diff --git a/GNUmakefile b/GNUmakefile
index 5f8b7071..6dff9346 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -231,6 +231,7 @@ dist/@tmp-shared_internals.inc: src/elements/version.c $(ALLOY_DEPS) $(lastword
 		-e 's|#include "../../mdbx.h"|@INCLUDE "mdbx.h"|' \
 		-e '/#include "defs.h"/r src/elements/defs.h' \
 		-e '/#include "osal.h"/r src/elements/osal.h' \
+		-e '/#include "options.h"/r src/elements/options.h' \
 		src/elements/internals.h > $@
 
 dist/mdbx.c: dist/@tmp-shared_internals.inc $(lastword $(MAKEFILE_LIST))
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 7018135c..d5b55848 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -25,7 +25,7 @@ else()
     set(LIBMDBX_OSAL posix)
   endif()
   set(LIBMDBX_SOURCES
-    elements/defs.h elements/internals.h elements/osal.h
+    elements/options.h elements/defs.h elements/internals.h elements/osal.h
     elements/core.c elements/osal.c elements/lck-${LIBMDBX_OSAL}.c)
 endif()
 list(APPEND LIBMDBX_SOURCES ../mdbx.h
diff --git a/src/elements/internals.h b/src/elements/internals.h
index 0289cb5c..e1fdc5c1 100644
--- a/src/elements/internals.h
+++ b/src/elements/internals.h
@@ -33,12 +33,6 @@
 #   undef NDEBUG
 #endif
 
-#define MDBX_OSX_WANNA_DURABILITY 0 /* using fcntl(F_FULLFSYNC) with 5-10 times slowdown */
-#define MDBX_OSX_WANNA_SPEED 1      /* using fsync() with chance of data lost on power failure */
-#ifndef MDBX_OSX_SPEED_INSTEADOF_DURABILITY
-#   define MDBX_OSX_SPEED_INSTEADOF_DURABILITY MDBX_OSX_WANNA_DURABILITY
-#endif
-
 #ifdef MDBX_ALLOY
 /* Amalgamated build */
 #   define MDBX_INTERNAL_FUNC static
@@ -152,41 +146,43 @@
 #   endif
 #endif /* -Walignment-reduction-ignored */
 
-#include "osal.h"
-
 /* *INDENT-ON* */
 /* clang-format on */
 
-/* Controls checking PID against reuse DB environment after the fork() */
-#ifndef MDBX_TXN_CHECKPID
-#if defined(MADV_DONTFORK) || defined(_WIN32) || defined(_WIN64)
-/* PID check could be ommited:
- *  - on Linux when madvise(MADV_DONTFORK) is available. i.e. after the fork()
- *    mapped pages will not be available for child process.
- *  - in Windows where fork() not available. */
-#define MDBX_TXN_CHECKPID 0
-#else
-#define MDBX_TXN_CHECKPID 1
-#endif
-#define MDBX_TXN_CHECKPID_CONFIG "AUTO=" STRINGIFY(MDBX_TXN_CHECKPID)
-#else
-#define MDBX_TXN_CHECKPID_CONFIG STRINGIFY(MDBX_TXN_CHECKPID)
-#endif /* MDBX_TXN_CHECKPID */
-
-/* Controls checking transaction owner thread against misuse transactions from
- * other threads. */
-#ifndef MDBX_TXN_CHECKOWNER
-#define MDBX_TXN_CHECKOWNER 1
-#define MDBX_TXN_CHECKOWNER_CONFIG "AUTO=" STRINGIFY(MDBX_TXN_CHECKOWNER)
-#else
-#define MDBX_TXN_CHECKOWNER_CONFIG STRINGIFY(MDBX_TXN_CHECKOWNER)
-#endif /* MDBX_TXN_CHECKOWNER */
+#include "osal.h"
 
 #define mdbx_sourcery_anchor XCONCAT(mdbx_sourcery_, MDBX_BUILD_SOURCERY)
 #if defined(MDBX_TOOLS)
 extern LIBMDBX_API const char *const mdbx_sourcery_anchor;
 #endif
 
+#include "options.h"
+
+/*----------------------------------------------------------------------------*/
+/* Cache coherence and invalidation */
+
+#if MDBX_CPU_WRITEBACK_IS_COHERENT
+#define mdbx_flush_noncoherent_cpu_writeback() mdbx_compiler_barrier()
+#else
+#define mdbx_flush_noncoherent_cpu_writeback() mdbx_memory_barrier()
+#endif
+
+static __maybe_unused __inline void
+mdbx_invalidate_mmap_noncoherent_cache(void *addr, size_t nbytes) {
+#if MDBX_CPU_CACHE_MMAP_NONCOHERENT
+#ifdef DCACHE
+  /* MIPS has cache coherency issues.
+   * Note: for any nbytes >= on-chip cache size, entire is flushed. */
+  cacheflush(addr, nbytes, DCACHE);
+#else
+#error "Oops, cacheflush() not available"
+#endif /* DCACHE */
+#else  /* MDBX_CPU_CACHE_MMAP_NONCOHERENT */
+  (void)addr;
+  (void)nbytes;
+#endif /* MDBX_CPU_CACHE_MMAP_NONCOHERENT */
+}
+
 /*----------------------------------------------------------------------------*/
 /* Basic constants and types */
 
@@ -1246,7 +1242,7 @@ typedef struct MDBX_node {
       uint16_t mn_hi, mn_lo; /* part of data size or pgno */
     };
   };
-#endif
+#endif /* __BYTE_ORDER__ */
 
   /* mdbx_node Flags */
 #define F_BIGDATA 0x01 /* data put on overflow page */
diff --git a/src/elements/options.h b/src/elements/options.h
new file mode 100644
index 00000000..a1d4eef4
--- /dev/null
+++ b/src/elements/options.h
@@ -0,0 +1,203 @@
+/*******************************************************************************
+ *******************************************************************************
+ *******************************************************************************
+ *
+ *
+ *         ####   #####    #####     #     ####   #    #   ####
+ *        #    #  #    #     #       #    #    #  ##   #  #
+ *        #    #  #    #     #       #    #    #  # #  #   ####
+ *        #    #  #####      #       #    #    #  #  # #       #
+ *        #    #  #          #       #    #    #  #   ##  #    #
+ *         ####   #          #       #     ####   #    #   ####
+ *
+ *
+ */
+
+/* using fcntl(F_FULLFSYNC) with 5-10 times slowdown */
+#define MDBX_OSX_WANNA_DURABILITY 0
+/* using fsync() with chance of data lost on power failure */
+#define MDBX_OSX_WANNA_SPEED 1
+
+#ifndef MDBX_OSX_SPEED_INSTEADOF_DURABILITY
+#define MDBX_OSX_SPEED_INSTEADOF_DURABILITY MDBX_OSX_WANNA_DURABILITY
+#endif /* MDBX_OSX_SPEED_INSTEADOF_DURABILITY */
+
+/* Controls checking PID against reuse DB environment after the fork() */
+#ifndef MDBX_TXN_CHECKPID
+#if defined(MADV_DONTFORK) || defined(_WIN32) || defined(_WIN64)
+/* PID check could be ommited:
+ *  - on Linux when madvise(MADV_DONTFORK) is available. i.e. after the fork()
+ *    mapped pages will not be available for child process.
+ *  - in Windows where fork() not available. */
+#define MDBX_TXN_CHECKPID 0
+#else
+#define MDBX_TXN_CHECKPID 1
+#endif
+#define MDBX_TXN_CHECKPID_CONFIG "AUTO=" STRINGIFY(MDBX_TXN_CHECKPID)
+#else
+#define MDBX_TXN_CHECKPID_CONFIG STRINGIFY(MDBX_TXN_CHECKPID)
+#endif /* MDBX_TXN_CHECKPID */
+
+/* Controls checking transaction owner thread against misuse transactions from
+ * other threads. */
+#ifndef MDBX_TXN_CHECKOWNER
+#define MDBX_TXN_CHECKOWNER 1
+#define MDBX_TXN_CHECKOWNER_CONFIG "AUTO=" STRINGIFY(MDBX_TXN_CHECKOWNER)
+#else
+#define MDBX_TXN_CHECKOWNER_CONFIG STRINGIFY(MDBX_TXN_CHECKOWNER)
+#endif /* MDBX_TXN_CHECKOWNER */
+
+/* Does a system have battery-backed Real-Time Clock or just a fake. */
+#ifndef MDBX_TRUST_RTC
+#if defined(__linux__) || defined(__gnu_linux__) || defined(__NetBSD__) ||     \
+    defined(__OpenBSD__)
+#define MDBX_TRUST_RTC 0 /* a lot of embedded systems have a fake RTC */
+#else
+#define MDBX_TRUST_RTC 1
+#endif
+#define MDBX_TRUST_RTC_CONFIG "AUTO=" STRINGIFY(MDBX_TRUST_RTC)
+#else
+#define MDBX_TRUST_RTC_CONFIG STRINGIFY(MDBX_TRUST_RTC)
+#endif /* MDBX_TRUST_RTC */
+
+//------------------------------------------------------------------------------
+
+#define MDBX_LOCKING_WIN32FILES -1  /* Win32 File Locking API */
+#define MDBX_LOCKING_SYSV 5         /* SystemV IPC semaphores */
+#define MDBX_LOCKING_POSIX1988 1988 /* POSIX-1 Shared anonymous semaphores */
+#define MDBX_LOCKING_POSIX2001 2001 /* POSIX-2001 Shared Mutexes */
+#define MDBX_LOCKING_POSIX2008 2008 /* POSIX-2008 Robust Mutexes */
+#define MDBX_LOCKING_BENAPHORE 1995 /* BeOS Benaphores, aka Futexes */
+
+#if defined(_WIN32) || defined(_WIN64)
+#define MDBX_LOCKING MDBX_LOCKING_WIN32FILES
+#else
+#ifndef MDBX_LOCKING
+#if defined(_POSIX_THREAD_PROCESS_SHARED) &&                                   \
+    _POSIX_THREAD_PROCESS_SHARED >= 200112L && !defined(__FreeBSD__)
+
+/* Some platforms define the EOWNERDEAD error code even though they
+ * don't support Robust Mutexes. If doubt compile with -MDBX_LOCKING=2001. */
+#if defined(EOWNERDEAD) && _POSIX_THREAD_PROCESS_SHARED >= 200809L &&          \
+    (defined(_POSIX_THREAD_ROBUST_PRIO_INHERIT) ||                             \
+     defined(_POSIX_THREAD_ROBUST_PRIO_PROTECT) ||                             \
+     defined(PTHREAD_MUTEX_ROBUST) || defined(PTHREAD_MUTEX_ROBUST_NP)) &&     \
+    (!defined(__GLIBC__) ||                                                    \
+     __GLIBC_PREREQ(2, 10) /* troubles with Robust mutexes before 2.10 */)
+#define MDBX_LOCKING MDBX_LOCKING_POSIX2008
+#else
+#define MDBX_LOCKING MDBX_LOCKING_POSIX2001
+#endif
+#elif defined(__sun) || defined(__SVR4) || defined(__svr4__)
+#define MDBX_LOCKING MDBX_LOCKING_POSIX1988
+#else
+#define MDBX_LOCKING MDBX_LOCKING_SYSV
+#endif
+#define MDBX_LOCKING_CONFIG "AUTO=" STRINGIFY(MDBX_LOCKING)
+#else
+#define MDBX_LOCKING_CONFIG STRINGIFY(MDBX_LOCKING)
+#endif /* MDBX_LOCKING */
+#endif /* !Windows */
+
+#ifndef MDBX_USE_OFDLOCKS
+#if defined(F_OFD_SETLK) && defined(F_OFD_SETLKW) && defined(F_OFD_GETLK) &&   \
+    !defined(MDBX_SAFE4QEMU) &&                                                \
+    !defined(__sun) /* OFD-lock are broken on Solaris */
+#define MDBX_USE_OFDLOCKS 1
+#else
+#define MDBX_USE_OFDLOCKS 0
+#endif
+#define MDBX_USE_OFDLOCKS_CONFIG "AUTO=" STRINGIFY(MDBX_USE_OFDLOCKS)
+#else
+#define MDBX_USE_OFDLOCKS_CONFIG STRINGIFY(MDBX_USE_OFDLOCKS)
+#endif /* MDBX_USE_OFDLOCKS */
+
+//------------------------------------------------------------------------------
+
+#ifndef MDBX_CPU_WRITEBACK_IS_COHERENT
+#if defined(__ia32__) || defined(__e2k__) || defined(__hppa) ||                \
+    defined(__hppa__)
+#define MDBX_CPU_WRITEBACK_IS_COHERENT 1
+#else
+#define MDBX_CPU_WRITEBACK_IS_COHERENT 0
+#endif
+#endif /* MDBX_CPU_WRITEBACK_IS_COHERENT */
+
+#ifndef MDBX_CPU_CACHE_MMAP_NONCOHERENT
+#if defined(__mips) || defined(__mips__) || defined(__mips64) ||               \
+    defined(__mips64__) || defined(_M_MRX000) || defined(_MIPS_) ||            \
+    defined(__MWERKS__) || defined(__sgi)
+/* MIPS has cache coherency issues. */
+#define MDBX_CPU_CACHE_MMAP_NONCOHERENT 1
+#else
+/* LY: assume no relevant mmap/dcache issues. */
+#define MDBX_CPU_CACHE_MMAP_NONCOHERENT 0
+#endif
+#endif /* MDBX_CPU_CACHE_MMAP_NONCOHERENT */
+
+#ifndef MDBX_64BIT_ATOMIC
+#if MDBX_WORDBITS >= 64
+#define MDBX_64BIT_ATOMIC 1
+#else
+#define MDBX_64BIT_ATOMIC 0
+#endif
+#define MDBX_64BIT_ATOMIC_CONFIG "AUTO=" STRINGIFY(MDBX_64BIT_ATOMIC)
+#else
+#define MDBX_64BIT_ATOMIC_CONFIG STRINGIFY(MDBX_64BIT_ATOMIC)
+#endif /* MDBX_64BIT_ATOMIC */
+
+#ifndef MDBX_64BIT_CAS
+#if defined(ATOMIC_LLONG_LOCK_FREE)
+#if ATOMIC_LLONG_LOCK_FREE > 1
+#define MDBX_64BIT_CAS 1
+#else
+#define MDBX_64BIT_CAS 0
+#endif
+#elif defined(__GCC_ATOMIC_LLONG_LOCK_FREE)
+#if __GCC_ATOMIC_LLONG_LOCK_FREE > 1
+#define MDBX_64BIT_CAS 1
+#else
+#define MDBX_64BIT_CAS 0
+#endif
+#elif defined(__CLANG_ATOMIC_LLONG_LOCK_FREE)
+#if __CLANG_ATOMIC_LLONG_LOCK_FREE > 1
+#define MDBX_64BIT_CAS 1
+#else
+#define MDBX_64BIT_CAS 0
+#endif
+#elif defined(_MSC_VER) || defined(__APPLE__)
+#define MDBX_64BIT_CAS 1
+#else
+#define MDBX_64BIT_CAS MDBX_64BIT_ATOMIC
+#endif
+#define MDBX_64BIT_CAS_CONFIG "AUTO=" STRINGIFY(MDBX_64BIT_CAS)
+#else
+#define MDBX_64BIT_CAS_CONFIG STRINGIFY(MDBX_64BIT_CAS)
+#endif /* MDBX_64BIT_CAS */
+
+#if !defined(MDBX_UNALIGNED_OK)
+#if defined(_MSC_VER)
+#define MDBX_UNALIGNED_OK 1 /* avoid MSVC misoptimization */
+#elif __CLANG_PREREQ(5, 0) || __GNUC_PREREQ(5, 0)
+#define MDBX_UNALIGNED_OK 0 /* expecting optimization is well done */
+#elif (defined(__ia32__) || defined(__ARM_FEATURE_UNALIGNED)) &&               \
+    !defined(__ALIGNED__)
+#define MDBX_UNALIGNED_OK 1
+#else
+#define MDBX_UNALIGNED_OK 0
+#endif
+#endif /* MDBX_UNALIGNED_OK */
+
+#ifndef MDBX_CACHELINE_SIZE
+#if defined(SYSTEM_CACHE_ALIGNMENT_SIZE)
+#define MDBX_CACHELINE_SIZE SYSTEM_CACHE_ALIGNMENT_SIZE
+#elif defined(__ia64__) || defined(__ia64) || defined(_M_IA64)
+#define MDBX_CACHELINE_SIZE 128
+#else
+#define MDBX_CACHELINE_SIZE 64
+#endif
+#endif /* MDBX_CACHELINE_SIZE */
+
+/*******************************************************************************
+ *******************************************************************************
+ ******************************************************************************/
diff --git a/src/elements/osal.h b/src/elements/osal.h
index 16dc65c9..64d887fe 100644
--- a/src/elements/osal.h
+++ b/src/elements/osal.h
@@ -274,24 +274,17 @@ typedef pthread_mutex_t mdbx_fastmutex_t;
 #endif /* __amd64__ */
 #endif /* all x86 */
 
-#if !defined(MDBX_UNALIGNED_OK)
-#if defined(_MSC_VER)
-#define MDBX_UNALIGNED_OK 1 /* avoid MSVC misoptimization */
-#elif __CLANG_PREREQ(5, 0) || __GNUC_PREREQ(5, 0)
-#define MDBX_UNALIGNED_OK 0 /* expecting optimization is well done */
-#elif (defined(__ia32__) || defined(__ARM_FEATURE_UNALIGNED)) &&               \
-    !defined(__ALIGNED__)
-#define MDBX_UNALIGNED_OK 1
-#else
-#define MDBX_UNALIGNED_OK 0
-#endif
-#endif /* MDBX_UNALIGNED_OK */
-
 #if (-6 & 5) || CHAR_BIT != 8 || UINT_MAX < 0xffffffff || ULONG_MAX % 0xFFFF
 #error                                                                         \
     "Sanity checking failed: Two's complement, reasonably sized integer types"
 #endif
 
+#if UINTPTR_MAX > 0xffffFFFFul || ULONG_MAX > 0xffffFFFFul
+#define MDBX_WORDBITS 64
+#else
+#define MDBX_WORDBITS 32
+#endif /* MDBX_WORDBITS */
+
 /*----------------------------------------------------------------------------*/
 /* Compiler's includes for builtins/intrinsics */
 
@@ -401,6 +394,15 @@ typedef pthread_mutex_t mdbx_fastmutex_t;
 /*----------------------------------------------------------------------------*/
 /* Memory/Compiler barriers, cache coherence */
 
+#if __has_include(<sys/cachectl.h>)
+#include <sys/cachectl.h>
+#elif defined(__mips) || defined(__mips__) || defined(__mips64) ||             \
+    defined(__mips64__) || defined(_M_MRX000) || defined(_MIPS_) ||            \
+    defined(__MWERKS__) || defined(__sgi)
+/* MIPS should have explicit cache control */
+#include <sys/cachectl.h>
+#endif
+
 static __maybe_unused __inline void mdbx_compiler_barrier(void) {
 #if defined(__clang__) || defined(__GNUC__)
   __asm__ __volatile__("" ::: "memory");
@@ -459,71 +461,6 @@ static __maybe_unused __inline void mdbx_memory_barrier(void) {
 #endif
 }
 
-/*----------------------------------------------------------------------------*/
-/* Cache coherence and invalidation */
-
-#ifndef MDBX_CPU_WRITEBACK_IS_COHERENT
-#if defined(__ia32__) || defined(__e2k__) || defined(__hppa) ||                \
-    defined(__hppa__)
-#define MDBX_CPU_WRITEBACK_IS_COHERENT 1
-#else
-#define MDBX_CPU_WRITEBACK_IS_COHERENT 0
-#endif
-#endif /* MDBX_CPU_WRITEBACK_IS_COHERENT */
-
-#ifndef MDBX_CACHELINE_SIZE
-#if defined(SYSTEM_CACHE_ALIGNMENT_SIZE)
-#define MDBX_CACHELINE_SIZE SYSTEM_CACHE_ALIGNMENT_SIZE
-#elif defined(__ia64__) || defined(__ia64) || defined(_M_IA64)
-#define MDBX_CACHELINE_SIZE 128
-#else
-#define MDBX_CACHELINE_SIZE 64
-#endif
-#endif /* MDBX_CACHELINE_SIZE */
-
-#if MDBX_CPU_WRITEBACK_IS_COHERENT
-#define mdbx_flush_noncoherent_cpu_writeback() mdbx_compiler_barrier()
-#else
-#define mdbx_flush_noncoherent_cpu_writeback() mdbx_memory_barrier()
-#endif
-
-#if __has_include(<sys/cachectl.h>)
-#include <sys/cachectl.h>
-#elif defined(__mips) || defined(__mips__) || defined(__mips64) ||             \
-    defined(__mips64__) || defined(_M_MRX000) || defined(_MIPS_) ||            \
-    defined(__MWERKS__) || defined(__sgi)
-/* MIPS should have explicit cache control */
-#include <sys/cachectl.h>
-#endif
-
-#ifndef MDBX_CPU_CACHE_MMAP_NONCOHERENT
-#if defined(__mips) || defined(__mips__) || defined(__mips64) ||               \
-    defined(__mips64__) || defined(_M_MRX000) || defined(_MIPS_) ||            \
-    defined(__MWERKS__) || defined(__sgi)
-/* MIPS has cache coherency issues. */
-#define MDBX_CPU_CACHE_MMAP_NONCOHERENT 1
-#else
-/* LY: assume no relevant mmap/dcache issues. */
-#define MDBX_CPU_CACHE_MMAP_NONCOHERENT 0
-#endif
-#endif /* ndef MDBX_CPU_CACHE_MMAP_NONCOHERENT */
-
-static __maybe_unused __inline void
-mdbx_invalidate_mmap_noncoherent_cache(void *addr, size_t nbytes) {
-#if MDBX_CPU_CACHE_MMAP_NONCOHERENT
-#ifdef DCACHE
-  /* MIPS has cache coherency issues.
-   * Note: for any nbytes >= on-chip cache size, entire is flushed. */
-  cacheflush(addr, nbytes, DCACHE);
-#else
-#error "Oops, cacheflush() not available"
-#endif /* DCACHE */
-#else  /* MDBX_CPU_CACHE_MMAP_NONCOHERENT */
-  (void)addr;
-  (void)nbytes;
-#endif /* MDBX_CPU_CACHE_MMAP_NONCOHERENT */
-}
-
 /*----------------------------------------------------------------------------*/
 /* libc compatibility stuff */
 
@@ -954,114 +891,3 @@ MDBX_INTERNAL_VAR MDBX_OfferVirtualMemory mdbx_OfferVirtualMemory;
 #ifdef _MSC_VER
 #pragma warning(pop)
 #endif
-
-/*----------------------------------------------------------------------------*/
-
-#if UINTPTR_MAX > 0xffffFFFFul || ULONG_MAX > 0xffffFFFFul
-#define MDBX_WORDBITS 64
-#else
-#define MDBX_WORDBITS 32
-#endif /* MDBX_WORDBITS */
-
-#ifndef MDBX_64BIT_ATOMIC
-#if MDBX_WORDBITS >= 64
-#define MDBX_64BIT_ATOMIC 1
-#else
-#define MDBX_64BIT_ATOMIC 0
-#endif
-#define MDBX_64BIT_ATOMIC_CONFIG "AUTO=" STRINGIFY(MDBX_64BIT_ATOMIC)
-#else
-#define MDBX_64BIT_ATOMIC_CONFIG STRINGIFY(MDBX_64BIT_ATOMIC)
-#endif /* MDBX_64BIT_ATOMIC */
-
-#ifndef MDBX_64BIT_CAS
-#if defined(ATOMIC_LLONG_LOCK_FREE)
-#if ATOMIC_LLONG_LOCK_FREE > 1
-#define MDBX_64BIT_CAS 1
-#else
-#define MDBX_64BIT_CAS 0
-#endif
-#elif defined(__GCC_ATOMIC_LLONG_LOCK_FREE)
-#if __GCC_ATOMIC_LLONG_LOCK_FREE > 1
-#define MDBX_64BIT_CAS 1
-#else
-#define MDBX_64BIT_CAS 0
-#endif
-#elif defined(__CLANG_ATOMIC_LLONG_LOCK_FREE)
-#if __CLANG_ATOMIC_LLONG_LOCK_FREE > 1
-#define MDBX_64BIT_CAS 1
-#else
-#define MDBX_64BIT_CAS 0
-#endif
-#elif defined(_MSC_VER) || defined(__APPLE__)
-#define MDBX_64BIT_CAS 1
-#else
-#define MDBX_64BIT_CAS MDBX_64BIT_ATOMIC
-#endif
-#define MDBX_64BIT_CAS_CONFIG "AUTO=" STRINGIFY(MDBX_64BIT_CAS)
-#else
-#define MDBX_64BIT_CAS_CONFIG STRINGIFY(MDBX_64BIT_CAS)
-#endif /* MDBX_64BIT_CAS */
-
-#define MDBX_LOCKING_WIN32FILES -1
-#define MDBX_LOCKING_SYSV 5         /* SystemV IPC semaphores */
-#define MDBX_LOCKING_POSIX1988 1988 /* POSIX-1 Shared anonymous semaphores */
-#define MDBX_LOCKING_POSIX2001 2001 /* POSIX-2001 Shared Mutexes */
-#define MDBX_LOCKING_POSIX2008 2008 /* POSIX-2008 Robust Mutexes */
-#define MDBX_LOCKING_BENAPHORE 1995 /* BeOS Benaphores, aka Futexes */
-
-#if defined(_WIN32) || defined(_WIN64)
-#define MDBX_LOCKING MDBX_LOCKING_WIN32FILES
-#else
-#ifndef MDBX_LOCKING
-#if defined(_POSIX_THREAD_PROCESS_SHARED) &&                                   \
-    _POSIX_THREAD_PROCESS_SHARED >= 200112L && !defined(__FreeBSD__)
-
-/* Some platforms define the EOWNERDEAD error code even though they
- * don't support Robust Mutexes. If doubt compile with -MDBX_LOCKING=2001. */
-#if defined(EOWNERDEAD) && _POSIX_THREAD_PROCESS_SHARED >= 200809L &&          \
-    (defined(_POSIX_THREAD_ROBUST_PRIO_INHERIT) ||                             \
-     defined(_POSIX_THREAD_ROBUST_PRIO_PROTECT) ||                             \
-     defined(PTHREAD_MUTEX_ROBUST) || defined(PTHREAD_MUTEX_ROBUST_NP)) &&     \
-    (!defined(__GLIBC__) ||                                                    \
-     __GLIBC_PREREQ(2, 10) /* troubles with Robust mutexes before 2.10 */)
-#define MDBX_LOCKING MDBX_LOCKING_POSIX2008
-#else
-#define MDBX_LOCKING MDBX_LOCKING_POSIX2001
-#endif
-#elif defined(__sun) || defined(__SVR4) || defined(__svr4__)
-#define MDBX_LOCKING MDBX_LOCKING_POSIX1988
-#else
-#define MDBX_LOCKING MDBX_LOCKING_SYSV
-#endif
-#define MDBX_LOCKING_CONFIG "AUTO=" STRINGIFY(MDBX_LOCKING)
-#else
-#define MDBX_LOCKING_CONFIG STRINGIFY(MDBX_LOCKING)
-#endif /* MDBX_LOCKING */
-#endif /* !Windows */
-
-#ifndef MDBX_USE_OFDLOCKS
-#if defined(F_OFD_SETLK) && defined(F_OFD_SETLKW) && defined(F_OFD_GETLK) &&   \
-    !defined(MDBX_SAFE4QEMU) &&                                                \
-    !defined(__sun) /* OFD-lock are broken on Solaris */
-#define MDBX_USE_OFDLOCKS 1
-#else
-#define MDBX_USE_OFDLOCKS 0
-#endif
-#define MDBX_USE_OFDLOCKS_CONFIG "AUTO=" STRINGIFY(MDBX_USE_OFDLOCKS)
-#else
-#define MDBX_USE_OFDLOCKS_CONFIG STRINGIFY(MDBX_USE_OFDLOCKS)
-#endif /* MDBX_USE_OFDLOCKS */
-
-/* Does a system have battery-backed Real-Time Clock or just a fake. */
-#ifndef MDBX_TRUST_RTC
-#if defined(__linux__) || defined(__gnu_linux__) || defined(__NetBSD__) ||     \
-    defined(__OpenBSD__)
-#define MDBX_TRUST_RTC 0 /* a lot of embedded systems have a fake RTC */
-#else
-#define MDBX_TRUST_RTC 1
-#endif
-#define MDBX_TRUST_RTC_CONFIG "AUTO=" STRINGIFY(MDBX_TRUST_RTC)
-#else
-#define MDBX_TRUST_RTC_CONFIG STRINGIFY(MDBX_TRUST_RTC)
-#endif /* MDBX_TRUST_RTC */
diff --git a/test/base.h b/test/base.h
index 04942818..05dfd1c4 100644
--- a/test/base.h
+++ b/test/base.h
@@ -91,6 +91,8 @@
 #define __thread __declspec(thread)
 #endif /* __thread */
 
+#include "../src/elements/options.h"
+
 #ifdef _MSC_VER
 #pragma warning(pop)
 #pragma warning(disable : 4201) /* nonstandard extension used :                \