Introduce "build feature" lookup framework

This creates cmTarget::GetFeature and cmMakefile::GetFeature methods to
query "build feature" properties.  These methods handle local-to-global
scope and per-configuration property lookup.  Specific build features
will be defined later.

1 files changed, 4 insertions, 0 deletions

diff --git a/Source/cmLocalGenerator.h b/Source/cmLocalGenerator.h
index 840e5d3..d2082e4 100644
--- a/Source/cmLocalGenerator.h
+++ b/Source/cmLocalGenerator.h
@@ -149,6 +149,10 @@ public:
   void AppendDefines(std::string& defines, const char* defines_list,
                      const char* lang);
 
+  /** Lookup and append options associated with a particular feature.  */
+  void AppendFeatureOptions(std::string& flags, const char* lang,
+                            const char* feature);
+
   /** Translate a dependency as given in CMake code to the name to
       appear in a generated build file.  If the given name is that of
       a CMake target it will be transformed to the real output