diff --git a/Makefile b/Makefile
index 1abc03d6..92623b7d 100644
--- a/Makefile
+++ b/Makefile
@@ -23,6 +23,7 @@ suffix	?=
 
 CC	?= gcc
 CXX	?= g++
+LD	?= ld
 CFLAGS	?= -O2 -g3 -Wall -Werror -Wextra -ffunction-sections -fPIC -fvisibility=hidden
 
 XCFLAGS	?= -DNDEBUG=1 -DMDBX_DEBUG=0 -DLIBMDBX_EXPORTS=1
@@ -32,8 +33,8 @@ TESTDB	?= $(shell [ -d /dev/shm ] && echo /dev/shm || echo /tmp)/mdbx-test.db
 TESTLOG ?= $(shell [ -d /dev/shm ] && echo /dev/shm || echo /tmp)/mdbx-test.log
 
 # LY: '--no-as-needed,-lrt' for ability to built with modern glibc, but then run with the old
-LDFLAGS	?= -Wl,--gc-sections,-z,relro,-O1,--no-as-needed,-lrt
-EXE_LDFLAGS ?= -pthread -lrt
+LDFLAGS	?= $(shell $(LD) --help 2>/dev/null | grep -q -- --gc-sections && echo '-Wl,--gc-sections,-z,relro,-O1')$(shell $(LD) --help 2>/dev/null | grep -q -- -dead_strip && echo '-Wl,-dead_strip')
+EXE_LDFLAGS ?= -pthread
 
 # LY: just for benchmarking
 IOARENA ?= $(shell \
diff --git a/src/bits.h b/src/bits.h
index 52e89f45..aded72c8 100644
--- a/src/bits.h
+++ b/src/bits.h
@@ -30,6 +30,10 @@
 #   define _FILE_OFFSET_BITS 64
 #endif
 
+#ifdef __APPLE__
+#define _DARWIN_C_SOURCE
+#endif
+
 #ifdef _MSC_VER
 #   if _MSC_VER < 1400
 #       error "Microsoft Visual C++ 8.0 (Visual Studio 2005) or later version is required"
diff --git a/src/lck-posix.c b/src/lck-posix.c
index bbb07c4f..37f4026e 100644
--- a/src/lck-posix.c
+++ b/src/lck-posix.c
@@ -18,7 +18,7 @@
  * even though they don't support Robust Mutexes.
  * Compile with -DMDBX_USE_ROBUST=0. */
 #ifndef MDBX_USE_ROBUST
-#if defined(EOWNERDEAD) || _POSIX_C_SOURCE >= 200809L
+#if (defined(EOWNERDEAD) || _POSIX_C_SOURCE >= 200809L) && !defined(__APPLE__)
 #define MDBX_USE_ROBUST 1
 #else
 #define MDBX_USE_ROBUST 0
diff --git a/src/mdbx.c b/src/mdbx.c
index 138f4e0e..93eef3d0 100644
--- a/src/mdbx.c
+++ b/src/mdbx.c
@@ -292,6 +292,16 @@ static CRITICAL_SECTION rthc_critical_section;
 #else
 int __cxa_thread_atexit_impl(void (*dtor)(void *), void *obj, void *dso_symbol)
     __attribute__((weak));
+#ifdef __APPLE__ /* FIXME: Thread-Local Storage destructors & DSO-unloading */
+int __cxa_thread_atexit_impl(void (*dtor)(void *), void *obj,
+                             void *dso_symbol) {
+  (void)dtor;
+  (void)obj;
+  (void)dso_symbol;
+  return -1;
+}
+#endif           /* __APPLE__ */
+
 static pthread_mutex_t mdbx_rthc_mutex = PTHREAD_MUTEX_INITIALIZER;
 static pthread_cond_t mdbx_rthc_cond = PTHREAD_COND_INITIALIZER;
 static mdbx_thread_key_t mdbx_rthc_key;
@@ -515,9 +525,9 @@ __cold void mdbx_rthc_global_dtor(void) {
     mdbx_thread_key_delete(key);
     for (MDBX_reader *rthc = rthc_table[i].begin; rthc < rthc_table[i].end;
          ++rthc) {
-      mdbx_trace("== [%i] = key %u, %p ... %p, rthc %p (%+i), "
+      mdbx_trace("== [%i] = key %zu, %p ... %p, rthc %p (%+i), "
                  "rthc-pid %i, current-pid %i",
-                 i, key, rthc_table[i].begin, rthc_table[i].end, rthc,
+                 i, (size_t)key, rthc_table[i].begin, rthc_table[i].end, rthc,
                  (int)(rthc - rthc_table[i].begin), rthc->mr_pid, self_pid);
       if (rthc->mr_pid == self_pid) {
         rthc->mr_pid = 0;
@@ -553,8 +563,8 @@ __cold int mdbx_rthc_alloc(mdbx_thread_key_t *key, MDBX_reader *begin,
     return rc;
 
   mdbx_rthc_lock();
-  mdbx_trace(">> key 0x%x, rthc_count %u, rthc_limit %u", *key, rthc_count,
-             rthc_limit);
+  mdbx_trace(">> key %zu, rthc_count %u, rthc_limit %u", (size_t)*key,
+             rthc_count, rthc_limit);
   if (rthc_count == rthc_limit) {
     rthc_entry_t *new_table =
         mdbx_realloc((rthc_table == rthc_table_static) ? nullptr : rthc_table,
@@ -568,13 +578,14 @@ __cold int mdbx_rthc_alloc(mdbx_thread_key_t *key, MDBX_reader *begin,
     rthc_table = new_table;
     rthc_limit *= 2;
   }
-  mdbx_trace("== [%i] = key %u, %p ... %p", rthc_count, *key, begin, end);
+  mdbx_trace("== [%i] = key %zu, %p ... %p", rthc_count, (size_t)*key, begin,
+             end);
   rthc_table[rthc_count].key = *key;
   rthc_table[rthc_count].begin = begin;
   rthc_table[rthc_count].end = end;
   ++rthc_count;
-  mdbx_trace("<< key 0x%x, rthc_count %u, rthc_limit %u", *key, rthc_count,
-             rthc_limit);
+  mdbx_trace("<< key %zu, rthc_count %u, rthc_limit %u", (size_t)*key,
+             rthc_count, rthc_limit);
   mdbx_rthc_unlock();
   return MDBX_SUCCESS;
 
@@ -587,8 +598,8 @@ bailout:
 __cold void mdbx_rthc_remove(const mdbx_thread_key_t key) {
   mdbx_thread_key_delete(key);
   mdbx_rthc_lock();
-  mdbx_trace(">> key 0x%x, rthc_count %u, rthc_limit %u", key, rthc_count,
-             rthc_limit);
+  mdbx_trace(">> key %zu, rthc_count %u, rthc_limit %u", (size_t)key,
+             rthc_count, rthc_limit);
 
   for (unsigned i = 0; i < rthc_count; ++i) {
     if (key == rthc_table[i].key) {
@@ -614,8 +625,8 @@ __cold void mdbx_rthc_remove(const mdbx_thread_key_t key) {
     }
   }
 
-  mdbx_trace("<< key 0x%x, rthc_count %u, rthc_limit %u", key, rthc_count,
-             rthc_limit);
+  mdbx_trace("<< key %zu, rthc_count %u, rthc_limit %u", (size_t)key,
+             rthc_count, rthc_limit);
   mdbx_rthc_unlock();
 }
 
diff --git a/src/osal.c b/src/osal.c
index e0858733..4988c04c 100644
--- a/src/osal.c
+++ b/src/osal.c
@@ -159,9 +159,14 @@ typedef struct _FILE_PROVIDER_EXTERNAL_INFO_V1 {
 /* Prototype should match libc runtime. ISO POSIX (2003) & LSB 1.x-3.x */
 __nothrow __noreturn void __assert_fail(const char *assertion, const char *file,
                                         unsigned line, const char *function);
-#elif (defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) ||  \
-       defined(__BSD__) || defined(__NETBSD__) || defined(__bsdi__) ||         \
-       defined(__DragonFly__))
+#elif defined(__APPLE__) || defined(__MACH__)
+__nothrow __noreturn void __assert_rtn(const char *function, const char *file,
+                                       int line, const char *assertion);
+#define __assert_fail(assertion, file, line, function)                         \
+  __assert_rtn(function, file, line, assertion)
+#elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) ||   \
+    defined(__BSD__) || defined(__NETBSD__) || defined(__bsdi__) ||            \
+    defined(__DragonFly__)
 __nothrow __noreturn void __assert(const char *function, const char *file,
                                    int line, const char *assertion);
 #define __assert_fail(assertion, file, line, function)                         \
@@ -548,6 +553,9 @@ int mdbx_openfile(const char *pathname, int flags, mode_t mode,
     if (fd_flags != -1)
       (void)fcntl(*fd, F_SETFL, fd_flags | O_DIRECT);
 #endif /* O_DIRECT */
+#if defined(F_NOCACHE)
+    (void)fcntl(*fd, F_NOCACHE, 1);
+#endif /* F_NOCACHE */
   }
 #endif
 
@@ -626,7 +634,7 @@ int mdbx_pwrite(mdbx_filehandle_t fd, const void *buf, size_t bytes,
 
 int mdbx_pwritev(mdbx_filehandle_t fd, struct iovec *iov, int iovcnt,
                  uint64_t offset, size_t expected_written) {
-#if defined(_WIN32) || defined(_WIN64)
+#if defined(_WIN32) || defined(_WIN64) || defined(__APPLE__)
   size_t written = 0;
   for (int i = 0; i < iovcnt; ++i) {
     int rc = mdbx_pwrite(fd, iov[i].iov_base, iov[i].iov_len, offset);
@@ -1158,7 +1166,10 @@ retry_mapview:;
   return rc;
 #else
   if (limit != map->length) {
-#if defined(_GNU_SOURCE) && !defined(__FreeBSD__)
+#if defined(_GNU_SOURCE) &&                                                    \
+    !(defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) ||   \
+      defined(__BSD__) || defined(__NETBSD__) || defined(__bsdi__) ||          \
+      defined(__DragonFly__) || defined(__APPLE__) || defined(__MACH__))
     void *ptr = mremap(map->address, map->length, limit,
                        /* LY: in case changing the mapping size calling code
                           must guarantees the absence of competing threads, and
diff --git a/src/osal.h b/src/osal.h
index d57a380a..0e847a2f 100644
--- a/src/osal.h
+++ b/src/osal.h
@@ -55,7 +55,7 @@
 #include <time.h>
 #if !(defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) ||   \
       defined(__BSD__) || defined(__NETBSD__) || defined(__bsdi__) ||          \
-      defined(__DragonFly__))
+      defined(__DragonFly__) || defined(__APPLE__) || defined(__MACH__))
 #include <malloc.h>
 #endif /* xBSD */