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206 lines
5.4 KiB
206 lines
5.4 KiB
/* zconf.h -- configuration of the zlib compression library |
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* Copyright (C) 1995-2024 Jean-loup Gailly, Mark Adler |
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* For conditions of distribution and use, see copyright notice in zlib.h |
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*/ |
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#ifndef ZCONF_H |
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#define ZCONF_H |
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#include "zlib_name_mangling.h" |
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#if !defined(_WIN32) && defined(__WIN32__) |
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# define _WIN32 |
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#endif |
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/* Clang macro for detecting declspec support |
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* https://clang.llvm.org/docs/LanguageExtensions.html#has-declspec-attribute |
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*/ |
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#ifndef __has_declspec_attribute |
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# define __has_declspec_attribute(x) 0 |
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#endif |
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#if defined(ZLIB_CONST) && !defined(z_const) |
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# define z_const const |
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#else |
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# define z_const |
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#endif |
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/* Maximum value for memLevel in deflateInit2 */ |
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#ifndef MAX_MEM_LEVEL |
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# define MAX_MEM_LEVEL 9 |
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#endif |
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/* Maximum value for windowBits in deflateInit2 and inflateInit2. |
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* WARNING: reducing MAX_WBITS makes minigzip unable to extract .gz files |
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* created by gzip. (Files created by minigzip can still be extracted by |
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* gzip.) |
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*/ |
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#ifndef MIN_WBITS |
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# define MIN_WBITS 8 /* 256 LZ77 window */ |
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#endif |
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#ifndef MAX_WBITS |
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# define MAX_WBITS 15 /* 32K LZ77 window */ |
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#endif |
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/* The memory requirements for deflate are (in bytes): |
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(1 << (windowBits+2)) + (1 << (memLevel+9)) |
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that is: 128K for windowBits=15 + 128K for memLevel = 8 (default values) |
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plus a few kilobytes for small objects. For example, if you want to reduce |
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the default memory requirements from 256K to 128K, compile with |
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make CFLAGS="-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7" |
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Of course this will generally degrade compression (there's no free lunch). |
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The memory requirements for inflate are (in bytes) 1 << windowBits |
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that is, 32K for windowBits=15 (default value) plus about 7 kilobytes |
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for small objects. |
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*/ |
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/* Type declarations */ |
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#ifndef OF /* function prototypes */ |
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# define OF(args) args |
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#endif |
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#ifdef ZLIB_INTERNAL |
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# define Z_INTERNAL ZLIB_INTERNAL |
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#endif |
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/* If building or using zlib as a DLL, define ZLIB_DLL. |
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* This is not mandatory, but it offers a little performance increase. |
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*/ |
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#if defined(ZLIB_DLL) && (defined(_WIN32) || (__has_declspec_attribute(dllexport) && __has_declspec_attribute(dllimport))) |
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# ifdef Z_INTERNAL |
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# define Z_EXTERN extern __declspec(dllexport) |
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# else |
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# define Z_EXTERN extern __declspec(dllimport) |
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# endif |
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#endif |
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/* If building or using zlib with the WINAPI/WINAPIV calling convention, |
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* define ZLIB_WINAPI. |
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* Caution: the standard ZLIB1.DLL is NOT compiled using ZLIB_WINAPI. |
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*/ |
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#if defined(ZLIB_WINAPI) && defined(_WIN32) |
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# ifndef WIN32_LEAN_AND_MEAN |
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# define WIN32_LEAN_AND_MEAN |
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# endif |
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# include <windows.h> |
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/* No need for _export, use ZLIB.DEF instead. */ |
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/* For complete Windows compatibility, use WINAPI, not __stdcall. */ |
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# define Z_EXPORT WINAPI |
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# define Z_EXPORTVA WINAPIV |
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#endif |
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#ifndef Z_EXTERN |
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# define Z_EXTERN extern |
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#endif |
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#ifndef Z_EXPORT |
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# define Z_EXPORT |
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#endif |
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#ifndef Z_EXPORTVA |
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# define Z_EXPORTVA |
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#endif |
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/* Conditional exports */ |
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#define ZNG_CONDEXPORT Z_INTERNAL |
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/* For backwards compatibility */ |
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#ifndef ZEXTERN |
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# define ZEXTERN Z_EXTERN |
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#endif |
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#ifndef ZEXPORT |
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# define ZEXPORT Z_EXPORT |
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#endif |
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#ifndef ZEXPORTVA |
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# define ZEXPORTVA Z_EXPORTVA |
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#endif |
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#ifndef FAR |
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# define FAR |
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#endif |
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/* Legacy zlib typedefs for backwards compatibility. Don't assume stdint.h is defined. */ |
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typedef unsigned char Byte; |
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typedef Byte Bytef; |
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typedef unsigned int uInt; /* 16 bits or more */ |
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typedef unsigned long uLong; /* 32 bits or more */ |
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typedef char charf; |
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typedef int intf; |
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typedef uInt uIntf; |
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typedef uLong uLongf; |
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typedef void const *voidpc; |
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typedef void *voidpf; |
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typedef void *voidp; |
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typedef unsigned int z_crc_t; |
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#ifdef HAVE_UNISTD_H /* may be set to #if 1 by configure/cmake/etc */ |
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# define Z_HAVE_UNISTD_H |
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#endif |
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#ifdef NEED_PTRDIFF_T /* may be set to #if 1 by configure/cmake/etc */ |
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typedef PTRDIFF_TYPE ptrdiff_t; |
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#endif |
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#include <sys/types.h> /* for off_t */ |
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#include <stddef.h> /* for wchar_t and NULL */ |
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/* a little trick to accommodate both "#define _LARGEFILE64_SOURCE" and |
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* "#define _LARGEFILE64_SOURCE 1" as requesting 64-bit operations, (even |
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* though the former does not conform to the LFS document), but considering |
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* both "#undef _LARGEFILE64_SOURCE" and "#define _LARGEFILE64_SOURCE 0" as |
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* equivalently requesting no 64-bit operations |
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*/ |
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#if defined(_LARGEFILE64_SOURCE) && -_LARGEFILE64_SOURCE - -1 == 1 |
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# undef _LARGEFILE64_SOURCE |
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#endif |
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#if defined(Z_HAVE_UNISTD_H) || defined(_LARGEFILE64_SOURCE) |
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# include <unistd.h> /* for SEEK_*, off_t, and _LFS64_LARGEFILE */ |
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# ifndef z_off_t |
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# define z_off_t off_t |
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# endif |
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#endif |
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#if defined(_LFS64_LARGEFILE) && _LFS64_LARGEFILE-0 |
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# define Z_LFS64 |
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#endif |
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#if defined(_LARGEFILE64_SOURCE) && defined(Z_LFS64) |
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# define Z_LARGE64 |
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#endif |
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#if defined(_FILE_OFFSET_BITS) && _FILE_OFFSET_BITS-0 == 64 && defined(Z_LFS64) |
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# define Z_WANT64 |
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#endif |
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#if !defined(SEEK_SET) |
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# define SEEK_SET 0 /* Seek from beginning of file. */ |
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# define SEEK_CUR 1 /* Seek from current position. */ |
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# define SEEK_END 2 /* Set file pointer to EOF plus "offset" */ |
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#endif |
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#ifndef z_off_t |
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# define z_off_t long |
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#endif |
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#if !defined(_WIN32) && defined(Z_LARGE64) |
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# define z_off64_t off64_t |
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#else |
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# if defined(__MSYS__) |
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# define z_off64_t _off64_t |
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# elif defined(_WIN32) && !defined(__GNUC__) |
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# define z_off64_t __int64 |
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# else |
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# define z_off64_t z_off_t |
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# endif |
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#endif |
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typedef size_t z_size_t; |
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#endif /* ZCONF_H */
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