-# define MALLOC wimlib_malloc
-# define FREE wimlib_free_memory
-# define REALLOC wimlib_realloc
-# define CALLOC wimlib_calloc
-# define STRDUP wimlib_strdup
-# define WCSDUP wimlib_wcsdup
-#else /* ENABLE_CUSTOM_MEMORY_ALLOCATOR */
-# include <stdlib.h>
-# include <string.h>
-# define MALLOC malloc
-# define FREE free
-# define REALLOC realloc
-# define CALLOC calloc
-# define STRDUP strdup
-# define WCSDUP wcsdup
-#endif /* !ENABLE_CUSTOM_MEMORY_ALLOCATOR */
+#define MALLOC wimlib_malloc
+#define FREE wimlib_free_memory
+#define REALLOC wimlib_realloc
+#define CALLOC wimlib_calloc
+#define STRDUP wimlib_strdup
+#define WCSDUP wimlib_wcsdup