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# 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__" ^
# -DREMOTE_TEST_HOST="<hostname>" ^
# -DREMOTE_TEST_USER="<ssh_user_name>" ^
# -C<llvm_src_root>/llvm-project/clang/cmake/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 "${DEFAULT_SYSROOT}" CACHE STRING "")
set(LIBCXXABI_LINK_TESTS_WITH_SHARED_LIBCXXABI OFF CACHE BOOL "")
set(LIBCXXABI_LINK_TESTS_WITH_SHARED_LIBCXX OFF CACHE BOOL "")
set(LIBCXX_USE_COMPILER_RT ON CACHE BOOL "")
set(LIBCXX_TARGET_TRIPLE "${CMAKE_C_COMPILER_TARGET}" CACHE STRING "")
set(LIBCXX_SYSROOT "${DEFAULT_SYSROOT}" CACHE STRING "")
set(LIBCXX_ENABLE_SHARED OFF CACHE BOOL "")
set(BUILTINS_CMAKE_ARGS "-DCMAKE_SYSTEM_NAME=Linux;-DCMAKE_AR=${CMAKE_AR}" CACHE STRING "")
set(RUNTIMES_CMAKE_ARGS "-DCMAKE_SYSTEM_NAME=Linux;-DCMAKE_AR=${CMAKE_AR}" CACHE STRING "")
# Remote test configuration.
if(DEFINED REMOTE_TEST_HOST)
set(DEFAULT_TEST_EXECUTOR "SSHExecutor('${REMOTE_TEST_HOST}', '${REMOTE_TEST_USER}')")
set(DEFAULT_TEST_TARGET_INFO "libcxx.test.target_info.LinuxLocalTI")
# Allow override with the custom values.
if(NOT DEFINED LIBUNWIND_TARGET_INFO)
set(LIBUNWIND_TARGET_INFO "${DEFAULT_TEST_TARGET_INFO}" CACHE STRING "")
endif()
if(NOT DEFINED LIBUNWIND_EXECUTOR)
set(LIBUNWIND_EXECUTOR "${DEFAULT_TEST_EXECUTOR}" CACHE STRING "")
endif()
if(NOT DEFINED LIBCXXABI_TARGET_INFO)
set(LIBCXXABI_TARGET_INFO "${DEFAULT_TEST_TARGET_INFO}" CACHE STRING "")
endif()
if(NOT DEFINED LIBCXXABI_EXECUTOR)
set(LIBCXXABI_EXECUTOR "${DEFAULT_TEST_EXECUTOR}" CACHE STRING "")
endif()
if(NOT DEFINED LIBCXX_TARGET_INFO)
set(LIBCXX_TARGET_INFO "${DEFAULT_TEST_TARGET_INFO}" CACHE STRING "")
endif()
if(NOT DEFINED LIBCXX_EXECUTOR)
set(LIBCXX_EXECUTOR "${DEFAULT_TEST_EXECUTOR}" CACHE STRING "")
endif()
endif()
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 "")
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