libcxxabi/cmake/Modules/HandleCompilerRT.cmake

   1 function(find_compiler_rt_library name dest)
   2   if (NOT DEFINED LIBCXXABI_COMPILE_FLAGS)
   3     message(FATAL_ERROR "LIBCXXABI_COMPILE_FLAGS must be defined when using this function")
   4   endif()
   5   set(dest "" PARENT_SCOPE)
   6   set(CLANG_COMMAND ${CMAKE_CXX_COMPILER} ${TARGET_TRIPLE} ${LIBCXXABI_COMPILE_FLAGS}
   7       "--rtlib=compiler-rt" "--print-libgcc-file-name")
   8   if (CMAKE_CXX_COMPILER_ID MATCHES Clang AND CMAKE_CXX_COMPILER_TARGET)
   9     list(APPEND CLANG_COMMAND "--target=${CMAKE_CXX_COMPILER_TARGET}")
  10   endif()
  11   execute_process(
  12       COMMAND ${CLANG_COMMAND}
  13       RESULT_VARIABLE HAD_ERROR
  14       OUTPUT_VARIABLE LIBRARY_FILE
  15   )
  16   string(STRIP "${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 library: ${LIBRARY_FILE}")
  20     set(${dest} "${LIBRARY_FILE}" PARENT_SCOPE)
  21   else()
  22     message(STATUS "Failed to find compiler-rt library")
  23   endif()
  24 endfunction()
  25
  26 function(find_compiler_rt_dir dest)
  27   if (NOT DEFINED LIBCXXABI_COMPILE_FLAGS)
  28     message(FATAL_ERROR "LIBCXXABI_COMPILE_FLAGS must be defined when using this function")
  29   endif()
  30   set(dest "" PARENT_SCOPE)
  31   if (APPLE)
  32     set(CLANG_COMMAND ${CMAKE_CXX_COMPILER} ${LIBCXXABI_COMPILE_FLAGS}
  33         "-print-file-name=lib")
  34     execute_process(
  35         COMMAND ${CLANG_COMMAND}
  36         RESULT_VARIABLE HAD_ERROR
  37         OUTPUT_VARIABLE LIBRARY_DIR
  38     )
  39     string(STRIP "${LIBRARY_DIR}" LIBRARY_DIR)
  40     set(LIBRARY_DIR "${LIBRARY_DIR}/darwin")
  41   else()
  42     set(CLANG_COMMAND ${CMAKE_CXX_COMPILER} ${LIBCXXABI_COMPILE_FLAGS}
  43         "--rtlib=compiler-rt" "--print-libgcc-file-name")
  44     execute_process(
  45         COMMAND ${CLANG_COMMAND}
  46         RESULT_VARIABLE HAD_ERROR
  47         OUTPUT_VARIABLE LIBRARY_FILE
  48     )
  49     string(STRIP "${LIBRARY_FILE}" LIBRARY_FILE)
  50     get_filename_component(LIBRARY_DIR "${LIBRARY_FILE}" DIRECTORY)
  51   endif()
  52   if (NOT HAD_ERROR AND EXISTS "${LIBRARY_DIR}")
  53     message(STATUS "Found compiler-rt directory: ${LIBRARY_DIR}")
  54     set(${dest} "${LIBRARY_DIR}" PARENT_SCOPE)
  55   else()
  56     message(STATUS "Failed to find compiler-rt directory")
  57   endif()
  58 endfunction()