ifdefs needed to find malloc.h on the mac.

backend/code1.c

@@ -25,7 +25,11 @@
 #include "large.h"
 #include <stdio.h>
 #include <string.h>
+#ifdef __APPLE__
+#include <sys/malloc.h>
+#else
 #include <malloc.h>
+#endif
 
 void horiz(struct zint_symbol *symbol, int row_no, int full)
 {

backend/maxicode.c

@@ -26,7 +26,11 @@
 #include "reedsol.h"
 #include <string.h>
 #include <stdlib.h>
+#ifdef __APPLE__
+#include <sys/malloc.h> 
+#else
 #include <malloc.h> 
+#endif
 
 int maxi_codeword[144];