Add description of +LINE:COLUMN.

[gnu-emacs] / src / getpagesize.h

diff --git a/src/getpagesize.h b/src/getpagesize.h
index eb5109db78bc1134a64a7187ab6176e5fbeae62e..4d52618339339798a73773e2d4940256204e8ddb 100644 (file)
--- a/src/getpagesize.h
+++ b/src/getpagesize.h
@@ -1,4 +1,22 @@
-/* Emulate getpagesize on systems that lack it.  */
+/* Emulate getpagesize on systems that lack it.
+   Copyright (C) 1986, 1992, 1995, 2001 Free Software Foundation, Inc.
+
+This file is part of GNU Emacs.
+
+GNU Emacs 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.
+
+GNU Emacs 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 GNU Emacs; see the file COPYING.  If not, write to
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
 
 #ifndef HAVE_GETPAGESIZE
 
@@ -12,26 +30,30 @@
 
 # ifdef _SC_PAGESIZE
 #  define getpagesize() sysconf(_SC_PAGESIZE)
-# else
-#  include <sys/param.h>
-#  ifdef EXEC_PAGESIZE
-#   define getpagesize() EXEC_PAGESIZE
-#  else /* no EXEC_PAGESIZE */
-#   ifdef NBPG
-#    define getpagesize() NBPG * CLSIZE
-#    ifndef CLSIZE
-#     define CLSIZE 1
-#    endif /* no CLSIZE */
-#   else /* no NBPG */
-#    ifdef NBPC
-#     define getpagesize() NBPC
-#    else /* no NBPC */
-#     ifdef PAGESIZE
-#      define getpagesize() PAGESIZE
-#     endif /* PAGESIZE */
-#    endif /* no NBPC */
-#   endif /* no NBPG */
-#  endif /* no EXEC_PAGESIZE */
+# else /* no _SC_PAGESIZE */
+#  ifdef HAVE_SYS_PARAM_H
+#   include <sys/param.h>
+#   ifdef EXEC_PAGESIZE
+#    define getpagesize() EXEC_PAGESIZE
+#   else /* no EXEC_PAGESIZE */
+#    ifdef NBPG
+#     define getpagesize() NBPG * CLSIZE
+#     ifndef CLSIZE
+#      define CLSIZE 1
+#     endif /* no CLSIZE */
+#    else /* no NBPG */
+#     ifdef NBPC
+#      define getpagesize() NBPC
+#     else /* no NBPC */
+#      ifdef PAGESIZE
+#       define getpagesize() PAGESIZE
+#      endif /* PAGESIZE */
+#     endif /* no NBPC */
+#    endif /* no NBPG */
+#   endif /* no EXEC_PAGESIZE */
+#  else /* no HAVE_SYS_PARAM_H */
+#   define getpagesize() 8192  /* punt totally */
+#  endif /* no HAVE_SYS_PARAM_H */
 # endif /* no _SC_PAGESIZE */
 
 #endif /* no HAVE_GETPAGESIZE */