[#18] Made GLFWwindow opaque and added error dump for GCC below 9

Signed-off-by: Tobias Frisch <tfrisch@uni-koblenz.de>

CMakeLists.txt

@@ -14,6 +14,10 @@ endif()
 message("-- Language: [ C++ " ${CMAKE_CXX_STANDARD} " ]")
 message("-- Compiler: [ " ${CMAKE_CXX_COMPILER_ID} " " ${CMAKE_CXX_COMPILER_VERSION} " ]")
 
+if ((CMAKE_CXX_COMPILER_ID STREQUAL "GNU") AND (CMAKE_CXX_COMPILER_VERSION VERSION_LESS "9.0.0"))
+	message(FATAL_ERROR "Upgrade your compiler! GCC 9.0+ is required!")
+endif()
+
 # setting up different paths
 set(vkcv_config ${PROJECT_SOURCE_DIR}/config)
 set(vkcv_config_ext ${vkcv_config}/ext)

include/vkcv/Window.hpp

@@ -4,12 +4,14 @@
  * @file src/vkcv/Window.hpp
  * @brief Window class to handle a basic rendering surface and input
  */
-#include <GLFW/glfw3.h>
 
 #define NOMINMAX
 #include <algorithm>
 
+struct GLFWwindow;
+
 namespace vkcv {
+	
     class Window final {
     private:
         GLFWwindow *m_window;
@@ -88,4 +90,5 @@ namespace vkcv {
          */
         virtual ~Window();
     };
+    
 }
\ No newline at end of file

src/vkcv/Core.cpp

@@ -4,6 +4,8 @@
  * @brief Handling of global states regarding dependencies
  */
 
+#include <GLFW/glfw3.h>
+
 #include "vkcv/Core.hpp"
 #include "PassManager.hpp"
 #include "PipelineManager.hpp"

src/vkcv/Window.cpp

@@ -4,8 +4,9 @@
  * @brief Window class to handle a basic rendering surface and input
  */
 
-#include "vkcv/Window.hpp"
+#include <GLFW/glfw3.h>
 
+#include "vkcv/Window.hpp"
 
 namespace vkcv {