-#ifndef SETENV_H
-#define SETENV_H 1
-
-#undef __P
-#if defined (__STDC__) && __STDC__
-#define __P(x) x
-#else
-#define __P(x) ()
+/* Setting environment variables.
+ Copyright (C) 2001-2003 Free Software Foundation, Inc.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2, or (at your option)
+ any later version.
+
+ This program 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software Foundation,
+ Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+#if HAVE_SETENV || HAVE_UNSETENV
+
+/* Get setenv(), unsetenv() declarations. */
+# include <stdlib.h>
+
+#endif
+
+#ifdef __cplusplus
+extern "C" {
#endif
-int
- setenv __P ((const char *name, const char *value, int replace));
+#if !HAVE_SETENV
-void
- unsetenv __P ((const char *name));
+/* Set NAME to VALUE in the environment.
+ If REPLACE is nonzero, overwrite an existing value. */
+extern int setenv (const char *name, const char *value, int replace);
-#endif /* SETENV_H */
+#endif
+
+#if !HAVE_UNSETENV
+
+/* Remove the variable NAME from the environment. */
+extern int unsetenv (const char *name);
+
+#endif
+
+#ifdef __cplusplus
+}
+#endif