Merge topic 'target_compile_features'

9eaf3755 Export: Populate INTERFACE_COMPILE_FEATURES property.
8ed59fc2 Add target_compile_features command.
4e6ca504 cmTargetPropCommandBase: Change the interface to return bool.
5412dede cmTarget: Transitively evaluate compiler features.
baff4434 cmTarget: Allow populating COMPILE_FEATURES using generator expressions.
f97bf437 Features: Add cxx_auto_type.
03355d6b cmTarget: Add COMPILE_FEATURES target property.
faeddf64 project: Add infrastructure for recording CXX compiler features
913394af cmTarget: Add CXX_STANDARD and CXX_EXTENSION target properties.
8238a6cd Add some COMPILE_OPTIONS for specifying C++ dialect.
892243fc Tests: Require CMake 3.0 for the SystemInformation test.
59b5fdd3 Don't load Clang-CXX from AppleClang-CXX.

1 files changed, 39 insertions, 0 deletions

diff --git a/Source/cmLocalGenerator.cxx b/Source/cmLocalGenerator.cxx
index 8e56d2f..f375b5f 100644
--- a/Source/cmLocalGenerator.cxx
+++ b/Source/cmLocalGenerator.cxx
@@ -1460,6 +1460,17 @@ void cmLocalGenerator::AddCompileOptions(
       this->AppendFlagEscape(flags, *i);
       }
     }
+  std::vector<std::string> features;
+  target->GetCompileFeatures(features, config);
+  for(std::vector<std::string>::const_iterator it = features.begin();
+      it != features.end(); ++it)
+    {
+     if (!this->Makefile->AddRequiredTargetFeature(target, *it))
+      {
+      return;
+      }
+    }
+  this->AddCompilerRequirementFlag(flags, target, lang);
 }
 
 //----------------------------------------------------------------------------
@@ -2131,6 +2142,34 @@ void cmLocalGenerator::AddSharedFlags(std::string& flags,
     }
 }
 
+//----------------------------------------------------------------------------
+void cmLocalGenerator::
+AddCompilerRequirementFlag(std::string &flags, cmTarget* target,
+                           const std::string& lang)
+{
+  if (lang.empty())
+    {
+    return;
+    }
+  std::string stdProp = lang + "_STANDARD";
+  const char *standard = target->GetProperty(stdProp);
+  if (!standard)
+    {
+    return;
+    }
+  std::string extProp = lang + "_EXTENSIONS";
+  bool ext = target->GetPropertyAsBool(extProp);
+  std::string type = ext ? "EXTENSION" : "STANDARD";
+
+  std::string compile_option =
+            "CMAKE_" + lang + std::string(standard)
+                     + "_" + type + "_COMPILE_OPTION";
+  if (const char *opt = target->GetMakefile()->GetDefinition(compile_option))
+    {
+    this->AppendFlags(flags, opt);
+    }
+}
+
 static void AddVisibilityCompileOption(std::string &flags, cmTarget* target,
                                        cmLocalGenerator *lg,
                                        const std::string& lang)