diff --git a/CompileFlags.cmake b/CompileFlags.cmake
index e7beb3f5b..153ba6a47 100644
--- a/CompileFlags.cmake
+++ b/CompileFlags.cmake
@@ -83,5 +83,3 @@ endif ()
 if (CMAKE_ANSI_CFLAGS)
   set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${CMAKE_ANSI_CFLAGS}")
 endif ()
-
-include (${CMAKE_ROOT}/Modules/CMakeBackwardCompatibilityCXX.cmake)
diff --git a/Source/cmConfigure.cmake.h.in b/Source/cmConfigure.cmake.h.in
index 79776f4c7..c0a1aa955 100644
--- a/Source/cmConfigure.cmake.h.in
+++ b/Source/cmConfigure.cmake.h.in
@@ -9,10 +9,6 @@
   implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
   See the License for more information.
 ============================================================================*/
-#cmakedefine CMAKE_NO_STD_NAMESPACE
-#cmakedefine CMAKE_NO_ANSI_STREAM_HEADERS
-#cmakedefine CMAKE_NO_ANSI_STRING_STREAM
-#cmakedefine CMAKE_NO_ANSI_FOR_SCOPE
 #cmakedefine HAVE_ENVIRON_NOT_REQUIRE_PROTOTYPE
 #cmakedefine HAVE_UNSETENV
 #cmakedefine CMAKE_USE_ELF_PARSER
diff --git a/bootstrap b/bootstrap
index d92b091fe..ac82f2125 100755
--- a/bootstrap
+++ b/bootstrap
@@ -1461,35 +1461,6 @@ cmake_compiler_settings_comment="/*
 
 cmake_report cmConfigure.h${_tmp} "${cmake_compiler_settings_comment}"
 
-if [ "x$KWSYS_STL_HAVE_STD" = "x1" ]; then
-  cmake_report cmConfigure.h${_tmp} "/* #undef CMAKE_NO_STD_NAMESPACE */"
-else
-  cmake_report cmConfigure.h${_tmp} "#define CMAKE_NO_STD_NAMESPACE 1"
-fi
-
-if [ "x$KWSYS_IOS_USE_ANSI" = "x1" ]; then
-  cmake_report cmConfigure.h${_tmp} "/* #undef CMAKE_NO_ANSI_STREAM_HEADERS */"
-else
-  cmake_report cmConfigure.h${_tmp} "#define CMAKE_NO_ANSI_STREAM_HEADERS 1"
-fi
-
-if [ "x$KWSYS_IOS_USE_SSTREAM" = "x1" ]; then
-  cmake_report cmConfigure.h${_tmp} "/* #undef CMAKE_NO_ANSI_STRING_STREAM */"
-else
-  cmake_report cmConfigure.h${_tmp} "#define CMAKE_NO_ANSI_STRING_STREAM 1"
-fi
-
-# Test for ansi FOR scope
-if cmake_try_run "${cmake_cxx_compiler}" \
-  "${cmake_cxx_flags}" \
-  "${cmake_source_dir}/Modules/TestForAnsiForScope.cxx" >> cmake_bootstrap.log 2>&1; then
-  cmake_report cmConfigure.h${_tmp} "/* #undef CMAKE_NO_ANSI_FOR_SCOPE */"
-  echo "${cmake_cxx_compiler} has ANSI for scoping"
-else
-  cmake_report cmConfigure.h${_tmp} "#define CMAKE_NO_ANSI_FOR_SCOPE 1"
-  echo "${cmake_cxx_compiler} does not have ANSI for scoping"
-fi
-
 # When bootstrapping on MinGW with MSYS we must convert the source
 # directory to a windows path.
 if ${cmake_system_mingw}; then