Add preliminary construct for plugin renderers (shared object renderers)

plugins/CMakeLists.txt

@@ -0,0 +1,2 @@
+add_subdirectory(python-renderer)
+add_custom_target(plugins DEPENDS pythonrenderer)

plugins/python-renderer/CMakeLists.txt

@@ -0,0 +1,12 @@
+project(pythonrenderer)
+cmake_minimum_required(VERSION 2.8)
+find_package(PkgConfig REQUIRED)
+pkg_search_module(PYTHON REQUIRED python3)
+
+aux_source_directory(src SOURCES)
+
+include_directories(${PYTHON_INCLUDE_DIRS} ${CMAKE_CURRENT_SOURCE_DIR}/include)
+link_libraries(${PYTHON_LDFLAGS} version)
+
+add_library(${PROJECT_NAME} SHARED EXCLUDE_FROM_ALL ${SOURCES})
+add_dependencies(${PROJECT_NAME} version)

plugins/python-renderer/src/plugin-main.c

@@ -0,0 +1,7 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+int a(void)
+{
+	return 0;
+}