unity build setup complete, builds like it should.

src/goff/goff_main.c

@@ -1,6 +1,14 @@
+// clang-format off
 
 // [.h] includes
 #include "base/base_inc.h"
+#include "os/os_inc.h"
 
 // [.c] includes
 #include "base/base_inc.c"
+#include "os/os_inc.c"
+
+// clang-format on
+
+
+u64 main(int argc, char **argv) { return 0; }

src/os/core/win32/os_core_win32.c

@@ -28,7 +28,7 @@ internal void os_release(void *ptr, u64 size) {
 
 // NOTE(tijani): For large page size
 internal void *os_reserve_large(u64 size) {
-  void *l_memory = VirtualAlloc(0, size, MEM_RESERVE | MEM_COMMIT | MEM_LARGE_PAGES);
+  void *l_memory = VirtualAlloc(0, size, MEM_RESERVE | MEM_COMMIT | MEM_LARGE_PAGES, PAGE_READWRITE);
   return l_memory;
 }
 

src/os/core/win32/os_core_win32.h

@@ -2,6 +2,7 @@
 #define OS_CORE_WIN32_H
 
 #define WIN32_LEAN_AND_MEAN
+#include <windows.h>
 
 // Application State
 typedef struct OS_W32_State OS_W32_State;

src/os/os_inc.c

@@ -0,0 +1,5 @@
+// clang-format off
+
+#include "core/win32/os_core_win32.c"
+
+// clang-format on

src/os/os_inc.h

@@ -0,0 +1,11 @@
+#ifndef OS_INC_H
+#define OS_INC_H
+
+// clang-format off
+
+#include "core/os_core.h"
+#include "core/win32/os_core_win32.h"
+
+// clang-format on
+
+#endif // OS_INC_H