Put compiler defined macros into eclipse project files

Now gcc is queried also for the builtin definitions, and they are then added
to the .cproject file. This should make the preprocessor highlighting in
eclipse work better (#9272)
Patch mostly from Miguel.

Alex

1 files changed, 69 insertions, 0 deletions

diff --git a/Source/cmExtraEclipseCDT4Generator.cxx b/Source/cmExtraEclipseCDT4Generator.cxx
index a21df66..b7daab6 100644
--- a/Source/cmExtraEclipseCDT4Generator.cxx
+++ b/Source/cmExtraEclipseCDT4Generator.cxx
@@ -574,6 +574,75 @@ void cmExtraEclipseCDT4Generator::CreateCProjectFile() const
         }
       }
     }
+  // add system defined c macros
+  const char* cDefs=mf->GetDefinition("CMAKE_ECLIPSE_C_SYSTEM_DEFINED_MACROS");
+  if(cDefs)
+    {
+    // Expand the list.
+    std::vector<std::string> defs;
+    cmSystemTools::ExpandListArgument(cDefs, defs, true);
+
+    // the list must contain only definition-value pairs:
+    if ((defs.size() % 2) == 0)
+      {
+      std::vector<std::string>::const_iterator di = defs.begin();
+      while (di != defs.end())
+        {
+        std::string def = *di;
+        ++di;
+        std::string val;
+        if (di != defs.end())
+          {
+          val = *di;
+          ++di;
+          }
+
+        // insert the definition if not already added.
+        if(emmited.find(def) == emmited.end())
+          {
+          emmited.insert(def);
+          fout << "<pathentry kind=\"mac\" name=\"" << def
+               << "\" path=\"\" value=\"" << this->EscapeForXML(val)
+               << "\"/>\n";
+          }
+        }
+      }
+    }
+  // add system defined c++ macros
+  const char* cxxDefs = mf->GetDefinition(
+                                    "CMAKE_ECLIPSE_CXX_SYSTEM_DEFINED_MACROS");
+  if(cxxDefs)
+    {
+    // Expand the list.
+    std::vector<std::string> defs;
+    cmSystemTools::ExpandListArgument(cxxDefs, defs, true);
+
+    // the list must contain only definition-value pairs:
+    if ((defs.size() % 2) == 0)
+      {
+      std::vector<std::string>::const_iterator di = defs.begin();
+      while (di != defs.end())
+        {
+        std::string def = *di;
+        ++di;
+        std::string val;
+        if (di != defs.end())
+          {
+          val = *di;
+          ++di;
+          }
+
+        // insert the definition if not already added.
+        if(emmited.find(def) == emmited.end())
+          {
+          emmited.insert(def);
+          fout << "<pathentry kind=\"mac\" name=\"" << def
+               << "\" path=\"\" value=\"" << this->EscapeForXML(val)
+               << "\"/>\n";
+          }
+        }
+      }
+    }
 
   // include dirs
   emmited.clear();