From 9eed1ac33d637c3d7783a5407356272b27e8b50b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mario=20H=C3=BCttel?= <mario.huettel@gmx.net>
Date: Mon, 18 Nov 2019 22:20:18 +0100
Subject: [PATCH] Add header for foced fork variable. Don't know what it is
 good for yet. But why not...

---
 .../external-renderer-interfaces.h            | 12 ++++++
 .../include/python-renderer/force-fork.h      | 43 +++++++++++++++++++
 plugins/python-renderer/src/force-fork.c      |  4 +-
 3 files changed, 57 insertions(+), 2 deletions(-)
 create mode 100644 plugins/python-renderer/include/python-renderer/force-fork.h

diff --git a/include/gds-render/output-renderers/external-renderer-interfaces.h b/include/gds-render/output-renderers/external-renderer-interfaces.h
index e6f3043..cd8fc37 100644
--- a/include/gds-render/output-renderers/external-renderer-interfaces.h
+++ b/include/gds-render/output-renderers/external-renderer-interfaces.h
@@ -73,6 +73,18 @@
  */
 #define EXPORTED_VAR_DECL(VAR) EXPORT_VAR VAR
 
+/**
+ * @brief Define for declaring variables based on a define expansion
+ * @note If you want to declare an exported variable use @ref EXPORTED_VAR_DECL
+ */
+#define VAR_DECL(VAR) VAR
+
+/**
+ * @brief Define for declaring functions based on a define expansion
+ * @note If you want to declare an exported function use @ref EXPORTED_FUNC_DECL
+ */
+#define FUNC_DECL(FUNC) FUNC
+
 /** @} */
 
 #endif /* __EXTERNAL_RENDERER_INTERFACES_H__ */
diff --git a/plugins/python-renderer/include/python-renderer/force-fork.h b/plugins/python-renderer/include/python-renderer/force-fork.h
new file mode 100644
index 0000000..c43f5c4
--- /dev/null
+++ b/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__ */
+
diff --git a/plugins/python-renderer/src/force-fork.c b/plugins/python-renderer/src/force-fork.c
index 463a756..2e2a96a 100644
--- a/plugins/python-renderer/src/force-fork.c
+++ b/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
  */