--- cdecl-2.5.orig/Makefile
+++ cdecl-2.5/Makefile
@@ -15,9 +15,9 @@
 #
 # add -DUSE_READLINE   To compile in support for the GNU readline library.
 
-CFLAGS= -s -O2 -DUSE_READLINE
+
 CC= gcc
-LIBS= -lreadline -ltermcap
+
 ALLFILES= makefile cdgram.y cdlex.l cdecl.c cdecl.1 testset testset++
 BINDIR= /usr/bin
 MANDIR= /usr/man/man1
--- cdecl-2.5.orig/cdecl.c
+++ cdecl-2.5/cdecl.c
@@ -67,6 +67,7 @@
 # include <stddef.h>
 # include <string.h>
 # include <stdarg.h>
+# include <errno.h>
 #else
 # ifndef NOVARARGS
 #  include <varargs.h>
@@ -124,7 +125,6 @@
 
 #if __STDC__
   char *ds(char *), *cat(char *, ...), *visible(int);
-  int getopt(int,char **,char *);
   int main(int, char **);
   int yywrap(void);
   int dostdin(void);