| # - Check sizeof a type |
| # CHECK_TYPE_SIZE(TYPE VARIABLE) |
| # Check if the type exists and determine size of type. if the type |
| # exists, the size will be stored to the variable. |
| # |
| # VARIABLE - variable to store size if the type exists. |
| # HAVE_${VARIABLE} - does the variable exists or not |
| |
| MACRO(CHECK_TYPE_SIZE TYPE VARIABLE) |
| SET(CMAKE_ALLOW_UNKNOWN_VARIABLE_READ_ACCESS 1) |
| IF(NOT DEFINED ${VARIABLE}) |
| IF("HAVE_${VARIABLE}" MATCHES "^HAVE_${VARIABLE}$") |
| SET(CHECK_TYPE_SIZE_TYPE "${TYPE}") |
| SET(MACRO_CHECK_TYPE_SIZE_FLAGS |
| "${CMAKE_REQUIRED_FLAGS}") |
| FOREACH(def HAVE_SYS_TYPES_H HAVE_STDINT_H HAVE_STDDEF_H) |
| IF("${def}") |
| SET(MACRO_CHECK_TYPE_SIZE_FLAGS |
| "${MACRO_CHECK_TYPE_SIZE_FLAGS} -D${def}") |
| ENDIF("${def}") |
| ENDFOREACH(def) |
| SET(CHECK_TYPE_SIZE_PREMAIN) |
| FOREACH(def ${CMAKE_EXTRA_INCLUDE_FILES}) |
| SET(CHECK_TYPE_SIZE_PREMAIN "${CHECK_TYPE_SIZE_PREMAIN}#include \"${def}\"\n") |
| ENDFOREACH(def) |
| CONFIGURE_FILE( |
| "${CMAKE_CURRENT_SOURCE_DIR}/CMake/CheckTypeSize.c.in" |
| "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckTypeSize.c" |
| IMMEDIATE @ONLY) |
| FILE(READ |
| "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckTypeSize.c" |
| CHECK_TYPE_SIZE_FILE_CONTENT) |
| MESSAGE(STATUS "Check size of ${TYPE}") |
| IF(CMAKE_REQUIRED_LIBRARIES) |
| SET(CHECK_TYPE_SIZE_ADD_LIBRARIES |
| "-DLINK_LIBRARIES:STRING=${CMAKE_REQUIRED_LIBRARIES}") |
| ENDIF(CMAKE_REQUIRED_LIBRARIES) |
| TRY_RUN(${VARIABLE} HAVE_${VARIABLE} |
| ${CMAKE_BINARY_DIR} |
| "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckTypeSize.c" |
| CMAKE_FLAGS -DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_TYPE_SIZE_FLAGS} |
| "${CHECK_TYPE_SIZE_ADD_LIBRARIES}" |
| OUTPUT_VARIABLE OUTPUT) |
| IF(HAVE_${VARIABLE}) |
| MESSAGE(STATUS "Check size of ${TYPE} - done") |
| FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log |
| "Determining size of ${TYPE} passed with the following output:\n${OUTPUT}\n\n") |
| ELSE(HAVE_${VARIABLE}) |
| MESSAGE(STATUS "Check size of ${TYPE} - failed") |
| FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log |
| "Determining size of ${TYPE} failed with the following output:\n${OUTPUT}\nCheckTypeSize.c:\n${CHECK_TYPE_SIZE_FILE_CONTENT}\n\n") |
| ENDIF(HAVE_${VARIABLE}) |
| ENDIF("HAVE_${VARIABLE}" MATCHES "^HAVE_${VARIABLE}$") |
| ENDIF(NOT DEFINED ${VARIABLE}) |
| SET(CMAKE_ALLOW_UNKNOWN_VARIABLE_READ_ACCESS ) |
| ENDMACRO(CHECK_TYPE_SIZE) |
