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