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196 lines
5.1 KiB
C
196 lines
5.1 KiB
C
/* zconf.h -- configuration of the zlib compression library
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* Copyright (C) 1995-2016 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 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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# 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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/* Fallback for something that includes us. */
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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 uint32_t z_crc_t;
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#if 0 /* was set to #if 0 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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#endif /* ZCONF_H */
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