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/* * jconfig.txt * * This file was part of the Independent JPEG Group's software: * Copyright (C) 1991-1994, Thomas G. Lane. * It was modified by The libjpeg-turbo Project to include only code relevant * to libjpeg-turbo. * For conditions of distribution and use, see the accompanying README.ijg * 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 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 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 /* 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 /* Define "boolean" as unsigned char, not int, on Windows systems. */ #ifdef _WIN32 #ifndef __RPCNDR_H__ /* don't conflict if rpcndr.h already read */ typedef unsigned char boolean; #endif #define HAVE_BOOLEAN /* prevent jmorecfg.h from redefining it */ #endif /* * 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 */ #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 /* 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 */