diff --git a/clang/cmake/caches/CrossWinToARMLinux.cmake b/clang/cmake/caches/CrossWinToARMLinux.cmake
new file mode 100644
--- /dev/null
+++ b/clang/cmake/caches/CrossWinToARMLinux.cmake
@@ -0,0 +1,109 @@
+# CrossWinToARMLinux.cmake
+#
+# Set up a CMakeCache for a cross Windows to ARM Linux toolchain build.
+#
+# This cache file can be used to build a cross toolchain to ARM Linux
+# on Windows platform.
+#
+# NOTE: the build requires a development ARM Linux root filesystem to use
+# proper target platform depended library and header files.
+#
+# Configure:
+#  cmake -G Ninja ^
+#       -DCMAKE_INSTALL_PREFIX=../install ^
+#       -DDEFAULT_SYSROOT=<path-to-develop-arm-linux-root-fs> ^
+#       -DLLVM_AR=<llvm_obj_root>/bin/llvm-ar[.exe] ^
+#       -DCMAKE_CXX_FLAGS="-D__OPTIMIZE__" ^
+#       -C<llvm_src_root>/llvm-project/clang/caches/CrossWinToARMLinux.cmake ^
+#       <llvm_src_root>/llvm-project/llvm
+# Build:
+#  cmake --build . --target install
+# Test:
+#  cmake --build . --target check-llvm
+#  cmake --build . --target check-clang
+#  cmake --build . --target check-lld
+
+if (NOT DEFINED DEFAULT_SYSROOT)
+  message(WARNING "DEFAULT_SYSROOT must be specified for the cross toolchain build.")
+endif()
+
+if (DEFINED LLVM_AR)
+  set(CMAKE_AR "${LLVM_AR}" CACHE STRING "")
+endif()
+
+if (NOT DEFINED LLVM_TARGETS_TO_BUILD)
+  set(LLVM_TARGETS_TO_BUILD "ARM" CACHE STRING "")
+endif()
+
+if (NOT DEFINED CMAKE_C_COMPILER_TARGET)
+  # Required if COMPILER_RT_DEFAULT_TARGET_ONLY is ON
+  set(CMAKE_C_COMPILER_TARGET "armv7-linux-gnueabihf" CACHE STRING "")
+endif()
+
+if (NOT DEFINED CMAKE_BUILD_TYPE)
+  set(CMAKE_BUILD_TYPE "Release" CACHE STRING "")
+endif()
+
+set(CMAKE_CROSSCOMPILING                    ON CACHE BOOL "")
+set(CMAKE_CL_SHOWINCLUDES_PREFIX            "Note: including file: " CACHE STRING "")
+
+set(LLVM_ENABLE_ASSERTIONS                  ON CACHE BOOL "")
+set(LLVM_ENABLE_PROJECTS                    "clang;clang-tools-extra;lld" CACHE STRING "")
+set(LLVM_ENABLE_RUNTIMES                    "compiler-rt;libunwind;libcxxabi;libcxx" CACHE STRING "")
+set(LLVM_DEFAULT_TARGET_TRIPLE              "${CMAKE_C_COMPILER_TARGET}" CACHE STRING "")
+set(LLVM_TARGET_ARCH                        "${CMAKE_C_COMPILER_TARGET}" CACHE STRING "")
+set(LLVM_LIT_ARGS                           "-vv ${LLVM_LIT_ARGS}" CACHE STRING "" FORCE)
+
+set(CLANG_DEFAULT_LINKER                    "lld" CACHE STRING "")
+
+set(COMPILER_RT_BUILD_BUILTINS              ON CACHE BOOL "")
+set(COMPILER_RT_BUILD_SANITIZERS            OFF CACHE BOOL "")
+set(COMPILER_RT_BUILD_XRAY                  OFF CACHE BOOL "")
+set(COMPILER_RT_BUILD_LIBFUZZER             OFF CACHE BOOL "")
+set(COMPILER_RT_BUILD_PROFILE               OFF CACHE BOOL "")
+set(COMPILER_RT_DEFAULT_TARGET_ONLY         ON CACHE BOOL "")
+
+set(LIBUNWIND_USE_COMPILER_RT               ON CACHE BOOL "")
+set(LIBUNWIND_TARGET_TRIPLE                 "${CMAKE_C_COMPILER_TARGET}" CACHE STRING "")
+set(LIBUNWIND_SYSROOT                       "${DEFAULT_SYSROOT}" CACHE STRING "")
+set(LIBUNWIND_ENABLE_SHARED                 OFF CACHE BOOL "")
+
+set(LIBCXXABI_USE_LLVM_UNWINDER             ON CACHE BOOL "")
+set(LIBCXXABI_ENABLE_STATIC_UNWINDER        ON CACHE BOOL "")
+set(LIBCXXABI_USE_COMPILER_RT               ON CACHE BOOL "")
+set(LIBCXXABI_ENABLE_NEW_DELETE_DEFINITIONS OFF CACHE BOOL "")
+set(LIBCXXABI_TARGET_TRIPLE                 "${CMAKE_C_COMPILER_TARGET}" CACHE STRING "")
+set(LIBCXXABI_SYSROOT                       "${DEFAULT_SYSROOT}" CACHE STRING "")
+
+set(LIBCXX_USE_COMPILER_RT                  ON CACHE BOOL "")
+set(LIBCXX_TARGET_TRIPLE                    "${CMAKE_C_COMPILER_TARGET}" CACHE STRING "")
+set(LIBCXX_SYSROOT                          "${DEFAULT_SYSROOT}" CACHE STRING "")
+
+set(BUILTINS_CMAKE_ARGS                     "-DCMAKE_SYSTEM_NAME=Linux;-DCMAKE_AR=${CMAKE_AR}" CACHE STRING "")
+set(RUNTIMES_CMAKE_ARGS                     "-DCMAKE_SYSTEM_NAME=Linux;-DCMAKE_AR=${CMAKE_AR}" CACHE STRING "")
+
+set(LLVM_INSTALL_TOOLCHAIN_ONLY 			ON CACHE BOOL "")
+set(LLVM_TOOLCHAIN_TOOLS
+  llvm-ar
+  llvm-cov
+  llvm-cxxfilt
+  llvm-dwarfdump
+  llvm-lib
+  llvm-nm
+  llvm-objdump
+  llvm-profdata
+  llvm-ranlib
+  llvm-readobj
+  llvm-size
+  llvm-symbolizer
+  CACHE STRING "")
+
+set(LLVM_DISTRIBUTION_COMPONENTS
+  clang
+  lld
+  LTO
+  clang-format
+  builtins
+  runtimes
+  ${LLVM_TOOLCHAIN_TOOLS}
+  CACHE STRING "")