c shared load macro

shared.h

#ifdef __linux__
  #include <dlfcn.h>
	#define LIBTYPE void*
	#define OPENLIB(libname) dlopen((libname), RTLD_LAZY)
	#define LIBFUNC(lib, fn) dlsym((lib), (fn))
	#define FREELIB(lib) dlclose((lib))
#elif defined(_WIN32)
	#include <Windows.h>
	#define LIBTYPE HINSTANCE
	#define OPENLIB(libname) LoadLibraryW(L ## libname)
	#define LIBFUNC(lib, fn) GetProcAddress((lib), (fn))
	#define FREELIB(lib) FreeLibrary((lib))
#endif