+# let's have some fun with long long and __int64...I don't even know why this lib need those types anyway...
+INCLUDE(${CMAKE_ROOT}/Modules/CheckTypeSize.cmake)
+CHECK_TYPE_SIZE("char" GDCM_SIZEOF_CHAR)
+CHECK_TYPE_SIZE("short" GDCM_SIZEOF_SHORT)
+CHECK_TYPE_SIZE("int" GDCM_SIZEOF_INT)
+CHECK_TYPE_SIZE("long" GDCM_SIZEOF_LONG)
+CHECK_TYPE_SIZE("float" GDCM_SIZEOF_FLOAT)
+CHECK_TYPE_SIZE("double" GDCM_SIZEOF_DOUBLE)
+
+CHECK_TYPE_SIZE("long long" GDCM_SIZEOF_LONG_LONG)
+CHECK_TYPE_SIZE("__int64" GDCM_SIZEOF___INT64)
+
+IF(GDCM_SIZEOF___INT64)
+ IF("GDCM_TYPE_SAME_LONG_AND___INT64" MATCHES "^GDCM_TYPE_SAME_LONG_AND___INT64$")
+ MESSAGE(STATUS "Checking whether long and __int64 are the same type")
+ TRY_COMPILE(GDCM_TYPE_SAME_LONG_AND___INT64
+ ${GDCM_BINARY_DIR}/CMakeTmp
+ ${GDCM_SOURCE_DIR}/CMake/vtkTestCompareTypes.cxx
+ COMPILE_DEFINITIONS
+ -DGDCM_TEST_COMPARE_TYPE_1=long
+ -DGDCM_TEST_COMPARE_TYPE_2=__int64
+ OUTPUT_VARIABLE OUTPUT)
+ IF(GDCM_TYPE_SAME_LONG_AND___INT64)
+ MESSAGE(STATUS "Checking whether long and __int64 are the same type -- yes")
+ SET(GDCM_TYPE_SAME_LONG_AND___INT64 1 CACHE INTERNAL "Whether long and __int64 are the same type")
+ WRITE_FILE(${CMAKE_BINARY_DIR}/CMakeOutput.log
+ "Determining whether long and __int64 are the same type "
+ "passed with the following output:\n"
+ "${OUTPUT}\n" APPEND)
+ ELSE(GDCM_TYPE_SAME_LONG_AND___INT64)
+ MESSAGE(STATUS "Checking whether long and __int64 are the same type -- no")
+ SET(GDCM_TYPE_SAME_LONG_AND___INT64 0 CACHE INTERNAL "Whether long and __int64 are the same type")
+ WRITE_FILE(${CMAKE_BINARY_DIR}/CMakeError.log
+ "Determining whether long and __int64 are the same type "
+ "failed with the following output:\n"
+ "${OUTPUT}\n" APPEND)
+ ENDIF(GDCM_TYPE_SAME_LONG_AND___INT64)
+ ENDIF("GDCM_TYPE_SAME_LONG_AND___INT64" MATCHES "^GDCM_TYPE_SAME_LONG_AND___INT64$")
+ IF(GDCM_SIZEOF_LONG_LONG)
+ IF("GDCM_TYPE_SAME_LONG_LONG_AND___INT64" MATCHES "^GDCM_TYPE_SAME_LONG_LONG_AND___INT64$")
+ MESSAGE(STATUS "Checking whether long long and __int64 are the same type")
+ TRY_COMPILE(GDCM_TYPE_SAME_LONG_LONG_AND___INT64
+ ${GDCM_BINARY_DIR}/CMakeTmp
+ ${GDCM_SOURCE_DIR}/CMake/vtkTestCompareTypes.cxx
+ COMPILE_DEFINITIONS
+ -DGDCM_TEST_COMPARE_TYPE_1=TYPE_LONG_LONG
+ -DGDCM_TEST_COMPARE_TYPE_2=__int64
+ OUTPUT_VARIABLE OUTPUT)
+ IF(GDCM_TYPE_SAME_LONG_LONG_AND___INT64)
+ MESSAGE(STATUS "Checking whether long long and __int64 are the same type -- yes")
+ SET(GDCM_TYPE_SAME_LONG_LONG_AND___INT64 1 CACHE INTERNAL "Whether long long and __int64 are the same type")
+ WRITE_FILE(${CMAKE_BINARY_DIR}/CMakeOutput.log
+ "Determining whether long long and __int64 are the same type "
+ "passed with the following output:\n"
+ "${OUTPUT}\n" APPEND)
+ ELSE(GDCM_TYPE_SAME_LONG_LONG_AND___INT64)
+ MESSAGE(STATUS "Checking whether long long and __int64 are the same type -- no")
+ SET(GDCM_TYPE_SAME_LONG_LONG_AND___INT64 0 CACHE INTERNAL "Whether long long and __int64 are the same type")
+ WRITE_FILE(${CMAKE_BINARY_DIR}/CMakeError.log
+ "Determining whether long long and __int64 are the same type "
+ "failed with the following output:\n"
+ "${OUTPUT}\n" APPEND)
+ ENDIF(GDCM_TYPE_SAME_LONG_LONG_AND___INT64)
+ ENDIF("GDCM_TYPE_SAME_LONG_LONG_AND___INT64" MATCHES "^GDCM_TYPE_SAME_LONG_LONG_AND___INT64$")
+ ENDIF(GDCM_SIZEOF_LONG_LONG)
+ IF(NOT GDCM_TYPE_SAME_LONG_AND___INT64)
+ IF(NOT GDCM_TYPE_SAME_LONG_LONG_AND___INT64)
+ # VS 6 cannot convert unsigned __int64 to double unless the
+ # "Visual C++ Processor Pack" is installed.
+ IF("GDCM_TYPE_CONVERT_UI64_TO_DOUBLE" MATCHES "^GDCM_TYPE_CONVERT_UI64_TO_DOUBLE$")
+ MESSAGE(STATUS "Checking whether unsigned __int64 can convert to double")
+ TRY_COMPILE(GDCM_TYPE_CONVERT_UI64_TO_DOUBLE
+ ${GDCM_BINARY_DIR}/CMakeTmp
+ ${GDCM_SOURCE_DIR}/CMake/vtkTestConvertTypes.cxx
+ COMPILE_DEFINITIONS
+ -DGDCM_TEST_CONVERT_TYPE_FROM=TYPE_UNSIGNED___INT64
+ -DGDCM_TEST_CONVERT_TYPE_TO=double
+ OUTPUT_VARIABLE OUTPUT)
+ IF(GDCM_TYPE_CONVERT_UI64_TO_DOUBLE)
+ MESSAGE(STATUS "Checking whether unsigned __int64 can convert to double -- yes")
+ SET(GDCM_TYPE_CONVERT_UI64_TO_DOUBLE 1 CACHE INTERNAL "Whether unsigned __int64 can convert to double")
+ WRITE_FILE(${CMAKE_BINARY_DIR}/CMakeOutput.log
+ "Determining whether unsigned __int64 can convert to double "
+ "passed with the following output:\n"
+ "${OUTPUT}\n" APPEND)
+ ELSE(GDCM_TYPE_CONVERT_UI64_TO_DOUBLE)
+ MESSAGE(STATUS "Checking whether unsigned __int64 can convert to double -- no")
+ SET(GDCM_TYPE_CONVERT_UI64_TO_DOUBLE 0 CACHE INTERNAL "Whether unsigned __int64 can convert to double")
+ WRITE_FILE(${CMAKE_BINARY_DIR}/CMakeError.log
+ "Determining whether unsigned __int64 can convert to double "
+ "failed with the following output:\n"
+ "${OUTPUT}\n" APPEND)
+ ENDIF(GDCM_TYPE_CONVERT_UI64_TO_DOUBLE)
+ ENDIF("GDCM_TYPE_CONVERT_UI64_TO_DOUBLE" MATCHES "^GDCM_TYPE_CONVERT_UI64_TO_DOUBLE$")
+ ENDIF(NOT GDCM_TYPE_SAME_LONG_LONG_AND___INT64)
+ ENDIF(NOT GDCM_TYPE_SAME_LONG_AND___INT64)
+ENDIF(GDCM_SIZEOF___INT64)
+
+# Enable the "long long" type if it is available. It is standard in
+# C99 and C++03 but not in earlier standards.
+SET(GDCM_TYPE_USE_LONG_LONG)
+IF(GDCM_SIZEOF_LONG_LONG)
+ SET(GDCM_TYPE_USE_LONG_LONG 1)
+ENDIF(GDCM_SIZEOF_LONG_LONG)
+
+# Enable the "__int64" type if it is available and unique. It is not
+# standard.
+SET(GDCM_TYPE_USE___INT64)
+IF(GDCM_SIZEOF___INT64)
+ IF(NOT GDCM_TYPE_SAME_LONG_AND___INT64)
+ IF(NOT GDCM_TYPE_SAME_LONG_LONG_AND___INT64)
+ SET(GDCM_TYPE_USE___INT64 1)
+ ENDIF(NOT GDCM_TYPE_SAME_LONG_LONG_AND___INT64)
+ ENDIF(NOT GDCM_TYPE_SAME_LONG_AND___INT64)
+ENDIF(GDCM_SIZEOF___INT64)
+