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