Needs ctype.h

Index: src/filelist.c
--- src/filelist.c.orig
+++ src/filelist.c
@@ -17,6 +17,7 @@
  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
 
 
+#include <ctype.h>
 #include "config.h"
 #include "const.h"
 #include "newstr.h"
@@ -237,10 +238,10 @@ static FILE *open_and_position_arch_name (char *archna
 {
   FILE *f;
   char *string_table=NULL;
-  int i,
+  int i, c,
     sl;
   long l;
-  char s1[17], *s2, c;
+  char s1[17], *s2;
 
 #if OPEN_FILE_IN_BINARY_MODE
   f = fopen (archname, "rb");
