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Open Source Computer Vision Library
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260 lines
7.8 KiB
260 lines
7.8 KiB
#ifndef _ZBUILD_H |
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#define _ZBUILD_H |
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#define _POSIX_SOURCE 1 /* fileno */ |
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#ifndef _POSIX_C_SOURCE |
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# define _POSIX_C_SOURCE 200809L /* snprintf, posix_memalign, strdup */ |
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#endif |
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#ifndef _ISOC11_SOURCE |
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# define _ISOC11_SOURCE 1 /* aligned_alloc */ |
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#endif |
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#ifdef __OpenBSD__ |
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# define _BSD_SOURCE 1 |
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#endif |
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#include <stddef.h> |
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#include <string.h> |
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#include <stdlib.h> |
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#include <stdint.h> |
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/* Determine compiler version of C Standard */ |
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#ifdef __STDC_VERSION__ |
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# if __STDC_VERSION__ >= 199901L |
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# ifndef STDC99 |
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# define STDC99 |
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# endif |
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# endif |
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# if __STDC_VERSION__ >= 201112L |
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# ifndef STDC11 |
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# define STDC11 |
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# endif |
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# endif |
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#endif |
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#ifndef Z_HAS_ATTRIBUTE |
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# if defined(__has_attribute) |
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# define Z_HAS_ATTRIBUTE(a) __has_attribute(a) |
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# else |
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# define Z_HAS_ATTRIBUTE(a) 0 |
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# endif |
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#endif |
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#ifndef Z_FALLTHROUGH |
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# if Z_HAS_ATTRIBUTE(__fallthrough__) || (defined(__GNUC__) && (__GNUC__ >= 7)) |
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# define Z_FALLTHROUGH __attribute__((__fallthrough__)) |
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# else |
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# define Z_FALLTHROUGH do {} while(0) /* fallthrough */ |
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# endif |
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#endif |
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#ifndef Z_TARGET |
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# if Z_HAS_ATTRIBUTE(__target__) |
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# define Z_TARGET(x) __attribute__((__target__(x))) |
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# else |
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# define Z_TARGET(x) |
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# endif |
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#endif |
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/* This has to be first include that defines any types */ |
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#if defined(_MSC_VER) |
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# if defined(_WIN64) |
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typedef __int64 ssize_t; |
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# else |
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typedef long ssize_t; |
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# endif |
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# if defined(_WIN64) |
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#define SSIZE_MAX _I64_MAX |
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# else |
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#define SSIZE_MAX LONG_MAX |
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# endif |
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#endif |
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/* MS Visual Studio does not allow inline in C, only C++. |
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But it provides __inline instead, so use that. */ |
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#if defined(_MSC_VER) && !defined(inline) && !defined(__cplusplus) |
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# define inline __inline |
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#endif |
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#if defined(ZLIB_COMPAT) |
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# define PREFIX(x) x |
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# define PREFIX2(x) ZLIB_ ## x |
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# define PREFIX3(x) z_ ## x |
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# define PREFIX4(x) x ## 64 |
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# define zVersion zlibVersion |
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#else |
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# define PREFIX(x) zng_ ## x |
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# define PREFIX2(x) ZLIBNG_ ## x |
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# define PREFIX3(x) zng_ ## x |
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# define PREFIX4(x) zng_ ## x |
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# define zVersion zlibng_version |
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# define z_size_t size_t |
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#endif |
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/* In zlib-compat some functions and types use unsigned long, but zlib-ng use size_t */ |
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#if defined(ZLIB_COMPAT) |
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# define z_uintmax_t unsigned long |
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#else |
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# define z_uintmax_t size_t |
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#endif |
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/* Minimum of a and b. */ |
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#define MIN(a, b) ((a) > (b) ? (b) : (a)) |
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/* Maximum of a and b. */ |
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#define MAX(a, b) ((a) < (b) ? (b) : (a)) |
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/* Ignore unused variable warning */ |
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#define Z_UNUSED(var) (void)(var) |
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#if defined(HAVE_VISIBILITY_INTERNAL) |
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# define Z_INTERNAL __attribute__((visibility ("internal"))) |
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#elif defined(HAVE_VISIBILITY_HIDDEN) |
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# define Z_INTERNAL __attribute__((visibility ("hidden"))) |
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#else |
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# define Z_INTERNAL |
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#endif |
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/* Symbol versioning helpers, allowing multiple versions of a function to exist. |
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* Functions using this must also be added to zlib-ng.map for each version. |
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* Double @@ means this is the default for newly compiled applications to link against. |
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* Single @ means this is kept for backwards compatibility. |
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* This is only used for Zlib-ng native API, and only on platforms supporting this. |
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*/ |
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#if defined(HAVE_SYMVER) |
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# define ZSYMVER(func,alias,ver) __asm__(".symver " func ", " alias "@ZLIB_NG_" ver); |
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# define ZSYMVER_DEF(func,alias,ver) __asm__(".symver " func ", " alias "@@ZLIB_NG_" ver); |
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#else |
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# define ZSYMVER(func,alias,ver) |
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# define ZSYMVER_DEF(func,alias,ver) |
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#endif |
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#ifndef __cplusplus |
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# define Z_REGISTER register |
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#else |
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# define Z_REGISTER |
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#endif |
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/* Reverse the bytes in a value. Use compiler intrinsics when |
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possible to take advantage of hardware implementations. */ |
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#if defined(_MSC_VER) && (_MSC_VER >= 1300) |
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# include <stdlib.h> |
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# pragma intrinsic(_byteswap_ulong) |
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# define ZSWAP16(q) _byteswap_ushort(q) |
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# define ZSWAP32(q) _byteswap_ulong(q) |
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# define ZSWAP64(q) _byteswap_uint64(q) |
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#elif defined(__clang__) || (defined(__GNUC__) && \ |
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(__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8))) |
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# define ZSWAP16(q) __builtin_bswap16(q) |
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# define ZSWAP32(q) __builtin_bswap32(q) |
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# define ZSWAP64(q) __builtin_bswap64(q) |
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#elif defined(__GNUC__) && (__GNUC__ >= 2) && defined(__linux__) |
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# include <byteswap.h> |
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# define ZSWAP16(q) bswap_16(q) |
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# define ZSWAP32(q) bswap_32(q) |
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# define ZSWAP64(q) bswap_64(q) |
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#elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__DragonFly__) |
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# include <sys/endian.h> |
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# define ZSWAP16(q) bswap16(q) |
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# define ZSWAP32(q) bswap32(q) |
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# define ZSWAP64(q) bswap64(q) |
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#elif defined(__OpenBSD__) |
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# include <sys/endian.h> |
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# define ZSWAP16(q) swap16(q) |
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# define ZSWAP32(q) swap32(q) |
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# define ZSWAP64(q) swap64(q) |
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#elif defined(__INTEL_COMPILER) |
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/* ICC does not provide a two byte swap. */ |
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# define ZSWAP16(q) ((((q) & 0xff) << 8) | (((q) & 0xff00) >> 8)) |
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# define ZSWAP32(q) _bswap(q) |
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# define ZSWAP64(q) _bswap64(q) |
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#else |
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# define ZSWAP16(q) ((((q) & 0xff) << 8) | (((q) & 0xff00) >> 8)) |
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# define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \ |
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(((q) & 0xff00) << 8) + (((q) & 0xff) << 24)) |
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# define ZSWAP64(q) \ |
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(((q & 0xFF00000000000000u) >> 56u) | \ |
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((q & 0x00FF000000000000u) >> 40u) | \ |
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((q & 0x0000FF0000000000u) >> 24u) | \ |
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((q & 0x000000FF00000000u) >> 8u) | \ |
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((q & 0x00000000FF000000u) << 8u) | \ |
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((q & 0x0000000000FF0000u) << 24u) | \ |
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((q & 0x000000000000FF00u) << 40u) | \ |
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((q & 0x00000000000000FFu) << 56u)) |
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#endif |
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/* Only enable likely/unlikely if the compiler is known to support it */ |
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#if (defined(__GNUC__) && (__GNUC__ >= 3)) || defined(__INTEL_COMPILER) || defined(__clang__) |
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# define LIKELY_NULL(x) __builtin_expect((x) != 0, 0) |
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# define LIKELY(x) __builtin_expect(!!(x), 1) |
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# define UNLIKELY(x) __builtin_expect(!!(x), 0) |
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#else |
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# define LIKELY_NULL(x) x |
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# define LIKELY(x) x |
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# define UNLIKELY(x) x |
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#endif /* (un)likely */ |
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#if defined(HAVE_ATTRIBUTE_ALIGNED) |
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# define ALIGNED_(x) __attribute__ ((aligned(x))) |
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#elif defined(_MSC_VER) |
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# define ALIGNED_(x) __declspec(align(x)) |
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#endif |
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/* Diagnostic functions */ |
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#ifdef ZLIB_DEBUG |
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# include <stdio.h> |
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extern int Z_INTERNAL z_verbose; |
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extern void Z_INTERNAL z_error(const char *m); |
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# define Assert(cond, msg) {if (!(cond)) z_error(msg);} |
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# define Trace(x) {if (z_verbose >= 0) fprintf x;} |
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# define Tracev(x) {if (z_verbose > 0) fprintf x;} |
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# define Tracevv(x) {if (z_verbose > 1) fprintf x;} |
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# define Tracec(c, x) {if (z_verbose > 0 && (c)) fprintf x;} |
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# define Tracecv(c, x) {if (z_verbose > 1 && (c)) fprintf x;} |
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#else |
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# define Assert(cond, msg) |
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# define Trace(x) |
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# define Tracev(x) |
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# define Tracevv(x) |
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# define Tracec(c, x) |
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# define Tracecv(c, x) |
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#endif |
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#ifndef NO_UNALIGNED |
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# if defined(__x86_64__) || defined(_M_X64) || defined(__amd64__) || defined(_M_AMD64) |
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# define UNALIGNED_OK |
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# define UNALIGNED64_OK |
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# elif defined(__i386__) || defined(__i486__) || defined(__i586__) || \ |
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defined(__i686__) || defined(_X86_) || defined(_M_IX86) |
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# define UNALIGNED_OK |
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# elif defined(__aarch64__) || defined(_M_ARM64) || defined(_M_ARM64EC) |
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# if (defined(__GNUC__) && defined(__ARM_FEATURE_UNALIGNED)) || !defined(__GNUC__) |
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# define UNALIGNED_OK |
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# define UNALIGNED64_OK |
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# endif |
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# elif defined(__arm__) || (_M_ARM >= 7) |
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# if (defined(__GNUC__) && defined(__ARM_FEATURE_UNALIGNED)) || !defined(__GNUC__) |
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# define UNALIGNED_OK |
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# endif |
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# elif defined(__powerpc64__) || defined(__ppc64__) |
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# if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ |
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# define UNALIGNED_OK |
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# define UNALIGNED64_OK |
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# endif |
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# endif |
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#endif |
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#if defined(__has_feature) |
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# if __has_feature(memory_sanitizer) |
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# define Z_MEMORY_SANITIZER 1 |
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# include <sanitizer/msan_interface.h> |
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# endif |
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#endif |
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#ifndef Z_MEMORY_SANITIZER |
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# define __msan_unpoison(a, size) do { Z_UNUSED(a); Z_UNUSED(size); } while (0) |
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#endif |
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#endif
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