--- freem/src/service.c	2025/02/25 18:53:14	1.2
+++ freem/src/service.c	2025/02/28 20:06:07	1.4
@@ -74,11 +74,23 @@ int scosgr (short att, short bwflag);
 #endif
 
 /* system services */
-#if defined(__sun) || defined(__FreeBSD__) || defined(__NetBSD__)
-# include <termio.h>
+#if !defined(__APPLE__) && !defined(__gnu_hurd__) && !defined(EMSCRIPTEN)
+# if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__AMIGA)
+#  include <termios.h>
+#  if !defined(__AMIGA)
+#   define TCGETA TIOCGETA
+#   define TCSETA TIOCSETA
+#  endif
+#  define termio termios
+# else
+#  if !defined(MSDOS)
+#    include <termio.h>
+#  endif
+# endif
 #else
 # include <termios.h>
 #endif
+
 #include <fcntl.h>
 
 /* search 'string' for occurence of 'pattrn'
@@ -3356,7 +3368,7 @@ void write_t (short int col)
 
 }					/* end of write_t() */
 
-void ontimo ()
+void ontimo (void)
 {					/* handle timeout (for read) */
     longjmp (sjbuf, 1);
 }					/* end of ontimo() */