Features: Enable writing of MSVC compiler feature header.

Notes:
VS2015 and above are the only MSVC versions to support cxx_final, so remove
usages from the tests, and instead only test for cxx_override.

VS2012 and above to conform to cxx_decltype_incomplete_return_types
proposal, but without support for auto return types the dcl.type.simple
example in the proposal doesn't compile.

VS2013 and above to conform to the updated cxx_contextual_conversions proposal,
but VS2010 and above pass the test.

Compilers such as MSVC have no explicit flags to enable C++11 mode,
it just is always on. So only run the link tests with compilers that require
a flag to specify the language version.

1 files changed, 7 insertions, 2 deletions

diff --git a/Tests/RunCMake/CompileFeatures/RunCMakeTest.cmake b/Tests/RunCMake/CompileFeatures/RunCMakeTest.cmake
index 1892a5c..3b37091 100644
--- a/Tests/RunCMake/CompileFeatures/RunCMakeTest.cmake
+++ b/Tests/RunCMake/CompileFeatures/RunCMakeTest.cmake
@@ -27,8 +27,13 @@ if (NOT CXX_FEATURES)
   run_cmake(NoSupportedCxxFeatures)
   run_cmake(NoSupportedCxxFeaturesGenex)
 else()
-  run_cmake(LinkImplementationFeatureCycle)
-  run_cmake(LinkImplementationFeatureCycleSolved)
+  # compilers such as MSVC have no explicit flags to enable c++11 mode.
+  # Instead they come with all c++11 features implicitly enabled.
+  # So for those types of compilers this tests is not applicable.
+  if(CMAKE_CXX11_STANDARD_COMPILE_OPTION)
+    run_cmake(LinkImplementationFeatureCycle)
+    run_cmake(LinkImplementationFeatureCycleSolved)
+  endif()
 
   if (";${CXX_FEATURES};" MATCHES ";cxx_final;")
     set(RunCMake_TEST_OPTIONS "-DHAVE_FINAL=1")