Add header for foced fork variable. Don't know what it is good for yet. But why not...

plugins/python-renderer/include/python-renderer/force-fork.h

@@ -0,0 +1,43 @@
+/*
+ * GDSII-Converter Python Plugin
+ * Copyright (C) 2019  Mario Hüttel <mario.huettel@gmx.net>
+ *
+ * This file is part of GDSII-Converter.
+ *
+ * GDSII-Converter is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * GDSII-Converter 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 GDSII-Converter. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ * @file force-fork.h
+ * @brief Header file force fork variabel definition.
+ *
+ * This file makes the force fork variable accessible.
+ * Actually this is kind of useless. However, here it is :)
+ * @author Mario Hüttel <mario.huettel@gmx.net>
+ */
+
+#ifndef __PYTHON_PLUGIN_FORCE_FORK_H__
+#define __PYTHON_PLUGIN_FORCE_FORK_H__
+
+/**
+ * @addtogroup python-plugin
+ * @{
+ */
+#include <gds-render/output-renderers/external-renderer-interfaces.h>
+
+extern const int VAR_DECL(EXTERNAL_LIBRARY_FORK_REQUEST);
+
+/** @} */
+
+#endif /* __PYTHON_PLUGIN_FORCE_FORK_H__ */
+

plugins/python-renderer/src/force-fork.c

@@ -22,13 +22,13 @@
  * @author Mario Hüttel <mario.huettel@gmx.net>
  */
 
+#include <python-renderer/force-fork.h>
+
 /**
  * @addtogroup python-plugin
  * @{
  */
 
-#include <gds-render/output-renderers/external-renderer-interfaces.h>
-
 /* The precense of this variable tells the gds-render application to execute this plugin in a separate process
  * The variable's value is don't care
  */