diff -ur a/src/compat.h b/src/compat.h
--- a/src/compat.h	2007-05-27 00:59:43.000000000 +0000
+++ b/src/compat.h	2024-02-17 11:53:01.541895388 +0000
@@ -27,6 +27,7 @@
 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif
+#include <sys/stat.h>
 #endif
 
 #include <sys/types.h>
@@ -186,6 +187,8 @@
 void vwarnc(int code, const char *fmt, va_list ap);
 void warnx(const char *fmt, ...);
 void vwarnx(const char *fmt, va_list ap);
+#else
+#include <err.h>
 #endif
 
 #ifndef HAVE_REALLOCF
@@ -323,7 +326,8 @@
   #ifdef _WIN32
     #define lseek64 _lseeki64
   #else 
-    #if SIZEOF_OFF_T == 8 
+    #if SIZEOF_OFF_T == 8 || defined(__APPLE__)
+      _Static_assert(sizeof(off_t) == 8, "off_t must be 8 bytes");
       #define lseek64 lseek
     #else
       #error ERROR: Must have a working 64 bit seek function
diff -ur a/src/ntfs.c b/src/ntfs.c
--- a/src/ntfs.c	2007-05-27 01:00:08.000000000 +0000
+++ b/src/ntfs.c	2024-02-17 11:48:19.402694507 +0000
@@ -20,7 +20,7 @@
 #include "usuals.h"
 #include "ntfs.h"
 
-#include "malloc.h"
+#include "stdlib.h"
 #include "string.h"