diff --git a/jemalloc/configure.ac b/jemalloc/configure.ac
index 0a32ac80..215131a2 100644
--- a/jemalloc/configure.ac
+++ b/jemalloc/configure.ac
@@ -94,7 +94,6 @@ if test "x$CFLAGS" = "x" ; then
   JE_CFLAGS_APPEND([-pipe])
   JE_CFLAGS_APPEND([-g3])
   JE_CFLAGS_APPEND([-march=native])
-  JE_CFLAGS_APPEND([-ftls-model=initial-exec])
 fi
 dnl Append EXTRA_CFLAGS to CFLAGS, if defined.
 if test "x$EXTRA_CFLAGS" != "x" ; then
@@ -152,9 +151,7 @@ JE_COMPILABLE([__attribute__ syntax],
               [],
               [attribute])
 if test "x${attribute}" = "xyes" ; then
-  AC_DEFINE_UNQUOTED([JEMALLOC_UNUSED], [__attribute__((unused))])
-else
-  AC_DEFINE_UNQUOTED([JEMALLOC_UNUSED], [])
+  AC_DEFINE([JEMALLOC_HAVE_ATTR], [ ])
 fi
 
 dnl Platform-specific settings.  abi and RPATH can probably be determined
diff --git a/jemalloc/src/jemalloc.c b/jemalloc/src/jemalloc.c
index 41a95d7b..e53d9dea 100644
--- a/jemalloc/src/jemalloc.c
+++ b/jemalloc/src/jemalloc.c
@@ -739,7 +739,8 @@ static unsigned		ncpus;
 static malloc_mutex_t		trace_mtx;
 static unsigned			trace_next_tid = 1;
 
-static unsigned __thread	trace_tid;
+static unsigned __thread	trace_tid
+    JEMALLOC_ATTR(tls_model("initial-exec"));
 /* Used to cause trace_cleanup() to be called. */
 static pthread_key_t		trace_tsd;
 #endif
@@ -1008,12 +1009,14 @@ static malloc_mutex_t	arenas_lock; /* Protects arenas initialization. */
  * Map of pthread_self() --> arenas[???], used for selecting an arena to use
  * for allocations.
  */
-static __thread arena_t		*arenas_map;
+static __thread arena_t		*arenas_map
+    JEMALLOC_ATTR(tls_model("initial-exec"));
 #endif
 
 #ifdef JEMALLOC_TCACHE
 /* Map of thread-specific caches. */
-static __thread tcache_t	*tcache_tls;
+static __thread tcache_t	*tcache_tls
+    JEMALLOC_ATTR(tls_model("initial-exec"));
 
 /*
  * Same contents as tcache, but initialized such that the TSD destructor is
@@ -1041,8 +1044,11 @@ static
 #ifndef NO_TLS
        __thread
 #endif
-                bool	mmap_unaligned;
-
+                bool	mmap_unaligned
+#ifndef NO_TLS
+                                       JEMALLOC_ATTR(tls_model("initial-exec"))
+#endif
+                                                                               ;
 #ifdef JEMALLOC_STATS
 /* Chunk statistics. */
 static chunk_stats_t	stats_chunks;
@@ -1749,8 +1755,8 @@ extent_szad_comp(extent_node_t *a, extent_node_t *b)
 }
 
 /* Wrap red-black tree macros in functions. */
-rb_wrap(static JEMALLOC_UNUSED, extent_tree_szad_, extent_tree_t, extent_node_t,
-    link_szad, extent_szad_comp)
+rb_wrap(static JEMALLOC_ATTR(unused), extent_tree_szad_, extent_tree_t,
+    extent_node_t, link_szad, extent_szad_comp)
 #endif
 
 static inline int
@@ -1763,8 +1769,8 @@ extent_ad_comp(extent_node_t *a, extent_node_t *b)
 }
 
 /* Wrap red-black tree macros in functions. */
-rb_wrap(static JEMALLOC_UNUSED, extent_tree_ad_, extent_tree_t, extent_node_t,
-    link_ad, extent_ad_comp)
+rb_wrap(static JEMALLOC_ATTR(unused), extent_tree_ad_, extent_tree_t,
+    extent_node_t, link_ad, extent_ad_comp)
 
 /*
  * End extent tree code.
@@ -2322,8 +2328,8 @@ arena_chunk_comp(arena_chunk_t *a, arena_chunk_t *b)
 }
 
 /* Wrap red-black tree macros in functions. */
-rb_wrap(static JEMALLOC_UNUSED, arena_chunk_tree_dirty_, arena_chunk_tree_t,
-    arena_chunk_t, link_dirty, arena_chunk_comp)
+rb_wrap(static JEMALLOC_ATTR(unused), arena_chunk_tree_dirty_,
+    arena_chunk_tree_t, arena_chunk_t, link_dirty, arena_chunk_comp)
 
 static inline int
 arena_run_comp(arena_chunk_map_t *a, arena_chunk_map_t *b)
@@ -2338,7 +2344,7 @@ arena_run_comp(arena_chunk_map_t *a, arena_chunk_map_t *b)
 }
 
 /* Wrap red-black tree macros in functions. */
-rb_wrap(static JEMALLOC_UNUSED, arena_run_tree_, arena_run_tree_t,
+rb_wrap(static JEMALLOC_ATTR(unused), arena_run_tree_, arena_run_tree_t,
     arena_chunk_map_t, link, arena_run_comp)
 
 static inline int
@@ -2370,7 +2376,7 @@ arena_avail_comp(arena_chunk_map_t *a, arena_chunk_map_t *b)
 }
 
 /* Wrap red-black tree macros in functions. */
-rb_wrap(static JEMALLOC_UNUSED, arena_avail_tree_, arena_avail_tree_t,
+rb_wrap(static JEMALLOC_ATTR(unused), arena_avail_tree_, arena_avail_tree_t,
     arena_chunk_map_t, link, arena_avail_comp)
 
 static inline void
@@ -6086,6 +6092,7 @@ MALLOC_OUT:
  * Begin malloc(3)-compatible functions.
  */
 
+JEMALLOC_ATTR(malloc)
 void *
 malloc(size_t size)
 {
@@ -6142,6 +6149,7 @@ RETURN:
 	return (ret);
 }
 
+JEMALLOC_ATTR(nonnull(1))
 int
 posix_memalign(void **memptr, size_t alignment, size_t size)
 {
@@ -6217,6 +6225,7 @@ RETURN:
 	return (ret);
 }
 
+JEMALLOC_ATTR(malloc)
 void *
 calloc(size_t num, size_t size)
 {
diff --git a/jemalloc/src/jemalloc.h b/jemalloc/src/jemalloc.h
index 94bb752d..c7f556ba 100644
--- a/jemalloc/src/jemalloc.h
+++ b/jemalloc/src/jemalloc.h
@@ -6,8 +6,14 @@ extern "C" {
 
 #include "jemalloc_defs.h"
 
-size_t	malloc_usable_size(const void *ptr);
+void	*malloc(size_t size) JEMALLOC_ATTR(malloc);
+void	*calloc(size_t num, size_t size) JEMALLOC_ATTR(malloc);
+int	posix_memalign(void **memptr, size_t alignment, size_t size)
+    JEMALLOC_ATTR(nonnull(1));
+void	*realloc(void *ptr, size_t size);
+void	free(void *ptr);
 
+size_t	malloc_usable_size(const void *ptr);
 #ifdef JEMALLOC_TCACHE
 void	malloc_tcache_flush(void);
 #endif
diff --git a/jemalloc/src/jemalloc_defs.h.in b/jemalloc/src/jemalloc_defs.h.in
index e7858260..ef663fc5 100644
--- a/jemalloc/src/jemalloc_defs.h.in
+++ b/jemalloc/src/jemalloc_defs.h.in
@@ -36,12 +36,13 @@
  */
 #undef CPU_SPINWAIT
 
-/*
- * Attribute with which to mark potentially unused functions.  For gcc this is:
- *
- *   __attribute__((unused))
- */
-#undef JEMALLOC_UNUSED
+/* Defined if __attribute__((...)) syntax is supported. */
+#undef JEMALLOC_HAVE_ATTR
+#ifdef JEMALLOC_HAVE_ATTR
+#  define JEMALLOC_ATTR(s) __attribute__((s))
+#else
+#  define JEMALLOC_ATTR(s)
+#endif
 
 /*
  * JEMALLOC_DEBUG enables assertions and other sanity checks, and disables
diff --git a/jemalloc/src/mtrgraph.c b/jemalloc/src/mtrgraph.c
index 04e6631f..cc17be29 100644
--- a/jemalloc/src/mtrgraph.c
+++ b/jemalloc/src/mtrgraph.c
@@ -65,7 +65,7 @@ cacheComp(AllocationCacheRecord *a, AllocationCacheRecord *b)
     }
 }
 
-rb_wrap(static JEMALLOC_UNUSED, cache_tree_, AllocationCache,
+rb_wrap(static JEMALLOC_ATTR(unused), cache_tree_, AllocationCache,
     AllocationCacheRecord, link, cacheComp)
 
 // Parse utrace records.  Following are prototypical examples of each type of
@@ -324,7 +324,7 @@ genOutput(FILE *outfile, const char *fileType, bool legend,
 		fprintf(stderr,
 			"mtrgraph: Trace record %"PRIu64
 			" realloc()s unknown object 0x%"PRIx64"\n",
-			i, trace->trace[i].oldAddr);
+			i, (uint64_t)trace->trace[i].oldAddr);
 		rVal = true;
 		goto RETURN;
 	    }
@@ -429,7 +429,7 @@ genOutput(FILE *outfile, const char *fileType, bool legend,
 		fprintf(stderr,
 			"mtrgraph: Trace record %"PRIu64
 			" free()s unknown object 0x%"PRIx64"\n",
-			i, trace->trace[i].oldAddr);
+			i, (uint64_t)trace->trace[i].oldAddr);
 		rVal = true;
 		goto RETURN;
 	    }
diff --git a/jemalloc/src/mtrplay.c b/jemalloc/src/mtrplay.c
index 2ed2a6c7..776ca261 100644
--- a/jemalloc/src/mtrplay.c
+++ b/jemalloc/src/mtrplay.c
@@ -43,8 +43,8 @@ record_comp(record_t *a, record_t *b)
 		return (1);
 }
 
-rb_wrap(static JEMALLOC_UNUSED, record_tree_, record_tree_t, record_t, link,
-    record_comp)
+rb_wrap(static JEMALLOC_ATTR(unused), record_tree_, record_tree_t, record_t,
+    link, record_comp)
 
 static record_t *rec_stack = NULL;