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/src/FreeImage/Source/LibJPEG/jconfig.txt

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  1/*
  2 * jconfig.txt
  3 *
  4 * Copyright (C) 1991-1994, Thomas G. Lane.
  5 * This file is part of the Independent JPEG Group's software.
  6 * For conditions of distribution and use, see the accompanying README file.
  7 *
  8 * This file documents the configuration options that are required to
  9 * customize the JPEG software for a particular system.
 10 *
 11 * The actual configuration options for a particular installation are stored
 12 * in jconfig.h.  On many machines, jconfig.h can be generated automatically
 13 * or copied from one of the "canned" jconfig files that we supply.  But if
 14 * you need to generate a jconfig.h file by hand, this file tells you how.
 15 *
 16 * DO NOT EDIT THIS FILE --- IT WON'T ACCOMPLISH ANYTHING.
 17 * EDIT A COPY NAMED JCONFIG.H.
 18 */
 19
 20
 21/*
 22 * These symbols indicate the properties of your machine or compiler.
 23 * #define the symbol if yes, #undef it if no.
 24 */
 25
 26/* Does your compiler support function prototypes?
 27 * (If not, you also need to use ansi2knr, see install.txt)
 28 */
 29#define HAVE_PROTOTYPES
 30
 31/* Does your compiler support the declaration "unsigned char" ?
 32 * How about "unsigned short" ?
 33 */
 34#define HAVE_UNSIGNED_CHAR
 35#define HAVE_UNSIGNED_SHORT
 36
 37/* Define "void" as "char" if your compiler doesn't know about type void.
 38 * NOTE: be sure to define void such that "void *" represents the most general
 39 * pointer type, e.g., that returned by malloc().
 40 */
 41/* #define void char */
 42
 43/* Define "const" as empty if your compiler doesn't know the "const" keyword.
 44 */
 45/* #define const */
 46
 47/* Define this if an ordinary "char" type is unsigned.
 48 * If you're not sure, leaving it undefined will work at some cost in speed.
 49 * If you defined HAVE_UNSIGNED_CHAR then the speed difference is minimal.
 50 */
 51#undef CHAR_IS_UNSIGNED
 52
 53/* Define this if your system has an ANSI-conforming <stddef.h> file.
 54 */
 55#define HAVE_STDDEF_H
 56
 57/* Define this if your system has an ANSI-conforming <stdlib.h> file.
 58 */
 59#define HAVE_STDLIB_H
 60
 61/* Define this if your system does not have an ANSI/SysV <string.h>,
 62 * but does have a BSD-style <strings.h>.
 63 */
 64#undef NEED_BSD_STRINGS
 65
 66/* Define this if your system does not provide typedef size_t in any of the
 67 * ANSI-standard places (stddef.h, stdlib.h, or stdio.h), but places it in
 68 * <sys/types.h> instead.
 69 */
 70#undef NEED_SYS_TYPES_H
 71
 72/* For 80x86 machines, you need to define NEED_FAR_POINTERS,
 73 * unless you are using a large-data memory model or 80386 flat-memory mode.
 74 * On less brain-damaged CPUs this symbol must not be defined.
 75 * (Defining this symbol causes large data structures to be referenced through
 76 * "far" pointers and to be allocated with a special version of malloc.)
 77 */
 78#undef NEED_FAR_POINTERS
 79
 80/* Define this if your linker needs global names to be unique in less
 81 * than the first 15 characters.
 82 */
 83#undef NEED_SHORT_EXTERNAL_NAMES
 84
 85/* Although a real ANSI C compiler can deal perfectly well with pointers to
 86 * unspecified structures (see "incomplete types" in the spec), a few pre-ANSI
 87 * and pseudo-ANSI compilers get confused.  To keep one of these bozos happy,
 88 * define INCOMPLETE_TYPES_BROKEN.  This is not recommended unless you
 89 * actually get "missing structure definition" warnings or errors while
 90 * compiling the JPEG code.
 91 */
 92#undef INCOMPLETE_TYPES_BROKEN
 93
 94/* Define "boolean" as unsigned char, not int, on Windows systems.
 95 */
 96#ifdef _WIN32
 97#ifndef __RPCNDR_H__		/* don't conflict if rpcndr.h already read */
 98typedef unsigned char boolean;
 99#endif
100#define HAVE_BOOLEAN		/* prevent jmorecfg.h from redefining it */
101#endif
102
103
104/*
105 * The following options affect code selection within the JPEG library,
106 * but they don't need to be visible to applications using the library.
107 * To minimize application namespace pollution, the symbols won't be
108 * defined unless JPEG_INTERNALS has been defined.
109 */
110
111#ifdef JPEG_INTERNALS
112
113/* Define this if your compiler implements ">>" on signed values as a logical
114 * (unsigned) shift; leave it undefined if ">>" is a signed (arithmetic) shift,
115 * which is the normal and rational definition.
116 */
117#undef RIGHT_SHIFT_IS_UNSIGNED
118
119
120#endif /* JPEG_INTERNALS */
121
122
123/*
124 * The remaining options do not affect the JPEG library proper,
125 * but only the sample applications cjpeg/djpeg (see cjpeg.c, djpeg.c).
126 * Other applications can ignore these.
127 */
128
129#ifdef JPEG_CJPEG_DJPEG
130
131/* These defines indicate which image (non-JPEG) file formats are allowed. */
132
133#define BMP_SUPPORTED		/* BMP image file format */
134#define GIF_SUPPORTED		/* GIF image file format */
135#define PPM_SUPPORTED		/* PBMPLUS PPM/PGM image file format */
136#undef RLE_SUPPORTED		/* Utah RLE image file format */
137#define TARGA_SUPPORTED		/* Targa image file format */
138
139/* Define this if you want to name both input and output files on the command
140 * line, rather than using stdout and optionally stdin.  You MUST do this if
141 * your system can't cope with binary I/O to stdin/stdout.  See comments at
142 * head of cjpeg.c or djpeg.c.
143 */
144#undef TWO_FILE_COMMANDLINE
145
146/* Define this if your system needs explicit cleanup of temporary files.
147 * This is crucial under MS-DOS, where the temporary "files" may be areas
148 * of extended memory; on most other systems it's not as important.
149 */
150#undef NEED_SIGNAL_CATCHER
151
152/* By default, we open image files with fopen(...,"rb") or fopen(...,"wb").
153 * This is necessary on systems that distinguish text files from binary files,
154 * and is harmless on most systems that don't.  If you have one of the rare
155 * systems that complains about the "b" spec, define this symbol.
156 */
157#undef DONT_USE_B_MODE
158
159/* Define this if you want percent-done progress reports from cjpeg/djpeg.
160 */
161#undef PROGRESS_REPORT
162
163
164#endif /* JPEG_CJPEG_DJPEG */