Add cpp files for classes with only header files

src/transcoder/transcoderoptionsinterface.cpp

@@ -0,0 +1,28 @@
+/*
+ * Strawberry Music Player
+ * This file was part of Clementine.
+ * Copyright 2010, David Sansome <me@davidsansome.com>
+ *
+ * Strawberry is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Strawberry is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Strawberry.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <QWidget>
+#include <QString>
+
+#include "transcoderoptionsinterface.h"
+
+TranscoderOptionsInterface::TranscoderOptionsInterface(QWidget *parent) : QWidget(parent) {}
+
+TranscoderOptionsInterface::~TranscoderOptionsInterface() = default;

src/transcoder/transcoderoptionsinterface.h

@@ -30,8 +30,8 @@ class TranscoderOptionsInterface : public QWidget {
   Q_OBJECT
 
  public:
-  explicit TranscoderOptionsInterface(QWidget *parent) : QWidget(parent) {}
-  ~TranscoderOptionsInterface() override {}
+  explicit TranscoderOptionsInterface(QWidget *parent);
+  ~TranscoderOptionsInterface() override;
 
   virtual void Load() = 0;
   virtual void Save() = 0;