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164 lines
5.5 KiB
164 lines
5.5 KiB
/* |
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* jconfig.txt |
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* |
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* Copyright (C) 1991-1994, Thomas G. Lane. |
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* This file is part of the Independent JPEG Group's software. |
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* For conditions of distribution and use, see the accompanying README file. |
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* |
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* This file documents the configuration options that are required to |
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* customize the JPEG software for a particular system. |
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* |
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* The actual configuration options for a particular installation are stored |
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* in jconfig.h. On many machines, jconfig.h can be generated automatically |
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* or copied from one of the "canned" jconfig files that we supply. But if |
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* you need to generate a jconfig.h file by hand, this file tells you how. |
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* |
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* DO NOT EDIT THIS FILE --- IT WON'T ACCOMPLISH ANYTHING. |
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* EDIT A COPY NAMED JCONFIG.H. |
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*/ |
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/* |
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* These symbols indicate the properties of your machine or compiler. |
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* #define the symbol if yes, #undef it if no. |
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*/ |
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/* Does your compiler support function prototypes? |
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* (If not, you also need to use ansi2knr, see install.txt) |
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*/ |
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#define HAVE_PROTOTYPES |
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/* Does your compiler support the declaration "unsigned char" ? |
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* How about "unsigned short" ? |
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*/ |
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#define HAVE_UNSIGNED_CHAR |
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#define HAVE_UNSIGNED_SHORT |
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/* Define "void" as "char" if your compiler doesn't know about type void. |
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* NOTE: be sure to define void such that "void *" represents the most general |
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* pointer type, e.g., that returned by malloc(). |
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*/ |
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/* #define void char */ |
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/* Define "const" as empty if your compiler doesn't know the "const" keyword. |
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*/ |
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/* #define const */ |
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/* Define this if an ordinary "char" type is unsigned. |
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* If you're not sure, leaving it undefined will work at some cost in speed. |
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* If you defined HAVE_UNSIGNED_CHAR then the speed difference is minimal. |
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*/ |
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#undef CHAR_IS_UNSIGNED |
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/* Define this if your system has an ANSI-conforming <stddef.h> file. |
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*/ |
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#define HAVE_STDDEF_H |
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/* Define this if your system has an ANSI-conforming <stdlib.h> file. |
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*/ |
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#define HAVE_STDLIB_H |
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/* Define this if your system does not have an ANSI/SysV <string.h>, |
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* but does have a BSD-style <strings.h>. |
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*/ |
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#undef NEED_BSD_STRINGS |
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/* Define this if your system does not provide typedef size_t in any of the |
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* ANSI-standard places (stddef.h, stdlib.h, or stdio.h), but places it in |
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* <sys/types.h> instead. |
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*/ |
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#undef NEED_SYS_TYPES_H |
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/* For 80x86 machines, you need to define NEED_FAR_POINTERS, |
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* unless you are using a large-data memory model or 80386 flat-memory mode. |
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* On less brain-damaged CPUs this symbol must not be defined. |
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* (Defining this symbol causes large data structures to be referenced through |
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* "far" pointers and to be allocated with a special version of malloc.) |
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*/ |
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#undef NEED_FAR_POINTERS |
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/* Define this if your linker needs global names to be unique in less |
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* than the first 15 characters. |
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*/ |
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#undef NEED_SHORT_EXTERNAL_NAMES |
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/* Although a real ANSI C compiler can deal perfectly well with pointers to |
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* unspecified structures (see "incomplete types" in the spec), a few pre-ANSI |
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* and pseudo-ANSI compilers get confused. To keep one of these bozos happy, |
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* define INCOMPLETE_TYPES_BROKEN. This is not recommended unless you |
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* actually get "missing structure definition" warnings or errors while |
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* compiling the JPEG code. |
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*/ |
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#undef INCOMPLETE_TYPES_BROKEN |
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/* Define "boolean" as unsigned char, not int, on Windows systems. |
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*/ |
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#ifdef _WIN32 |
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#ifndef __RPCNDR_H__ /* don't conflict if rpcndr.h already read */ |
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typedef unsigned char boolean; |
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#endif |
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#define HAVE_BOOLEAN /* prevent jmorecfg.h from redefining it */ |
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#endif |
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/* |
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* The following options affect code selection within the JPEG library, |
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* but they don't need to be visible to applications using the library. |
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* To minimize application namespace pollution, the symbols won't be |
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* defined unless JPEG_INTERNALS has been defined. |
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*/ |
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#ifdef JPEG_INTERNALS |
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/* Define this if your compiler implements ">>" on signed values as a logical |
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* (unsigned) shift; leave it undefined if ">>" is a signed (arithmetic) shift, |
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* which is the normal and rational definition. |
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*/ |
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#undef RIGHT_SHIFT_IS_UNSIGNED |
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#endif /* JPEG_INTERNALS */ |
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/* |
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* The remaining options do not affect the JPEG library proper, |
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* but only the sample applications cjpeg/djpeg (see cjpeg.c, djpeg.c). |
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* Other applications can ignore these. |
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*/ |
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#ifdef JPEG_CJPEG_DJPEG |
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/* These defines indicate which image (non-JPEG) file formats are allowed. */ |
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#define BMP_SUPPORTED /* BMP image file format */ |
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#define GIF_SUPPORTED /* GIF image file format */ |
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#define PPM_SUPPORTED /* PBMPLUS PPM/PGM image file format */ |
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#undef RLE_SUPPORTED /* Utah RLE image file format */ |
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#define TARGA_SUPPORTED /* Targa image file format */ |
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/* Define this if you want to name both input and output files on the command |
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* line, rather than using stdout and optionally stdin. You MUST do this if |
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* your system can't cope with binary I/O to stdin/stdout. See comments at |
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* head of cjpeg.c or djpeg.c. |
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*/ |
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#undef TWO_FILE_COMMANDLINE |
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/* Define this if your system needs explicit cleanup of temporary files. |
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* This is crucial under MS-DOS, where the temporary "files" may be areas |
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* of extended memory; on most other systems it's not as important. |
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*/ |
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#undef NEED_SIGNAL_CATCHER |
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/* By default, we open image files with fopen(...,"rb") or fopen(...,"wb"). |
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* This is necessary on systems that distinguish text files from binary files, |
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* and is harmless on most systems that don't. If you have one of the rare |
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* systems that complains about the "b" spec, define this symbol. |
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*/ |
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#undef DONT_USE_B_MODE |
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/* Define this if you want percent-done progress reports from cjpeg/djpeg. |
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*/ |
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#undef PROGRESS_REPORT |
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#endif /* JPEG_CJPEG_DJPEG */
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