Add some COMPILE_OPTIONS for specifying C++ dialect.

These are compiler-specific, compiler version specific, extension specific
and standard version specific.

Modules/Compiler/Clang-CXX.cmake

@@ -9,3 +9,16 @@ cmake_policy(GET CMP0025 appleClangPolicy)
 if(NOT appleClangPolicy STREQUAL NEW)
   return()
 endif()
+
+if(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 2.1)
+  set(CMAKE_CXX98_STANDARD_COMPILE_OPTION "-std=c++98")
+  set(CMAKE_CXX98_EXTENSION_COMPILE_OPTION "-std=gnu++98")
+endif()
+
+if(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 3.1)
+  set(CMAKE_CXX11_STANDARD_COMPILE_OPTION "-std=c++11")
+  set(CMAKE_CXX11_EXTENSION_COMPILE_OPTION "-std=gnu++11")
+elseif(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 2.1)
+  set(CMAKE_CXX11_STANDARD_COMPILE_OPTION "-std=c++0x")
+  set(CMAKE_CXX11_EXTENSION_COMPILE_OPTION "-std=gnu++0x")
+endif()

Modules/Compiler/GNU-CXX.cmake

@@ -10,3 +10,16 @@ else()
     set(CMAKE_CXX_COMPILE_OPTIONS_VISIBILITY_INLINES_HIDDEN "-fvisibility-inlines-hidden")
   endif()
 endif()
+
+if(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4.3)
+  set(CMAKE_CXX98_STANDARD_COMPILE_OPTION "-std=c++98")
+  set(CMAKE_CXX98_EXTENSION_COMPILE_OPTION "-std=gnu++98")
+endif()
+
+if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4.7)
+  set(CMAKE_CXX11_STANDARD_COMPILE_OPTION "-std=c++11")
+  set(CMAKE_CXX11_EXTENSION_COMPILE_OPTION "-std=gnu++11")
+elseif(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4.3)
+  set(CMAKE_CXX11_STANDARD_COMPILE_OPTION "-std=c++0x")
+  set(CMAKE_CXX11_EXTENSION_COMPILE_OPTION "-std=gnu++0x")
+endif()

Tests/SystemInformation/SystemInformation.in

@@ -21,6 +21,10 @@ CMAKE_C_COMPILER_ID == "${CMAKE_C_COMPILER_ID}"
 CMAKE_C_COMPILER_VERSION == "${CMAKE_C_COMPILER_VERSION}"
 CMAKE_CXX_COMPILER_ID == "${CMAKE_CXX_COMPILER_ID}"
 CMAKE_CXX_COMPILER_VERSION == "${CMAKE_CXX_COMPILER_VERSION}"
+CMAKE_CXX98_STANDARD_COMPILE_OPTION == "${CMAKE_CXX98_STANDARD_COMPILE_OPTION}"
+CMAKE_CXX11_STANDARD_COMPILE_OPTION == "${CMAKE_CXX11_STANDARD_COMPILE_OPTION}"
+CMAKE_CXX98_EXTENSION_COMPILE_OPTION == "${CMAKE_CXX98_EXTENSION_COMPILE_OPTION}"
+CMAKE_CXX11_EXTENSION_COMPILE_OPTION == "${CMAKE_CXX11_EXTENSION_COMPILE_OPTION}"
 
 // C shared library flag
 CMAKE_SHARED_LIBRARY_C_FLAGS == "${CMAKE_SHARED_LIBRARY_C_FLAGS}"