Files
libcxx/cmake/Modules/HandleCompilerRT.cmake
Petr Hosek cebb3e984f [CMake][libcxx] Fix the --target and --gcc-toolchain flag handling
CMake has the problem with the single dash variant because of the
space, so use the double dash with equal sign version. We also
don't have to pass the target triple when checking for compiler-rt
since that flag is already included in compile flags now.

Differential Revision: https://reviews.llvm.org/D32068

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@300409 91177308-0d34-0410-b5e6-96231b3b80d8
2017-04-16 02:25:55 +00:00

59 lines
2.1 KiB
CMake

function(find_compiler_rt_library name dest)
if (NOT DEFINED LIBCXX_COMPILE_FLAGS)
message(FATAL_ERROR "LIBCXX_COMPILE_FLAGS must be defined when using this function")
endif()
set(dest "" PARENT_SCOPE)
set(CLANG_COMMAND ${CMAKE_CXX_COMPILER} ${LIBCXX_COMPILE_FLAGS}
"--rtlib=compiler-rt" "--print-libgcc-file-name")
if (CMAKE_CXX_COMPILER_ID MATCHES Clang AND CMAKE_CXX_COMPILER_TARGET)
list(APPEND CLANG_COMMAND "--target=${CMAKE_CXX_COMPILER_TARGET}")
endif()
execute_process(
COMMAND ${CLANG_COMMAND}
RESULT_VARIABLE HAD_ERROR
OUTPUT_VARIABLE LIBRARY_FILE
)
string(STRIP "${LIBRARY_FILE}" LIBRARY_FILE)
string(REPLACE "builtins" "${name}" LIBRARY_FILE "${LIBRARY_FILE}")
if (NOT HAD_ERROR AND EXISTS "${LIBRARY_FILE}")
message(STATUS "Found compiler-rt library: ${LIBRARY_FILE}")
set(${dest} "${LIBRARY_FILE}" PARENT_SCOPE)
else()
message(STATUS "Failed to find compiler-rt library")
endif()
endfunction()
function(find_compiler_rt_dir dest)
if (NOT DEFINED LIBCXX_COMPILE_FLAGS)
message(FATAL_ERROR "LIBCXX_COMPILE_FLAGS must be defined when using this function")
endif()
set(dest "" PARENT_SCOPE)
if (APPLE)
set(CLANG_COMMAND ${CMAKE_CXX_COMPILER} ${LIBCXX_COMPILE_FLAGS}
"-print-file-name=lib")
execute_process(
COMMAND ${CLANG_COMMAND}
RESULT_VARIABLE HAD_ERROR
OUTPUT_VARIABLE LIBRARY_DIR
)
string(STRIP "${LIBRARY_DIR}" LIBRARY_DIR)
set(LIBRARY_DIR "${LIBRARY_DIR}/darwin")
else()
set(CLANG_COMMAND ${CMAKE_CXX_COMPILER} ${LIBCXX_COMPILE_FLAGS}
"--rtlib=compiler-rt" "--print-libgcc-file-name")
execute_process(
COMMAND ${CLANG_COMMAND}
RESULT_VARIABLE HAD_ERROR
OUTPUT_VARIABLE LIBRARY_FILE
)
string(STRIP "${LIBRARY_FILE}" LIBRARY_FILE)
get_filename_component(LIBRARY_DIR "${LIBRARY_FILE}" DIRECTORY)
endif()
if (NOT HAD_ERROR AND EXISTS "${LIBRARY_DIR}")
message(STATUS "Found compiler-rt directory: ${LIBRARY_DIR}")
set(${dest} "${LIBRARY_DIR}" PARENT_SCOPE)
else()
message(STATUS "Failed to find compiler-rt directory")
endif()
endfunction()