44 lines
1.9 KiB
CMake
44 lines
1.9 KiB
CMake
# - define a bunch of backwards compatibility variables
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# CMAKE_ANSI_CXXFLAGS - flag for ansi c++
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# CMAKE_HAS_ANSI_STRING_STREAM - has <strstream>
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# INCLUDE(TestForANSIStreamHeaders)
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# INCLUDE(CheckIncludeFileCXX)
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# INCLUDE(TestForSTDNamespace)
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# INCLUDE(TestForANSIForScope)
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IF(NOT CMAKE_SKIP_COMPATIBILITY_TESTS)
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# check for some ANSI flags in the CXX compiler if it is not gnu
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IF(NOT CMAKE_COMPILER_IS_GNUCXX)
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INCLUDE(TestCXXAcceptsFlag)
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SET(CMAKE_TRY_ANSI_CXX_FLAGS "")
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IF(CMAKE_SYSTEM MATCHES "IRIX.*")
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SET(CMAKE_TRY_ANSI_CXX_FLAGS "-LANG:std")
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ENDIF(CMAKE_SYSTEM MATCHES "IRIX.*")
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IF(CMAKE_SYSTEM MATCHES "OSF.*")
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SET(CMAKE_TRY_ANSI_CXX_FLAGS "-std strict_ansi -nopure_cname")
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ENDIF(CMAKE_SYSTEM MATCHES "OSF.*")
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# if CMAKE_TRY_ANSI_CXX_FLAGS has something in it, see
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# if the compiler accepts it
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IF( CMAKE_TRY_ANSI_CXX_FLAGS MATCHES ".+")
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CHECK_CXX_ACCEPTS_FLAG(${CMAKE_TRY_ANSI_CXX_FLAGS} CMAKE_CXX_ACCEPTS_FLAGS)
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# if the compiler liked the flag then set CMAKE_ANSI_CXXFLAGS
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# to the flag
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IF(CMAKE_CXX_ACCEPTS_FLAGS)
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SET(CMAKE_ANSI_CXXFLAGS ${CMAKE_TRY_ANSI_CXX_FLAGS} CACHE INTERNAL
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"What flags are required by the c++ compiler to make it ansi." )
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ENDIF(CMAKE_CXX_ACCEPTS_FLAGS)
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ENDIF( CMAKE_TRY_ANSI_CXX_FLAGS MATCHES ".+")
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ENDIF(NOT CMAKE_COMPILER_IS_GNUCXX)
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SET(CMAKE_CXX_FLAGS_SAVE ${CMAKE_CXX_FLAGS})
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SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${CMAKE_ANSI_CXXFLAGS}")
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INCLUDE(TestForANSIStreamHeaders)
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INCLUDE(CheckIncludeFileCXX)
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INCLUDE(TestForSTDNamespace)
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INCLUDE(TestForANSIForScope)
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CHECK_INCLUDE_FILE_CXX("sstream" CMAKE_HAS_ANSI_STRING_STREAM)
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SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS_SAVE}")
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IF(NOT CMAKE_HAS_ANSI_STRING_STREAM)
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SET( CMAKE_NO_ANSI_STRING_STREAM 1 CACHE INTERNAL
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"Does the compiler support sstream or stringstream.")
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ENDIF(NOT CMAKE_HAS_ANSI_STRING_STREAM)
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ENDIF(NOT CMAKE_SKIP_COMPATIBILITY_TESTS)
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