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/* $Header: /usr/people/sam/tiff/libtiff/RCS/tiffcomp.h,v 1.47 1996/01/10 19:33:24 sam Exp $ */
/*
* Copyright (c) 1990-1996 Sam Leffler
* Copyright (c) 1991-1996 Silicon Graphics, Inc.
*
* Permission to use, copy, modify, distribute, and sell this software and
* its documentation for any purpose is hereby granted without fee, provided
* that (i) the above copyright notices and this permission notice appear in
* all copies of the software and related documentation, and (ii) the names of
* Sam Leffler and Silicon Graphics may not be used in any advertising or
* publicity relating to the software without the specific, prior written
* permission of Sam Leffler and Silicon Graphics.
*
* THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
* EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
* WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
*
* IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
* ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
* OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
* WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
* LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
* OF THIS SOFTWARE.
*/
#ifndef _COMPAT_
#define _COMPAT_
/*
* This file contains a hodgepodge of definitions and
* declarations that are needed to provide compatibility
* between the native system and the base implementation
* that the library assumes.
*
* NB: This file is a mess.
*/
/*
* Setup basic type definitions and function declaratations.
*/
/*
* Simplify Acorn RISC OS identifier (to avoid confusion with Acorn RISC iX
* and with defunct Unix Risc OS)
* No need to specify __arm - hey, Acorn might port the OS, no problem here!
*/
#ifdef __acornriscos
#undef __acornriscos
#endif
#if defined(__acorn) && defined(__riscos)
#define __acornriscos
#endif
#if defined(__MWERKS__) || defined(THINK_C)
#include <unix.h>
#include <math.h>
#endif
#include <stdio.h>
#if defined(__PPCC__) || defined(__SC__) || defined(__MRC__)
#include <types.h>
#elif !defined(__MWERKS__) && !defined(THINK_C) && !defined(__acornriscos)
#include <sys/types.h>
#endif
#if defined(VMS)
#include <file.h>
#include <unixio.h>
#elif !defined(__acornriscos)
#include <fcntl.h>
#endif
/*
* This maze of checks controls defines or not the
* target system has BSD-style typdedefs declared in
* an include file and/or whether or not to include
* <unistd.h> to get the SEEK_* definitions. Some
* additional includes are also done to pull in the
* appropriate definitions we're looking for.
*/
#if defined(__MWERKS__) || defined(THINK_C) || defined(__PPCC__) || defined(__SC__) || defined(__MRC__)
#include <stdlib.h>
#define BSDTYPES
#define HAVE_UNISTD_H 0
#elif defined(_WINDOWS) || defined(__WIN32__) || defined(_Windows)
#define BSDTYPES
#elif defined(OS2_16) || defined(OS2_32)
#define BSDTYPES
#elif defined(__acornriscos)
#include <stdlib.h>
#define BSDTYPES
#define HAVE_UNISTD_H 0
#elif defined(VMS)
#define HAVE_UNISTD_H 0
#else
#define HAVE_UNISTD_H 1
#endif
/*
* The library uses the ANSI C/POSIX SEEK_*
* definitions that should be defined in unistd.h
* (except on system where they are in stdio.h and
* there is no unistd.h).
*/
#if !defined(SEEK_SET) && HAVE_UNISTD_H
#include <unistd.h>
#endif
/*
* The library uses memset, memcpy, and memcmp.
* ANSI C and System V define these in string.h.
*/
#include <string.h>
/*
* The BSD typedefs are used throughout the library.
* If your system doesn't have them in <sys/types.h>,
* then define BSDTYPES in your Makefile.
*/
#if defined(BSDTYPES)
typedef unsigned char u_char;
typedef unsigned short u_short;
typedef unsigned int u_int;
typedef unsigned long u_long;
#endif
/*
* dblparam_t is the type that a double precision
* floating point value will have on the parameter
* stack (when coerced by the compiler).
*/
/* Note: on MacPowerPC "extended" is undefined. So only use it for 68K-Macs */
#if defined(__SC__) || defined(THINK_C)
typedef extended dblparam_t;
#else
typedef double dblparam_t;
#endif
/*
* If your compiler supports inline functions, then
* set INLINE appropriately to get the known hotspots
* in the library expanded inline.
*/
#if defined(__GNUC__)
#if defined(__STRICT_ANSI__)
#define INLINE __inline__
#else
#define INLINE inline
#endif
#else /* !__GNUC__ */
#define INLINE
#endif
/*
* GLOBALDATA is a macro that is used to define global variables
* private to the library. We use this indirection to hide
* brain-damage in VAXC (and GCC) under VAX/VMS. In these
* environments the macro places the variable in a non-shareable
* program section, which ought to be done by default (sigh!)
*
* Apparently DEC are aware of the problem as this behaviour is the
* default under VMS on AXP.
*
* The GNU C variant is untested.
*/
#if defined(VAX) && defined(VMS)
#if defined(VAXC)
#define GLOBALDATA(TYPE,NAME) extern noshare TYPE NAME
#endif
#if defined(__GNUC__)
#define GLOBALDATA(TYPE,NAME) extern TYPE NAME \
asm("_$$PsectAttributes_NOSHR$$" #NAME)
#endif
#else /* !VAX/VMS */
#define GLOBALDATA(TYPE,NAME) extern TYPE NAME
#endif
#if defined(__acornriscos)
/*
* osfcn.h is part of C++Lib on Acorn C/C++, and as such can't be used
* on C alone. For that reason, the relevant functions are
* implemented in tif_acorn.c, and the elements from the header
* file are included here.
*/
#if defined(__cplusplus)
#include <osfcn.h>
#else
#define O_RDONLY 0
#define O_WRONLY 1
#define O_RDWR 2
#define O_APPEND 8
#define O_CREAT 0x200
#define O_TRUNC 0x400
typedef long off_t;
extern int open(const char *name, int flags, int mode);
extern int close(int fd);
extern int write(int fd, const char *buf, int nbytes);
extern int read(int fd, char *buf, int nbytes);
extern off_t lseek(int fd, off_t offset, int whence);
extern int creat(const char *path, int mode);
#endif /* __cplusplus */
#endif /* __acornriscos */
#endif /* _COMPAT_ */
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