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[CMake] Update CMake cache file for the ARM/Aarch64 cross toolchain builds. NFC. #94835

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Jun 8, 2024
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[CMake] Update CMake cache file for the ARM/Aarch64 cross toolchain builds. NFC. #94835

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45 changes: 31 additions & 14 deletions clang/cmake/caches/CrossWinToARMLinux.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -6,21 +6,23 @@
# on Windows platform.
#
# NOTE: the build requires a development ARM Linux root filesystem to use
# proper target platform depended library and header files:
# - create <full-path-to-clang-configs> directory and put the clang configuration
# file named <TOOLCHAIN_TARGET_TRIPLE>.cfg into it.
# - add the `--sysroot=<path-to-develop-arm-linux-root-fs>` argument into
# this configuration file.
# - add other necessary target depended clang arguments there,
# such as '-mcpu=cortex-a78' & etc.
# proper target platform depended library and header files.
#
# The build generates a proper clang configuration file with stored
# --sysroot argument for specified target triple. Also it is possible
# to specify configuration path via CMake arguments, such as
# -DCLANG_CONFIG_FILE_USER_DIR=<full-path-to-clang-configs>
# and/or
# -DCLANG_CONFIG_FILE_SYSTEM_DIR=<full-path-to-clang-configs>
#
# See more details here: https://clang.llvm.org/docs/UsersManual.html#configuration-files
#
# Configure:
# cmake -G Ninja ^
# -DTOOLCHAIN_TARGET_TRIPLE=aarch64-unknown-linux-gnu ^
# -DTOOLCHAIN_TARGET_SYSROOTFS=<path-to-develop-arm-linux-root-fs> ^
# -DTOOLCHAIN_SHARED_LIBS=OFF ^
# -DCMAKE_INSTALL_PREFIX=../install ^
# -DCLANG_CONFIG_FILE_USER_DIR=<full-path-to-clang-configs> ^
# -DCMAKE_CXX_FLAGS="-D__OPTIMIZE__" ^
# -DREMOTE_TEST_HOST="<hostname>" ^
# -DREMOTE_TEST_USER="<ssh_user_name>" ^
Expand Down Expand Up @@ -81,6 +83,20 @@ endif()

message(STATUS "Toolchain target triple: ${TOOLCHAIN_TARGET_TRIPLE}")

if (DEFINED TOOLCHAIN_TARGET_SYSROOTFS)
message(STATUS "Toolchain target sysroot: ${TOOLCHAIN_TARGET_SYSROOTFS}")
# Store the --sysroot argument for the compiler-rt test flags.
set(sysroot_flags --sysroot='${TOOLCHAIN_TARGET_SYSROOTFS}')
# Generate the clang configuration file for the specified target triple
# and store --sysroot in this file.
file(WRITE "${CMAKE_BINARY_DIR}/bin/${TOOLCHAIN_TARGET_TRIPLE}.cfg" ${sysroot_flags})
endif()

# Build the shared libraries for libc++/libc++abi/libunwind.
if (NOT DEFINED TOOLCHAIN_SHARED_LIBS)
set(TOOLCHAIN_SHARED_LIBS OFF)
endif()

if (NOT DEFINED LLVM_TARGETS_TO_BUILD)
if ("${TOOLCHAIN_TARGET_TRIPLE}" MATCHES "^(armv|arm32)+")
set(LLVM_TARGETS_TO_BUILD "ARM" CACHE STRING "")
Expand Down Expand Up @@ -183,20 +199,21 @@ set(RUNTIMES_${TOOLCHAIN_TARGET_TRIPLE}_COMPILER_RT_CAN_EXECUTE_TESTS

set(RUNTIMES_${TOOLCHAIN_TARGET_TRIPLE}_COMPILER_RT_USE_BUILTINS_LIBRARY ON CACHE BOOL "")
set(RUNTIMES_${TOOLCHAIN_TARGET_TRIPLE}_COMPILER_RT_CXX_LIBRARY libcxx CACHE STRING "")
# Tell Clang to seach C++ headers alongside with the just-built binaries for the C++ compiler-rt tests.
set(RUNTIMES_${TOOLCHAIN_TARGET_TRIPLE}_COMPILER_RT_TEST_COMPILER_CFLAGS "--stdlib=libc++" CACHE STRING "")

# The compiler-rt tests disable the clang configuration files during the execution by setting CLANG_NO_DEFAULT_CONFIG=1
# and drops out the --sysroot from there. Provide it explicity via the test flags here if target sysroot has been specified.
set(RUNTIMES_${TOOLCHAIN_TARGET_TRIPLE}_COMPILER_RT_TEST_COMPILER_CFLAGS "--stdlib=libc++ ${sysroot_flags}" CACHE STRING "")

set(RUNTIMES_${TOOLCHAIN_TARGET_TRIPLE}_LIBUNWIND_USE_COMPILER_RT ON CACHE BOOL "")
set(RUNTIMES_${TOOLCHAIN_TARGET_TRIPLE}_LIBUNWIND_ENABLE_SHARED OFF CACHE BOOL "")
set(RUNTIMES_${TOOLCHAIN_TARGET_TRIPLE}_LIBUNWIND_ENABLE_SHARED ${TOOLCHAIN_SHARED_LIBS} CACHE BOOL "")

set(RUNTIMES_${TOOLCHAIN_TARGET_TRIPLE}_LIBCXXABI_USE_LLVM_UNWINDER ON CACHE BOOL "")
set(RUNTIMES_${TOOLCHAIN_TARGET_TRIPLE}_LIBCXXABI_ENABLE_STATIC_UNWINDER ON CACHE BOOL "")
set(RUNTIMES_${TOOLCHAIN_TARGET_TRIPLE}_LIBCXXABI_USE_COMPILER_RT ON CACHE BOOL "")
set(RUNTIMES_${TOOLCHAIN_TARGET_TRIPLE}_LIBCXXABI_ENABLE_NEW_DELETE_DEFINITIONS OFF CACHE BOOL "")
set(RUNTIMES_${TOOLCHAIN_TARGET_TRIPLE}_LIBCXXABI_ENABLE_SHARED OFF CACHE BOOL "")
set(RUNTIMES_${TOOLCHAIN_TARGET_TRIPLE}_LIBCXXABI_ENABLE_SHARED ${TOOLCHAIN_SHARED_LIBS} CACHE BOOL "")

set(RUNTIMES_${TOOLCHAIN_TARGET_TRIPLE}_LIBCXX_USE_COMPILER_RT ON CACHE BOOL "")
set(RUNTIMES_${TOOLCHAIN_TARGET_TRIPLE}_LIBCXX_ENABLE_SHARED OFF CACHE BOOL "")
set(RUNTIMES_${TOOLCHAIN_TARGET_TRIPLE}_LIBCXX_ENABLE_SHARED ${TOOLCHAIN_SHARED_LIBS} CACHE BOOL "")
set(RUNTIMES_${TOOLCHAIN_TARGET_TRIPLE}_LIBCXX_ABI_VERSION ${LIBCXX_ABI_VERSION} CACHE STRING "")
set(RUNTIMES_${TOOLCHAIN_TARGET_TRIPLE}_LIBCXX_CXX_ABI "libcxxabi" CACHE STRING "") #!!!
set(RUNTIMES_${TOOLCHAIN_TARGET_TRIPLE}_LIBCXX_ENABLE_NEW_DELETE_DEFINITIONS ON CACHE BOOL "")
Expand Down
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