Merge topic 'dev/better-eclipse-language-support'

a990722 eclipse: Support custom natures via a global property
51726cc eclipse: Add natures for Eclipse based on enabled languages
4a352d4 Notify extra generators about languages

Help/manual/cmake-properties.7.rst

@@ -28,6 +28,7 @@ Properties of Global Scope
    /prop_gbl/PACKAGES_FOUND
    /prop_gbl/PACKAGES_NOT_FOUND
    /prop_gbl/PREDEFINED_TARGETS_FOLDER
+   /prop_gbl/ECLIPSE_EXTRA_NATURES
    /prop_gbl/REPORT_UNDEFINED_PROPERTIES
    /prop_gbl/RULE_LAUNCH_COMPILE
    /prop_gbl/RULE_LAUNCH_CUSTOM

Help/prop_gbl/ECLIPSE_EXTRA_NATURES.rst

@@ -0,0 +1,8 @@
+ECLIPSE_EXTRA_NATURES
+---------------------
+
+List of natures to add to the generated Eclipse project file.
+
+Eclipse projects specify language plugins by using natures. This property
+should be set to the unique identifier for a nature (which looks like a Java
+package name).

Source/cmExternalMakefileProjectGenerator.cxx

@@ -13,6 +13,12 @@
 
 #include "cmExternalMakefileProjectGenerator.h"
 
+void cmExternalMakefileProjectGenerator
+::EnableLanguage(std::vector<std::string> const&,
+                 cmMakefile *, bool)
+{
+}
+
 std::string cmExternalMakefileProjectGenerator::CreateFullGeneratorName(
                                                    const char* globalGenerator,
                                                    const char* extraGenerator)

Source/cmExternalMakefileProjectGenerator.h

@@ -41,6 +41,8 @@ public:
   /** Get the documentation entry for this generator.  */
   virtual void GetDocumentation(cmDocumentationEntry& entry,
                                 const char* fullName) const = 0;
+  virtual void EnableLanguage(std::vector<std::string> const& languages,
+                              cmMakefile *, bool optional);
 
   ///! set the global generator which will generate the makefiles
   virtual void SetGlobalGenerator(cmGlobalGenerator* generator)

Source/cmExtraEclipseCDT4Generator.cxx

@@ -50,6 +50,29 @@ void cmExtraEclipseCDT4Generator
   entry.Brief = "Generates Eclipse CDT 4.0 project files.";
 }
 
+//----------------------------------------------------------------------------
+void cmExtraEclipseCDT4Generator
+::EnableLanguage(std::vector<std::string> const& languages,
+                 cmMakefile *, bool)
+{
+  for (std::vector<std::string>::const_iterator lit = languages.begin();
+       lit != languages.end(); ++lit)
+    {
+    if (*lit == "CXX")
+      {
+      this->Natures.insert("org.eclipse.cdt.core.ccnature");
+      }
+    else if (*lit == "C")
+      {
+      this->Natures.insert("org.eclipse.cdt.core.cnature");
+      }
+    else if (*lit == "Java")
+      {
+      this->Natures.insert("org.eclipse.jdt.core.javanature");
+      }
+    }
+}
+
 //----------------------------------------------------------------------------
 void cmExtraEclipseCDT4Generator::Generate()
 {
@@ -433,13 +456,28 @@ void cmExtraEclipseCDT4Generator::CreateProjectFile()
   // set natures for c/c++ projects
   fout <<
     "\t<natures>\n"
-    // TODO: ccnature only if it is c++ ???
-    "\t\t<nature>org.eclipse.cdt.core.ccnature</nature>\n"
     "\t\t<nature>org.eclipse.cdt.make.core.makeNature</nature>\n"
-    "\t\t<nature>org.eclipse.cdt.make.core.ScannerConfigNature</nature>\n"
-    "\t\t<nature>org.eclipse.cdt.core.cnature</nature>\n"
-    "\t</natures>\n"
-    ;
+    "\t\t<nature>org.eclipse.cdt.make.core.ScannerConfigNature</nature>\n";
+
+  for (std::set<std::string>::const_iterator nit=this->Natures.begin();
+       nit != this->Natures.end(); ++nit)
+    {
+    fout << "\t\t<nature>" << *nit << "</nature>\n";
+    }
+
+  if (const char *extraNaturesProp = mf->GetCMakeInstance()->
+        GetProperty("ECLIPSE_EXTRA_NATURES", cmProperty::GLOBAL))
+    {
+    std::vector<std::string> extraNatures;
+    cmSystemTools::ExpandListArgument(extraNaturesProp, extraNatures);
+    for (std::vector<std::string>::const_iterator nit = extraNatures.begin();
+         nit != extraNatures.end(); ++nit)
+      {
+      fout << "\t\t<nature>" << *nit << "</nature>\n";
+      }
+    }
+
+  fout << "\t</natures>\n";
 
   fout << "\t<linkedResources>\n";
   // create linked resources

Source/cmExtraEclipseCDT4Generator.h

@@ -41,6 +41,8 @@ public:
 
   virtual void GetDocumentation(cmDocumentationEntry& entry,
                                 const char*           fullName) const;
+  virtual void EnableLanguage(std::vector<std::string> const& languages,
+                              cmMakefile *, bool optional);
 
   virtual void Generate();
 
@@ -105,6 +107,7 @@ private:
   void CreateLinksForTargets(cmGeneratedFileStream& fout);
 
   std::vector<std::string> SrcLinkedResources;
+  std::set<std::string> Natures;
   std::string HomeDirectory;
   std::string HomeOutputDirectory;
   bool IsOutOfSourceBuild;

Source/cmGlobalGenerator.cxx

@@ -695,6 +695,11 @@ cmGlobalGenerator::EnableLanguage(std::vector<std::string>const& languages,
     {
     mf->ReadListFile(0,projectCompatibility.c_str());
     }
+  // Inform any extra generator of the new language.
+  if (this->ExtraGenerator)
+    {
+    this->ExtraGenerator->EnableLanguage(languages, mf, false);
+    }
 
   if(fatalError)
     {