r7360: Add check for sys/ioctl.h - set HAVE_SYS_IOCTL_H.
https://savannah.gnu.org/bugs/index.php?64188
--- configure.orig	2023-05-08 19:03:27.000000000 -0500
+++ configure	2023-07-07 22:22:36.000000000 -0500
@@ -23928,30 +23922,10 @@
   printf "%s\n" "#define HAVE_TERMIOS_H 1" >>confdefs.h
 
 fi
-
-ac_fn_cxx_check_header_compile "$LINENO" "netdb.h" "ac_cv_header_netdb_h" "$ac_includes_default"
-if test "x$ac_cv_header_netdb_h" = xyes
+ac_fn_cxx_check_header_compile "$LINENO" "sys/ioctl.h" "ac_cv_header_sys_ioctl_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_ioctl_h" = xyes
 then :
-  printf "%s\n" "#define HAVE_NETDB_H 1" >>confdefs.h
-
-fi
-ac_fn_cxx_check_header_compile "$LINENO" "termios.h" "ac_cv_header_termios_h" "$ac_includes_default"
-if test "x$ac_cv_header_termios_h" = xyes
-then :
-  printf "%s\n" "#define HAVE_TERMIOS_H 1" >>confdefs.h
-
-fi
-
-ac_fn_cxx_check_header_compile "$LINENO" "netdb.h" "ac_cv_header_netdb_h" "$ac_includes_default"
-if test "x$ac_cv_header_netdb_h" = xyes
-then :
-  printf "%s\n" "#define HAVE_NETDB_H 1" >>confdefs.h
-
-fi
-ac_fn_cxx_check_header_compile "$LINENO" "termios.h" "ac_cv_header_termios_h" "$ac_includes_default"
-if test "x$ac_cv_header_termios_h" = xyes
-then :
-  printf "%s\n" "#define HAVE_TERMIOS_H 1" >>confdefs.h
+  printf "%s\n" "#define HAVE_SYS_IOCTL_H 1" >>confdefs.h
 
 fi
 
--- ddd/config.h.in.orig	2023-05-08 19:03:28.000000000 -0500
+++ ddd/config.h.in	2023-07-07 22:46:55.000000000 -0500
@@ -462,6 +462,9 @@
    */
 #undef HAVE_SYS_DIR_H
 
+/* Define to 1 if you have the <sys/ioctl.h> header file. */
+#undef HAVE_SYS_IOCTL_H
+
 /* Define to 1 if you have the <sys/ndir.h> header file, and it defines `DIR'.
    */
 #undef HAVE_SYS_NDIR_H