unix.c (stream_ttyname): Protect use of ttyname by HAVE_TTYNAME macro.

	* io/unix.c (stream_ttyname): Protect use of ttyname by
	HAVE_TTYNAME macro.
	* configure.ac: Add check for ttyname.
	* config.h.in: Regenerate.
	* configure: Regenerate.

From-SVN: r103794

libgfortran/ChangeLog

+2005-09-02  Francois-Xavier Coudert  <coudert@clipper.ens.fr>
+
+	* io/unix.c (stream_ttyname): Protect use of ttyname by
+	HAVE_TTYNAME macro.
+	* configure.ac: Add check for ttyname.
+	* config.h.in: Regenerate.
+	* configure: Regenerate.
+
 2005-09-02  Andreas Jaeger  <aj@suse.de>
 
 	* libgfortran.h: Add prototype for init_compile_options.

libgfortran/config.h.in

@@ -288,6 +288,9 @@
 /* libm includes truncf */
 #undef HAVE_TRUNCF
 
+/* Define to 1 if you have the `ttyname' function. */
+#undef HAVE_TTYNAME
+
 /* Define to 1 if you have the <unistd.h> header file. */
 #undef HAVE_UNISTD_H
 

libgfortran/configure

@@ -7409,7 +7409,8 @@ done
 
 
 
-for ac_func in sleep time
+
+for ac_func in sleep time ttyname
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5

libgfortran/configure.ac

@@ -171,7 +171,7 @@ AC_CHECK_LIB([m],[csin],[need_math="no"],[need_math="yes"])
 # Check for library functions.
 AC_CHECK_FUNCS(getrusage times mkstemp strtof strtold snprintf ftruncate chsize)
 AC_CHECK_FUNCS(chdir strerror getlogin gethostname kill link symlink perror)
-AC_CHECK_FUNCS(sleep time)
+AC_CHECK_FUNCS(sleep time ttyname)
 
 # Check libc for getgid, getpid, getuid
 AC_CHECK_LIB([c],[getgid],[AC_DEFINE([HAVE_GETGID],[1],[libc includes getgid])])

libgfortran/io/unix.c

@@ -1548,7 +1548,11 @@ stream_isatty (stream *s)
 char *
 stream_ttyname (stream *s)
 {
+#ifdef HAVE_TTYNAME
   return ttyname (((unix_stream *) s)->fd);
+#else
+  return NULL;
+#endif
 }