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62 lines
2.9 KiB
62 lines
2.9 KiB
# Include CHECK_INCLUDE_FILE_CXX macro used by this macro.
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INCLUDE (${CMAKE_ROOT}/Modules/CheckIncludeFileCXX.cmake)
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#-----------------------------------------------------------------------------
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# Macro to select whether to use old streams or ANSI streams.
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# Argument is the variable to set with the result (VTK_USE_ANSI_STDLIB).
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MACRO(VTK_SELECT_STREAMS_LIBRARY var VTK_SOURCE_DIR)
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IF("${var}" MATCHES "^${var}$")
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CHECK_INCLUDE_FILE_CXX("iosfwd" VTK_HAVE_ANSI_STREAMS)
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CHECK_INCLUDE_FILE_CXX("iostream.h" VTK_HAVE_OLD_STREAMS)
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IF(VTK_HAVE_OLD_STREAMS)
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# Some compilers have iostream.h but not strstream.h
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# or strstrea.h. Treat these as not having old streams.
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CHECK_INCLUDE_FILE_CXX("strstrea.h" VTK_HAVE_OLD_STRSTREA_H)
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CHECK_INCLUDE_FILE_CXX("strstream.h" VTK_HAVE_OLD_STRSTREAM_H)
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IF(NOT VTK_HAVE_OLD_STRSTREAM_H)
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IF(NOT VTK_HAVE_OLD_STRSTREA_H)
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SET(VTK_HAVE_OLD_STREAMS 0)
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ENDIF(NOT VTK_HAVE_OLD_STRSTREA_H)
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ENDIF(NOT VTK_HAVE_OLD_STRSTREAM_H)
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ENDIF(VTK_HAVE_OLD_STREAMS)
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IF(VTK_HAVE_ANSI_STREAMS AND VTK_HAVE_OLD_STREAMS)
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# Have both old and new streams. Provide the option.
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# Default to OFF for MSVC 6 and ON for all others.
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SET(${var}_DEFAULT ON)
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IF(NOT CMAKE_COMPILER_IS_GNUCXX)
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IF("VTK_COMPILER_IS_VC6" MATCHES "^VTK_COMPILER_IS_VC6$")
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MESSAGE(STATUS "Checking if compiler is VC6")
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TRY_COMPILE(VTK_COMPILER_IS_VC6
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${CMAKE_CURRENT_BINARY_DIR}/CMakeTmp
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${VTK_SOURCE_DIR}/CMake/vtkTestCompilerIsVC6.cxx
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OUTPUT_VARIABLE OUTPUT)
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IF(VTK_COMPILER_IS_VC6)
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MESSAGE(STATUS "Checking if compiler is VC6 -- yes")
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SET(VTK_COMPILER_IS_VC6 1 CACHE INTERNAL "Compiler is MSVC 6")
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ELSE(VTK_COMPILER_IS_VC6)
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MESSAGE(STATUS "Checking if compiler is VC6 -- no")
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SET(VTK_COMPILER_IS_VC6 0 CACHE INTERNAL "Compiler is MSVC 6")
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WRITE_FILE(${CMAKE_BINARY_DIR}/CMakeFiles/CMakeError.log
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"Determining if the compiler is MSVC 6 "
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"failed with the following output:\n"
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"${OUTPUT}\n" APPEND)
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ENDIF(VTK_COMPILER_IS_VC6)
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ENDIF("VTK_COMPILER_IS_VC6" MATCHES "^VTK_COMPILER_IS_VC6$")
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IF(VTK_COMPILER_IS_VC6)
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SET(${var}_DEFAULT OFF)
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ENDIF(VTK_COMPILER_IS_VC6)
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ENDIF(NOT CMAKE_COMPILER_IS_GNUCXX)
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OPTION(${var} "Use the ANSI standard iostream library." ${${var}_DEFAULT})
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MARK_AS_ADVANCED(${var})
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ELSE(VTK_HAVE_ANSI_STREAMS AND VTK_HAVE_OLD_STREAMS)
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IF(VTK_HAVE_ANSI_STREAMS)
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# Have only new streams. Use them.
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SET(${var} ON)
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ELSE(VTK_HAVE_ANSI_STREAMS)
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# Have only old streams. Use them.
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SET(${var} OFF)
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ENDIF(VTK_HAVE_ANSI_STREAMS)
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ENDIF(VTK_HAVE_ANSI_STREAMS AND VTK_HAVE_OLD_STREAMS)
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ENDIF("${var}" MATCHES "^${var}$")
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ENDMACRO(VTK_SELECT_STREAMS_LIBRARY var)
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