Added Projucer option to select c++ language standard in Android exporter

extras/Projucer/Source/Project Saving/jucer_ProjectExport_Android.h

@@ -752,8 +752,19 @@ private:
     {
         props.add (new TextPropertyComponent (androidTheme.getPropertyAsValue(), "Android Theme", 256, false),
                    "E.g. @android:style/Theme.NoTitleBar or leave blank for default");
+
+        static const char* cppStandardNames[]  = { "C++03",       "C++11",       "C++14",        nullptr };
+        static const char* cppStandardValues[] = { "-std=c++03",  "-std=c++11",  "-std=c++14",   nullptr };
+
+        props.add (new ChoicePropertyComponent (getCppStandardValue(), "C++ standard to use",
+                                                StringArray (cppStandardNames), Array<var>  (cppStandardValues)),
+                                                "The C++ standard to specify in the makefile");
     }
 
+    //==============================================================================
+    Value getCppStandardValue()                         { return getSetting (Ids::cppLanguageStandard); }
+    String getCppStandardString() const                 { return settings[Ids::cppLanguageStandard]; }
+
     //==============================================================================
     String createDefaultClassName() const
     {
@@ -1037,7 +1048,12 @@ private:
     StringArray getAndroidCxxCompilerFlags() const
     {
         StringArray cxxFlags (getAndroidCompilerFlags());
-        cxxFlags.add ("\"-std=gnu++11\"");
+        String cppStandardToUse (getCppStandardString());
+
+        if (cppStandardToUse.isEmpty())
+            cppStandardToUse = "-std=c++11";
+
+        cxxFlags.add ("\"" + cppStandardToUse + "\"");
 
         return cxxFlags;
     }