--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libiberty/choose-temp.c	Fri Jul 17 14:47:48 2009 +0900
@@ -0,0 +1,71 @@
+/* Utility to pick a temporary filename prefix.
+   Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
+
+This file is part of the libiberty library.
+Libiberty is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public
+License as published by the Free Software Foundation; either
+version 2 of the License, or (at your option) any later version.
+
+Libiberty is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with libiberty; see the file COPYING.LIB.  If not,
+write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+Boston, MA 02110-1301, USA.  */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdio.h>	/* May get P_tmpdir.  */
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#ifdef HAVE_STRING_H
+#include <string.h>
+#endif
+
+#include "libiberty.h"
+extern char *choose_tmpdir (void);
+
+/* Name of temporary file.
+   mktemp requires 6 trailing X's.  */
+#define TEMP_FILE "ccXXXXXX"
+#define TEMP_FILE_LEN (sizeof(TEMP_FILE) - 1)
+
+/*
+
+@deftypefn Extension char* choose_temp_base (void)
+
+Return a prefix for temporary file names or @code{NULL} if unable to
+find one.  The current directory is chosen if all else fails so the
+program is exited if a temporary directory can't be found (@code{mktemp}
+fails).  The buffer for the result is obtained with @code{xmalloc}.
+
+This function is provided for backwards compatibility only.  Its use is
+not recommended.
+
+@end deftypefn
+
+*/
+
+char *
+choose_temp_base (void)
+{
+  const char *base = choose_tmpdir ();
+  char *temp_filename;
+  int len;
+
+  len = strlen (base);
+  temp_filename = XNEWVEC (char, len + TEMP_FILE_LEN + 1);
+  strcpy (temp_filename, base);
+  strcpy (temp_filename + len, TEMP_FILE);
+
+  if (mktemp (temp_filename) == 0)
+    abort ();
+  return temp_filename;
+}