Modules/CMakeDetermineCompilerABI.cmake

   1
   2 # Function to compile a source file to identify the compiler ABI.
   3 # This is used internally by CMake and should not be included by user
   4 # code.
   5
   6 FUNCTION(CMAKE_DETERMINE_COMPILER_ABI lang src)
   7   IF(NOT DEFINED CMAKE_DETERMINE_${lang}_ABI_COMPILED)
   8     MESSAGE(STATUS "Detecting ${lang} compiler ABI info")
   9
  10     # Compile the ABI identification source.
  11     SET(BIN "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeDetermineCompilerABI_${lang}.bin")
  12     TRY_COMPILE(CMAKE_DETERMINE_${lang}_ABI_COMPILED
  13       ${CMAKE_BINARY_DIR} ${src}
  14       OUTPUT_VARIABLE OUTPUT
  15       COPY_FILE "${BIN}"
  16       )
  17
  18     # Load the resulting information strings.
  19     IF(CMAKE_DETERMINE_${lang}_ABI_COMPILED)
  20       MESSAGE(STATUS "Detecting ${lang} compiler ABI info - done")
  21       FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
  22         "Detecting ${lang} compiler ABI info compiled with the following output:\n${OUTPUT}\n\n")
  23       FILE(STRINGS "${BIN}" ABI_STRINGS LIMIT_COUNT 2 REGEX "INFO:[^[]*\\[")
  24       FOREACH(info ${ABI_STRINGS})
  25         IF("${info}" MATCHES ".*INFO:sizeof_dptr\\[0*([^]]*)\\].*")
  26           STRING(REGEX REPLACE ".*INFO:sizeof_dptr\\[0*([^]]*)\\].*" "\\1" ABI_SIZEOF_DPTR "${info}")
  27         ENDIF("${info}" MATCHES ".*INFO:sizeof_dptr\\[0*([^]]*)\\].*")
  28         IF("${info}" MATCHES ".*INFO:abi\\[([^]]*)\\].*")
  29           STRING(REGEX REPLACE ".*INFO:abi\\[([^]]*)\\].*" "\\1" ABI_NAME "${info}")
  30         ENDIF("${info}" MATCHES ".*INFO:abi\\[([^]]*)\\].*")
  31       ENDFOREACH(info)
  32
  33       IF(ABI_SIZEOF_DPTR)
  34         SET(CMAKE_${lang}_SIZEOF_DATA_PTR "${ABI_SIZEOF_DPTR}" PARENT_SCOPE)
  35         SET(CMAKE_SIZEOF_VOID_P "${ABI_SIZEOF_DPTR}" PARENT_SCOPE)
  36       ENDIF(ABI_SIZEOF_DPTR)
  37
  38       IF(ABI_NAME)
  39         SET(CMAKE_${lang}_COMPILER_ABI "${ABI_NAME}" PARENT_SCOPE)
  40         SET(CMAKE_INTERNAL_PLATFORM_ABI "${ABI_NAME}" PARENT_SCOPE)
  41       ENDIF(ABI_NAME)
  42
  43     ELSE(CMAKE_DETERMINE_${lang}_ABI_COMPILED)
  44       MESSAGE(STATUS "Detecting ${lang} compiler ABI info - failed")
  45       FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
  46         "Detecting ${lang} compiler ABI info failed to compile with the following output:\n${OUTPUT}\n\n")
  47     ENDIF(CMAKE_DETERMINE_${lang}_ABI_COMPILED)
  48   ENDIF(NOT DEFINED CMAKE_DETERMINE_${lang}_ABI_COMPILED)
  49 ENDFUNCTION(CMAKE_DETERMINE_COMPILER_ABI)