-/* Emulate getpagesize on systems that lack it. */
+/* Emulate getpagesize on systems that lack it.
+ Copyright (C) 1999, 2000, 2004, 2005 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+ USA. */
#ifndef HAVE_GETPAGESIZE
-#ifdef HAVE_UNISTD_H
-# include <unistd.h>
-#endif
+#include <unistd.h>
#if !defined getpagesize && defined _SC_PAGESIZE
-# if !(defined VMS && __VMS_VER < 70000000)
+# if ! (defined __VMS && __VMS_VER < 70000000)
# define getpagesize() sysconf (_SC_PAGESIZE)
# endif
#endif
-#if !defined getpagesize && defined VMS
+#if !defined getpagesize && defined __VMS
# ifdef __ALPHA
# define getpagesize() 8192
# else
# endif
#endif
-#ifndef getpagesize
+/* This is for BeOS. */
+#if !defined getpagesize && HAVE_OS_H
+# include <OS.h>
+# if defined B_PAGE_SIZE
+# define getpagesize() B_PAGE_SIZE
+# endif
+#endif
+
+/* This is for AmigaOS4.0. */
+#if !defined getpagesize && defined __amigaos4__
+# define getpagesize() 2048
+#endif
+
+#if !defined getpagesize && HAVE_SYS_PARAM_H
# include <sys/param.h>
# ifdef EXEC_PAGESIZE
# define getpagesize() EXEC_PAGESIZE