first commit

extern/cmake/2.85/share/cmake-2.8/Modules/CMakeBackwardCompatibilityCXX.cmake

@@ -0,0 +1,54 @@
+# - define a bunch of backwards compatibility variables
+#  CMAKE_ANSI_CXXFLAGS - flag for ansi c++ 
+#  CMAKE_HAS_ANSI_STRING_STREAM - has <strstream>
+#  INCLUDE(TestForANSIStreamHeaders)
+#  INCLUDE(CheckIncludeFileCXX)
+#  INCLUDE(TestForSTDNamespace)
+#  INCLUDE(TestForANSIForScope)
+
+#=============================================================================
+# Copyright 2002-2009 Kitware, Inc.
+#
+# Distributed under the OSI-approved BSD License (the "License");
+# see accompanying file Copyright.txt for details.
+#
+# This software is distributed WITHOUT ANY WARRANTY; without even the
+# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the License for more information.
+#=============================================================================
+# (To distribute this file outside of CMake, substitute the full
+#  License text for the above reference.)
+
+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} ${CMAKE_ANSI_CXXFLAGS}")
+  INCLUDE(TestForANSIStreamHeaders)
+  INCLUDE(CheckIncludeFileCXX)
+  INCLUDE(TestForSTDNamespace)
+  INCLUDE(TestForANSIForScope)
+  INCLUDE(TestForSSTREAM)
+  SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS_SAVE}")
+ENDIF(NOT CMAKE_SKIP_COMPATIBILITY_TESTS)
+