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