--- Makefile.PL.orig	2021-01-22 08:02:35 UTC

+++ Makefile.PL

@@ -146,7 +146,7 @@ char $f ();

 /* We use char because int might match the return type of a gcc2

    builtin and then its argument prototype would still apply.  */

 char $f ();

-char (*f) ();

+char f;

 #ifdef F77_DUMMY_MAIN

 #  ifdef __cplusplus