1function(find_compiler_rt_library name variable)
2  set(CLANG_COMMAND ${CMAKE_CXX_COMPILER} ${SANITIZER_COMMON_CFLAGS}
3      "--rtlib=compiler-rt" "--print-libgcc-file-name")
4  if (CMAKE_CXX_COMPILER_ID MATCHES Clang AND CMAKE_CXX_COMPILER_TARGET)
5    list(APPEND CLANG_COMMAND "--target=${CMAKE_CXX_COMPILER_TARGET}")
6  endif()
7  get_property(SANITIZER_CXX_FLAGS CACHE CMAKE_CXX_FLAGS PROPERTY VALUE)
8  string(REPLACE " " ";" SANITIZER_CXX_FLAGS "${SANITIZER_CXX_FLAGS}")
9  list(APPEND CLANG_COMMAND ${SANITIZER_CXX_FLAGS})
10  execute_process(
11      COMMAND ${CLANG_COMMAND}
12      RESULT_VARIABLE HAD_ERROR
13      OUTPUT_VARIABLE LIBRARY_FILE
14  )
15  string(STRIP "${LIBRARY_FILE}" LIBRARY_FILE)
16  file(TO_CMAKE_PATH "${LIBRARY_FILE}" LIBRARY_FILE)
17  string(REPLACE "builtins" "${name}" LIBRARY_FILE "${LIBRARY_FILE}")
18  if (NOT HAD_ERROR AND EXISTS "${LIBRARY_FILE}")
19    message(STATUS "Found compiler-rt ${name} library: ${LIBRARY_FILE}")
20    set(${variable} "${LIBRARY_FILE}" PARENT_SCOPE)
21  else()
22    message(STATUS "Failed to find compiler-rt ${name} library")
23  endif()
24endfunction()
25