1# 2# Check if the system supports 64 bit streams 3# 4# CHECK_FOR_64BIT_STREAMS - macro which checks the existence of 64 bit streams 5# VARIABLE - variable to return result 6# 7 8MACRO(CHECK_FOR_64BIT_STREAMS VARIABLE) 9 IF(NOT DEFINED "${VARIABLE}") 10 SET(MACRO_CHECK_FOR_64BIT_STREAMS_FLAGS ${CMAKE_REQUIRED_FLAGS}) 11 IF(CMAKE_NO_ANSI_STREAM_HEADERS) 12 SET(MACRO_CHECK_FOR_64BIT_STREAMS_FLAGS 13 "${MACRO_CHECK_FOR_64BIT_STREAMS_FLAGS} -DNO_ANSI") 14 ENDIF() 15 IF(SIZEOF_LONG_LONG) 16 SET(MACRO_CHECK_FOR_64BIT_STREAMS_FLAGS 17 "${MACRO_CHECK_FOR_64BIT_STREAMS_FLAGS} -DSIZEOF_LONG_LONG") 18 ENDIF() 19 IF(SIZEOF___INT64) 20 SET(MACRO_CHECK_FOR_64BIT_STREAMS_FLAGS 21 "${MACRO_CHECK_FOR_64BIT_STREAMS_FLAGS} -DSIZEOF___INT64") 22 ENDIF() 23 MESSAGE(STATUS "Check if system supports 64 bit streams") 24 TRY_COMPILE(${VARIABLE} 25 ${CMAKE_BINARY_DIR} 26 ${xdmf2_SOURCE_DIR}/CMake/CheckFor64BitStreams.cxx 27 CMAKE_FLAGS 28 -DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_FOR_64BIT_STREAMS_FLAGS} 29 OUTPUT_VARIABLE OUTPUT) 30 IF(${VARIABLE}) 31 MESSAGE(STATUS "Check if system supports 64 bit streams - yes") 32 SET(${VARIABLE} 1 CACHE INTERNAL "Whether streams support 64-bit types") 33 ELSE() 34 MESSAGE(STATUS "Check if system supports 64 bit streams - no") 35 SET(${VARIABLE} "" CACHE INTERNAL "Whether streams support 64-bit types") 36 FILE(APPEND ${CMAKE_BINARY_DIR}/CMakeFiles/CMakeError.log 37 "Determining if the system supports 64 bit streams " 38 "failed with the following output:\n" 39 "${OUTPUT}\n") 40 ENDIF() 41 ENDIF() 42ENDMACRO() 43