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1 /* This file is part of XEmacs.
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2
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3 XEmacs is free software; you can redistribute it and/or modify it
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4 under the terms of the GNU General Public License as published by the
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5 Free Software Foundation; either version 2, or (at your option) any
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6 later version.
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7
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8 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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9 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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10 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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11 for more details.
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12
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13 You should have received a copy of the GNU General Public License
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14 along with XEmacs; see the file COPYING. If not, write to
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15 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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16 Boston, MA 02111-1307, USA. */
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17
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18 /* Synched up with: FSF 19.30. */
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19
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20 /* Emulate getpagesize on systems that lack it. */
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21
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22 #if 0
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23 #ifdef __hpux
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24 #include <sys/types.h>
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25 static size_t getpagesize() { return( 4096 ); }
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26 #define HAVE_GETPAGESIZE
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27 #endif
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28 #endif
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29
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30 #ifndef HAVE_GETPAGESIZE
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31
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32 #ifdef VMS
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33 #define getpagesize() 512
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34 #endif
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35
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36 #ifdef HAVE_UNISTD_H
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37 #include <unistd.h>
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38 #endif
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39
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40 #ifdef _SC_PAGESIZE
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41 #define getpagesize() sysconf(_SC_PAGESIZE)
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42 #else
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43
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44 #include <sys/param.h>
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45
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46 #ifdef EXEC_PAGESIZE
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47 #define getpagesize() EXEC_PAGESIZE
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48 #else
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49 #ifdef NBPG
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50 #define getpagesize() NBPG * CLSIZE
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51 #ifndef CLSIZE
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52 #define CLSIZE 1
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53 #endif /* no CLSIZE */
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54 #else /* no NBPG */
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55 #if (defined (sparc) && defined (USG)) || defined (SOLARIS2)
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56 #define getpagesize() PAGESIZE
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57 #else /* not Solaris 2 */
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58 #ifdef NBPC
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59 #define getpagesize() NBPC
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60 #else /* no NBPC */
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61 #ifdef PAGESIZE
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62 #define getpagesize() PAGESIZE
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63 #endif
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64 #endif /* NBPC */
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65 #endif /* not Solaris 2 */
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66 #endif /* no NBPG */
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67 #endif /* no EXEC_PAGESIZE */
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68 #endif /* _SC_PAGESIZE */
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69 #endif /* not HAVE_GETPAGESIZE */
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70
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