--- /dev/null
+# 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 "")