fix(dmr): recover handheld voice sync

DMRBindings.pas

@@ -71,7 +71,7 @@ const
   {$ENDIF}
 var
   i: Integer;
-  LocalName: string;
+  LocalName, BuildName: string;
 begin
   if GLib <> dynlibs.NilHandle then Exit(True);
   GLastError := '';
@@ -79,6 +79,15 @@ begin
   begin
     LocalName := ExtractFilePath(ParamStr(0)) + Names[i];
     GLib := LoadLibrary(LocalName);
+    // Lazarus debug binaries live in bin/<target>/ while the documented
+    // optional adapter build lives in build/dmr. Make an in-tree build
+    // immediately usable without a system-wide cmake --install.
+    if GLib = dynlibs.NilHandle then
+    begin
+      BuildName := ExpandFileName(ExtractFilePath(ParamStr(0)) +
+        '../../build/dmr/' + Names[i]);
+      GLib := LoadLibrary(BuildName);
+    end;
     if GLib = dynlibs.NilHandle then GLib := LoadLibrary(Names[i]);
     if GLib <> dynlibs.NilHandle then Break;
   end;