[CMake][libcxxabi] Fix the -target and -gcc-toolchain flag handling
[lldb.git] / 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} ${LIBCXXABI_COMPILE_FLAGS}
7       "--rtlib=compiler-rt" "--print-libgcc-file-name")
8   if (CMAKE_CXX_COMPILER_ID MATCHES Clang AND CMAKE_CXX_COMPILER_TARGET)
9     list(APPEND CLANG_COMMAND "--target=${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()