Lets try C++20

CMakeLists.txt

@@ -269,8 +269,8 @@ set( CMAKE_VISIBILITY_INLINES_HIDDEN ON )
 # Global setting: build everything position independent
 set( CMAKE_POSITION_INDEPENDENT_CODE ON )
 
-# Global setting: Use C++17
-set(CMAKE_CXX_STANDARD 17)
+# Global setting: Use C++20
+set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_EXTENSIONS OFF)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 

include/properties/property.h

@@ -719,7 +719,7 @@ private:
     std::unordered_map<wxString, T> m_reverseMap;
     T                               m_undefined;      // Returned if the string is not recognized
 
-    ENUM_MAP<T>()
+    ENUM_MAP()
     {
     }
 };

pcbnew/dialogs/dialog_board_statistics.h

@@ -49,7 +49,7 @@ public:
     template <typename T>
     struct LINE_ITEM
     {
-        LINE_ITEM<T>( T aAttribute, const wxString& aTitle ) :
+        LINE_ITEM( T aAttribute, const wxString& aTitle ) :
                 attribute( aAttribute ),
                 title( aTitle ),
                 qty( 0 )