fix some build errors or something

.gitignore

@@ -1 +1,2 @@
 build/
+glfw

CMakeLists.txt

@@ -2,9 +2,14 @@ cmake_minimum_required(VERSION 3.12)
 project(ChemistryRenderingApp LANGUAGES C CXX OBJCXX) # OBJCXX is required for Metal .mm files
 add_executable(ChemistryRenderingApp main.cpp)
 target_include_directories(ChemistryRenderingApp PUBLIC "${CMAKE_CURRENT_SOURCE_DIR}")
-target_link_libraries(ChemistryRenderingApp PRIVATE GryphnLoader)
+target_include_directories(ChemistryRenderingApp PUBLIC "${CMAKE_CURRENT_SOURCE_DIR}/glfw/include/")
+target_link_libraries(ChemistryRenderingApp PRIVATE GryphnLoader glfw)
+project(ChemistryRenderingApp LANGUAGES C CXX OBJC OBJCXX)
 
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
 add_subdirectory(Gryphn)
+set(BUILD_SHARED_LIBS ON)
+add_subdirectory(glfw)
+set(BUILD_SHARED_LIBS OFF)

Gryphn/GryphnLoader/src/instance/gryphn_instance.c

@@ -1,6 +1,6 @@
+#include "gryphn_return_code.h"
 #include "gryphn_instance.h"
 #include "stdlib.h"
-#include "stdio.h"
 
 typedef gnReturnCode (*PFN_initBackend)(gnInstance, gnInstanceCreateInfo*);
 

Gryphn/apis/GryphnMetal/src/metal.m

@@ -4,7 +4,7 @@
 #include "gryphn_handle.h"
 #include "metal_functions.h"
 
-extern "C" uint32_t gnInternalIsApiSupported(gnVersion version) {
+uint32_t gnInternalIsApiSupported(gnVersion version) {
     if (version != gnCreateVersion(1, 0, 0)) return 0;
     id<MTLDevice> testDevice = MTLCreateSystemDefaultDevice();
     if (testDevice == nil)
@@ -17,7 +17,7 @@ gnReturnCode destroyBackend(gnInstance instance) {
     return GN_SUCCESS;
 }
 
-extern "C" gnReturnCode initBackend(gnInstance instance, gnInstanceCreateInfo* info) {
+gnReturnCode initBackend(gnInstance instance, gnInstanceCreateInfo* info) {
     instance->dispatchTable.destroyInstance = destroyBackend;
     instance->dispatchTable.enumeratePhysicalDevices = metalEnumeratePhysicalDevices;
     instance->dispatchTable.getPhysicalDeviceProperties = metalGetPhysicalDeviceProperties;

Gryphn/apis/GryphnMetal/src/metal_device.m

@@ -63,6 +63,6 @@ gnReturnCode metalCreateDevice(gnInstance instance, gnDeviceCreateInfo* createIn
 }
 
 gnReturnCode metalDestroyDevice(gnDevice device) {
-    // [device->internalData release];
+    device->internalData = NULL;
     return GN_SUCCESS;
 }

main.cpp

@@ -1,6 +1,7 @@
 #include "Gryphn/gryphn.h"
 #include <iostream>
 #include "stdlib.h"
+#include "glfw/include/GLFW/glfw3.h"
 
 #define CONCAT_IMPL(a, b) a##b
 #define CONCAT(a, b) CONCAT_IMPL(a, b)
@@ -11,6 +12,7 @@
                   << ": " << CONCAT(res, __LINE__) << "\n"; \
     }
 
+GLFWwindow* window;
 gnVersion version = gnCreateVersion(1, 0, 0);
 gnInstance instance;
 gnDevice device;
@@ -61,13 +63,28 @@ void createDevice() {
 }
 
 int main() {
+    if (!glfwInit()) {
+        std::cout << "Failed to init GLFW\n";
+        return -1;
+    }
+
+    window = glfwCreateWindow(640, 360, "Chemistry Rendering App", nullptr, nullptr);
+    if (!window) {
+        std::cerr << "Failed to create window\n";
+        return -1;
+    }
+
     try {
         createInstance();
         createDevice();
+        while (!glfwWindowShouldClose(window)) {
+            glfwPollEvents();
+        }
     } catch (const std::exception& e) {
         std::cerr << "Caught Exception: " << e.what() << "\n";
         return 0;
     }
+    glfwDestroyWindow(window);
     gnDestroyDevice(&device);
     gnDestroyInstance(&instance);
 }