for ARM support
+  if(USE_RUY_SGEMM)
+    set(CPUINFO_BUILD_MOCK_TESTS OFF CACHE BOOL " " FORCE)
+    set(CPUINFO_BUILD_BENCHMARKS OFF CACHE BOOL " " FORCE)
+    set(CPUINFO_BUILD_PKG_CONFIG OFF CACHE BOOL " " FORCE)
+    set(CPUINFO_BUILD_UNIT_TESTS OFF CACHE BOOL " " FORCE)
+    set(CPUINFO_BUILD_TOOLS      OFF CACHE BOOL " " FORCE)
+    add_subdirectory(ruy/third_party/cpuinfo EXCLUDE_FROM_ALL)
+    add_subdirectory(ruy EXCLUDE_FROM_ALL)
+  endif(USE_RUY_SGEMM)
 endif(COMPILE_CPU)
 
 if(USE_FBGEMM)
diff --git a/src/3rd_party/faiss/VectorTransform.cpp b/src/3rd_party/faiss/VectorTransform.cpp
index 103b0910e..22fecbf78 100644
--- a/src/3rd_party/faiss/VectorTransform.cpp
+++ b/src/3rd_party/faiss/VectorTransform.cpp
@@ -19,6 +19,12 @@
 
 using namespace faiss;
 
+#ifdef ARM
+// we use various AVX/SSE instructions in this file
+// simd_utils translates these into ARM/NEON compatible instructions
+#include "3rd_party/simd_utils/simd_utils.h"
+#endif
+
 
 extern "C" {
 
diff --git a/src/3rd_party/faiss/VectorTransform.h b/src/3rd_party/faiss/VectorTransform.h
index 5fc96bc46..e8689bc15 100644
--- a/src/3rd_party/faiss/VectorTransform.h
+++ b/src/3rd_party/faiss/VectorTransform.h
@@ -19,8 +19,10 @@
 
 #include <faiss/Index.h>
 #ifdef __APPLE__
+#ifndef ARM
 #include <x86intrin.h>
 #endif
+#endif
 
 
 namespace faiss {
diff --git a/src/3rd_party/ruy b/src/3rd_party/ruy
new file mode 160000
index 000000000..c04e5e52a
--- /dev/null
+++ b/src/3rd_party/ruy
@@ -0,0 +1 @@
+Subproject commit c04e5e52ae6b144f74ac032652e3c538bda15c9b
diff --git a/src/3rd_party/sentencepiece b/src/3rd_party/sentencepiece
index fb6f8e408..5978fc9eb 160000
--- a/src/3rd_party/sentencepiece
+++ b/src/3rd_party/sentencepiece
@@ -1 +1 @@
-Subproject commit fb6f8e408d2078ebfedc8ccc33985fef03c50b0e
+Subproject commit 5978fc9ebb6067a3a1b11370bf46b8da0f89e592
diff --git a/src/3rd_party/simd_utils b/src/3rd_party/simd_utils
new file mode 160000
index 000000000..fe9fa82c9
--- /dev/null
+++ b/src/3rd_party/simd_utils
@@ -0,0 +1 @@
+Subproject commit fe9fa82c9d7e6297913bc6c98fe079acc6e157e9
diff --git a/src/common/binary.cpp b/src/common/binary.cpp
index 6bb90c508..f8dc26f12 100644
--- a/src/common/binary.cpp
+++ b/src/common/binary.cpp
@@ -109,7 +109,7 @@ void loadItems(const std::string& fileName, std::vector<io::Item>& items) {
 
 io::Item getItem(const void* current, const std::string& varName) {
   std::vector<io::Item> items;
-  loadItems(current, items);
+  loadItems(current, items, /*mapped=*/true);
 
   for(auto& item : items)
     if(item.name == varName)
diff --git a/src/common/types.h b/src/common/types.h
index a0930a0f8..763edb09b 100644
--- a/src/common/types.h
+++ b/src/common/types.h
@@ -17,7 +17,11 @@
 #include <type_traits>
 
 #ifndef __CUDACC__ // NVCC is very unreliable when it comes to CPU intrinsics, we hide them completely from NVCC-compiled code
-#include <immintrin.h>
+  #ifndef ARM
+    #include <immintrin.h>
+  #else
+    #include "3rd_party/simd_utils/simd_utils.h"
+  #endif
 #endif
 
 #ifdef __CUDACC__ // nvcc is compiling this code
diff --git a/src/functional/operators.h b/src/functional/operators.h
index 3628fdcb9..e7dcea3c6 100644
--- a/src/functional/operators.h
+++ b/src/functional/operators.h
@@ -217,8 +217,11 @@ struct Ops<double> {
 // __CUDACC__ is defined when compiling with NVCC regardless of device type
 // __CUDA_ARCH__ is defined when compiling device (GPU) code
 #ifndef __CUDACC__
-
+#ifndef ARM
 #include "3rd_party/sse_mathfun.h"
+#else
+#include "3rd_party/simd_utils/simd_utils.h"
+#endif
 
 namespace marian {
 namespace functional {
diff --git a/src/tensors/cpu/expression_graph_packable.h b/src/tensors/cpu/expression_graph_packable.h
index 1a233372c..4af69fac9 100644
--- a/src/tensors/cpu/expression_graph_packable.h
+++ b/src/tensors/cpu/expression_graph_packable.h
@@ -152,7 +152,7 @@ class ExpressionGraphPackable : public ExpressionGraph {
 #endif
       } else if (isIntgemm(gemmElementType) &&
       (pName.find("_W") == pName.length() - 3 || pName.find("_W") == pName.length() - 2 /* || pName.find("Wemb") != std::string::npos*/)) {
-#if COMPILE_CPU
+#if COMPILE_CPU && !defined(ARM)
         using cpu::integer::cols;
         using cpu::integer::rows;
         auto allocator = New<TensorAllocator>(getBackend());
diff --git a/src/tensors/cpu/fbgemm/packed_gemm.cpp b/src/tensors/cpu/fbgemm/packed_gemm.cpp
index dd81d0f7f..23ed559f1 100644
--- a/src/tensors/cpu/fbgemm/packed_gemm.cpp
+++ b/src/tensors/cpu/fbgemm/packed_gemm.cpp
@@ -2,16 +2,16 @@
 #include "tensors/tensor_allocator.h"
 #include "tensors/tensor_operators.h"
 
-#include <emmintrin.h>
-#include <immintrin.h>
-#include <tmmintrin.h>
-#include <xmmintrin.h>
 #include <cassert>
 #include <cstddef>
 #include <unordered_map>
 //#include <chrono>
 
 #if USE_FBGEMM
+#include <emmintrin.h>
+#include <immintrin.h>
+#include <tmmintrin.h>
+#include <xmmintrin.h>
 #ifdef _MSC_VER
 #pragma warning(disable: 4505) // 'fbgemmAlignedAlloc' in fbgemm.h: unreferenced local function has been removed (missing 'static inline')
 #pragma warning(disable: 4251) // 'fbgemm::CompressedSparseColumn::colptr_': class 'std::vector<int,std::allocator<_Ty>>' needs to have dll-interface to be used by clients of class 'fbgemm::CompressedSparseColumn'
diff --git a/src/tensors/cpu/integer_common.h b/src/tensors/cpu/integer_common.h
index f4e632b5c..8a00a7870 100644
--- a/src/tensors/cpu/integer_common.h
+++ b/src/tensors/cpu/integer_common.h
@@ -5,7 +5,7 @@
 #include "tensors/cpu/aligned.h"
 #include "common/io_item.h"
 
-#if COMPILE_CPU
+#if COMPILE_CPU && !defined(ARM)
 #include "3rd_party/intgemm/intgemm/intgemm.h"
 #else
 namespace intgemm {
@@ -31,10 +31,12 @@ namespace intgemm {
 }
 #endif
 
+#ifndef ARM
 #include <emmintrin.h>
 #include <immintrin.h>
 #include <tmmintrin.h>
 #include <xmmintrin.h>
+#endif
 #include <cassert>
 #include <cstddef>
 
@@ -98,7 +100,7 @@ template <> struct intgemm_<Type::intgemm16avx512> {
 
 template <Type vtype>
 static inline float& getQuantMult(marian::Tensor val) {
-#if COMPILE_CPU
+#if COMPILE_CPU && !defined(ARM)
   ABORT_IF(!isIntgemm(val->type()), "getQuantMult does not work for type {}", val->type());
   typedef typename intgemm_<vtype>::type Integer;
   return *(reinterpret_cast<float*>(val->data<Integer>() + val->shape().elements()));
@@ -109,7 +111,7 @@ static inline float& getQuantMult(marian::Tensor val) {
 }
 
 static inline Type getIntgemmType(Type vtype) {
-#if COMPILE_CPU
+#if COMPILE_CPU && !defined(ARM)
   if (vtype == Type::intgemm8) {
     if (intgemm::kCPU == intgemm::CPUType::AVX512VNNI) {
       return Type::intgemm8avx512vnni;
@@ -142,7 +144,7 @@ static inline Type getIntgemmType(Type vtype) {
 }
 
 static inline bool passOrAbort(Type vtype) {
-#if COMPILE_CPU
+#if COMPILE_CPU && !defined(ARM)
   if (vtype == Type::intgemm8 || vtype == Type::intgemm16) {
     return true;
   } else if (vtype == Type::intgemm16sse2) {
@@ -166,7 +168,7 @@ static inline bool passOrAbort(Type vtype) {
 
 template <Type vtype>
 static inline float computeQuantMult(marian::Tensor val) {
-#if COMPILE_CPU
+#if COMPILE_CPU && !defined(ARM)
   if(sizeOf(vtype) == 1)
     return 127.0f / intgemm::MaxAbsolute(val->data(), val->data() + val->shape().elements());
   else if(sizeOf(vtype) == 2)
@@ -186,7 +188,7 @@ void AddBias(marian::Tensor C, const marian::Tensor Bias);
 // in our binary format. Then we copy the quantizationMultiplier information at the end
 template<Type vtype>
 void prepareAndTransposeB(io::Item& item, const char * input) {
-#if COMPILE_CPU
+#if COMPILE_CPU && !defined(ARM)
     typedef typename intgemm_<vtype>::type Integer;
     Integer * output_tensor = reinterpret_cast<Integer *>(&(*item.bytes.begin()));
     // Sometimes we will end up with misaligned intput (and output) so we can't use them directly.
diff --git a/src/tensors/cpu/intgemm_interface.h b/src/tensors/cpu/intgemm_interface.h
index 88408aa18..80784e0f6 100644
--- a/src/tensors/cpu/intgemm_interface.h
+++ b/src/tensors/cpu/intgemm_interface.h
@@ -9,7 +9,7 @@ namespace marian {
 namespace cpu {
 namespace integer {
 
-#if COMPILE_CPU
+#if COMPILE_CPU && !defined(ARM)
 /*
  * Prepare an activation matrix into intgemm8/16 format. For now the activation matrix is just quantized.
  * Expr input: The input tensor
@@ -45,7 +45,7 @@ static inline Expr prepareA(Expr a) {
  */
 template<Type vtype>
 static inline Expr affineOrDotTyped(Expr a, Expr bQuant, Expr bias, bool transA, bool /*transB*/, float scale) {
-#if COMPILE_CPU
+#if COMPILE_CPU && !defined(ARM)
   ABORT_IF(!isFloat(a->value_type()), "Intgemm expects type of A to be float32 not {}", a->value_type());
   ABORT_IF(!isIntgemm(bQuant->value_type()), "Intgemm expects type of B to be a variant of intgemm not {}", bQuant->value_type());
 
diff --git a/src/tensors/cpu/prod.cpp b/src/tensors/cpu/prod.cpp
index 8fcca924b..639027d05 100755
--- a/src/tensors/cpu/prod.cpp
+++ b/src/tensors/cpu/prod.cpp
@@ -7,14 +7,6 @@
 #include "tensors/tensor.h"
 #include "tensors/tensor_allocator.h"
 
-#if MKL_FOUND
-#include <mkl.h>
-#else
-#if BLAS_FOUND
-#include <cblas.h>
-#endif
-#endif
-
 #include "integer_common.h"
 #include "prod_blas.h"
 
diff --git a/src/tensors/cpu/prod_blas.h b/src/tensors/cpu/prod_blas.h
index a591fdd26..a281aa7bf 100644
--- a/src/tensors/cpu/prod_blas.h
+++ b/src/tensors/cpu/prod_blas.h
@@ -1,11 +1,117 @@
+#pragma once
 #if MKL_FOUND
-#include <mkl.h>
-#else
-#if BLAS_FOUND
-#include <cblas.h>
-#endif
+    #include <mkl.h>
+#elif BLAS_FOUND
+    #include <cblas.h>
+#elif USE_RUY_SGEMM
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wcomment"
+    #include "ruy/ruy.h"
+    #include "ruy/system_aligned_alloc.h"
+#pragma GCC pop
 #endif
 
+#if USE_RUY_SGEMM
+// AlignedVector allocates aligned memory and cleans up after itself. RAII
+// wrapper similar to intgemm's AlignedVector.
+template <class T>
+class AlignedVector {
+public:
+  AlignedVector(size_t num_elem)
+      : size_(num_elem),
+        storage_(reinterpret_cast<T *>(ruy::detail::SystemAlignedAlloc(sizeof(T) * num_elem))) {}
+
+  T *begin() { return storage_; }
+  T *data() { return storage_; }
+  size_t size() const { return size_; }
+  size_t memSize() const { return sizeof(T) * size_; }
+
+  // Forbid copy
+  AlignedVector(const AlignedVector &) = delete;
+  AlignedVector &operator=(const AlignedVector &) = delete;
+
+  ~AlignedVector() { ruy::detail::SystemAlignedFree(reinterpret_cast<void *>(storage_)); }
+
+private:
+  size_t size_;
+  T *storage_;
+};
+
+
+inline void GemmRuy(const bool transA,
+                    const bool transB,
+                    const int M,
+                    const int N,
+                    const int K,
+                    const float alpha,
+                    const float *A,
+                    const int lda,
+                    const float *B,
+                    const int ldb,
+                    const float beta,
+                    float *C,
+                    const int ldc) {
+  ruy::Context context;
+
+  // If we need to transpose, we can swap dimensions in layout claim the matrix
+  // is just column-major. Set ordering so transpose.
+  const auto orderA = (transA ? ruy::Order::kColMajor : ruy::Order::kRowMajor);
+  const auto orderB = (transB ? ruy::Order::kColMajor : ruy::Order::kRowMajor);
+
+  ruy::Matrix<float> lhs;
+  ruy::MakeSimpleLayout(M, K, orderA, lhs.mutable_layout());
+  lhs.set_data(A);
+
+  ruy::Matrix<float> rhs;
+  ruy::MakeSimpleLayout(K, N, orderB, rhs.mutable_layout());
+  rhs.set_data(B);
+
+  ruy::Matrix<float> dst;
+  ruy::MakeSimpleLayout(M, N, ruy::Order::kRowMajor, dst.mutable_layout());
+
+  if(beta == 0) {
+    // For beta = 0, we want to avoid the additional allocation. This is a
+    // large amount of our inference use-cases. sgemm is called with `beta` for
+    // accumulating gradients in backpropogation, which is 0.0 during
+    // inference.
+
+    dst.set_data(C);
+    ruy::MulParams<float, float> mul_params;
+    ruy::Mul(lhs, rhs, mul_params, &context, &dst);
+
+    if(alpha != 1.0) {
+        // Write out C as C = alpha * [op(A) * op(B)] + beta * C
+        // Can we expect the compiler to autovectorize this?
+        // TODO: Come back and explicitly use SIMD.
+        const size_t size    = M * N;
+        const float *opA_opB = C;  // Alias.
+        for(size_t i = 0; i < size; i++) {
+          C[i] = alpha * opA_opB[i];
+        }
+    }
+
+  } else {
+    // No multiply-add in Ruy
+    // See also: https://github.com/google/ruy/issues/307
+
+    AlignedVector<float> intermediate(M * N);
+    dst.set_data(intermediate.data());
+    ruy::MulParams<float, float> mul_params;
+    ruy::Mul(lhs, rhs, mul_params, &context, &dst);
+
+    // Write out C as C = alpha * [op(A) * op(B)] + beta * C
+    // Can we expect the compiler to autovectorize this?
+    // TODO: Come back and explicitly use SIMD.
+    const size_t size    = M * N;
+    const float *opA_opB = intermediate.data();
+    for(size_t i = 0; i < size; i++) {
+      C[i] = alpha * opA_opB[i] + beta * C[i];
+    }
+  }
+}
+
+#endif // RUY_SGEMM
+
 inline void sgemm(bool transA,
                   bool transB,
                   int rows_a,
@@ -34,6 +140,20 @@ inline void sgemm(bool transA,
               beta,
               c,
               ldc);
+#elif USE_RUY_SGEMM
+        GemmRuy(transA,
+                transB,
+                rows_a,
+                rows_b,
+                width,
+                alpha,
+                a,
+                lda,
+                b,
+                ldb,
+                beta,
+                c,
+                ldc);
 #else
     transA; transB; rows_a; rows_b; width; alpha; a; lda; b; ldb; beta; c; ldc; // make compiler happy
     ABORT("Marian must be compiled with a BLAS library");
diff --git a/src/translator/translator.h b/src/translator/translator.h
index f0fc0b908..abb5a5775 100644
--- a/src/translator/translator.h
+++ b/src/translator/translator.h
@@ -248,6 +248,9 @@ class TranslateService : public ModelServiceTask {
 
   size_t numDevices_;
 
+  std::vector<mio::mmap_source> model_mmaps_; // map
+  std::vector<std::vector<io::Item>> model_items_; // non-mmap
+
 public:
   virtual ~TranslateService() {}
 
@@ -282,36 +285,62 @@ class TranslateService : public ModelServiceTask {
     auto devices = Config::getDevices(options_);
     numDevices_ = devices.size();
 
+    ThreadPool threadPool(numDevices_, numDevices_);
+    scorers_.resize(numDevices_);
+    graphs_.resize(numDevices_);
+    
     // preload models
-    std::vector<std::vector<io::Item>> model_items_;
     auto models = options->get<std::vector<std::string>>("models");
-    for(auto model : models) {
-      auto items = io::loadItems(model);
-      model_items_.push_back(std::move(items));
+    if(options_->get<bool>("model-mmap", false)) {
+      for(auto model : models) {
+        ABORT_IF(!io::isBin(model), "Non-binarized models cannot be mmapped");
+        LOG(info, "Loading model from {}", model);
+        model_mmaps_.push_back(mio::mmap_source(model));
+      }
+    }
+    else {
+      for(auto model : models) {
+        LOG(info, "Loading model from {}", model);
+        auto items = io::loadItems(model);
+        model_items_.push_back(std::move(items));
+      }
     }
 
     // initialize scorers
+    size_t id = 0;
     for(auto device : devices) {
-      auto graph = New<ExpressionGraph>(true);
-
-      auto precison = options_->get<std::vector<std::string>>("precision", {"float32"});
-      graph->setDefaultElementType(typeFromString(precison[0])); // only use first type, used for parameter type in graph
-      graph->setDevice(device);
-      if (device.type == DeviceType::cpu) {
-        graph->getBackend()->setOptimized(options_->get<bool>("optimize"));
-        graph->getBackend()->setGemmType(options_->get<std::string>("gemm-type"));
-        graph->getBackend()->setQuantizeRange(options_->get<float>("quantize-range"));
-      }
-      graph->reserveWorkspaceMB(options_->get<int>("workspace"));
-      graphs_.push_back(graph);
-
-      auto scorers = createScorers(options_, model_items_);
-      for(auto scorer : scorers) {
-        scorer->init(graph);
-        if(shortlistGenerator_)
-          scorer->setShortlistGenerator(shortlistGenerator_);
-      }
-      scorers_.push_back(scorers);
+      auto task = [&](DeviceId device, size_t id) {
+        auto graph = New<ExpressionGraph>(true);
+        auto prec = options_->get<std::vector<std::string>>("precision", {"float32"});
+        graph->setDefaultElementType(typeFromString(prec[0]));
+        graph->setDevice(device);
+        if (device.type == DeviceType::cpu) {
+          graph->getBackend()->setOptimized(options_->get<bool>("optimize"));
+          graph->getBackend()->setGemmType(options_->get<std::string>("gemm-type"));
+          graph->getBackend()->setQuantizeRange(options_->get<float>("quantize-range"));
+        }
+        graph->reserveWorkspaceMB(options_->get<int>("workspace"));
+        graphs_[id] = graph;
+
+        std::vector<Ptr<Scorer>> scorers;
+        if(options_->get<bool>("model-mmap", false)) {
+          scorers = createScorers(options_, model_mmaps_);
+        }
+        else {
+          scorers = createScorers(options_, model_items_);
+        }
+
+        for(auto scorer : scorers) {
+          scorer->init(graph);
+          if(shortlistGenerator_)
+            scorer->setShortlistGenerator(shortlistGenerator_);
+        }
+
+        scorers_[id] = scorers;
+        graph->forward();
+      };
+
+      threadPool.enqueue(task, device, id++);
     }
   }