89 lines
4.4 KiB
CMake
89 lines
4.4 KiB
CMake
# - Check sizeof a type
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# CHECK_TYPE_SIZE(TYPE VARIABLE)
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# Check if the type exists and determine size of type. if the type
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# exists, the size will be stored to the variable.
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# VARIABLE - variable to store size if the type exists.
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# HAVE_${VARIABLE} - does the variable exists or not
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# The following variables may be set before calling this macro to
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# modify the way the check is run:
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#
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# CMAKE_REQUIRED_FLAGS = string of compile command line flags
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# CMAKE_REQUIRED_DEFINITIONS = list of macros to define (-DFOO=bar)
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# CMAKE_REQUIRED_INCLUDES = list of include directories
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# CMAKE_REQUIRED_LIBRARIES = list of libraries to link
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MACRO(CHECK_TYPE_SIZE TYPE VARIABLE)
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IF("HAVE_${VARIABLE}" MATCHES "^HAVE_${VARIABLE}$")
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MESSAGE(STATUS "Check size of ${TYPE}")
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SET(CHECK_TYPE_SIZE_TYPE "${TYPE}")
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SET(MACRO_CHECK_TYPE_SIZE_FLAGS
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"${CMAKE_REQUIRED_FLAGS}")
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FOREACH(def HAVE_SYS_TYPES_H HAVE_STDINT_H HAVE_STDDEF_H)
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IF("${def}")
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SET(MACRO_CHECK_TYPE_SIZE_FLAGS
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"${MACRO_CHECK_TYPE_SIZE_FLAGS} -D${def}")
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ENDIF("${def}")
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ENDFOREACH(def)
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SET(CHECK_TYPE_SIZE_PREINCLUDE)
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SET(CHECK_TYPE_SIZE_PREMAIN)
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SET(CHECK_TYPE_SIZE_ADD_LIBRARIES)
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SET(CHECK_TYPE_SIZE_ADD_INCLUDES)
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FOREACH(def ${CMAKE_EXTRA_INCLUDE_FILES})
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SET(CHECK_TYPE_SIZE_PREMAIN "${CHECK_TYPE_SIZE_PREMAIN}#include \"${def}\"\n")
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ENDFOREACH(def)
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IF(CMAKE_REQUIRED_LIBRARIES)
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SET(CHECK_TYPE_SIZE_ADD_LIBRARIES
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"-DLINK_LIBRARIES:STRING=${CMAKE_REQUIRED_LIBRARIES}")
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ENDIF(CMAKE_REQUIRED_LIBRARIES)
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IF(CMAKE_REQUIRED_INCLUDES)
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SET(CHECK_TYPE_SIZE_ADD_INCLUDES
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"-DINCLUDE_DIRECTORIES:STRING=${CMAKE_REQUIRED_INCLUDES}")
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ENDIF(CMAKE_REQUIRED_INCLUDES)
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CONFIGURE_FILE("${CMAKE_ROOT}/Modules/CheckTypeSizeC.c.in"
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"${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckTypeSizeC.c" IMMEDIATE @ONLY)
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FILE(READ "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckTypeSizeC.c"
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CHECK_TYPE_SIZE_FILE_CONTENT)
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TRY_COMPILE(HAVE_${VARIABLE}
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${CMAKE_BINARY_DIR}
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"${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckTypeSizeC.c"
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COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS}
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CMAKE_FLAGS -DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_TYPE_SIZE_FLAGS}
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"${CHECK_TYPE_SIZE_ADD_LIBRARIES}"
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"${CHECK_TYPE_SIZE_ADD_INCLUDES}"
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OUTPUT_VARIABLE OUTPUT
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COPY_FILE "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CheckTypeSize.bin" )
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IF(HAVE_${VARIABLE})
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# FILE(HEX_TO_BIN "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CheckTypeSize.bin"
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# "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CheckTypeSize.even_more_bin")
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FILE(STRINGS "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CheckTypeSize.bin"
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CMAKE_CHECKTYPESIZE_STRINGS LIMIT_COUNT 2 REGEX "INFO:sizeof")
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SET(CMAKE_CHECKTYPESIZE_FIRST_RESULT "FIRST_LOOP")
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FOREACH(info ${CMAKE_CHECKTYPESIZE_STRINGS})
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IF("${info}" MATCHES ".*INFO:sizeof\\[0*([^]]*)\\].*")
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STRING(REGEX REPLACE ".*INFO:sizeof\\[0*([^]]*)\\].*" "\\1" ${VARIABLE} "${info}")
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ENDIF("${info}" MATCHES ".*INFO:sizeof\\[0*([^]]*)\\].*")
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IF("${CMAKE_CHECKTYPESIZE_FIRST_RESULT}" STREQUAL "FIRST_LOOP")
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SET(CMAKE_CHECKTYPESIZE_FIRST_RESULT "${${VARIABLE}}")
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ENDIF("${CMAKE_CHECKTYPESIZE_FIRST_RESULT}" STREQUAL "FIRST_LOOP")
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IF(NOT "${CMAKE_CHECKTYPESIZE_FIRST_RESULT}" STREQUAL "${${VARIABLE}}")
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MESSAGE(SEND_ERROR "CHECK_TYPE_SIZE found different results, consider setting CMAKE_OSX_ARCHITECTURES or CMAKE_TRY_COMPILE_OSX_ARCHITECTURES to one or no architecture !")
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ENDIF(NOT "${CMAKE_CHECKTYPESIZE_FIRST_RESULT}" STREQUAL "${${VARIABLE}}")
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ENDFOREACH(info ${CMAKE_CHECKTYPESIZE_STRINGS})
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MESSAGE(STATUS "Check size of ${TYPE} - done")
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FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
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"Determining size of ${TYPE} passed with the following output:\n${OUTPUT}\n\n")
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ELSE(HAVE_${VARIABLE})
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MESSAGE(STATUS "Check size of ${TYPE} - failed")
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FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
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"Determining size of ${TYPE} failed with the following output:\n${OUTPUT}\nCheckTypeSize.c:\n${CHECK_TYPE_SIZE_FILE_CONTENT}\n\n")
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SET(${VARIABLE})
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ENDIF(HAVE_${VARIABLE})
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SET(${VARIABLE} "${${VARIABLE}}" CACHE INTERNAL "Result of CHECK_TYPE_SIZE" FORCE)
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ENDIF("HAVE_${VARIABLE}" MATCHES "^HAVE_${VARIABLE}$")
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ENDMACRO(CHECK_TYPE_SIZE)
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