Debugger: set default for "enable dwarf" dialog

components/debuggerintf/dbgintfdebuggerbase.pp

@@ -1537,7 +1537,15 @@ type
     etWindowsMessageSent
   );
 
-  TDebugCompilerRequirement = (dcrNoExternalDbgInfo, dcrExternalDbgInfoOnly, dcrDwarfOnly);
+  TDebugCompilerRequirement = (
+    dcrNoExternalDbgInfo,
+    dcrExternalDbgInfoOnly,
+    dcrDwarfOnly,
+
+    // preferred defaults
+    dcrPreferDwarf2Sets,
+    dcrPreferDwarf3
+  );
   TDebugCompilerRequirements = set of TDebugCompilerRequirement;
 
   TDBGFeedbackType = (ftInformation, ftWarning, ftError);

components/lazdebuggers/lazdebuggerfp/fpdebugdebugger.pas

@@ -4569,6 +4569,7 @@ begin
   {$ELSE}
   Result:=[dcrDwarfOnly];
   {$ENDIF}
+  Result := Result + [dcrPreferDwarf3];
 end;
 
 class function TFpDebugDebugger.CreateProperties: TDebuggerProperties;

components/lazdebuggers/lazdebuggerfplldb/fplldbdebugger.pas

@@ -1714,6 +1714,7 @@ begin
   Result:=[dcrNoExternalDbgInfo, dcrDwarfOnly];
   {$ENDIF}
   {$ENDIF}
+  Result := Result + [dcrPreferDwarf3];
 end;
 
 constructor TFpLldbDebugger.Create(const AExternalDebugger: String);

components/lazdebuggers/lazdebuggerlldb/lldbdebugger.pas

@@ -3134,7 +3134,7 @@ end;
 class function TLldbDebugger.RequiredCompilerOpts(ATargetCPU, ATargetOS: String
   ): TDebugCompilerRequirements;
 begin
-  Result:=[dcrDwarfOnly];
+  Result:=[dcrDwarfOnly, dcrPreferDwarf2Sets];
 end;
 
 function TLldbDebugger.GetLocation: TDBGLocationRec;

ide/main.pp

@@ -7347,6 +7347,11 @@ begin
           ModalResult := 400;
           Caption := lisTheProjectDoesNotUseDwarf_TaskDlg_NoDebugBtn_Caption;
         end;
+        if dcrPreferDwarf2Sets in ReqOpts then
+          ChangeDebugInfoFormatDialog.RadioButtons.DefaultButton := ChangeDebugInfoFormatDialog.RadioButtons[0]
+        else
+        if dcrPreferDwarf3 in ReqOpts then
+          ChangeDebugInfoFormatDialog.RadioButtons.DefaultButton := ChangeDebugInfoFormatDialog.RadioButtons[2];
 
         ChangeDebugInfoFormatDialog.OnButtonClicked := @DlgDebugInfoHelpRequested;