libmdbx
0.13.4.211 (2025-03-21T00:31:54+03:00)
One of the fastest compact embeddable key-value ACID storage engine without WAL.
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options.h
Go to the documentation of this file.
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/*******************************************************************************
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*******************************************************************************
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*
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* BUILD TIME
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*
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* #### ##### ##### # #### # # ####
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* # # # # # # # # ## # #
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* # # # # # # # # # # # ####
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* # # ##### # # # # # # # #
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* # # # # # # # # ## # #
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* #### # # # #### # # ####
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*
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*
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*/
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#pragma once
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#include "essentials.h"
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#define MDBX_OSX_WANNA_DURABILITY 0
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#define MDBX_OSX_WANNA_SPEED 1
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#ifndef MDBX_APPLE_SPEED_INSTEADOF_DURABILITY
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#define MDBX_APPLE_SPEED_INSTEADOF_DURABILITY MDBX_OSX_WANNA_DURABILITY
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#endif
/* MDBX_APPLE_SPEED_INSTEADOF_DURABILITY */
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#ifndef MDBX_ENV_CHECKPID
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#if defined(MADV_DONTFORK) || defined(_WIN32) || defined(_WIN64)
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/* PID check could be omitted:
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* - on Linux when madvise(MADV_DONTFORK) is available, i.e. after the fork()
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* mapped pages will not be available for child process.
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* - in Windows where fork() not available. */
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#define MDBX_ENV_CHECKPID 0
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#else
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#define MDBX_ENV_CHECKPID 1
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#endif
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#define MDBX_ENV_CHECKPID_CONFIG "AUTO=" MDBX_STRINGIFY(MDBX_ENV_CHECKPID)
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#elif !(MDBX_ENV_CHECKPID == 0 || MDBX_ENV_CHECKPID == 1)
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#error MDBX_ENV_CHECKPID must be defined as 0 or 1
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#else
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#define MDBX_ENV_CHECKPID_CONFIG MDBX_STRINGIFY(MDBX_ENV_CHECKPID)
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#endif
/* MDBX_ENV_CHECKPID */
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#ifndef MDBX_TXN_CHECKOWNER
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#define MDBX_TXN_CHECKOWNER 1
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#define MDBX_TXN_CHECKOWNER_CONFIG "AUTO=" MDBX_STRINGIFY(MDBX_TXN_CHECKOWNER)
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#elif !(MDBX_TXN_CHECKOWNER == 0 || MDBX_TXN_CHECKOWNER == 1)
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#error MDBX_TXN_CHECKOWNER must be defined as 0 or 1
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#else
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#define MDBX_TXN_CHECKOWNER_CONFIG MDBX_STRINGIFY(MDBX_TXN_CHECKOWNER)
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#endif
/* MDBX_TXN_CHECKOWNER */
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#ifndef MDBX_TRUST_RTC
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#if defined(__linux__) || defined(__gnu_linux__) || defined(__NetBSD__) || defined(__OpenBSD__)
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#define MDBX_TRUST_RTC 0
/* a lot of embedded systems have a fake RTC */
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#else
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#define MDBX_TRUST_RTC 1
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#endif
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#define MDBX_TRUST_RTC_CONFIG "AUTO=" MDBX_STRINGIFY(MDBX_TRUST_RTC)
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#elif !(MDBX_TRUST_RTC == 0 || MDBX_TRUST_RTC == 1)
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#error MDBX_TRUST_RTC must be defined as 0 or 1
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#else
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#define MDBX_TRUST_RTC_CONFIG MDBX_STRINGIFY(MDBX_TRUST_RTC)
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#endif
/* MDBX_TRUST_RTC */
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#ifndef MDBX_ENABLE_REFUND
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#define MDBX_ENABLE_REFUND 1
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#elif !(MDBX_ENABLE_REFUND == 0 || MDBX_ENABLE_REFUND == 1)
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#error MDBX_ENABLE_REFUND must be defined as 0 or 1
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#endif
/* MDBX_ENABLE_REFUND */
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#ifndef MDBX_ENABLE_PROFGC
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#define MDBX_ENABLE_PROFGC 0
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#elif !(MDBX_ENABLE_PROFGC == 0 || MDBX_ENABLE_PROFGC == 1)
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#error MDBX_ENABLE_PROFGC must be defined as 0 or 1
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#endif
/* MDBX_ENABLE_PROFGC */
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#ifndef MDBX_ENABLE_PGOP_STAT
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#define MDBX_ENABLE_PGOP_STAT 1
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#elif !(MDBX_ENABLE_PGOP_STAT == 0 || MDBX_ENABLE_PGOP_STAT == 1)
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#error MDBX_ENABLE_PGOP_STAT must be defined as 0 or 1
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#endif
/* MDBX_ENABLE_PGOP_STAT */
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#ifndef MDBX_USE_MINCORE
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#if defined(MINCORE_INCORE) || !(defined(_WIN32) || defined(_WIN64))
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#define MDBX_USE_MINCORE 1
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#else
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#define MDBX_USE_MINCORE 0
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#endif
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#define MDBX_USE_MINCORE_CONFIG "AUTO=" MDBX_STRINGIFY(MDBX_USE_MINCORE)
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#elif !(MDBX_USE_MINCORE == 0 || MDBX_USE_MINCORE == 1)
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#error MDBX_USE_MINCORE must be defined as 0 or 1
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#endif
/* MDBX_USE_MINCORE */
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#ifndef MDBX_ENABLE_BIGFOOT
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#define MDBX_ENABLE_BIGFOOT 1
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#elif !(MDBX_ENABLE_BIGFOOT == 0 || MDBX_ENABLE_BIGFOOT == 1)
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#error MDBX_ENABLE_BIGFOOT must be defined as 0 or 1
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#endif
/* MDBX_ENABLE_BIGFOOT */
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#ifndef MDBX_DISABLE_VALIDATION
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#define MDBX_DISABLE_VALIDATION 0
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#elif !(MDBX_DISABLE_VALIDATION == 0 || MDBX_DISABLE_VALIDATION == 1)
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#error MDBX_DISABLE_VALIDATION must be defined as 0 or 1
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#endif
/* MDBX_DISABLE_VALIDATION */
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#ifndef MDBX_PNL_PREALLOC_FOR_RADIXSORT
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#define MDBX_PNL_PREALLOC_FOR_RADIXSORT 1
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#elif !(MDBX_PNL_PREALLOC_FOR_RADIXSORT == 0 || MDBX_PNL_PREALLOC_FOR_RADIXSORT == 1)
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#error MDBX_PNL_PREALLOC_FOR_RADIXSORT must be defined as 0 or 1
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#endif
/* MDBX_PNL_PREALLOC_FOR_RADIXSORT */
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#ifndef MDBX_DPL_PREALLOC_FOR_RADIXSORT
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#define MDBX_DPL_PREALLOC_FOR_RADIXSORT 1
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#elif !(MDBX_DPL_PREALLOC_FOR_RADIXSORT == 0 || MDBX_DPL_PREALLOC_FOR_RADIXSORT == 1)
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#error MDBX_DPL_PREALLOC_FOR_RADIXSORT must be defined as 0 or 1
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#endif
/* MDBX_DPL_PREALLOC_FOR_RADIXSORT */
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#ifndef MDBX_AVOID_MSYNC
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#if defined(_WIN32) || defined(_WIN64)
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#define MDBX_AVOID_MSYNC 1
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#else
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#define MDBX_AVOID_MSYNC 0
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#endif
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#elif !(MDBX_AVOID_MSYNC == 0 || MDBX_AVOID_MSYNC == 1)
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#error MDBX_AVOID_MSYNC must be defined as 0 or 1
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#endif
/* MDBX_AVOID_MSYNC */
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#ifndef MDBX_ENABLE_DBI_SPARSE
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#define MDBX_ENABLE_DBI_SPARSE 1
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#elif !(MDBX_ENABLE_DBI_SPARSE == 0 || MDBX_ENABLE_DBI_SPARSE == 1)
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#error MDBX_ENABLE_DBI_SPARSE must be defined as 0 or 1
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#endif
/* MDBX_ENABLE_DBI_SPARSE */
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#ifndef MDBX_ENABLE_DBI_LOCKFREE
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#define MDBX_ENABLE_DBI_LOCKFREE 1
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#elif !(MDBX_ENABLE_DBI_LOCKFREE == 0 || MDBX_ENABLE_DBI_LOCKFREE == 1)
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#error MDBX_ENABLE_DBI_LOCKFREE must be defined as 0 or 1
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#endif
/* MDBX_ENABLE_DBI_LOCKFREE */
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#ifndef MDBX_PNL_ASCENDING
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#define MDBX_PNL_ASCENDING 0
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#elif !(MDBX_PNL_ASCENDING == 0 || MDBX_PNL_ASCENDING == 1)
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#error MDBX_PNL_ASCENDING must be defined as 0 or 1
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#endif
/* MDBX_PNL_ASCENDING */
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#ifndef MDBX_WITHOUT_MSVC_CRT
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#if defined(MDBX_BUILD_CXX) && !MDBX_BUILD_CXX
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#define MDBX_WITHOUT_MSVC_CRT 1
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#else
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#define MDBX_WITHOUT_MSVC_CRT 0
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#endif
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#elif !(MDBX_WITHOUT_MSVC_CRT == 0 || MDBX_WITHOUT_MSVC_CRT == 1)
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#error MDBX_WITHOUT_MSVC_CRT must be defined as 0 or 1
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#endif
/* MDBX_WITHOUT_MSVC_CRT */
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#ifndef MDBX_ENVCOPY_WRITEBUF
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#define MDBX_ENVCOPY_WRITEBUF 1048576u
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#elif MDBX_ENVCOPY_WRITEBUF < 65536u || MDBX_ENVCOPY_WRITEBUF > 1073741824u || MDBX_ENVCOPY_WRITEBUF % 65536u
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#error MDBX_ENVCOPY_WRITEBUF must be defined in range 65536..1073741824 and be multiple of 65536
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#endif
/* MDBX_ENVCOPY_WRITEBUF */
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#ifndef MDBX_FORCE_ASSERTIONS
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#define MDBX_FORCE_ASSERTIONS 0
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#elif !(MDBX_FORCE_ASSERTIONS == 0 || MDBX_FORCE_ASSERTIONS == 1)
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#error MDBX_FORCE_ASSERTIONS must be defined as 0 or 1
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#endif
/* MDBX_FORCE_ASSERTIONS */
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#ifndef MDBX_ASSUME_MALLOC_OVERHEAD
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#ifdef __SIZEOF_POINTER__
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#define MDBX_ASSUME_MALLOC_OVERHEAD (__SIZEOF_POINTER__ * 2u)
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#else
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#define MDBX_ASSUME_MALLOC_OVERHEAD (sizeof(void *) * 2u)
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#endif
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#elif MDBX_ASSUME_MALLOC_OVERHEAD < 0 || MDBX_ASSUME_MALLOC_OVERHEAD > 64 || MDBX_ASSUME_MALLOC_OVERHEAD % 4
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#error MDBX_ASSUME_MALLOC_OVERHEAD must be defined in range 0..64 and be multiple of 4
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#endif
/* MDBX_ASSUME_MALLOC_OVERHEAD */
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#ifndef ENABLE_MEMCHECK
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#endif
/* ENABLE_MEMCHECK */
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#ifndef MDBX_HAVE_C11ATOMICS
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#endif
/* MDBX_HAVE_C11ATOMICS */
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#ifndef MDBX_HAVE_BUILTIN_CPU_SUPPORTS
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#if defined(__APPLE__) || defined(BIONIC)
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/* Never use any modern features on Apple's or Google's OSes
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* since a lot of troubles with compatibility and/or performance */
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#define MDBX_HAVE_BUILTIN_CPU_SUPPORTS 0
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#elif defined(__e2k__)
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#define MDBX_HAVE_BUILTIN_CPU_SUPPORTS 0
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#elif __has_builtin(__builtin_cpu_supports) || defined(__BUILTIN_CPU_SUPPORTS__) || \
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(defined(__ia32__) && __GNUC_PREREQ(4, 8) && __GLIBC_PREREQ(2, 23))
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#define MDBX_HAVE_BUILTIN_CPU_SUPPORTS 1
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#else
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#define MDBX_HAVE_BUILTIN_CPU_SUPPORTS 0
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#endif
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#elif !(MDBX_HAVE_BUILTIN_CPU_SUPPORTS == 0 || MDBX_HAVE_BUILTIN_CPU_SUPPORTS == 1)
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#error MDBX_HAVE_BUILTIN_CPU_SUPPORTS must be defined as 0 or 1
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#endif
/* MDBX_HAVE_BUILTIN_CPU_SUPPORTS */
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#ifndef MDBX_NOSUCCESS_PURE_COMMIT
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#define MDBX_NOSUCCESS_PURE_COMMIT 0
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#elif !(MDBX_NOSUCCESS_PURE_COMMIT == 0 || MDBX_NOSUCCESS_PURE_COMMIT == 1)
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#error MDBX_NOSUCCESS_PURE_COMMIT must be defined as 0 or 1
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#endif
/* MDBX_NOSUCCESS_PURE_COMMIT */
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#ifndef MDBX_ENABLE_NON_READONLY_EXPORT
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#define MDBX_ENABLE_NON_READONLY_EXPORT 0
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#elif !(MDBX_ENABLE_NON_READONLY_EXPORT == 0 || MDBX_ENABLE_NON_READONLY_EXPORT == 1)
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#error MDBX_ENABLE_NON_READONLY_EXPORT must be defined as 0 or 1
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#endif
/* MDBX_ENABLE_NON_READONLY_EXPORT */
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//------------------------------------------------------------------------------
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#define MDBX_LOCKING_WIN32FILES -1
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#define MDBX_LOCKING_SYSV 5
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#define MDBX_LOCKING_POSIX1988 1988
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#define MDBX_LOCKING_POSIX2001 2001
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#define MDBX_LOCKING_POSIX2008 2008
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#if defined(_WIN32) || defined(_WIN64)
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#define MDBX_LOCKING MDBX_LOCKING_WIN32FILES
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#else
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#ifndef MDBX_LOCKING
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#if defined(_POSIX_THREAD_PROCESS_SHARED) && _POSIX_THREAD_PROCESS_SHARED >= 200112L && !defined(__FreeBSD__)
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/* Some platforms define the EOWNERDEAD error code even though they
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* don't support Robust Mutexes. If doubt compile with -MDBX_LOCKING=2001. */
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#if defined(EOWNERDEAD) && _POSIX_THREAD_PROCESS_SHARED >= 200809L && \
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((defined(_POSIX_THREAD_ROBUST_PRIO_INHERIT) && _POSIX_THREAD_ROBUST_PRIO_INHERIT > 0) || \
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(defined(_POSIX_THREAD_ROBUST_PRIO_PROTECT) && _POSIX_THREAD_ROBUST_PRIO_PROTECT > 0) || \
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defined(PTHREAD_MUTEX_ROBUST) || defined(PTHREAD_MUTEX_ROBUST_NP)) && \
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(!defined(__GLIBC__) || __GLIBC_PREREQ(2, 10)
/* troubles with Robust mutexes before 2.10 */
)
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#define MDBX_LOCKING MDBX_LOCKING_POSIX2008
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#else
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#define MDBX_LOCKING MDBX_LOCKING_POSIX2001
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#endif
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#elif defined(__sun) || defined(__SVR4) || defined(__svr4__)
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#define MDBX_LOCKING MDBX_LOCKING_POSIX1988
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#else
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#define MDBX_LOCKING MDBX_LOCKING_SYSV
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#endif
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#define MDBX_LOCKING_CONFIG "AUTO=" MDBX_STRINGIFY(MDBX_LOCKING)
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#else
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#define MDBX_LOCKING_CONFIG MDBX_STRINGIFY(MDBX_LOCKING)
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#endif
/* MDBX_LOCKING */
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#endif
/* !Windows */
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#ifndef MDBX_USE_OFDLOCKS
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#if ((defined(F_OFD_SETLK) && defined(F_OFD_SETLKW) && defined(F_OFD_GETLK)) || \
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(defined(F_OFD_SETLK64) && defined(F_OFD_SETLKW64) && defined(F_OFD_GETLK64))) && \
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!defined(MDBX_SAFE4QEMU) && !defined(__sun)
/* OFD-lock are broken on Solaris */
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#define MDBX_USE_OFDLOCKS 1
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#else
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#define MDBX_USE_OFDLOCKS 0
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#endif
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#define MDBX_USE_OFDLOCKS_CONFIG "AUTO=" MDBX_STRINGIFY(MDBX_USE_OFDLOCKS)
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#elif !(MDBX_USE_OFDLOCKS == 0 || MDBX_USE_OFDLOCKS == 1)
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#error MDBX_USE_OFDLOCKS must be defined as 0 or 1
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#else
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#define MDBX_USE_OFDLOCKS_CONFIG MDBX_STRINGIFY(MDBX_USE_OFDLOCKS)
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#endif
/* MDBX_USE_OFDLOCKS */
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#ifndef MDBX_USE_SENDFILE
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#if ((defined(__linux__) || defined(__gnu_linux__)) && !defined(__ANDROID_API__)) || \
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(defined(__ANDROID_API__) && __ANDROID_API__ >= 21)
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#define MDBX_USE_SENDFILE 1
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#else
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#define MDBX_USE_SENDFILE 0
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#endif
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#elif !(MDBX_USE_SENDFILE == 0 || MDBX_USE_SENDFILE == 1)
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#error MDBX_USE_SENDFILE must be defined as 0 or 1
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#endif
/* MDBX_USE_SENDFILE */
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#ifndef MDBX_USE_COPYFILERANGE
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#if __GLIBC_PREREQ(2, 27) && defined(_GNU_SOURCE)
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#define MDBX_USE_COPYFILERANGE 1
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#else
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#define MDBX_USE_COPYFILERANGE 0
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#endif
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#elif !(MDBX_USE_COPYFILERANGE == 0 || MDBX_USE_COPYFILERANGE == 1)
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#error MDBX_USE_COPYFILERANGE must be defined as 0 or 1
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#endif
/* MDBX_USE_COPYFILERANGE */
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//------------------------------------------------------------------------------
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#ifndef MDBX_CPU_WRITEBACK_INCOHERENT
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#if defined(__ia32__) || defined(__e2k__) || defined(__hppa) || defined(__hppa__) || defined(DOXYGEN)
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#define MDBX_CPU_WRITEBACK_INCOHERENT 0
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#else
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#define MDBX_CPU_WRITEBACK_INCOHERENT 1
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#endif
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#elif !(MDBX_CPU_WRITEBACK_INCOHERENT == 0 || MDBX_CPU_WRITEBACK_INCOHERENT == 1)
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#error MDBX_CPU_WRITEBACK_INCOHERENT must be defined as 0 or 1
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#endif
/* MDBX_CPU_WRITEBACK_INCOHERENT */
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#ifndef MDBX_MMAP_INCOHERENT_FILE_WRITE
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#ifdef __OpenBSD__
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#define MDBX_MMAP_INCOHERENT_FILE_WRITE 1
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#else
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#define MDBX_MMAP_INCOHERENT_FILE_WRITE 0
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#endif
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#elif !(MDBX_MMAP_INCOHERENT_FILE_WRITE == 0 || MDBX_MMAP_INCOHERENT_FILE_WRITE == 1)
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#error MDBX_MMAP_INCOHERENT_FILE_WRITE must be defined as 0 or 1
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#endif
/* MDBX_MMAP_INCOHERENT_FILE_WRITE */
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#ifndef MDBX_MMAP_INCOHERENT_CPU_CACHE
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#if defined(__mips) || defined(__mips__) || defined(__mips64) || defined(__mips64__) || defined(_M_MRX000) || \
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defined(_MIPS_) || defined(__MWERKS__) || defined(__sgi)
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/* MIPS has cache coherency issues. */
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#define MDBX_MMAP_INCOHERENT_CPU_CACHE 1
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#else
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/* LY: assume no relevant mmap/dcache issues. */
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#define MDBX_MMAP_INCOHERENT_CPU_CACHE 0
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#endif
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#elif !(MDBX_MMAP_INCOHERENT_CPU_CACHE == 0 || MDBX_MMAP_INCOHERENT_CPU_CACHE == 1)
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#error MDBX_MMAP_INCOHERENT_CPU_CACHE must be defined as 0 or 1
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#endif
/* MDBX_MMAP_INCOHERENT_CPU_CACHE */
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#ifndef MDBX_MMAP_NEEDS_JOLT
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#if MDBX_MMAP_INCOHERENT_FILE_WRITE || MDBX_MMAP_INCOHERENT_CPU_CACHE || !(defined(__linux__) || defined(__gnu_linux__))
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#define MDBX_MMAP_NEEDS_JOLT 1
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#else
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#define MDBX_MMAP_NEEDS_JOLT 0
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#endif
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#define MDBX_MMAP_NEEDS_JOLT_CONFIG "AUTO=" MDBX_STRINGIFY(MDBX_MMAP_NEEDS_JOLT)
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#elif !(MDBX_MMAP_NEEDS_JOLT == 0 || MDBX_MMAP_NEEDS_JOLT == 1)
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#error MDBX_MMAP_NEEDS_JOLT must be defined as 0 or 1
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#endif
/* MDBX_MMAP_NEEDS_JOLT */
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#ifndef MDBX_64BIT_ATOMIC
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#if MDBX_WORDBITS >= 64 || defined(DOXYGEN)
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#define MDBX_64BIT_ATOMIC 1
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#else
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#define MDBX_64BIT_ATOMIC 0
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#endif
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#define MDBX_64BIT_ATOMIC_CONFIG "AUTO=" MDBX_STRINGIFY(MDBX_64BIT_ATOMIC)
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#elif !(MDBX_64BIT_ATOMIC == 0 || MDBX_64BIT_ATOMIC == 1)
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#error MDBX_64BIT_ATOMIC must be defined as 0 or 1
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#else
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#define MDBX_64BIT_ATOMIC_CONFIG MDBX_STRINGIFY(MDBX_64BIT_ATOMIC)
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#endif
/* MDBX_64BIT_ATOMIC */
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#ifndef MDBX_64BIT_CAS
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#if defined(__GCC_ATOMIC_LLONG_LOCK_FREE)
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#if __GCC_ATOMIC_LLONG_LOCK_FREE > 1
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#define MDBX_64BIT_CAS 1
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#else
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#define MDBX_64BIT_CAS 0
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#endif
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#elif defined(__CLANG_ATOMIC_LLONG_LOCK_FREE)
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#if __CLANG_ATOMIC_LLONG_LOCK_FREE > 1
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#define MDBX_64BIT_CAS 1
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#else
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#define MDBX_64BIT_CAS 0
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#endif
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#elif defined(ATOMIC_LLONG_LOCK_FREE)
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#if ATOMIC_LLONG_LOCK_FREE > 1
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#define MDBX_64BIT_CAS 1
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#else
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#define MDBX_64BIT_CAS 0
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#endif
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#elif defined(_MSC_VER) || defined(__APPLE__) || defined(DOXYGEN)
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#define MDBX_64BIT_CAS 1
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#elif !(MDBX_64BIT_CAS == 0 || MDBX_64BIT_CAS == 1)
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#error MDBX_64BIT_CAS must be defined as 0 or 1
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#else
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#define MDBX_64BIT_CAS MDBX_64BIT_ATOMIC
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#endif
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#define MDBX_64BIT_CAS_CONFIG "AUTO=" MDBX_STRINGIFY(MDBX_64BIT_CAS)
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#else
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#define MDBX_64BIT_CAS_CONFIG MDBX_STRINGIFY(MDBX_64BIT_CAS)
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#endif
/* MDBX_64BIT_CAS */
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#ifndef MDBX_UNALIGNED_OK
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#if defined(__ALIGNED__) || defined(__SANITIZE_UNDEFINED__) || defined(ENABLE_UBSAN)
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#define MDBX_UNALIGNED_OK 0
/* no unaligned access allowed */
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#elif defined(__ARM_FEATURE_UNALIGNED)
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#define MDBX_UNALIGNED_OK 4
/* ok unaligned for 32-bit words */
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#elif defined(__e2k__) || defined(__elbrus__)
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#if __iset__ > 4
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#define MDBX_UNALIGNED_OK 8
/* ok unaligned for 64-bit words */
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#else
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#define MDBX_UNALIGNED_OK 4
/* ok unaligned for 32-bit words */
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#endif
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#elif defined(__ia32__)
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#define MDBX_UNALIGNED_OK 8
/* ok unaligned for 64-bit words */
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#elif __CLANG_PREREQ(5, 0) || __GNUC_PREREQ(5, 0)
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/* expecting an optimization will well done, also this
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* hushes false-positives from UBSAN (undefined behaviour sanitizer) */
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#define MDBX_UNALIGNED_OK 0
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#else
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#define MDBX_UNALIGNED_OK 0
/* no unaligned access allowed */
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#endif
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#elif MDBX_UNALIGNED_OK == 1
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#undef MDBX_UNALIGNED_OK
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#define MDBX_UNALIGNED_OK 32
/* any unaligned access allowed */
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#endif
/* MDBX_UNALIGNED_OK */
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#ifndef MDBX_CACHELINE_SIZE
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#if defined(SYSTEM_CACHE_ALIGNMENT_SIZE)
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#define MDBX_CACHELINE_SIZE SYSTEM_CACHE_ALIGNMENT_SIZE
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#elif defined(__ia64__) || defined(__ia64) || defined(_M_IA64)
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#define MDBX_CACHELINE_SIZE 128
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#else
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#define MDBX_CACHELINE_SIZE 64
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#endif
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#endif
/* MDBX_CACHELINE_SIZE */
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/* Max length of iov-vector passed to writev() call, used for auxilary writes */
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#ifndef MDBX_AUXILARY_IOV_MAX
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#define MDBX_AUXILARY_IOV_MAX 64
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#endif
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#if defined(IOV_MAX) && IOV_MAX < MDBX_AUXILARY_IOV_MAX
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#undef MDBX_AUXILARY_IOV_MAX
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#define MDBX_AUXILARY_IOV_MAX IOV_MAX
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#endif
/* MDBX_AUXILARY_IOV_MAX */
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/* An extra/custom information provided during library build */
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#ifndef MDBX_BUILD_METADATA
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#define MDBX_BUILD_METADATA ""
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#endif
/* MDBX_BUILD_METADATA */
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/*******************************************************************************
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*******************************************************************************
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******************************************************************************/
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#ifndef DOXYGEN
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/* In case the MDBX_DEBUG is undefined set it corresponding to NDEBUG */
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#ifndef MDBX_DEBUG
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#ifdef NDEBUG
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#define MDBX_DEBUG 0
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#else
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#define MDBX_DEBUG 1
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#endif
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#endif
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#if MDBX_DEBUG < 0 || MDBX_DEBUG > 2
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#error "The MDBX_DEBUG must be defined to 0, 1 or 2"
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#endif
/* MDBX_DEBUG */
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#else
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/* !!! Actually this is a fake definitions for Doxygen !!! */
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#define MDBX_DEBUG 0...2
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#define MDBX_DISABLE_GNU_SOURCE 0 or 1
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#endif
/* DOXYGEN */
options.h
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