--- a/bin2iso19b_linux.c
+++ b/bin2iso19b_linux.c
@@ -1,6 +1,12 @@
+#ifndef _POSIX_C_SOURCE
+#define _POSIX_C_SOURCE 200809L
+#endif
+
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
+#include <unistd.h>
+#include <sys/types.h>
 
 #define DEBUG 0
 #define CHECK 0 /* don't bother checking bin for validity... */
@@ -111,7 +117,7 @@
    unsigned long size; /* track size in bytes */
 } tTrack;
 
-buffered_fread(unsigned char *array, unsigned int size) {
+int buffered_fread(unsigned char *array, unsigned int size) {
    unsigned int i;
    
    if(INBUF_WIDX == 0) {