Merge branch 'rickard/info/OTP-11196' into maint

* rickard/info/OTP-11196:
  Add test cases for native atomics and jump table
  Refuse to build SMP runtime by default without native atomics
  Make information about use of jump table available via system_info BIF
  Make ethread library information available via system_info BIF
  Make emulator arguments available via the system_info BIF

16 files changed, 1329 insertions, 975 deletions

diff --git a/HOWTO/INSTALL.md b/HOWTO/INSTALL.md
index 8051bc4393..fa1b9d2e89 100644
--- a/HOWTO/INSTALL.md
+++ b/HOWTO/INSTALL.md
@@ -288,6 +288,14 @@ Some of the available `configure` options are:
     implementation available, you typically want to try using the
     `libatomic_ops` library. It can be downloaded from
     <http://www.hpl.hp.com/research/linux/atomic_ops/>.
+*   `--disable-smp-require-native-atomics` - By default `configure` will
+    fail if an SMP runtime system is about to be built, and no implementation
+    for native atomic memory accesses can be found. If this happens, you are
+    encouraged to find a native atomic implementation that can be used, e.g.,
+    using `libatomic_ops`, but by passing `--disable-smp-require-native-atomics`
+    you can build using a fallback implementation based on mutexes or spinlocks.
+    Performance of the SMP runtime system will however suffer immensely without
+    an implementation for native atomic memory accesses.
 
 If you or your system has special requirements please read the `Makefile` for
 additional configuration information.
diff --git a/aclocal.m4 b/aclocal.m4
index 25f40944e7..aeb31fa58a 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -954,6 +954,40 @@ dnl
 AC_DEFUN(ERL_FIND_ETHR_LIB,
 [
 
+AC_ARG_ENABLE(native-ethr-impls,
+	      AS_HELP_STRING([--disable-native-ethr-impls],
+                             [disable native ethread implementations]),
+[ case "$enableval" in
+    no) disable_native_ethr_impls=yes ;;
+    *)  disable_native_ethr_impls=no ;;
+  esac ], disable_native_ethr_impls=no)
+
+test "X$disable_native_ethr_impls" = "Xyes" &&
+  AC_DEFINE(ETHR_DISABLE_NATIVE_IMPLS, 1, [Define if you want to disable native ethread implementations])
+
+AC_ARG_ENABLE(x86-out-of-order,
+	      AS_HELP_STRING([--enable-x86-out-of-order],
+                             [enable x86/x84_64 out of order support (default disabled)]))
+
+AC_ARG_ENABLE(prefer-gcc-native-ethr-impls,
+	      AS_HELP_STRING([--enable-prefer-gcc-native-ethr-impls],
+			     [prefer gcc native ethread implementations]),
+[ case "$enableval" in
+    yes) enable_prefer_gcc_native_ethr_impls=yes ;;
+    *)  enable_prefer_gcc_native_ethr_impls=no ;;
+  esac ], enable_prefer_gcc_native_ethr_impls=no)
+
+test $enable_prefer_gcc_native_ethr_impls = yes &&
+  AC_DEFINE(ETHR_PREFER_GCC_NATIVE_IMPLS, 1, [Define if you prefer gcc native ethread implementations])
+
+AC_ARG_WITH(libatomic_ops,
+	    AS_HELP_STRING([--with-libatomic_ops=PATH],
+			   [specify and prefer usage of libatomic_ops in the ethread library]))
+
+AC_ARG_WITH(with_sparc_memory_order,
+	    AS_HELP_STRING([--with-sparc-memory-order=TSO|PSO|RMO],
+			   [specify sparc memory order (defaults to RMO)]))
+
 LM_CHECK_THR_LIB
 ERL_INTERNAL_LIBS
 
@@ -1003,40 +1037,44 @@ case "$THR_LIB_NAME" in
 
 	AC_DEFINE(ETHR_WIN32_THREADS, 1, [Define if you have win32 threads])
 
-	ETHR_CHK_INTERLOCKED([_InterlockedDecrement], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT, 1, [Define if you have _InterlockedDecrement()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedDecrement_rel], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT_REL, 1, [Define if you have _InterlockedDecrement_rel()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedIncrement], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT, 1, [Define if you have _InterlockedIncrement()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedIncrement_acq], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT_ACQ, 1, [Define if you have _InterlockedIncrement_acq()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD, 1, [Define if you have _InterlockedExchangeAdd()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd_acq], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD_ACQ, 1, [Define if you have _InterlockedExchangeAdd_acq()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedAnd], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDAND, 1, [Define if you have _InterlockedAnd()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedOr], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDOR, 1, [Define if you have _InterlockedOr()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedExchange], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGE, 1, [Define if you have _InterlockedExchange()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange], [3], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE, 1, [Define if you have _InterlockedCompareExchange()]))
-	test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
-	ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange_acq], [3], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE_ACQ, 1, [Define if you have _InterlockedCompareExchange_acq()]))
-	test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
-	ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange_rel], [3], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE_REL, 1, [Define if you have _InterlockedCompareExchange_rel()]))
-	test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
-
-	ETHR_CHK_INTERLOCKED([_InterlockedDecrement64], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT64, 1, [Define if you have _InterlockedDecrement64()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedDecrement64_rel], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT64_REL, 1, [Define if you have _InterlockedDecrement64_rel()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedIncrement64], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT64, 1, [Define if you have _InterlockedIncrement64()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedIncrement64_acq], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT64_ACQ, 1, [Define if you have _InterlockedIncrement64_acq()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD64, 1, [Define if you have _InterlockedExchangeAdd64()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd64_acq], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD64_ACQ, 1, [Define if you have _InterlockedExchangeAdd64_acq()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedAnd64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDAND64, 1, [Define if you have _InterlockedAnd64()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedOr64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDOR64, 1, [Define if you have _InterlockedOr64()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedExchange64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGE64, 1, [Define if you have _InterlockedExchange64()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange64], [3], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE64, 1, [Define if you have _InterlockedCompareExchange64()]))
-	test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
-	ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange64_acq], [3], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE64_ACQ, 1, [Define if you have _InterlockedCompareExchange64_acq()]))
-	test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
-	ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange64_rel], [3], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE64_REL, 1, [Define if you have _InterlockedCompareExchange64_rel()]))
-	test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
-
-	ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange128], [4], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE128, 1, [Define if you have _InterlockedCompareExchange128()]))
-
+	if test "X$disable_native_ethr_impls" = "Xyes"; then
+	    have_interlocked_op=no
+	    ethr_have_native_atomics=no
+	else
+	    ETHR_CHK_INTERLOCKED([_InterlockedDecrement], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT, 1, [Define if you have _InterlockedDecrement()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedDecrement_rel], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT_REL, 1, [Define if you have _InterlockedDecrement_rel()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedIncrement], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT, 1, [Define if you have _InterlockedIncrement()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedIncrement_acq], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT_ACQ, 1, [Define if you have _InterlockedIncrement_acq()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD, 1, [Define if you have _InterlockedExchangeAdd()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd_acq], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD_ACQ, 1, [Define if you have _InterlockedExchangeAdd_acq()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedAnd], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDAND, 1, [Define if you have _InterlockedAnd()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedOr], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDOR, 1, [Define if you have _InterlockedOr()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedExchange], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGE, 1, [Define if you have _InterlockedExchange()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange], [3], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE, 1, [Define if you have _InterlockedCompareExchange()]))
+	    test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
+	    ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange_acq], [3], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE_ACQ, 1, [Define if you have _InterlockedCompareExchange_acq()]))
+	    test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
+	    ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange_rel], [3], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE_REL, 1, [Define if you have _InterlockedCompareExchange_rel()]))
+	    test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
+
+	    ETHR_CHK_INTERLOCKED([_InterlockedDecrement64], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT64, 1, [Define if you have _InterlockedDecrement64()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedDecrement64_rel], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT64_REL, 1, [Define if you have _InterlockedDecrement64_rel()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedIncrement64], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT64, 1, [Define if you have _InterlockedIncrement64()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedIncrement64_acq], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT64_ACQ, 1, [Define if you have _InterlockedIncrement64_acq()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD64, 1, [Define if you have _InterlockedExchangeAdd64()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd64_acq], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD64_ACQ, 1, [Define if you have _InterlockedExchangeAdd64_acq()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedAnd64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDAND64, 1, [Define if you have _InterlockedAnd64()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedOr64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDOR64, 1, [Define if you have _InterlockedOr64()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedExchange64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGE64, 1, [Define if you have _InterlockedExchange64()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange64], [3], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE64, 1, [Define if you have _InterlockedCompareExchange64()]))
+	    test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
+	    ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange64_acq], [3], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE64_ACQ, 1, [Define if you have _InterlockedCompareExchange64_acq()]))
+	    test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
+	    ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange64_rel], [3], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE64_REL, 1, [Define if you have _InterlockedCompareExchange64_rel()]))
+	    test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
+
+	    ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange128], [4], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE128, 1, [Define if you have _InterlockedCompareExchange128()]))
+	fi
 	test "$ethr_have_native_atomics" = "yes" && ethr_have_native_spinlock=yes
 	;;
 
@@ -1303,93 +1341,98 @@ case "$THR_LIB_NAME" in
 	    int128="__int128_t"
 	fi
 
-	ETHR_CHK_SYNC_OP([__sync_val_compare_and_swap], [3], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_VAL_COMPARE_AND_SWAP32, 1, [Define if you have __sync_val_compare_and_swap() for 32-bit integers]))
-	test "$have_sync_op" = "yes" && ethr_have_native_atomics=yes
-	ETHR_CHK_SYNC_OP([__sync_add_and_fetch], [2], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_ADD_AND_FETCH32, 1, [Define if you have __sync_add_and_fetch() for 32-bit integers]))
-	ETHR_CHK_SYNC_OP([__sync_fetch_and_and], [2], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_AND32, 1, [Define if you have __sync_fetch_and_and() for 32-bit integers]))
-	ETHR_CHK_SYNC_OP([__sync_fetch_and_or], [2], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_OR32, 1, [Define if you have __sync_fetch_and_or() for 32-bit integers]))
+	if test "X$disable_native_ethr_impls" = "Xyes"; then
+	    ethr_have_native_atomics=no
+	else
+	    ETHR_CHK_SYNC_OP([__sync_val_compare_and_swap], [3], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_VAL_COMPARE_AND_SWAP32, 1, [Define if you have __sync_val_compare_and_swap() for 32-bit integers]))
+	    test "$have_sync_op" = "yes" && ethr_have_native_atomics=yes
+	    ETHR_CHK_SYNC_OP([__sync_add_and_fetch], [2], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_ADD_AND_FETCH32, 1, [Define if you have __sync_add_and_fetch() for 32-bit integers]))
+	    ETHR_CHK_SYNC_OP([__sync_fetch_and_and], [2], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_AND32, 1, [Define if you have __sync_fetch_and_and() for 32-bit integers]))
+	    ETHR_CHK_SYNC_OP([__sync_fetch_and_or], [2], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_OR32, 1, [Define if you have __sync_fetch_and_or() for 32-bit integers]))
+
+	    ETHR_CHK_SYNC_OP([__sync_val_compare_and_swap], [3], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_VAL_COMPARE_AND_SWAP64, 1, [Define if you have __sync_val_compare_and_swap() for 64-bit integers]))
+	    test "$have_sync_op" = "yes" && ethr_have_native_atomics=yes
+	    ETHR_CHK_SYNC_OP([__sync_add_and_fetch], [2], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_ADD_AND_FETCH64, 1, [Define if you have __sync_add_and_fetch() for 64-bit integers]))
+	    ETHR_CHK_SYNC_OP([__sync_fetch_and_and], [2], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_AND64, 1, [Define if you have __sync_fetch_and_and() for 64-bit integers]))
+	    ETHR_CHK_SYNC_OP([__sync_fetch_and_or], [2], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_OR64, 1, [Define if you have __sync_fetch_and_or() for 64-bit integers]))
+
+	    if test $int128 != no; then
+	        ETHR_CHK_SYNC_OP([__sync_val_compare_and_swap], [3], [128], [$int128], AC_DEFINE(ETHR_HAVE___SYNC_VAL_COMPARE_AND_SWAP128, 1, [Define if you have __sync_val_compare_and_swap() for 128-bit integers]))
+	    fi
 
-	ETHR_CHK_SYNC_OP([__sync_val_compare_and_swap], [3], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_VAL_COMPARE_AND_SWAP64, 1, [Define if you have __sync_val_compare_and_swap() for 64-bit integers]))
-	test "$have_sync_op" = "yes" && ethr_have_native_atomics=yes
-	ETHR_CHK_SYNC_OP([__sync_add_and_fetch], [2], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_ADD_AND_FETCH64, 1, [Define if you have __sync_add_and_fetch() for 64-bit integers]))
-	ETHR_CHK_SYNC_OP([__sync_fetch_and_and], [2], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_AND64, 1, [Define if you have __sync_fetch_and_and() for 64-bit integers]))
-	ETHR_CHK_SYNC_OP([__sync_fetch_and_or], [2], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_OR64, 1, [Define if you have __sync_fetch_and_or() for 64-bit integers]))
+	    AC_MSG_CHECKING([for a usable libatomic_ops implementation])
+	    case "x$with_libatomic_ops" in
+	        xno | xyes | x)
+	    	    libatomic_ops_include=
+	    	    ;;
+	        *)
+	    	    if test -d "${with_libatomic_ops}/include"; then
+	    	        libatomic_ops_include="-I$with_libatomic_ops/include"
+	    	        CPPFLAGS="$CPPFLAGS $libatomic_ops_include"
+	    	    else
+	    	        AC_MSG_ERROR([libatomic_ops include directory $with_libatomic_ops/include not found])
+	    	    fi;;
+	    esac
+	    ethr_have_libatomic_ops=no
+	    AC_TRY_LINK([#include "atomic_ops.h"],
+	    	        [
+	    	    	    volatile AO_t x;
+	    	    	    AO_t y;
+	    	    	    int z;
+
+	    	    	    AO_nop_full();
+	    	    	    AO_store(&x, (AO_t) 0);
+	    	    	    z = AO_load(&x);
+	    	    	    z = AO_compare_and_swap_full(&x, (AO_t) 0, (AO_t) 1);
+	    	        ],
+	    	        [ethr_have_native_atomics=yes
+	    	         ethr_have_libatomic_ops=yes])
+	    AC_MSG_RESULT([$ethr_have_libatomic_ops])
+	    if test $ethr_have_libatomic_ops = yes; then
+	        AC_CHECK_SIZEOF(AO_t, ,
+	    	    	        [
+	    	    	    	    #include <stdio.h>
+	    	    	    	    #include "atomic_ops.h"
+	    	    	        ])
+	        AC_DEFINE_UNQUOTED(ETHR_SIZEOF_AO_T, $ac_cv_sizeof_AO_t, [Define to the size of AO_t if libatomic_ops is used])
+
+	        AC_DEFINE(ETHR_HAVE_LIBATOMIC_OPS, 1, [Define if you have libatomic_ops atomic operations])
+	        if test "x$with_libatomic_ops" != "xno" && test "x$with_libatomic_ops" != "x"; then
+	    	    AC_DEFINE(ETHR_PREFER_LIBATOMIC_OPS_NATIVE_IMPLS, 1, [Define if you prefer libatomic_ops native ethread implementations])
+	        fi
+	        ETHR_DEFS="$ETHR_DEFS $libatomic_ops_include"
+	    elif test "x$with_libatomic_ops" != "xno" && test "x$with_libatomic_ops" != "x"; then
+	        AC_MSG_ERROR([No usable libatomic_ops implementation found])
+	    fi
 
-	if test $int128 != no; then
-	    ETHR_CHK_SYNC_OP([__sync_val_compare_and_swap], [3], [128], [$int128], AC_DEFINE(ETHR_HAVE___SYNC_VAL_COMPARE_AND_SWAP128, 1, [Define if you have __sync_val_compare_and_swap() for 128-bit integers]))
-	fi
+	    case "$host_cpu" in
+	      sparc | sun4u | sparc64 | sun4v)
+	    	    case "$with_sparc_memory_order" in
+	    	        "TSO")
+	    	    	    AC_DEFINE(ETHR_SPARC_TSO, 1, [Define if only run in Sparc TSO mode]);;
+	    	        "PSO")
+	    	    	    AC_DEFINE(ETHR_SPARC_PSO, 1, [Define if only run in Sparc PSO, or TSO mode]);;
+	    	        "RMO"|"")
+	    	    	    AC_DEFINE(ETHR_SPARC_RMO, 1, [Define if run in Sparc RMO, PSO, or TSO mode]);;
+	    	        *)
+	    	    	    AC_MSG_ERROR([Unsupported Sparc memory order: $with_sparc_memory_order]);;
+	    	    esac
+	    	    ethr_have_native_atomics=yes;; 
+	      i86pc | i*86 | x86_64 | amd64)
+	    	    if test "$enable_x86_out_of_order" = "yes"; then
+	    	    	    AC_DEFINE(ETHR_X86_OUT_OF_ORDER, 1, [Define if x86/x86_64 out of order instructions should be synchronized])
+	    	    fi
+	    	    ethr_have_native_atomics=yes;;
+	      macppc | ppc | "Power Macintosh")
+	    	    ethr_have_native_atomics=yes;;
+	      tile)
+	    	    ethr_have_native_atomics=yes;;
+	      *)
+	    	    ;;
+	    esac
 
-	AC_MSG_CHECKING([for a usable libatomic_ops implementation])
-	case "x$with_libatomic_ops" in
-	    xno | xyes | x)
-		libatomic_ops_include=
-		;;
-	    *)
-		if test -d "${with_libatomic_ops}/include"; then
-		    libatomic_ops_include="-I$with_libatomic_ops/include"
-		    CPPFLAGS="$CPPFLAGS $libatomic_ops_include"
-		else
-		    AC_MSG_ERROR([libatomic_ops include directory $with_libatomic_ops/include not found])
-		fi;;
-	esac
-	ethr_have_libatomic_ops=no
-	AC_TRY_LINK([#include "atomic_ops.h"],
-		    [
-			volatile AO_t x;
-			AO_t y;
-			int z;
-
-			AO_nop_full();
-			AO_store(&x, (AO_t) 0);
-			z = AO_load(&x);
-			z = AO_compare_and_swap_full(&x, (AO_t) 0, (AO_t) 1);
-		    ],
-		    [ethr_have_native_atomics=yes
-		     ethr_have_libatomic_ops=yes])
-	AC_MSG_RESULT([$ethr_have_libatomic_ops])
-	if test $ethr_have_libatomic_ops = yes; then
-	    AC_CHECK_SIZEOF(AO_t, ,
-			    [
-				#include <stdio.h>
-				#include "atomic_ops.h"
-			    ])
-	    AC_DEFINE_UNQUOTED(ETHR_SIZEOF_AO_T, $ac_cv_sizeof_AO_t, [Define to the size of AO_t if libatomic_ops is used])
-
-	    AC_DEFINE(ETHR_HAVE_LIBATOMIC_OPS, 1, [Define if you have libatomic_ops atomic operations])
-	    if test "x$with_libatomic_ops" != "xno" && test "x$with_libatomic_ops" != "x"; then
-		AC_DEFINE(ETHR_PREFER_LIBATOMIC_OPS_NATIVE_IMPLS, 1, [Define if you prefer libatomic_ops native ethread implementations])
-	    fi
-	    ETHR_DEFS="$ETHR_DEFS $libatomic_ops_include"
-	elif test "x$with_libatomic_ops" != "xno" && test "x$with_libatomic_ops" != "x"; then
-	    AC_MSG_ERROR([No usable libatomic_ops implementation found])
 	fi
 
-	case "$host_cpu" in
-	  sparc | sun4u | sparc64 | sun4v)
-		case "$with_sparc_memory_order" in
-		    "TSO")
-			AC_DEFINE(ETHR_SPARC_TSO, 1, [Define if only run in Sparc TSO mode]);;
-		    "PSO")
-			AC_DEFINE(ETHR_SPARC_PSO, 1, [Define if only run in Sparc PSO, or TSO mode]);;
-		    "RMO"|"")
-			AC_DEFINE(ETHR_SPARC_RMO, 1, [Define if run in Sparc RMO, PSO, or TSO mode]);;
-		    *)
-			AC_MSG_ERROR([Unsupported Sparc memory order: $with_sparc_memory_order]);;
-		esac
-		ethr_have_native_atomics=yes;; 
-	  i86pc | i*86 | x86_64 | amd64)
-		if test "$enable_x86_out_of_order" = "yes"; then
-			AC_DEFINE(ETHR_X86_OUT_OF_ORDER, 1, [Define if x86/x86_64 out of order instructions should be synchronized])
-		fi
-		ethr_have_native_atomics=yes;;
-	  macppc | ppc | "Power Macintosh")
-		ethr_have_native_atomics=yes;;
-	  tile)
-		ethr_have_native_atomics=yes;;
-	  *)
-		;;
-	esac
-
 	test ethr_have_native_atomics = "yes" && ethr_have_native_spinlock=yes
 
 	dnl Restore LIBS
@@ -1451,40 +1494,6 @@ esac
 
 AC_C_DOUBLE_MIDDLE_ENDIAN
 
-AC_ARG_ENABLE(native-ethr-impls,
-	      AS_HELP_STRING([--disable-native-ethr-impls],
-                             [disable native ethread implementations]),
-[ case "$enableval" in
-    no) disable_native_ethr_impls=yes ;;
-    *)  disable_native_ethr_impls=no ;;
-  esac ], disable_native_ethr_impls=no)
-
-AC_ARG_ENABLE(x86-out-of-order,
-	      AS_HELP_STRING([--enable-x86-out-of-order],
-                             [enable x86/x84_64 out of order support (default disabled)]))
-
-test "X$disable_native_ethr_impls" = "Xyes" &&
-  AC_DEFINE(ETHR_DISABLE_NATIVE_IMPLS, 1, [Define if you want to disable native ethread implementations])
-
-AC_ARG_ENABLE(prefer-gcc-native-ethr-impls,
-	      AS_HELP_STRING([--enable-prefer-gcc-native-ethr-impls],
-			     [prefer gcc native ethread implementations]),
-[ case "$enableval" in
-    yes) enable_prefer_gcc_native_ethr_impls=yes ;;
-    *)  enable_prefer_gcc_native_ethr_impls=no ;;
-  esac ], enable_prefer_gcc_native_ethr_impls=no)
-
-test $enable_prefer_gcc_native_ethr_impls = yes &&
-  AC_DEFINE(ETHR_PREFER_GCC_NATIVE_IMPLS, 1, [Define if you prefer gcc native ethread implementations])
-
-AC_ARG_WITH(libatomic_ops,
-	    AS_HELP_STRING([--with-libatomic_ops=PATH],
-			   [specify and prefer usage of libatomic_ops in the ethread library]))
-
-AC_ARG_WITH(with_sparc_memory_order,
-	    AS_HELP_STRING([--with-sparc-memory-order=TSO|PSO|RMO],
-			   [specify sparc memory order (defaults to RMO)]))
-
 ETHR_X86_SSE2_ASM=no
 case "$GCC-$ac_cv_sizeof_void_p-$host_cpu" in
   yes-4-i86pc | yes-4-i*86 | yes-4-x86_64 | yes-4-amd64)
diff --git a/configure.in b/configure.in
index c0994245e8..4b3884864c 100644
--- a/configure.in
+++ b/configure.in
@@ -419,6 +419,7 @@ if test "$files" != "$pattern" || test -f erts/CONF_INFO; then
   echo '**********************  APPLICATIONS INFORMATION  *******************'
   echo '*********************************************************************'
   echo
+  test "$files" != "$pattern" || files=""
   test ! -f erts/CONF_INFO || files="$files erts/CONF_INFO"
   for infofile in $files; do
     app=`dirname $infofile`; app=`basename $app`
diff --git a/erts/aclocal.m4 b/erts/aclocal.m4
index 25f40944e7..aeb31fa58a 100644
--- a/erts/aclocal.m4
+++ b/erts/aclocal.m4
@@ -954,6 +954,40 @@ dnl
 AC_DEFUN(ERL_FIND_ETHR_LIB,
 [
 
+AC_ARG_ENABLE(native-ethr-impls,
+	      AS_HELP_STRING([--disable-native-ethr-impls],
+                             [disable native ethread implementations]),
+[ case "$enableval" in
+    no) disable_native_ethr_impls=yes ;;
+    *)  disable_native_ethr_impls=no ;;
+  esac ], disable_native_ethr_impls=no)
+
+test "X$disable_native_ethr_impls" = "Xyes" &&
+  AC_DEFINE(ETHR_DISABLE_NATIVE_IMPLS, 1, [Define if you want to disable native ethread implementations])
+
+AC_ARG_ENABLE(x86-out-of-order,
+	      AS_HELP_STRING([--enable-x86-out-of-order],
+                             [enable x86/x84_64 out of order support (default disabled)]))
+
+AC_ARG_ENABLE(prefer-gcc-native-ethr-impls,
+	      AS_HELP_STRING([--enable-prefer-gcc-native-ethr-impls],
+			     [prefer gcc native ethread implementations]),
+[ case "$enableval" in
+    yes) enable_prefer_gcc_native_ethr_impls=yes ;;
+    *)  enable_prefer_gcc_native_ethr_impls=no ;;
+  esac ], enable_prefer_gcc_native_ethr_impls=no)
+
+test $enable_prefer_gcc_native_ethr_impls = yes &&
+  AC_DEFINE(ETHR_PREFER_GCC_NATIVE_IMPLS, 1, [Define if you prefer gcc native ethread implementations])
+
+AC_ARG_WITH(libatomic_ops,
+	    AS_HELP_STRING([--with-libatomic_ops=PATH],
+			   [specify and prefer usage of libatomic_ops in the ethread library]))
+
+AC_ARG_WITH(with_sparc_memory_order,
+	    AS_HELP_STRING([--with-sparc-memory-order=TSO|PSO|RMO],
+			   [specify sparc memory order (defaults to RMO)]))
+
 LM_CHECK_THR_LIB
 ERL_INTERNAL_LIBS
 
@@ -1003,40 +1037,44 @@ case "$THR_LIB_NAME" in
 
 	AC_DEFINE(ETHR_WIN32_THREADS, 1, [Define if you have win32 threads])
 
-	ETHR_CHK_INTERLOCKED([_InterlockedDecrement], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT, 1, [Define if you have _InterlockedDecrement()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedDecrement_rel], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT_REL, 1, [Define if you have _InterlockedDecrement_rel()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedIncrement], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT, 1, [Define if you have _InterlockedIncrement()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedIncrement_acq], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT_ACQ, 1, [Define if you have _InterlockedIncrement_acq()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD, 1, [Define if you have _InterlockedExchangeAdd()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd_acq], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD_ACQ, 1, [Define if you have _InterlockedExchangeAdd_acq()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedAnd], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDAND, 1, [Define if you have _InterlockedAnd()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedOr], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDOR, 1, [Define if you have _InterlockedOr()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedExchange], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGE, 1, [Define if you have _InterlockedExchange()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange], [3], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE, 1, [Define if you have _InterlockedCompareExchange()]))
-	test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
-	ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange_acq], [3], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE_ACQ, 1, [Define if you have _InterlockedCompareExchange_acq()]))
-	test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
-	ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange_rel], [3], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE_REL, 1, [Define if you have _InterlockedCompareExchange_rel()]))
-	test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
-
-	ETHR_CHK_INTERLOCKED([_InterlockedDecrement64], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT64, 1, [Define if you have _InterlockedDecrement64()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedDecrement64_rel], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT64_REL, 1, [Define if you have _InterlockedDecrement64_rel()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedIncrement64], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT64, 1, [Define if you have _InterlockedIncrement64()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedIncrement64_acq], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT64_ACQ, 1, [Define if you have _InterlockedIncrement64_acq()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD64, 1, [Define if you have _InterlockedExchangeAdd64()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd64_acq], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD64_ACQ, 1, [Define if you have _InterlockedExchangeAdd64_acq()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedAnd64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDAND64, 1, [Define if you have _InterlockedAnd64()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedOr64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDOR64, 1, [Define if you have _InterlockedOr64()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedExchange64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGE64, 1, [Define if you have _InterlockedExchange64()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange64], [3], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE64, 1, [Define if you have _InterlockedCompareExchange64()]))
-	test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
-	ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange64_acq], [3], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE64_ACQ, 1, [Define if you have _InterlockedCompareExchange64_acq()]))
-	test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
-	ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange64_rel], [3], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE64_REL, 1, [Define if you have _InterlockedCompareExchange64_rel()]))
-	test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
-
-	ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange128], [4], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE128, 1, [Define if you have _InterlockedCompareExchange128()]))
-
+	if test "X$disable_native_ethr_impls" = "Xyes"; then
+	    have_interlocked_op=no
+	    ethr_have_native_atomics=no
+	else
+	    ETHR_CHK_INTERLOCKED([_InterlockedDecrement], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT, 1, [Define if you have _InterlockedDecrement()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedDecrement_rel], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT_REL, 1, [Define if you have _InterlockedDecrement_rel()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedIncrement], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT, 1, [Define if you have _InterlockedIncrement()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedIncrement_acq], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT_ACQ, 1, [Define if you have _InterlockedIncrement_acq()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD, 1, [Define if you have _InterlockedExchangeAdd()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd_acq], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD_ACQ, 1, [Define if you have _InterlockedExchangeAdd_acq()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedAnd], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDAND, 1, [Define if you have _InterlockedAnd()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedOr], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDOR, 1, [Define if you have _InterlockedOr()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedExchange], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGE, 1, [Define if you have _InterlockedExchange()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange], [3], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE, 1, [Define if you have _InterlockedCompareExchange()]))
+	    test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
+	    ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange_acq], [3], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE_ACQ, 1, [Define if you have _InterlockedCompareExchange_acq()]))
+	    test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
+	    ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange_rel], [3], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE_REL, 1, [Define if you have _InterlockedCompareExchange_rel()]))
+	    test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
+
+	    ETHR_CHK_INTERLOCKED([_InterlockedDecrement64], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT64, 1, [Define if you have _InterlockedDecrement64()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedDecrement64_rel], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT64_REL, 1, [Define if you have _InterlockedDecrement64_rel()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedIncrement64], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT64, 1, [Define if you have _InterlockedIncrement64()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedIncrement64_acq], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT64_ACQ, 1, [Define if you have _InterlockedIncrement64_acq()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD64, 1, [Define if you have _InterlockedExchangeAdd64()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd64_acq], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD64_ACQ, 1, [Define if you have _InterlockedExchangeAdd64_acq()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedAnd64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDAND64, 1, [Define if you have _InterlockedAnd64()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedOr64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDOR64, 1, [Define if you have _InterlockedOr64()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedExchange64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGE64, 1, [Define if you have _InterlockedExchange64()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange64], [3], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE64, 1, [Define if you have _InterlockedCompareExchange64()]))
+	    test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
+	    ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange64_acq], [3], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE64_ACQ, 1, [Define if you have _InterlockedCompareExchange64_acq()]))
+	    test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
+	    ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange64_rel], [3], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE64_REL, 1, [Define if you have _InterlockedCompareExchange64_rel()]))
+	    test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
+
+	    ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange128], [4], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE128, 1, [Define if you have _InterlockedCompareExchange128()]))
+	fi
 	test "$ethr_have_native_atomics" = "yes" && ethr_have_native_spinlock=yes
 	;;
 
@@ -1303,93 +1341,98 @@ case "$THR_LIB_NAME" in
 	    int128="__int128_t"
 	fi
 
-	ETHR_CHK_SYNC_OP([__sync_val_compare_and_swap], [3], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_VAL_COMPARE_AND_SWAP32, 1, [Define if you have __sync_val_compare_and_swap() for 32-bit integers]))
-	test "$have_sync_op" = "yes" && ethr_have_native_atomics=yes
-	ETHR_CHK_SYNC_OP([__sync_add_and_fetch], [2], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_ADD_AND_FETCH32, 1, [Define if you have __sync_add_and_fetch() for 32-bit integers]))
-	ETHR_CHK_SYNC_OP([__sync_fetch_and_and], [2], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_AND32, 1, [Define if you have __sync_fetch_and_and() for 32-bit integers]))
-	ETHR_CHK_SYNC_OP([__sync_fetch_and_or], [2], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_OR32, 1, [Define if you have __sync_fetch_and_or() for 32-bit integers]))
+	if test "X$disable_native_ethr_impls" = "Xyes"; then
+	    ethr_have_native_atomics=no
+	else
+	    ETHR_CHK_SYNC_OP([__sync_val_compare_and_swap], [3], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_VAL_COMPARE_AND_SWAP32, 1, [Define if you have __sync_val_compare_and_swap() for 32-bit integers]))
+	    test "$have_sync_op" = "yes" && ethr_have_native_atomics=yes
+	    ETHR_CHK_SYNC_OP([__sync_add_and_fetch], [2], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_ADD_AND_FETCH32, 1, [Define if you have __sync_add_and_fetch() for 32-bit integers]))
+	    ETHR_CHK_SYNC_OP([__sync_fetch_and_and], [2], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_AND32, 1, [Define if you have __sync_fetch_and_and() for 32-bit integers]))
+	    ETHR_CHK_SYNC_OP([__sync_fetch_and_or], [2], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_OR32, 1, [Define if you have __sync_fetch_and_or() for 32-bit integers]))
+
+	    ETHR_CHK_SYNC_OP([__sync_val_compare_and_swap], [3], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_VAL_COMPARE_AND_SWAP64, 1, [Define if you have __sync_val_compare_and_swap() for 64-bit integers]))
+	    test "$have_sync_op" = "yes" && ethr_have_native_atomics=yes
+	    ETHR_CHK_SYNC_OP([__sync_add_and_fetch], [2], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_ADD_AND_FETCH64, 1, [Define if you have __sync_add_and_fetch() for 64-bit integers]))
+	    ETHR_CHK_SYNC_OP([__sync_fetch_and_and], [2], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_AND64, 1, [Define if you have __sync_fetch_and_and() for 64-bit integers]))
+	    ETHR_CHK_SYNC_OP([__sync_fetch_and_or], [2], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_OR64, 1, [Define if you have __sync_fetch_and_or() for 64-bit integers]))
+
+	    if test $int128 != no; then
+	        ETHR_CHK_SYNC_OP([__sync_val_compare_and_swap], [3], [128], [$int128], AC_DEFINE(ETHR_HAVE___SYNC_VAL_COMPARE_AND_SWAP128, 1, [Define if you have __sync_val_compare_and_swap() for 128-bit integers]))
+	    fi
 
-	ETHR_CHK_SYNC_OP([__sync_val_compare_and_swap], [3], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_VAL_COMPARE_AND_SWAP64, 1, [Define if you have __sync_val_compare_and_swap() for 64-bit integers]))
-	test "$have_sync_op" = "yes" && ethr_have_native_atomics=yes
-	ETHR_CHK_SYNC_OP([__sync_add_and_fetch], [2], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_ADD_AND_FETCH64, 1, [Define if you have __sync_add_and_fetch() for 64-bit integers]))
-	ETHR_CHK_SYNC_OP([__sync_fetch_and_and], [2], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_AND64, 1, [Define if you have __sync_fetch_and_and() for 64-bit integers]))
-	ETHR_CHK_SYNC_OP([__sync_fetch_and_or], [2], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_OR64, 1, [Define if you have __sync_fetch_and_or() for 64-bit integers]))
+	    AC_MSG_CHECKING([for a usable libatomic_ops implementation])
+	    case "x$with_libatomic_ops" in
+	        xno | xyes | x)
+	    	    libatomic_ops_include=
+	    	    ;;
+	        *)
+	    	    if test -d "${with_libatomic_ops}/include"; then
+	    	        libatomic_ops_include="-I$with_libatomic_ops/include"
+	    	        CPPFLAGS="$CPPFLAGS $libatomic_ops_include"
+	    	    else
+	    	        AC_MSG_ERROR([libatomic_ops include directory $with_libatomic_ops/include not found])
+	    	    fi;;
+	    esac
+	    ethr_have_libatomic_ops=no
+	    AC_TRY_LINK([#include "atomic_ops.h"],
+	    	        [
+	    	    	    volatile AO_t x;
+	    	    	    AO_t y;
+	    	    	    int z;
+
+	    	    	    AO_nop_full();
+	    	    	    AO_store(&x, (AO_t) 0);
+	    	    	    z = AO_load(&x);
+	    	    	    z = AO_compare_and_swap_full(&x, (AO_t) 0, (AO_t) 1);
+	    	        ],
+	    	        [ethr_have_native_atomics=yes
+	    	         ethr_have_libatomic_ops=yes])
+	    AC_MSG_RESULT([$ethr_have_libatomic_ops])
+	    if test $ethr_have_libatomic_ops = yes; then
+	        AC_CHECK_SIZEOF(AO_t, ,
+	    	    	        [
+	    	    	    	    #include <stdio.h>
+	    	    	    	    #include "atomic_ops.h"
+	    	    	        ])
+	        AC_DEFINE_UNQUOTED(ETHR_SIZEOF_AO_T, $ac_cv_sizeof_AO_t, [Define to the size of AO_t if libatomic_ops is used])
+
+	        AC_DEFINE(ETHR_HAVE_LIBATOMIC_OPS, 1, [Define if you have libatomic_ops atomic operations])
+	        if test "x$with_libatomic_ops" != "xno" && test "x$with_libatomic_ops" != "x"; then
+	    	    AC_DEFINE(ETHR_PREFER_LIBATOMIC_OPS_NATIVE_IMPLS, 1, [Define if you prefer libatomic_ops native ethread implementations])
+	        fi
+	        ETHR_DEFS="$ETHR_DEFS $libatomic_ops_include"
+	    elif test "x$with_libatomic_ops" != "xno" && test "x$with_libatomic_ops" != "x"; then
+	        AC_MSG_ERROR([No usable libatomic_ops implementation found])
+	    fi
 
-	if test $int128 != no; then
-	    ETHR_CHK_SYNC_OP([__sync_val_compare_and_swap], [3], [128], [$int128], AC_DEFINE(ETHR_HAVE___SYNC_VAL_COMPARE_AND_SWAP128, 1, [Define if you have __sync_val_compare_and_swap() for 128-bit integers]))
-	fi
+	    case "$host_cpu" in
+	      sparc | sun4u | sparc64 | sun4v)
+	    	    case "$with_sparc_memory_order" in
+	    	        "TSO")
+	    	    	    AC_DEFINE(ETHR_SPARC_TSO, 1, [Define if only run in Sparc TSO mode]);;
+	    	        "PSO")
+	    	    	    AC_DEFINE(ETHR_SPARC_PSO, 1, [Define if only run in Sparc PSO, or TSO mode]);;
+	    	        "RMO"|"")
+	    	    	    AC_DEFINE(ETHR_SPARC_RMO, 1, [Define if run in Sparc RMO, PSO, or TSO mode]);;
+	    	        *)
+	    	    	    AC_MSG_ERROR([Unsupported Sparc memory order: $with_sparc_memory_order]);;
+	    	    esac
+	    	    ethr_have_native_atomics=yes;; 
+	      i86pc | i*86 | x86_64 | amd64)
+	    	    if test "$enable_x86_out_of_order" = "yes"; then
+	    	    	    AC_DEFINE(ETHR_X86_OUT_OF_ORDER, 1, [Define if x86/x86_64 out of order instructions should be synchronized])
+	    	    fi
+	    	    ethr_have_native_atomics=yes;;
+	      macppc | ppc | "Power Macintosh")
+	    	    ethr_have_native_atomics=yes;;
+	      tile)
+	    	    ethr_have_native_atomics=yes;;
+	      *)
+	    	    ;;
+	    esac
 
-	AC_MSG_CHECKING([for a usable libatomic_ops implementation])
-	case "x$with_libatomic_ops" in
-	    xno | xyes | x)
-		libatomic_ops_include=
-		;;
-	    *)
-		if test -d "${with_libatomic_ops}/include"; then
-		    libatomic_ops_include="-I$with_libatomic_ops/include"
-		    CPPFLAGS="$CPPFLAGS $libatomic_ops_include"
-		else
-		    AC_MSG_ERROR([libatomic_ops include directory $with_libatomic_ops/include not found])
-		fi;;
-	esac
-	ethr_have_libatomic_ops=no
-	AC_TRY_LINK([#include "atomic_ops.h"],
-		    [
-			volatile AO_t x;
-			AO_t y;
-			int z;
-
-			AO_nop_full();
-			AO_store(&x, (AO_t) 0);
-			z = AO_load(&x);
-			z = AO_compare_and_swap_full(&x, (AO_t) 0, (AO_t) 1);
-		    ],
-		    [ethr_have_native_atomics=yes
-		     ethr_have_libatomic_ops=yes])
-	AC_MSG_RESULT([$ethr_have_libatomic_ops])
-	if test $ethr_have_libatomic_ops = yes; then
-	    AC_CHECK_SIZEOF(AO_t, ,
-			    [
-				#include <stdio.h>
-				#include "atomic_ops.h"
-			    ])
-	    AC_DEFINE_UNQUOTED(ETHR_SIZEOF_AO_T, $ac_cv_sizeof_AO_t, [Define to the size of AO_t if libatomic_ops is used])
-
-	    AC_DEFINE(ETHR_HAVE_LIBATOMIC_OPS, 1, [Define if you have libatomic_ops atomic operations])
-	    if test "x$with_libatomic_ops" != "xno" && test "x$with_libatomic_ops" != "x"; then
-		AC_DEFINE(ETHR_PREFER_LIBATOMIC_OPS_NATIVE_IMPLS, 1, [Define if you prefer libatomic_ops native ethread implementations])
-	    fi
-	    ETHR_DEFS="$ETHR_DEFS $libatomic_ops_include"
-	elif test "x$with_libatomic_ops" != "xno" && test "x$with_libatomic_ops" != "x"; then
-	    AC_MSG_ERROR([No usable libatomic_ops implementation found])
 	fi
 
-	case "$host_cpu" in
-	  sparc | sun4u | sparc64 | sun4v)
-		case "$with_sparc_memory_order" in
-		    "TSO")
-			AC_DEFINE(ETHR_SPARC_TSO, 1, [Define if only run in Sparc TSO mode]);;
-		    "PSO")
-			AC_DEFINE(ETHR_SPARC_PSO, 1, [Define if only run in Sparc PSO, or TSO mode]);;
-		    "RMO"|"")
-			AC_DEFINE(ETHR_SPARC_RMO, 1, [Define if run in Sparc RMO, PSO, or TSO mode]);;
-		    *)
-			AC_MSG_ERROR([Unsupported Sparc memory order: $with_sparc_memory_order]);;
-		esac
-		ethr_have_native_atomics=yes;; 
-	  i86pc | i*86 | x86_64 | amd64)
-		if test "$enable_x86_out_of_order" = "yes"; then
-			AC_DEFINE(ETHR_X86_OUT_OF_ORDER, 1, [Define if x86/x86_64 out of order instructions should be synchronized])
-		fi
-		ethr_have_native_atomics=yes;;
-	  macppc | ppc | "Power Macintosh")
-		ethr_have_native_atomics=yes;;
-	  tile)
-		ethr_have_native_atomics=yes;;
-	  *)
-		;;
-	esac
-
 	test ethr_have_native_atomics = "yes" && ethr_have_native_spinlock=yes
 
 	dnl Restore LIBS
@@ -1451,40 +1494,6 @@ esac
 
 AC_C_DOUBLE_MIDDLE_ENDIAN
 
-AC_ARG_ENABLE(native-ethr-impls,
-	      AS_HELP_STRING([--disable-native-ethr-impls],
-                             [disable native ethread implementations]),
-[ case "$enableval" in
-    no) disable_native_ethr_impls=yes ;;
-    *)  disable_native_ethr_impls=no ;;
-  esac ], disable_native_ethr_impls=no)
-
-AC_ARG_ENABLE(x86-out-of-order,
-	      AS_HELP_STRING([--enable-x86-out-of-order],
-                             [enable x86/x84_64 out of order support (default disabled)]))
-
-test "X$disable_native_ethr_impls" = "Xyes" &&
-  AC_DEFINE(ETHR_DISABLE_NATIVE_IMPLS, 1, [Define if you want to disable native ethread implementations])
-
-AC_ARG_ENABLE(prefer-gcc-native-ethr-impls,
-	      AS_HELP_STRING([--enable-prefer-gcc-native-ethr-impls],
-			     [prefer gcc native ethread implementations]),
-[ case "$enableval" in
-    yes) enable_prefer_gcc_native_ethr_impls=yes ;;
-    *)  enable_prefer_gcc_native_ethr_impls=no ;;
-  esac ], enable_prefer_gcc_native_ethr_impls=no)
-
-test $enable_prefer_gcc_native_ethr_impls = yes &&
-  AC_DEFINE(ETHR_PREFER_GCC_NATIVE_IMPLS, 1, [Define if you prefer gcc native ethread implementations])
-
-AC_ARG_WITH(libatomic_ops,
-	    AS_HELP_STRING([--with-libatomic_ops=PATH],
-			   [specify and prefer usage of libatomic_ops in the ethread library]))
-
-AC_ARG_WITH(with_sparc_memory_order,
-	    AS_HELP_STRING([--with-sparc-memory-order=TSO|PSO|RMO],
-			   [specify sparc memory order (defaults to RMO)]))
-
 ETHR_X86_SSE2_ASM=no
 case "$GCC-$ac_cv_sizeof_void_p-$host_cpu" in
   yes-4-i86pc | yes-4-i*86 | yes-4-x86_64 | yes-4-amd64)
diff --git a/erts/configure.in b/erts/configure.in
index b056ba44e2..2f624e5853 100644
--- a/erts/configure.in
+++ b/erts/configure.in
@@ -150,6 +150,14 @@ AS_HELP_STRING([--disable-smp-support], [disable smp support]),
     *)  enable_smp_support=yes ;;
   esac ], enable_smp_support=unknown)
 
+AC_ARG_ENABLE(smp-require-native-atomics,
+	      AS_HELP_STRING([--disable-smp-require-native-atomics],
+                             [disable the SMP requirement of a native atomic implementation]),
+[ case "$enableval" in
+    no) smp_require_native_atomics=no ;;
+    *)  smp_require_native_atomics=yes ;;
+  esac ], smp_require_native_atomics=yes)
+
 AC_ARG_WITH(termcap,
 AS_HELP_STRING([--with-termcap], [use termcap (default)])
 AS_HELP_STRING([--without-termcap],
@@ -1043,11 +1051,15 @@ if test $ERTS_BUILD_SMP_EMU = yes; then
 
 	AC_DEFINE(ERTS_HAVE_SMP_EMU, 1, [Define if the smp emulator is built])
 
-	case "$ethr_have_native_atomics-$ethr_have_native_spinlock" in
+	case "$ethr_have_native_atomics-$smp_require_native_atomics-$ethr_have_native_spinlock" in
 	  yes-*)
 		;;
 
-	  no-yes)
+	  no-yes-*)
+		AC_MSG_ERROR([No native atomic implementation found. See INSTALL.md for more information.])
+		;;
+
+	  no-no-yes)
 
 		test -f "$ERL_TOP/erts/CONF_INFO" ||
 		    echo "" > "$ERL_TOP/erts/CONF_INFO"
@@ -1056,12 +1068,13 @@ if test $ERTS_BUILD_SMP_EMU = yes; then
                  No native atomic implementation available.
                  Fallbacks implemented using spinlocks will be
                  used. Note that the performance of the SMP
-                 runtime system will suffer due to this.
+                 runtime system will suffer immensely due to
+		 this.
 
 EOF
 		;;
 
-	  no-no)
+	  no-no-no)
 
 		test -f "$ERL_TOP/erts/CONF_INFO" ||
 		    echo "" > "$ERL_TOP/erts/CONF_INFO"
@@ -1071,7 +1084,7 @@ EOF
                  spinlock implementation available. Fallbacks
                  implemented using mutexes will be used. Note
                  that the performance of the SMP runtime system
-                 will suffer much due to this.
+                 will suffer immensely due to this.
 
 EOF
 		;;
diff --git a/erts/emulator/beam/beam_emu.c b/erts/emulator/beam/beam_emu.c
index 5781009f58..da36c4437e 100644
--- a/erts/emulator/beam/beam_emu.c
+++ b/erts/emulator/beam/beam_emu.c
@@ -6256,3 +6256,12 @@ erts_current_reductions(Process *current, Process *p)
     }
 }
 
+int
+erts_beam_jump_table(void)
+{
+#if defined(NO_JUMP_TABLE)
+    return 0;
+#else
+    return 1;
+#endif
+}
diff --git a/erts/emulator/beam/erl_bif_info.c b/erts/emulator/beam/erl_bif_info.c
index 74a37f374d..e4fbd21c0e 100755
--- a/erts/emulator/beam/erl_bif_info.c
+++ b/erts/emulator/beam/erl_bif_info.c
@@ -2577,74 +2577,14 @@ BIF_RETTYPE system_info_1(BIF_ALIST_1)
 	hp = hsz ? HAlloc(BIF_P, hsz) : NULL;
 	res = erts_bld_uint(&hp, NULL, erts_dist_buf_busy_limit);
 	BIF_RET(res);
-    } else if (ERTS_IS_ATOM_STR("print_ethread_info", BIF_ARG_1)) {
-#if defined(ETHR_NATIVE_ATOMIC32_IMPL) \
-    || defined(ETHR_NATIVE_ATOMIC64_IMPL) \
-    || defined(ETHR_NATIVE_DW_ATOMIC_IMPL)
-	int i;
-	char **str;
-#endif
-#ifdef ETHR_NATIVE_ATOMIC32_IMPL
-	erts_printf("32-bit native atomics: %s\n",
-		    ETHR_NATIVE_ATOMIC32_IMPL);
-	str = ethr_native_atomic32_ops();
-	for (i = 0; str[i]; i++)
-	    erts_printf("ethr_native_atomic32_%s()\n", str[i]);
-#endif
-#ifdef ETHR_NATIVE_ATOMIC64_IMPL
-	erts_printf("64-bit native atomics: %s\n",
-		    ETHR_NATIVE_ATOMIC64_IMPL);
-	str = ethr_native_atomic64_ops();
-	for (i = 0; str[i]; i++)
-	    erts_printf("ethr_native_atomic64_%s()\n", str[i]);
-#endif
-#ifdef ETHR_NATIVE_DW_ATOMIC_IMPL
-	if (ethr_have_native_dw_atomic()) {
-	    erts_printf("Double word native atomics: %s\n",
-			ETHR_NATIVE_DW_ATOMIC_IMPL);
-	    str = ethr_native_dw_atomic_ops();
-	    for (i = 0; str[i]; i++)
-		erts_printf("ethr_native_dw_atomic_%s()\n", str[i]);
-	    str = ethr_native_su_dw_atomic_ops();
-	    for (i = 0; str[i]; i++)
-		erts_printf("ethr_native_su_dw_atomic_%s()\n", str[i]);
-	}
-#endif
-#ifdef ETHR_NATIVE_SPINLOCK_IMPL
-	erts_printf("Native spin-locks: %s\n", ETHR_NATIVE_SPINLOCK_IMPL);
-#endif
-#ifdef ETHR_NATIVE_RWSPINLOCK_IMPL
-	erts_printf("Native rwspin-locks: %s\n", ETHR_NATIVE_RWSPINLOCK_IMPL);
-#endif
-#ifdef ETHR_X86_RUNTIME_CONF_HAVE_SSE2__
-	erts_printf("SSE2 support: %s\n", (ETHR_X86_RUNTIME_CONF_HAVE_SSE2__
-					   ? "yes" : "no"));
-#endif
-#ifdef ETHR_X86_OUT_OF_ORDER
-	erts_printf("x86"
-#ifdef ARCH_64
-		    "_64"
-#endif
-		    " out of order\n");
-#endif
-#ifdef ETHR_SPARC_TSO
-	erts_printf("Sparc TSO\n");
-#endif
-#ifdef ETHR_SPARC_PSO
-	erts_printf("Sparc PSO\n");
-#endif
-#ifdef ETHR_SPARC_RMO
-	erts_printf("Sparc RMO\n");
-#endif
-#if defined(ETHR_PPC_HAVE_LWSYNC)
-	erts_printf("Have lwsync instruction: yes\n");
-#elif defined(ETHR_PPC_HAVE_NO_LWSYNC)
-	erts_printf("Have lwsync instruction: no\n");
-#elif defined(ETHR_PPC_RUNTIME_CONF_HAVE_LWSYNC__)
-	erts_printf("Have lwsync instruction: %s (runtime test)\n",
-		    ETHR_PPC_RUNTIME_CONF_HAVE_LWSYNC__ ? "yes" : "no");
-#endif
-	BIF_RET(am_true);
+    } else if (ERTS_IS_ATOM_STR("ethread_info", BIF_ARG_1)) {
+	BIF_RET(erts_get_ethread_info(BIF_P));
+    }
+    else if (ERTS_IS_ATOM_STR("emu_args", BIF_ARG_1)) {
+	BIF_RET(erts_get_emu_args(BIF_P));
+    }
+    else if (ERTS_IS_ATOM_STR("beam_jump_table", BIF_ARG_1)) {
+	BIF_RET(erts_beam_jump_table() ? am_true : am_false);
     }
     else if (ERTS_IS_ATOM_STR("dynamic_trace", BIF_ARG_1)) {
 #if defined(USE_DTRACE)
diff --git a/erts/emulator/beam/erl_init.c b/erts/emulator/beam/erl_init.c
index 4bae3dfeb4..8d137df7ae 100644
--- a/erts/emulator/beam/erl_init.c
+++ b/erts/emulator/beam/erl_init.c
@@ -637,6 +637,8 @@ early_init(int *argc, char **argv) /*
     char envbuf[21]; /* enough for any 64-bit integer */
     size_t envbufsz;
 
+    erts_save_emu_args(*argc, argv);
+
     erts_sched_compact_load = 1;
     erts_printf_eterm_func = erts_printf_term;
     erts_disable_tolerant_timeofday = 0;
diff --git a/erts/emulator/beam/erl_utils.h b/erts/emulator/beam/erl_utils.h
index a2064bd8a3..80d29d554a 100644
--- a/erts/emulator/beam/erl_utils.h
+++ b/erts/emulator/beam/erl_utils.h
@@ -24,6 +24,8 @@
 #include "erl_smp.h"
 #include "erl_printf.h"
 
+struct process;
+
 typedef struct {
 #ifdef DEBUG
     int smp_api;
@@ -155,6 +157,9 @@ Uint32 block_hash(byte *, unsigned, Uint32);
 Uint32 make_hash2(Eterm);
 Uint32 make_hash(Eterm);
 
+void erts_save_emu_args(int argc, char **argv);
+Eterm erts_get_emu_args(struct process *c_p);
+Eterm erts_get_ethread_info(struct process * c_p);
 
 Eterm erts_bld_atom(Uint **hpp, Uint *szp, char *str);
 Eterm erts_bld_uint(Uint **hpp, Uint *szp, Uint ui);
diff --git a/erts/emulator/beam/global.h b/erts/emulator/beam/global.h
index 25aedc91c6..e5807b5ce6 100755
--- a/erts/emulator/beam/global.h
+++ b/erts/emulator/beam/global.h
@@ -1042,6 +1042,8 @@ extern erts_driver_t vanilla_driver;
 extern erts_driver_t spawn_driver;
 extern erts_driver_t fd_driver;
 
+int erts_beam_jump_table(void);
+
 /* Should maybe be placed in erl_message.h, but then we get an include mess. */
 ERTS_GLB_INLINE Eterm *
 erts_alloc_message_heap_state(Uint size,
diff --git a/erts/emulator/beam/utils.c b/erts/emulator/beam/utils.c
index 62caa67ce1..a285c1d62b 100644
--- a/erts/emulator/beam/utils.c
+++ b/erts/emulator/beam/utils.c
@@ -3466,6 +3466,291 @@ erts_free_read_env(void *value)
 	erts_free(ERTS_ALC_T_TMP, value);
 }
 
+
+typedef struct {
+    size_t sz;
+    char *ptr;
+} ErtsEmuArg;
+
+typedef struct {
+    int argc;
+    ErtsEmuArg *arg;
+    size_t no_bytes;
+} ErtsEmuArgs;
+
+ErtsEmuArgs saved_emu_args = {0};
+
+void
+erts_save_emu_args(int argc, char **argv)
+{
+#ifdef DEBUG
+    char *end_ptr;
+#endif
+    char *ptr;
+    int i;
+    size_t arg_sz[100];
+    size_t size;
+
+    ASSERT(!saved_emu_args.argc);
+
+    size = sizeof(ErtsEmuArg)*argc;
+    for (i = 0; i < argc; i++) {
+	size_t sz = sys_strlen(argv[i]);
+	if (i < sizeof(arg_sz)/sizeof(arg_sz[0]))
+	    arg_sz[i] = sz;
+	size += sz+1;
+    } 
+    ptr = (char *) malloc(size);
+#ifdef DEBUG
+    end_ptr = ptr + size;
+#endif
+    saved_emu_args.arg = (ErtsEmuArg *) ptr;
+    ptr += sizeof(ErtsEmuArg)*argc;
+    saved_emu_args.argc = argc;
+    saved_emu_args.no_bytes = 0;
+    for (i = 0; i < argc; i++) {
+	size_t sz;
+	if (i < sizeof(arg_sz)/sizeof(arg_sz[0]))
+	    sz = arg_sz[i];
+	else
+	    sz = sys_strlen(argv[i]);
+	saved_emu_args.arg[i].ptr = ptr;
+	saved_emu_args.arg[i].sz = sz;
+	saved_emu_args.no_bytes += sz;
+	ptr += sz+1;
+	sys_strcpy(saved_emu_args.arg[i].ptr, argv[i]);
+    }
+    ASSERT(ptr == end_ptr);
+}
+
+Eterm
+erts_get_emu_args(Process *c_p)
+{
+#ifdef DEBUG
+    Eterm *end_hp;
+#endif
+    int i;
+    Uint hsz;
+    Eterm *hp, res;
+
+    hsz = saved_emu_args.no_bytes*2;
+    hsz += saved_emu_args.argc*2;
+
+    hp = HAlloc(c_p, hsz);
+#ifdef DEBUG
+    end_hp = hp + hsz;
+#endif
+    res = NIL;
+
+    for (i = saved_emu_args.argc-1; i >= 0; i--) {
+    Eterm arg = buf_to_intlist(&hp,
+				   saved_emu_args.arg[i].ptr,
+				   saved_emu_args.arg[i].sz,
+				   NIL);
+	res = CONS(hp, arg, res);
+	hp += 2;
+    }
+
+    ASSERT(hp == end_hp);
+
+    return res;
+}
+
+
+Eterm
+erts_get_ethread_info(Process *c_p)
+{
+    Uint sz, *szp;
+    Eterm res, *hp, **hpp, *end_hp = NULL;
+
+    sz = 0;
+    szp = &sz;
+    hpp = NULL;
+
+    while (1) {
+	Eterm tup, list, name;
+#if defined(ETHR_NATIVE_ATOMIC32_IMPL)	  \
+    || defined(ETHR_NATIVE_ATOMIC64_IMPL)	\
+    || defined(ETHR_NATIVE_DW_ATOMIC_IMPL)
+	char buf[1024];
+	int i;
+	char **str;
+#endif
+
+	res = NIL;
+
+#ifdef ETHR_X86_MEMBAR_H__
+
+	tup = erts_bld_tuple(hpp, szp, 2,
+			     erts_bld_string(hpp, szp, "sse2"),
+#ifdef ETHR_X86_RUNTIME_CONF_HAVE_SSE2__
+			     erts_bld_string(hpp, szp,
+					     (ETHR_X86_RUNTIME_CONF_HAVE_SSE2__
+					      ? "yes" : "no"))
+#else
+			     erts_bld_string(hpp, szp, "yes")
+#endif
+	    );
+	res = erts_bld_cons(hpp, szp, tup, res);
+
+	tup = erts_bld_tuple(hpp, szp, 2,
+			     erts_bld_string(hpp, szp,
+					     "x86"
+#ifdef ARCH_64
+					     "_64"
+#endif
+					     " OOO"),
+			     erts_bld_string(hpp, szp,
+#ifdef ETHR_X86_OUT_OF_ORDER
+					     "yes"
+#else
+					     "no"
+#endif
+				 ));
+
+	res = erts_bld_cons(hpp, szp, tup, res);
+#endif
+
+#ifdef ETHR_SPARC_V9_MEMBAR_H__
+
+	tup = erts_bld_tuple(hpp, szp, 2,
+			     erts_bld_string(hpp, szp, "Sparc V9"),
+			     erts_bld_string(hpp, szp,
+#if defined(ETHR_SPARC_TSO)
+					     "TSO"
+#elif defined(ETHR_SPARC_PSO)
+					     "PSO"
+#elif defined(ETHR_SPARC_RMO)
+					     "RMO"
+#else
+					     "undefined"
+#endif
+				 ));
+
+	res = erts_bld_cons(hpp, szp, tup, res);
+
+#endif
+
+#ifdef ETHR_PPC_MEMBAR_H__
+
+	tup = erts_bld_tuple(hpp, szp, 2,
+			     erts_bld_string(hpp, szp, "lwsync"),
+			     erts_bld_string(hpp, szp,
+#if defined(ETHR_PPC_HAVE_LWSYNC)
+					     "yes"
+#elif defined(ETHR_PPC_HAVE_NO_LWSYNC)
+					     "no"
+#elif defined(ETHR_PPC_RUNTIME_CONF_HAVE_LWSYNC__)
+					     ETHR_PPC_RUNTIME_CONF_HAVE_LWSYNC__ ? "yes" : "no"
+#else
+					     "undefined"
+#endif
+				 ));
+
+	res = erts_bld_cons(hpp, szp, tup, res);
+
+#endif
+
+	tup = erts_bld_tuple(hpp, szp, 2,
+			     erts_bld_string(hpp, szp, "Native rw-spinlocks"),
+#ifdef ETHR_NATIVE_RWSPINLOCK_IMPL
+			     erts_bld_string(hpp, szp, ETHR_NATIVE_RWSPINLOCK_IMPL)
+#else
+			     erts_bld_string(hpp, szp, "no")
+#endif
+	    );
+	res = erts_bld_cons(hpp, szp, tup, res);
+
+	tup = erts_bld_tuple(hpp, szp, 2,
+			     erts_bld_string(hpp, szp, "Native spinlocks"),
+#ifdef ETHR_NATIVE_SPINLOCK_IMPL
+			     erts_bld_string(hpp, szp, ETHR_NATIVE_SPINLOCK_IMPL)
+#else
+			     erts_bld_string(hpp, szp, "no")
+#endif
+	    );
+	res = erts_bld_cons(hpp, szp, tup, res);
+
+
+	list = NIL;
+#ifdef ETHR_NATIVE_DW_ATOMIC_IMPL
+	if (ethr_have_native_dw_atomic()) {
+	    name = erts_bld_string(hpp, szp, ETHR_NATIVE_DW_ATOMIC_IMPL);
+	    str = ethr_native_dw_atomic_ops();
+	    for (i = 0; str[i]; i++) {
+		erts_snprintf(buf, sizeof(buf), "ethr_native_dw_atomic_%s()", str[i]);
+		list = erts_bld_cons(hpp, szp,
+				     erts_bld_string(hpp, szp, buf),
+				     list);
+	    }
+	    str = ethr_native_su_dw_atomic_ops();
+	    for (i = 0; str[i]; i++) {
+		erts_snprintf(buf, sizeof(buf), "ethr_native_su_dw_atomic_%s()", str[i]);
+		list = erts_bld_cons(hpp, szp,
+				     erts_bld_string(hpp, szp, buf),
+				     list);
+	    }
+	}
+	else 
+#endif
+	    name = erts_bld_string(hpp, szp, "no");
+
+	tup = erts_bld_tuple(hpp, szp, 3,
+			     erts_bld_string(hpp, szp, "Double word native atomics"),
+			     name,
+			     list);
+	res = erts_bld_cons(hpp, szp, tup, res);
+
+	list = NIL;
+#ifdef ETHR_NATIVE_ATOMIC64_IMPL
+	name = erts_bld_string(hpp, szp, ETHR_NATIVE_ATOMIC64_IMPL);
+	str = ethr_native_atomic64_ops();
+	for (i = 0; str[i]; i++) {
+	    erts_snprintf(buf, sizeof(buf), "ethr_native_atomic64_%s()", str[i]);
+	    list = erts_bld_cons(hpp, szp,
+				 erts_bld_string(hpp, szp, buf),
+				 list);
+	}
+#else
+	name = erts_bld_string(hpp, szp, "no");
+#endif
+	tup = erts_bld_tuple(hpp, szp, 3,
+			     erts_bld_string(hpp, szp, "64-bit native atomics"),
+			     name,
+			     list);
+	res = erts_bld_cons(hpp, szp, tup, res);
+
+	list = NIL;
+#ifdef ETHR_NATIVE_ATOMIC32_IMPL
+	name = erts_bld_string(hpp, szp, ETHR_NATIVE_ATOMIC32_IMPL);
+	str = ethr_native_atomic32_ops();
+	for (i = 0; str[i]; i++) {
+	    erts_snprintf(buf, sizeof(buf), "ethr_native_atomic32_%s()", str[i]);
+	    list = erts_bld_cons(hpp, szp,
+				erts_bld_string(hpp, szp, buf),
+				list);
+	}
+#else
+	name = erts_bld_string(hpp, szp, "no");
+#endif
+	tup = erts_bld_tuple(hpp, szp, 3,
+			     erts_bld_string(hpp, szp, "32-bit native atomics"),
+			     name,
+			     list);
+	res = erts_bld_cons(hpp, szp, tup, res);
+
+	if (hpp) {
+	    HRelease(c_p, end_hp, *hpp)
+	    return res;
+	}
+
+	hp = HAlloc(c_p, sz);
+	end_hp = hp + sz;
+	hpp = &hp;
+	szp = NULL;
+    }
+}
+
 /*
  * To be used to silence unused result warnings, but do not abuse it.
  */
diff --git a/erts/emulator/test/smoke_test_SUITE.erl b/erts/emulator/test/smoke_test_SUITE.erl
index 6f5c2080c0..10b7e16a74 100644
--- a/erts/emulator/test/smoke_test_SUITE.erl
+++ b/erts/emulator/test/smoke_test_SUITE.erl
@@ -26,14 +26,14 @@
 	 init_per_group/2,end_per_group/2, 
 	 init_per_testcase/2, end_per_testcase/2]).
 
--export([boot_combo/1]).
+-export([boot_combo/1, native_atomics/1, jump_table/1]).
 
 -define(DEFAULT_TIMEOUT, ?t:minutes(2)).
 
 suite() -> [{ct_hooks,[ts_install_cth]}].
 
 all() -> 
-    [boot_combo].
+    [boot_combo, native_atomics, jump_table].
 
 groups() -> 
     [].
@@ -105,6 +105,41 @@ boot_combo(Config) when is_list(Config) ->
 				end)
     end.
 
+native_atomics(Config) when is_list(Config) ->
+    NA32Key = "32-bit native atomics",
+    NA64Key = "64-bit native atomics",
+    DWNAKey = "Double word native atomics",
+    EthreadInfo = erlang:system_info(ethread_info),
+    ?t:format("~p~n", [EthreadInfo]),
+    {value,{NA32Key, NA32, _}} = lists:keysearch(NA32Key, 1, EthreadInfo),
+    {value,{NA64Key, NA64, _}} = lists:keysearch(NA64Key, 1, EthreadInfo),
+    {value,{DWNAKey, DWNA, _}} = lists:keysearch(DWNAKey, 1, EthreadInfo),
+    case {erlang:system_info(build_type), erlang:system_info(smp_support), NA32, NA64, DWNA} of
+	{opt, true, "no", "no", _} ->
+	    ?t:fail(optimized_smp_runtime_without_native_atomics);
+	{_, false, "no", "no", _} ->
+	    {comment, "No native atomics"};
+	_ ->
+	    {comment,
+	     NA32 ++ " 32-bit, "
+	     ++ NA64 ++ " 64-bit, and "
+	     ++ DWNA ++ " double word native atomics"}
+    end.
+
+jump_table(Config) when is_list(Config) ->
+    case erlang:system_info(beam_jump_table) of
+	true ->
+	    ok;
+	false ->
+	    case erlang:system_info(build_type) of
+		opt ->
+		    ?t:fail(optimized_without_beam_jump_table);
+		BT ->
+		    {comment, "No beam jump table, but build type is " ++ atom_to_list(BT)}
+	    end
+    end.
+	    
+
 %%%
 %%% Aux functions --------------------------------------------------------------
 %%%
diff --git a/lib/erl_interface/aclocal.m4 b/lib/erl_interface/aclocal.m4
index 25f40944e7..aeb31fa58a 100644
--- a/lib/erl_interface/aclocal.m4
+++ b/lib/erl_interface/aclocal.m4
@@ -954,6 +954,40 @@ dnl
 AC_DEFUN(ERL_FIND_ETHR_LIB,
 [
 
+AC_ARG_ENABLE(native-ethr-impls,
+	      AS_HELP_STRING([--disable-native-ethr-impls],
+                             [disable native ethread implementations]),
+[ case "$enableval" in
+    no) disable_native_ethr_impls=yes ;;
+    *)  disable_native_ethr_impls=no ;;
+  esac ], disable_native_ethr_impls=no)
+
+test "X$disable_native_ethr_impls" = "Xyes" &&
+  AC_DEFINE(ETHR_DISABLE_NATIVE_IMPLS, 1, [Define if you want to disable native ethread implementations])
+
+AC_ARG_ENABLE(x86-out-of-order,
+	      AS_HELP_STRING([--enable-x86-out-of-order],
+                             [enable x86/x84_64 out of order support (default disabled)]))
+
+AC_ARG_ENABLE(prefer-gcc-native-ethr-impls,
+	      AS_HELP_STRING([--enable-prefer-gcc-native-ethr-impls],
+			     [prefer gcc native ethread implementations]),
+[ case "$enableval" in
+    yes) enable_prefer_gcc_native_ethr_impls=yes ;;
+    *)  enable_prefer_gcc_native_ethr_impls=no ;;
+  esac ], enable_prefer_gcc_native_ethr_impls=no)
+
+test $enable_prefer_gcc_native_ethr_impls = yes &&
+  AC_DEFINE(ETHR_PREFER_GCC_NATIVE_IMPLS, 1, [Define if you prefer gcc native ethread implementations])
+
+AC_ARG_WITH(libatomic_ops,
+	    AS_HELP_STRING([--with-libatomic_ops=PATH],
+			   [specify and prefer usage of libatomic_ops in the ethread library]))
+
+AC_ARG_WITH(with_sparc_memory_order,
+	    AS_HELP_STRING([--with-sparc-memory-order=TSO|PSO|RMO],
+			   [specify sparc memory order (defaults to RMO)]))
+
 LM_CHECK_THR_LIB
 ERL_INTERNAL_LIBS
 
@@ -1003,40 +1037,44 @@ case "$THR_LIB_NAME" in
 
 	AC_DEFINE(ETHR_WIN32_THREADS, 1, [Define if you have win32 threads])
 
-	ETHR_CHK_INTERLOCKED([_InterlockedDecrement], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT, 1, [Define if you have _InterlockedDecrement()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedDecrement_rel], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT_REL, 1, [Define if you have _InterlockedDecrement_rel()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedIncrement], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT, 1, [Define if you have _InterlockedIncrement()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedIncrement_acq], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT_ACQ, 1, [Define if you have _InterlockedIncrement_acq()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD, 1, [Define if you have _InterlockedExchangeAdd()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd_acq], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD_ACQ, 1, [Define if you have _InterlockedExchangeAdd_acq()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedAnd], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDAND, 1, [Define if you have _InterlockedAnd()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedOr], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDOR, 1, [Define if you have _InterlockedOr()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedExchange], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGE, 1, [Define if you have _InterlockedExchange()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange], [3], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE, 1, [Define if you have _InterlockedCompareExchange()]))
-	test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
-	ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange_acq], [3], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE_ACQ, 1, [Define if you have _InterlockedCompareExchange_acq()]))
-	test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
-	ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange_rel], [3], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE_REL, 1, [Define if you have _InterlockedCompareExchange_rel()]))
-	test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
-
-	ETHR_CHK_INTERLOCKED([_InterlockedDecrement64], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT64, 1, [Define if you have _InterlockedDecrement64()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedDecrement64_rel], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT64_REL, 1, [Define if you have _InterlockedDecrement64_rel()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedIncrement64], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT64, 1, [Define if you have _InterlockedIncrement64()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedIncrement64_acq], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT64_ACQ, 1, [Define if you have _InterlockedIncrement64_acq()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD64, 1, [Define if you have _InterlockedExchangeAdd64()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd64_acq], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD64_ACQ, 1, [Define if you have _InterlockedExchangeAdd64_acq()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedAnd64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDAND64, 1, [Define if you have _InterlockedAnd64()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedOr64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDOR64, 1, [Define if you have _InterlockedOr64()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedExchange64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGE64, 1, [Define if you have _InterlockedExchange64()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange64], [3], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE64, 1, [Define if you have _InterlockedCompareExchange64()]))
-	test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
-	ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange64_acq], [3], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE64_ACQ, 1, [Define if you have _InterlockedCompareExchange64_acq()]))
-	test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
-	ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange64_rel], [3], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE64_REL, 1, [Define if you have _InterlockedCompareExchange64_rel()]))
-	test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
-
-	ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange128], [4], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE128, 1, [Define if you have _InterlockedCompareExchange128()]))
-
+	if test "X$disable_native_ethr_impls" = "Xyes"; then
+	    have_interlocked_op=no
+	    ethr_have_native_atomics=no
+	else
+	    ETHR_CHK_INTERLOCKED([_InterlockedDecrement], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT, 1, [Define if you have _InterlockedDecrement()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedDecrement_rel], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT_REL, 1, [Define if you have _InterlockedDecrement_rel()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedIncrement], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT, 1, [Define if you have _InterlockedIncrement()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedIncrement_acq], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT_ACQ, 1, [Define if you have _InterlockedIncrement_acq()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD, 1, [Define if you have _InterlockedExchangeAdd()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd_acq], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD_ACQ, 1, [Define if you have _InterlockedExchangeAdd_acq()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedAnd], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDAND, 1, [Define if you have _InterlockedAnd()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedOr], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDOR, 1, [Define if you have _InterlockedOr()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedExchange], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGE, 1, [Define if you have _InterlockedExchange()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange], [3], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE, 1, [Define if you have _InterlockedCompareExchange()]))
+	    test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
+	    ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange_acq], [3], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE_ACQ, 1, [Define if you have _InterlockedCompareExchange_acq()]))
+	    test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
+	    ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange_rel], [3], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE_REL, 1, [Define if you have _InterlockedCompareExchange_rel()]))
+	    test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
+
+	    ETHR_CHK_INTERLOCKED([_InterlockedDecrement64], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT64, 1, [Define if you have _InterlockedDecrement64()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedDecrement64_rel], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT64_REL, 1, [Define if you have _InterlockedDecrement64_rel()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedIncrement64], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT64, 1, [Define if you have _InterlockedIncrement64()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedIncrement64_acq], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT64_ACQ, 1, [Define if you have _InterlockedIncrement64_acq()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD64, 1, [Define if you have _InterlockedExchangeAdd64()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd64_acq], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD64_ACQ, 1, [Define if you have _InterlockedExchangeAdd64_acq()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedAnd64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDAND64, 1, [Define if you have _InterlockedAnd64()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedOr64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDOR64, 1, [Define if you have _InterlockedOr64()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedExchange64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGE64, 1, [Define if you have _InterlockedExchange64()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange64], [3], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE64, 1, [Define if you have _InterlockedCompareExchange64()]))
+	    test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
+	    ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange64_acq], [3], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE64_ACQ, 1, [Define if you have _InterlockedCompareExchange64_acq()]))
+	    test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
+	    ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange64_rel], [3], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE64_REL, 1, [Define if you have _InterlockedCompareExchange64_rel()]))
+	    test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
+
+	    ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange128], [4], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE128, 1, [Define if you have _InterlockedCompareExchange128()]))
+	fi
 	test "$ethr_have_native_atomics" = "yes" && ethr_have_native_spinlock=yes
 	;;
 
@@ -1303,93 +1341,98 @@ case "$THR_LIB_NAME" in
 	    int128="__int128_t"
 	fi
 
-	ETHR_CHK_SYNC_OP([__sync_val_compare_and_swap], [3], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_VAL_COMPARE_AND_SWAP32, 1, [Define if you have __sync_val_compare_and_swap() for 32-bit integers]))
-	test "$have_sync_op" = "yes" && ethr_have_native_atomics=yes
-	ETHR_CHK_SYNC_OP([__sync_add_and_fetch], [2], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_ADD_AND_FETCH32, 1, [Define if you have __sync_add_and_fetch() for 32-bit integers]))
-	ETHR_CHK_SYNC_OP([__sync_fetch_and_and], [2], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_AND32, 1, [Define if you have __sync_fetch_and_and() for 32-bit integers]))
-	ETHR_CHK_SYNC_OP([__sync_fetch_and_or], [2], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_OR32, 1, [Define if you have __sync_fetch_and_or() for 32-bit integers]))
+	if test "X$disable_native_ethr_impls" = "Xyes"; then
+	    ethr_have_native_atomics=no
+	else
+	    ETHR_CHK_SYNC_OP([__sync_val_compare_and_swap], [3], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_VAL_COMPARE_AND_SWAP32, 1, [Define if you have __sync_val_compare_and_swap() for 32-bit integers]))
+	    test "$have_sync_op" = "yes" && ethr_have_native_atomics=yes
+	    ETHR_CHK_SYNC_OP([__sync_add_and_fetch], [2], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_ADD_AND_FETCH32, 1, [Define if you have __sync_add_and_fetch() for 32-bit integers]))
+	    ETHR_CHK_SYNC_OP([__sync_fetch_and_and], [2], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_AND32, 1, [Define if you have __sync_fetch_and_and() for 32-bit integers]))
+	    ETHR_CHK_SYNC_OP([__sync_fetch_and_or], [2], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_OR32, 1, [Define if you have __sync_fetch_and_or() for 32-bit integers]))
+
+	    ETHR_CHK_SYNC_OP([__sync_val_compare_and_swap], [3], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_VAL_COMPARE_AND_SWAP64, 1, [Define if you have __sync_val_compare_and_swap() for 64-bit integers]))
+	    test "$have_sync_op" = "yes" && ethr_have_native_atomics=yes
+	    ETHR_CHK_SYNC_OP([__sync_add_and_fetch], [2], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_ADD_AND_FETCH64, 1, [Define if you have __sync_add_and_fetch() for 64-bit integers]))
+	    ETHR_CHK_SYNC_OP([__sync_fetch_and_and], [2], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_AND64, 1, [Define if you have __sync_fetch_and_and() for 64-bit integers]))
+	    ETHR_CHK_SYNC_OP([__sync_fetch_and_or], [2], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_OR64, 1, [Define if you have __sync_fetch_and_or() for 64-bit integers]))
+
+	    if test $int128 != no; then
+	        ETHR_CHK_SYNC_OP([__sync_val_compare_and_swap], [3], [128], [$int128], AC_DEFINE(ETHR_HAVE___SYNC_VAL_COMPARE_AND_SWAP128, 1, [Define if you have __sync_val_compare_and_swap() for 128-bit integers]))
+	    fi
 
-	ETHR_CHK_SYNC_OP([__sync_val_compare_and_swap], [3], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_VAL_COMPARE_AND_SWAP64, 1, [Define if you have __sync_val_compare_and_swap() for 64-bit integers]))
-	test "$have_sync_op" = "yes" && ethr_have_native_atomics=yes
-	ETHR_CHK_SYNC_OP([__sync_add_and_fetch], [2], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_ADD_AND_FETCH64, 1, [Define if you have __sync_add_and_fetch() for 64-bit integers]))
-	ETHR_CHK_SYNC_OP([__sync_fetch_and_and], [2], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_AND64, 1, [Define if you have __sync_fetch_and_and() for 64-bit integers]))
-	ETHR_CHK_SYNC_OP([__sync_fetch_and_or], [2], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_OR64, 1, [Define if you have __sync_fetch_and_or() for 64-bit integers]))
+	    AC_MSG_CHECKING([for a usable libatomic_ops implementation])
+	    case "x$with_libatomic_ops" in
+	        xno | xyes | x)
+	    	    libatomic_ops_include=
+	    	    ;;
+	        *)
+	    	    if test -d "${with_libatomic_ops}/include"; then
+	    	        libatomic_ops_include="-I$with_libatomic_ops/include"
+	    	        CPPFLAGS="$CPPFLAGS $libatomic_ops_include"
+	    	    else
+	    	        AC_MSG_ERROR([libatomic_ops include directory $with_libatomic_ops/include not found])
+	    	    fi;;
+	    esac
+	    ethr_have_libatomic_ops=no
+	    AC_TRY_LINK([#include "atomic_ops.h"],
+	    	        [
+	    	    	    volatile AO_t x;
+	    	    	    AO_t y;
+	    	    	    int z;
+
+	    	    	    AO_nop_full();
+	    	    	    AO_store(&x, (AO_t) 0);
+	    	    	    z = AO_load(&x);
+	    	    	    z = AO_compare_and_swap_full(&x, (AO_t) 0, (AO_t) 1);
+	    	        ],
+	    	        [ethr_have_native_atomics=yes
+	    	         ethr_have_libatomic_ops=yes])
+	    AC_MSG_RESULT([$ethr_have_libatomic_ops])
+	    if test $ethr_have_libatomic_ops = yes; then
+	        AC_CHECK_SIZEOF(AO_t, ,
+	    	    	        [
+	    	    	    	    #include <stdio.h>
+	    	    	    	    #include "atomic_ops.h"
+	    	    	        ])
+	        AC_DEFINE_UNQUOTED(ETHR_SIZEOF_AO_T, $ac_cv_sizeof_AO_t, [Define to the size of AO_t if libatomic_ops is used])
+
+	        AC_DEFINE(ETHR_HAVE_LIBATOMIC_OPS, 1, [Define if you have libatomic_ops atomic operations])
+	        if test "x$with_libatomic_ops" != "xno" && test "x$with_libatomic_ops" != "x"; then
+	    	    AC_DEFINE(ETHR_PREFER_LIBATOMIC_OPS_NATIVE_IMPLS, 1, [Define if you prefer libatomic_ops native ethread implementations])
+	        fi
+	        ETHR_DEFS="$ETHR_DEFS $libatomic_ops_include"
+	    elif test "x$with_libatomic_ops" != "xno" && test "x$with_libatomic_ops" != "x"; then
+	        AC_MSG_ERROR([No usable libatomic_ops implementation found])
+	    fi
 
-	if test $int128 != no; then
-	    ETHR_CHK_SYNC_OP([__sync_val_compare_and_swap], [3], [128], [$int128], AC_DEFINE(ETHR_HAVE___SYNC_VAL_COMPARE_AND_SWAP128, 1, [Define if you have __sync_val_compare_and_swap() for 128-bit integers]))
-	fi
+	    case "$host_cpu" in
+	      sparc | sun4u | sparc64 | sun4v)
+	    	    case "$with_sparc_memory_order" in
+	    	        "TSO")
+	    	    	    AC_DEFINE(ETHR_SPARC_TSO, 1, [Define if only run in Sparc TSO mode]);;
+	    	        "PSO")
+	    	    	    AC_DEFINE(ETHR_SPARC_PSO, 1, [Define if only run in Sparc PSO, or TSO mode]);;
+	    	        "RMO"|"")
+	    	    	    AC_DEFINE(ETHR_SPARC_RMO, 1, [Define if run in Sparc RMO, PSO, or TSO mode]);;
+	    	        *)
+	    	    	    AC_MSG_ERROR([Unsupported Sparc memory order: $with_sparc_memory_order]);;
+	    	    esac
+	    	    ethr_have_native_atomics=yes;; 
+	      i86pc | i*86 | x86_64 | amd64)
+	    	    if test "$enable_x86_out_of_order" = "yes"; then
+	    	    	    AC_DEFINE(ETHR_X86_OUT_OF_ORDER, 1, [Define if x86/x86_64 out of order instructions should be synchronized])
+	    	    fi
+	    	    ethr_have_native_atomics=yes;;
+	      macppc | ppc | "Power Macintosh")
+	    	    ethr_have_native_atomics=yes;;
+	      tile)
+	    	    ethr_have_native_atomics=yes;;
+	      *)
+	    	    ;;
+	    esac
 
-	AC_MSG_CHECKING([for a usable libatomic_ops implementation])
-	case "x$with_libatomic_ops" in
-	    xno | xyes | x)
-		libatomic_ops_include=
-		;;
-	    *)
-		if test -d "${with_libatomic_ops}/include"; then
-		    libatomic_ops_include="-I$with_libatomic_ops/include"
-		    CPPFLAGS="$CPPFLAGS $libatomic_ops_include"
-		else
-		    AC_MSG_ERROR([libatomic_ops include directory $with_libatomic_ops/include not found])
-		fi;;
-	esac
-	ethr_have_libatomic_ops=no
-	AC_TRY_LINK([#include "atomic_ops.h"],
-		    [
-			volatile AO_t x;
-			AO_t y;
-			int z;
-
-			AO_nop_full();
-			AO_store(&x, (AO_t) 0);
-			z = AO_load(&x);
-			z = AO_compare_and_swap_full(&x, (AO_t) 0, (AO_t) 1);
-		    ],
-		    [ethr_have_native_atomics=yes
-		     ethr_have_libatomic_ops=yes])
-	AC_MSG_RESULT([$ethr_have_libatomic_ops])
-	if test $ethr_have_libatomic_ops = yes; then
-	    AC_CHECK_SIZEOF(AO_t, ,
-			    [
-				#include <stdio.h>
-				#include "atomic_ops.h"
-			    ])
-	    AC_DEFINE_UNQUOTED(ETHR_SIZEOF_AO_T, $ac_cv_sizeof_AO_t, [Define to the size of AO_t if libatomic_ops is used])
-
-	    AC_DEFINE(ETHR_HAVE_LIBATOMIC_OPS, 1, [Define if you have libatomic_ops atomic operations])
-	    if test "x$with_libatomic_ops" != "xno" && test "x$with_libatomic_ops" != "x"; then
-		AC_DEFINE(ETHR_PREFER_LIBATOMIC_OPS_NATIVE_IMPLS, 1, [Define if you prefer libatomic_ops native ethread implementations])
-	    fi
-	    ETHR_DEFS="$ETHR_DEFS $libatomic_ops_include"
-	elif test "x$with_libatomic_ops" != "xno" && test "x$with_libatomic_ops" != "x"; then
-	    AC_MSG_ERROR([No usable libatomic_ops implementation found])
 	fi
 
-	case "$host_cpu" in
-	  sparc | sun4u | sparc64 | sun4v)
-		case "$with_sparc_memory_order" in
-		    "TSO")
-			AC_DEFINE(ETHR_SPARC_TSO, 1, [Define if only run in Sparc TSO mode]);;
-		    "PSO")
-			AC_DEFINE(ETHR_SPARC_PSO, 1, [Define if only run in Sparc PSO, or TSO mode]);;
-		    "RMO"|"")
-			AC_DEFINE(ETHR_SPARC_RMO, 1, [Define if run in Sparc RMO, PSO, or TSO mode]);;
-		    *)
-			AC_MSG_ERROR([Unsupported Sparc memory order: $with_sparc_memory_order]);;
-		esac
-		ethr_have_native_atomics=yes;; 
-	  i86pc | i*86 | x86_64 | amd64)
-		if test "$enable_x86_out_of_order" = "yes"; then
-			AC_DEFINE(ETHR_X86_OUT_OF_ORDER, 1, [Define if x86/x86_64 out of order instructions should be synchronized])
-		fi
-		ethr_have_native_atomics=yes;;
-	  macppc | ppc | "Power Macintosh")
-		ethr_have_native_atomics=yes;;
-	  tile)
-		ethr_have_native_atomics=yes;;
-	  *)
-		;;
-	esac
-
 	test ethr_have_native_atomics = "yes" && ethr_have_native_spinlock=yes
 
 	dnl Restore LIBS
@@ -1451,40 +1494,6 @@ esac
 
 AC_C_DOUBLE_MIDDLE_ENDIAN
 
-AC_ARG_ENABLE(native-ethr-impls,
-	      AS_HELP_STRING([--disable-native-ethr-impls],
-                             [disable native ethread implementations]),
-[ case "$enableval" in
-    no) disable_native_ethr_impls=yes ;;
-    *)  disable_native_ethr_impls=no ;;
-  esac ], disable_native_ethr_impls=no)
-
-AC_ARG_ENABLE(x86-out-of-order,
-	      AS_HELP_STRING([--enable-x86-out-of-order],
-                             [enable x86/x84_64 out of order support (default disabled)]))
-
-test "X$disable_native_ethr_impls" = "Xyes" &&
-  AC_DEFINE(ETHR_DISABLE_NATIVE_IMPLS, 1, [Define if you want to disable native ethread implementations])
-
-AC_ARG_ENABLE(prefer-gcc-native-ethr-impls,
-	      AS_HELP_STRING([--enable-prefer-gcc-native-ethr-impls],
-			     [prefer gcc native ethread implementations]),
-[ case "$enableval" in
-    yes) enable_prefer_gcc_native_ethr_impls=yes ;;
-    *)  enable_prefer_gcc_native_ethr_impls=no ;;
-  esac ], enable_prefer_gcc_native_ethr_impls=no)
-
-test $enable_prefer_gcc_native_ethr_impls = yes &&
-  AC_DEFINE(ETHR_PREFER_GCC_NATIVE_IMPLS, 1, [Define if you prefer gcc native ethread implementations])
-
-AC_ARG_WITH(libatomic_ops,
-	    AS_HELP_STRING([--with-libatomic_ops=PATH],
-			   [specify and prefer usage of libatomic_ops in the ethread library]))
-
-AC_ARG_WITH(with_sparc_memory_order,
-	    AS_HELP_STRING([--with-sparc-memory-order=TSO|PSO|RMO],
-			   [specify sparc memory order (defaults to RMO)]))
-
 ETHR_X86_SSE2_ASM=no
 case "$GCC-$ac_cv_sizeof_void_p-$host_cpu" in
   yes-4-i86pc | yes-4-i*86 | yes-4-x86_64 | yes-4-amd64)
diff --git a/lib/megaco/aclocal.m4 b/lib/megaco/aclocal.m4
index 25f40944e7..aeb31fa58a 100644
--- a/lib/megaco/aclocal.m4
+++ b/lib/megaco/aclocal.m4
@@ -954,6 +954,40 @@ dnl
 AC_DEFUN(ERL_FIND_ETHR_LIB,
 [
 
+AC_ARG_ENABLE(native-ethr-impls,
+	      AS_HELP_STRING([--disable-native-ethr-impls],
+                             [disable native ethread implementations]),
+[ case "$enableval" in
+    no) disable_native_ethr_impls=yes ;;
+    *)  disable_native_ethr_impls=no ;;
+  esac ], disable_native_ethr_impls=no)
+
+test "X$disable_native_ethr_impls" = "Xyes" &&
+  AC_DEFINE(ETHR_DISABLE_NATIVE_IMPLS, 1, [Define if you want to disable native ethread implementations])
+
+AC_ARG_ENABLE(x86-out-of-order,
+	      AS_HELP_STRING([--enable-x86-out-of-order],
+                             [enable x86/x84_64 out of order support (default disabled)]))
+
+AC_ARG_ENABLE(prefer-gcc-native-ethr-impls,
+	      AS_HELP_STRING([--enable-prefer-gcc-native-ethr-impls],
+			     [prefer gcc native ethread implementations]),
+[ case "$enableval" in
+    yes) enable_prefer_gcc_native_ethr_impls=yes ;;
+    *)  enable_prefer_gcc_native_ethr_impls=no ;;
+  esac ], enable_prefer_gcc_native_ethr_impls=no)
+
+test $enable_prefer_gcc_native_ethr_impls = yes &&
+  AC_DEFINE(ETHR_PREFER_GCC_NATIVE_IMPLS, 1, [Define if you prefer gcc native ethread implementations])
+
+AC_ARG_WITH(libatomic_ops,
+	    AS_HELP_STRING([--with-libatomic_ops=PATH],
+			   [specify and prefer usage of libatomic_ops in the ethread library]))
+
+AC_ARG_WITH(with_sparc_memory_order,
+	    AS_HELP_STRING([--with-sparc-memory-order=TSO|PSO|RMO],
+			   [specify sparc memory order (defaults to RMO)]))
+
 LM_CHECK_THR_LIB
 ERL_INTERNAL_LIBS
 
@@ -1003,40 +1037,44 @@ case "$THR_LIB_NAME" in
 
 	AC_DEFINE(ETHR_WIN32_THREADS, 1, [Define if you have win32 threads])
 
-	ETHR_CHK_INTERLOCKED([_InterlockedDecrement], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT, 1, [Define if you have _InterlockedDecrement()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedDecrement_rel], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT_REL, 1, [Define if you have _InterlockedDecrement_rel()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedIncrement], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT, 1, [Define if you have _InterlockedIncrement()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedIncrement_acq], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT_ACQ, 1, [Define if you have _InterlockedIncrement_acq()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD, 1, [Define if you have _InterlockedExchangeAdd()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd_acq], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD_ACQ, 1, [Define if you have _InterlockedExchangeAdd_acq()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedAnd], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDAND, 1, [Define if you have _InterlockedAnd()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedOr], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDOR, 1, [Define if you have _InterlockedOr()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedExchange], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGE, 1, [Define if you have _InterlockedExchange()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange], [3], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE, 1, [Define if you have _InterlockedCompareExchange()]))
-	test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
-	ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange_acq], [3], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE_ACQ, 1, [Define if you have _InterlockedCompareExchange_acq()]))
-	test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
-	ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange_rel], [3], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE_REL, 1, [Define if you have _InterlockedCompareExchange_rel()]))
-	test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
-
-	ETHR_CHK_INTERLOCKED([_InterlockedDecrement64], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT64, 1, [Define if you have _InterlockedDecrement64()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedDecrement64_rel], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT64_REL, 1, [Define if you have _InterlockedDecrement64_rel()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedIncrement64], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT64, 1, [Define if you have _InterlockedIncrement64()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedIncrement64_acq], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT64_ACQ, 1, [Define if you have _InterlockedIncrement64_acq()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD64, 1, [Define if you have _InterlockedExchangeAdd64()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd64_acq], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD64_ACQ, 1, [Define if you have _InterlockedExchangeAdd64_acq()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedAnd64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDAND64, 1, [Define if you have _InterlockedAnd64()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedOr64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDOR64, 1, [Define if you have _InterlockedOr64()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedExchange64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGE64, 1, [Define if you have _InterlockedExchange64()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange64], [3], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE64, 1, [Define if you have _InterlockedCompareExchange64()]))
-	test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
-	ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange64_acq], [3], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE64_ACQ, 1, [Define if you have _InterlockedCompareExchange64_acq()]))
-	test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
-	ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange64_rel], [3], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE64_REL, 1, [Define if you have _InterlockedCompareExchange64_rel()]))
-	test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
-
-	ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange128], [4], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE128, 1, [Define if you have _InterlockedCompareExchange128()]))
-
+	if test "X$disable_native_ethr_impls" = "Xyes"; then
+	    have_interlocked_op=no
+	    ethr_have_native_atomics=no
+	else
+	    ETHR_CHK_INTERLOCKED([_InterlockedDecrement], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT, 1, [Define if you have _InterlockedDecrement()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedDecrement_rel], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT_REL, 1, [Define if you have _InterlockedDecrement_rel()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedIncrement], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT, 1, [Define if you have _InterlockedIncrement()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedIncrement_acq], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT_ACQ, 1, [Define if you have _InterlockedIncrement_acq()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD, 1, [Define if you have _InterlockedExchangeAdd()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd_acq], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD_ACQ, 1, [Define if you have _InterlockedExchangeAdd_acq()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedAnd], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDAND, 1, [Define if you have _InterlockedAnd()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedOr], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDOR, 1, [Define if you have _InterlockedOr()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedExchange], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGE, 1, [Define if you have _InterlockedExchange()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange], [3], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE, 1, [Define if you have _InterlockedCompareExchange()]))
+	    test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
+	    ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange_acq], [3], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE_ACQ, 1, [Define if you have _InterlockedCompareExchange_acq()]))
+	    test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
+	    ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange_rel], [3], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE_REL, 1, [Define if you have _InterlockedCompareExchange_rel()]))
+	    test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
+
+	    ETHR_CHK_INTERLOCKED([_InterlockedDecrement64], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT64, 1, [Define if you have _InterlockedDecrement64()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedDecrement64_rel], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT64_REL, 1, [Define if you have _InterlockedDecrement64_rel()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedIncrement64], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT64, 1, [Define if you have _InterlockedIncrement64()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedIncrement64_acq], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT64_ACQ, 1, [Define if you have _InterlockedIncrement64_acq()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD64, 1, [Define if you have _InterlockedExchangeAdd64()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd64_acq], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD64_ACQ, 1, [Define if you have _InterlockedExchangeAdd64_acq()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedAnd64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDAND64, 1, [Define if you have _InterlockedAnd64()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedOr64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDOR64, 1, [Define if you have _InterlockedOr64()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedExchange64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGE64, 1, [Define if you have _InterlockedExchange64()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange64], [3], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE64, 1, [Define if you have _InterlockedCompareExchange64()]))
+	    test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
+	    ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange64_acq], [3], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE64_ACQ, 1, [Define if you have _InterlockedCompareExchange64_acq()]))
+	    test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
+	    ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange64_rel], [3], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE64_REL, 1, [Define if you have _InterlockedCompareExchange64_rel()]))
+	    test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
+
+	    ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange128], [4], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE128, 1, [Define if you have _InterlockedCompareExchange128()]))
+	fi
 	test "$ethr_have_native_atomics" = "yes" && ethr_have_native_spinlock=yes
 	;;
 
@@ -1303,93 +1341,98 @@ case "$THR_LIB_NAME" in
 	    int128="__int128_t"
 	fi
 
-	ETHR_CHK_SYNC_OP([__sync_val_compare_and_swap], [3], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_VAL_COMPARE_AND_SWAP32, 1, [Define if you have __sync_val_compare_and_swap() for 32-bit integers]))
-	test "$have_sync_op" = "yes" && ethr_have_native_atomics=yes
-	ETHR_CHK_SYNC_OP([__sync_add_and_fetch], [2], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_ADD_AND_FETCH32, 1, [Define if you have __sync_add_and_fetch() for 32-bit integers]))
-	ETHR_CHK_SYNC_OP([__sync_fetch_and_and], [2], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_AND32, 1, [Define if you have __sync_fetch_and_and() for 32-bit integers]))
-	ETHR_CHK_SYNC_OP([__sync_fetch_and_or], [2], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_OR32, 1, [Define if you have __sync_fetch_and_or() for 32-bit integers]))
+	if test "X$disable_native_ethr_impls" = "Xyes"; then
+	    ethr_have_native_atomics=no
+	else
+	    ETHR_CHK_SYNC_OP([__sync_val_compare_and_swap], [3], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_VAL_COMPARE_AND_SWAP32, 1, [Define if you have __sync_val_compare_and_swap() for 32-bit integers]))
+	    test "$have_sync_op" = "yes" && ethr_have_native_atomics=yes
+	    ETHR_CHK_SYNC_OP([__sync_add_and_fetch], [2], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_ADD_AND_FETCH32, 1, [Define if you have __sync_add_and_fetch() for 32-bit integers]))
+	    ETHR_CHK_SYNC_OP([__sync_fetch_and_and], [2], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_AND32, 1, [Define if you have __sync_fetch_and_and() for 32-bit integers]))
+	    ETHR_CHK_SYNC_OP([__sync_fetch_and_or], [2], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_OR32, 1, [Define if you have __sync_fetch_and_or() for 32-bit integers]))
+
+	    ETHR_CHK_SYNC_OP([__sync_val_compare_and_swap], [3], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_VAL_COMPARE_AND_SWAP64, 1, [Define if you have __sync_val_compare_and_swap() for 64-bit integers]))
+	    test "$have_sync_op" = "yes" && ethr_have_native_atomics=yes
+	    ETHR_CHK_SYNC_OP([__sync_add_and_fetch], [2], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_ADD_AND_FETCH64, 1, [Define if you have __sync_add_and_fetch() for 64-bit integers]))
+	    ETHR_CHK_SYNC_OP([__sync_fetch_and_and], [2], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_AND64, 1, [Define if you have __sync_fetch_and_and() for 64-bit integers]))
+	    ETHR_CHK_SYNC_OP([__sync_fetch_and_or], [2], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_OR64, 1, [Define if you have __sync_fetch_and_or() for 64-bit integers]))
+
+	    if test $int128 != no; then
+	        ETHR_CHK_SYNC_OP([__sync_val_compare_and_swap], [3], [128], [$int128], AC_DEFINE(ETHR_HAVE___SYNC_VAL_COMPARE_AND_SWAP128, 1, [Define if you have __sync_val_compare_and_swap() for 128-bit integers]))
+	    fi
 
-	ETHR_CHK_SYNC_OP([__sync_val_compare_and_swap], [3], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_VAL_COMPARE_AND_SWAP64, 1, [Define if you have __sync_val_compare_and_swap() for 64-bit integers]))
-	test "$have_sync_op" = "yes" && ethr_have_native_atomics=yes
-	ETHR_CHK_SYNC_OP([__sync_add_and_fetch], [2], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_ADD_AND_FETCH64, 1, [Define if you have __sync_add_and_fetch() for 64-bit integers]))
-	ETHR_CHK_SYNC_OP([__sync_fetch_and_and], [2], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_AND64, 1, [Define if you have __sync_fetch_and_and() for 64-bit integers]))
-	ETHR_CHK_SYNC_OP([__sync_fetch_and_or], [2], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_OR64, 1, [Define if you have __sync_fetch_and_or() for 64-bit integers]))
+	    AC_MSG_CHECKING([for a usable libatomic_ops implementation])
+	    case "x$with_libatomic_ops" in
+	        xno | xyes | x)
+	    	    libatomic_ops_include=
+	    	    ;;
+	        *)
+	    	    if test -d "${with_libatomic_ops}/include"; then
+	    	        libatomic_ops_include="-I$with_libatomic_ops/include"
+	    	        CPPFLAGS="$CPPFLAGS $libatomic_ops_include"
+	    	    else
+	    	        AC_MSG_ERROR([libatomic_ops include directory $with_libatomic_ops/include not found])
+	    	    fi;;
+	    esac
+	    ethr_have_libatomic_ops=no
+	    AC_TRY_LINK([#include "atomic_ops.h"],
+	    	        [
+	    	    	    volatile AO_t x;
+	    	    	    AO_t y;
+	    	    	    int z;
+
+	    	    	    AO_nop_full();
+	    	    	    AO_store(&x, (AO_t) 0);
+	    	    	    z = AO_load(&x);
+	    	    	    z = AO_compare_and_swap_full(&x, (AO_t) 0, (AO_t) 1);
+	    	        ],
+	    	        [ethr_have_native_atomics=yes
+	    	         ethr_have_libatomic_ops=yes])
+	    AC_MSG_RESULT([$ethr_have_libatomic_ops])
+	    if test $ethr_have_libatomic_ops = yes; then
+	        AC_CHECK_SIZEOF(AO_t, ,
+	    	    	        [
+	    	    	    	    #include <stdio.h>
+	    	    	    	    #include "atomic_ops.h"
+	    	    	        ])
+	        AC_DEFINE_UNQUOTED(ETHR_SIZEOF_AO_T, $ac_cv_sizeof_AO_t, [Define to the size of AO_t if libatomic_ops is used])
+
+	        AC_DEFINE(ETHR_HAVE_LIBATOMIC_OPS, 1, [Define if you have libatomic_ops atomic operations])
+	        if test "x$with_libatomic_ops" != "xno" && test "x$with_libatomic_ops" != "x"; then
+	    	    AC_DEFINE(ETHR_PREFER_LIBATOMIC_OPS_NATIVE_IMPLS, 1, [Define if you prefer libatomic_ops native ethread implementations])
+	        fi
+	        ETHR_DEFS="$ETHR_DEFS $libatomic_ops_include"
+	    elif test "x$with_libatomic_ops" != "xno" && test "x$with_libatomic_ops" != "x"; then
+	        AC_MSG_ERROR([No usable libatomic_ops implementation found])
+	    fi
 
-	if test $int128 != no; then
-	    ETHR_CHK_SYNC_OP([__sync_val_compare_and_swap], [3], [128], [$int128], AC_DEFINE(ETHR_HAVE___SYNC_VAL_COMPARE_AND_SWAP128, 1, [Define if you have __sync_val_compare_and_swap() for 128-bit integers]))
-	fi
+	    case "$host_cpu" in
+	      sparc | sun4u | sparc64 | sun4v)
+	    	    case "$with_sparc_memory_order" in
+	    	        "TSO")
+	    	    	    AC_DEFINE(ETHR_SPARC_TSO, 1, [Define if only run in Sparc TSO mode]);;
+	    	        "PSO")
+	    	    	    AC_DEFINE(ETHR_SPARC_PSO, 1, [Define if only run in Sparc PSO, or TSO mode]);;
+	    	        "RMO"|"")
+	    	    	    AC_DEFINE(ETHR_SPARC_RMO, 1, [Define if run in Sparc RMO, PSO, or TSO mode]);;
+	    	        *)
+	    	    	    AC_MSG_ERROR([Unsupported Sparc memory order: $with_sparc_memory_order]);;
+	    	    esac
+	    	    ethr_have_native_atomics=yes;; 
+	      i86pc | i*86 | x86_64 | amd64)
+	    	    if test "$enable_x86_out_of_order" = "yes"; then
+	    	    	    AC_DEFINE(ETHR_X86_OUT_OF_ORDER, 1, [Define if x86/x86_64 out of order instructions should be synchronized])
+	    	    fi
+	    	    ethr_have_native_atomics=yes;;
+	      macppc | ppc | "Power Macintosh")
+	    	    ethr_have_native_atomics=yes;;
+	      tile)
+	    	    ethr_have_native_atomics=yes;;
+	      *)
+	    	    ;;
+	    esac
 
-	AC_MSG_CHECKING([for a usable libatomic_ops implementation])
-	case "x$with_libatomic_ops" in
-	    xno | xyes | x)
-		libatomic_ops_include=
-		;;
-	    *)
-		if test -d "${with_libatomic_ops}/include"; then
-		    libatomic_ops_include="-I$with_libatomic_ops/include"
-		    CPPFLAGS="$CPPFLAGS $libatomic_ops_include"
-		else
-		    AC_MSG_ERROR([libatomic_ops include directory $with_libatomic_ops/include not found])
-		fi;;
-	esac
-	ethr_have_libatomic_ops=no
-	AC_TRY_LINK([#include "atomic_ops.h"],
-		    [
-			volatile AO_t x;
-			AO_t y;
-			int z;
-
-			AO_nop_full();
-			AO_store(&x, (AO_t) 0);
-			z = AO_load(&x);
-			z = AO_compare_and_swap_full(&x, (AO_t) 0, (AO_t) 1);
-		    ],
-		    [ethr_have_native_atomics=yes
-		     ethr_have_libatomic_ops=yes])
-	AC_MSG_RESULT([$ethr_have_libatomic_ops])
-	if test $ethr_have_libatomic_ops = yes; then
-	    AC_CHECK_SIZEOF(AO_t, ,
-			    [
-				#include <stdio.h>
-				#include "atomic_ops.h"
-			    ])
-	    AC_DEFINE_UNQUOTED(ETHR_SIZEOF_AO_T, $ac_cv_sizeof_AO_t, [Define to the size of AO_t if libatomic_ops is used])
-
-	    AC_DEFINE(ETHR_HAVE_LIBATOMIC_OPS, 1, [Define if you have libatomic_ops atomic operations])
-	    if test "x$with_libatomic_ops" != "xno" && test "x$with_libatomic_ops" != "x"; then
-		AC_DEFINE(ETHR_PREFER_LIBATOMIC_OPS_NATIVE_IMPLS, 1, [Define if you prefer libatomic_ops native ethread implementations])
-	    fi
-	    ETHR_DEFS="$ETHR_DEFS $libatomic_ops_include"
-	elif test "x$with_libatomic_ops" != "xno" && test "x$with_libatomic_ops" != "x"; then
-	    AC_MSG_ERROR([No usable libatomic_ops implementation found])
 	fi
 
-	case "$host_cpu" in
-	  sparc | sun4u | sparc64 | sun4v)
-		case "$with_sparc_memory_order" in
-		    "TSO")
-			AC_DEFINE(ETHR_SPARC_TSO, 1, [Define if only run in Sparc TSO mode]);;
-		    "PSO")
-			AC_DEFINE(ETHR_SPARC_PSO, 1, [Define if only run in Sparc PSO, or TSO mode]);;
-		    "RMO"|"")
-			AC_DEFINE(ETHR_SPARC_RMO, 1, [Define if run in Sparc RMO, PSO, or TSO mode]);;
-		    *)
-			AC_MSG_ERROR([Unsupported Sparc memory order: $with_sparc_memory_order]);;
-		esac
-		ethr_have_native_atomics=yes;; 
-	  i86pc | i*86 | x86_64 | amd64)
-		if test "$enable_x86_out_of_order" = "yes"; then
-			AC_DEFINE(ETHR_X86_OUT_OF_ORDER, 1, [Define if x86/x86_64 out of order instructions should be synchronized])
-		fi
-		ethr_have_native_atomics=yes;;
-	  macppc | ppc | "Power Macintosh")
-		ethr_have_native_atomics=yes;;
-	  tile)
-		ethr_have_native_atomics=yes;;
-	  *)
-		;;
-	esac
-
 	test ethr_have_native_atomics = "yes" && ethr_have_native_spinlock=yes
 
 	dnl Restore LIBS
@@ -1451,40 +1494,6 @@ esac
 
 AC_C_DOUBLE_MIDDLE_ENDIAN
 
-AC_ARG_ENABLE(native-ethr-impls,
-	      AS_HELP_STRING([--disable-native-ethr-impls],
-                             [disable native ethread implementations]),
-[ case "$enableval" in
-    no) disable_native_ethr_impls=yes ;;
-    *)  disable_native_ethr_impls=no ;;
-  esac ], disable_native_ethr_impls=no)
-
-AC_ARG_ENABLE(x86-out-of-order,
-	      AS_HELP_STRING([--enable-x86-out-of-order],
-                             [enable x86/x84_64 out of order support (default disabled)]))
-
-test "X$disable_native_ethr_impls" = "Xyes" &&
-  AC_DEFINE(ETHR_DISABLE_NATIVE_IMPLS, 1, [Define if you want to disable native ethread implementations])
-
-AC_ARG_ENABLE(prefer-gcc-native-ethr-impls,
-	      AS_HELP_STRING([--enable-prefer-gcc-native-ethr-impls],
-			     [prefer gcc native ethread implementations]),
-[ case "$enableval" in
-    yes) enable_prefer_gcc_native_ethr_impls=yes ;;
-    *)  enable_prefer_gcc_native_ethr_impls=no ;;
-  esac ], enable_prefer_gcc_native_ethr_impls=no)
-
-test $enable_prefer_gcc_native_ethr_impls = yes &&
-  AC_DEFINE(ETHR_PREFER_GCC_NATIVE_IMPLS, 1, [Define if you prefer gcc native ethread implementations])
-
-AC_ARG_WITH(libatomic_ops,
-	    AS_HELP_STRING([--with-libatomic_ops=PATH],
-			   [specify and prefer usage of libatomic_ops in the ethread library]))
-
-AC_ARG_WITH(with_sparc_memory_order,
-	    AS_HELP_STRING([--with-sparc-memory-order=TSO|PSO|RMO],
-			   [specify sparc memory order (defaults to RMO)]))
-
 ETHR_X86_SSE2_ASM=no
 case "$GCC-$ac_cv_sizeof_void_p-$host_cpu" in
   yes-4-i86pc | yes-4-i*86 | yes-4-x86_64 | yes-4-amd64)
diff --git a/lib/odbc/aclocal.m4 b/lib/odbc/aclocal.m4
index 25f40944e7..aeb31fa58a 100644
--- a/lib/odbc/aclocal.m4
+++ b/lib/odbc/aclocal.m4
@@ -954,6 +954,40 @@ dnl
 AC_DEFUN(ERL_FIND_ETHR_LIB,
 [
 
+AC_ARG_ENABLE(native-ethr-impls,
+	      AS_HELP_STRING([--disable-native-ethr-impls],
+                             [disable native ethread implementations]),
+[ case "$enableval" in
+    no) disable_native_ethr_impls=yes ;;
+    *)  disable_native_ethr_impls=no ;;
+  esac ], disable_native_ethr_impls=no)
+
+test "X$disable_native_ethr_impls" = "Xyes" &&
+  AC_DEFINE(ETHR_DISABLE_NATIVE_IMPLS, 1, [Define if you want to disable native ethread implementations])
+
+AC_ARG_ENABLE(x86-out-of-order,
+	      AS_HELP_STRING([--enable-x86-out-of-order],
+                             [enable x86/x84_64 out of order support (default disabled)]))
+
+AC_ARG_ENABLE(prefer-gcc-native-ethr-impls,
+	      AS_HELP_STRING([--enable-prefer-gcc-native-ethr-impls],
+			     [prefer gcc native ethread implementations]),
+[ case "$enableval" in
+    yes) enable_prefer_gcc_native_ethr_impls=yes ;;
+    *)  enable_prefer_gcc_native_ethr_impls=no ;;
+  esac ], enable_prefer_gcc_native_ethr_impls=no)
+
+test $enable_prefer_gcc_native_ethr_impls = yes &&
+  AC_DEFINE(ETHR_PREFER_GCC_NATIVE_IMPLS, 1, [Define if you prefer gcc native ethread implementations])
+
+AC_ARG_WITH(libatomic_ops,
+	    AS_HELP_STRING([--with-libatomic_ops=PATH],
+			   [specify and prefer usage of libatomic_ops in the ethread library]))
+
+AC_ARG_WITH(with_sparc_memory_order,
+	    AS_HELP_STRING([--with-sparc-memory-order=TSO|PSO|RMO],
+			   [specify sparc memory order (defaults to RMO)]))
+
 LM_CHECK_THR_LIB
 ERL_INTERNAL_LIBS
 
@@ -1003,40 +1037,44 @@ case "$THR_LIB_NAME" in
 
 	AC_DEFINE(ETHR_WIN32_THREADS, 1, [Define if you have win32 threads])
 
-	ETHR_CHK_INTERLOCKED([_InterlockedDecrement], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT, 1, [Define if you have _InterlockedDecrement()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedDecrement_rel], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT_REL, 1, [Define if you have _InterlockedDecrement_rel()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedIncrement], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT, 1, [Define if you have _InterlockedIncrement()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedIncrement_acq], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT_ACQ, 1, [Define if you have _InterlockedIncrement_acq()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD, 1, [Define if you have _InterlockedExchangeAdd()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd_acq], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD_ACQ, 1, [Define if you have _InterlockedExchangeAdd_acq()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedAnd], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDAND, 1, [Define if you have _InterlockedAnd()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedOr], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDOR, 1, [Define if you have _InterlockedOr()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedExchange], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGE, 1, [Define if you have _InterlockedExchange()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange], [3], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE, 1, [Define if you have _InterlockedCompareExchange()]))
-	test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
-	ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange_acq], [3], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE_ACQ, 1, [Define if you have _InterlockedCompareExchange_acq()]))
-	test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
-	ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange_rel], [3], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE_REL, 1, [Define if you have _InterlockedCompareExchange_rel()]))
-	test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
-
-	ETHR_CHK_INTERLOCKED([_InterlockedDecrement64], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT64, 1, [Define if you have _InterlockedDecrement64()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedDecrement64_rel], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT64_REL, 1, [Define if you have _InterlockedDecrement64_rel()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedIncrement64], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT64, 1, [Define if you have _InterlockedIncrement64()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedIncrement64_acq], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT64_ACQ, 1, [Define if you have _InterlockedIncrement64_acq()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD64, 1, [Define if you have _InterlockedExchangeAdd64()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd64_acq], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD64_ACQ, 1, [Define if you have _InterlockedExchangeAdd64_acq()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedAnd64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDAND64, 1, [Define if you have _InterlockedAnd64()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedOr64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDOR64, 1, [Define if you have _InterlockedOr64()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedExchange64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGE64, 1, [Define if you have _InterlockedExchange64()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange64], [3], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE64, 1, [Define if you have _InterlockedCompareExchange64()]))
-	test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
-	ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange64_acq], [3], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE64_ACQ, 1, [Define if you have _InterlockedCompareExchange64_acq()]))
-	test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
-	ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange64_rel], [3], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE64_REL, 1, [Define if you have _InterlockedCompareExchange64_rel()]))
-	test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
-
-	ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange128], [4], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE128, 1, [Define if you have _InterlockedCompareExchange128()]))
-
+	if test "X$disable_native_ethr_impls" = "Xyes"; then
+	    have_interlocked_op=no
+	    ethr_have_native_atomics=no
+	else
+	    ETHR_CHK_INTERLOCKED([_InterlockedDecrement], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT, 1, [Define if you have _InterlockedDecrement()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedDecrement_rel], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT_REL, 1, [Define if you have _InterlockedDecrement_rel()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedIncrement], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT, 1, [Define if you have _InterlockedIncrement()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedIncrement_acq], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT_ACQ, 1, [Define if you have _InterlockedIncrement_acq()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD, 1, [Define if you have _InterlockedExchangeAdd()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd_acq], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD_ACQ, 1, [Define if you have _InterlockedExchangeAdd_acq()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedAnd], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDAND, 1, [Define if you have _InterlockedAnd()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedOr], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDOR, 1, [Define if you have _InterlockedOr()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedExchange], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGE, 1, [Define if you have _InterlockedExchange()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange], [3], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE, 1, [Define if you have _InterlockedCompareExchange()]))
+	    test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
+	    ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange_acq], [3], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE_ACQ, 1, [Define if you have _InterlockedCompareExchange_acq()]))
+	    test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
+	    ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange_rel], [3], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE_REL, 1, [Define if you have _InterlockedCompareExchange_rel()]))
+	    test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
+
+	    ETHR_CHK_INTERLOCKED([_InterlockedDecrement64], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT64, 1, [Define if you have _InterlockedDecrement64()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedDecrement64_rel], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT64_REL, 1, [Define if you have _InterlockedDecrement64_rel()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedIncrement64], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT64, 1, [Define if you have _InterlockedIncrement64()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedIncrement64_acq], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT64_ACQ, 1, [Define if you have _InterlockedIncrement64_acq()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD64, 1, [Define if you have _InterlockedExchangeAdd64()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd64_acq], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD64_ACQ, 1, [Define if you have _InterlockedExchangeAdd64_acq()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedAnd64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDAND64, 1, [Define if you have _InterlockedAnd64()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedOr64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDOR64, 1, [Define if you have _InterlockedOr64()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedExchange64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGE64, 1, [Define if you have _InterlockedExchange64()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange64], [3], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE64, 1, [Define if you have _InterlockedCompareExchange64()]))
+	    test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
+	    ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange64_acq], [3], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE64_ACQ, 1, [Define if you have _InterlockedCompareExchange64_acq()]))
+	    test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
+	    ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange64_rel], [3], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE64_REL, 1, [Define if you have _InterlockedCompareExchange64_rel()]))
+	    test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
+
+	    ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange128], [4], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE128, 1, [Define if you have _InterlockedCompareExchange128()]))
+	fi
 	test "$ethr_have_native_atomics" = "yes" && ethr_have_native_spinlock=yes
 	;;
 
@@ -1303,93 +1341,98 @@ case "$THR_LIB_NAME" in
 	    int128="__int128_t"
 	fi
 
-	ETHR_CHK_SYNC_OP([__sync_val_compare_and_swap], [3], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_VAL_COMPARE_AND_SWAP32, 1, [Define if you have __sync_val_compare_and_swap() for 32-bit integers]))
-	test "$have_sync_op" = "yes" && ethr_have_native_atomics=yes
-	ETHR_CHK_SYNC_OP([__sync_add_and_fetch], [2], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_ADD_AND_FETCH32, 1, [Define if you have __sync_add_and_fetch() for 32-bit integers]))
-	ETHR_CHK_SYNC_OP([__sync_fetch_and_and], [2], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_AND32, 1, [Define if you have __sync_fetch_and_and() for 32-bit integers]))
-	ETHR_CHK_SYNC_OP([__sync_fetch_and_or], [2], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_OR32, 1, [Define if you have __sync_fetch_and_or() for 32-bit integers]))
+	if test "X$disable_native_ethr_impls" = "Xyes"; then
+	    ethr_have_native_atomics=no
+	else
+	    ETHR_CHK_SYNC_OP([__sync_val_compare_and_swap], [3], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_VAL_COMPARE_AND_SWAP32, 1, [Define if you have __sync_val_compare_and_swap() for 32-bit integers]))
+	    test "$have_sync_op" = "yes" && ethr_have_native_atomics=yes
+	    ETHR_CHK_SYNC_OP([__sync_add_and_fetch], [2], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_ADD_AND_FETCH32, 1, [Define if you have __sync_add_and_fetch() for 32-bit integers]))
+	    ETHR_CHK_SYNC_OP([__sync_fetch_and_and], [2], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_AND32, 1, [Define if you have __sync_fetch_and_and() for 32-bit integers]))
+	    ETHR_CHK_SYNC_OP([__sync_fetch_and_or], [2], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_OR32, 1, [Define if you have __sync_fetch_and_or() for 32-bit integers]))
+
+	    ETHR_CHK_SYNC_OP([__sync_val_compare_and_swap], [3], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_VAL_COMPARE_AND_SWAP64, 1, [Define if you have __sync_val_compare_and_swap() for 64-bit integers]))
+	    test "$have_sync_op" = "yes" && ethr_have_native_atomics=yes
+	    ETHR_CHK_SYNC_OP([__sync_add_and_fetch], [2], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_ADD_AND_FETCH64, 1, [Define if you have __sync_add_and_fetch() for 64-bit integers]))
+	    ETHR_CHK_SYNC_OP([__sync_fetch_and_and], [2], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_AND64, 1, [Define if you have __sync_fetch_and_and() for 64-bit integers]))
+	    ETHR_CHK_SYNC_OP([__sync_fetch_and_or], [2], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_OR64, 1, [Define if you have __sync_fetch_and_or() for 64-bit integers]))
+
+	    if test $int128 != no; then
+	        ETHR_CHK_SYNC_OP([__sync_val_compare_and_swap], [3], [128], [$int128], AC_DEFINE(ETHR_HAVE___SYNC_VAL_COMPARE_AND_SWAP128, 1, [Define if you have __sync_val_compare_and_swap() for 128-bit integers]))
+	    fi
 
-	ETHR_CHK_SYNC_OP([__sync_val_compare_and_swap], [3], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_VAL_COMPARE_AND_SWAP64, 1, [Define if you have __sync_val_compare_and_swap() for 64-bit integers]))
-	test "$have_sync_op" = "yes" && ethr_have_native_atomics=yes
-	ETHR_CHK_SYNC_OP([__sync_add_and_fetch], [2], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_ADD_AND_FETCH64, 1, [Define if you have __sync_add_and_fetch() for 64-bit integers]))
-	ETHR_CHK_SYNC_OP([__sync_fetch_and_and], [2], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_AND64, 1, [Define if you have __sync_fetch_and_and() for 64-bit integers]))
-	ETHR_CHK_SYNC_OP([__sync_fetch_and_or], [2], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_OR64, 1, [Define if you have __sync_fetch_and_or() for 64-bit integers]))
+	    AC_MSG_CHECKING([for a usable libatomic_ops implementation])
+	    case "x$with_libatomic_ops" in
+	        xno | xyes | x)
+	    	    libatomic_ops_include=
+	    	    ;;
+	        *)
+	    	    if test -d "${with_libatomic_ops}/include"; then
+	    	        libatomic_ops_include="-I$with_libatomic_ops/include"
+	    	        CPPFLAGS="$CPPFLAGS $libatomic_ops_include"
+	    	    else
+	    	        AC_MSG_ERROR([libatomic_ops include directory $with_libatomic_ops/include not found])
+	    	    fi;;
+	    esac
+	    ethr_have_libatomic_ops=no
+	    AC_TRY_LINK([#include "atomic_ops.h"],
+	    	        [
+	    	    	    volatile AO_t x;
+	    	    	    AO_t y;
+	    	    	    int z;
+
+	    	    	    AO_nop_full();
+	    	    	    AO_store(&x, (AO_t) 0);
+	    	    	    z = AO_load(&x);
+	    	    	    z = AO_compare_and_swap_full(&x, (AO_t) 0, (AO_t) 1);
+	    	        ],
+	    	        [ethr_have_native_atomics=yes
+	    	         ethr_have_libatomic_ops=yes])
+	    AC_MSG_RESULT([$ethr_have_libatomic_ops])
+	    if test $ethr_have_libatomic_ops = yes; then
+	        AC_CHECK_SIZEOF(AO_t, ,
+	    	    	        [
+	    	    	    	    #include <stdio.h>
+	    	    	    	    #include "atomic_ops.h"
+	    	    	        ])
+	        AC_DEFINE_UNQUOTED(ETHR_SIZEOF_AO_T, $ac_cv_sizeof_AO_t, [Define to the size of AO_t if libatomic_ops is used])
+
+	        AC_DEFINE(ETHR_HAVE_LIBATOMIC_OPS, 1, [Define if you have libatomic_ops atomic operations])
+	        if test "x$with_libatomic_ops" != "xno" && test "x$with_libatomic_ops" != "x"; then
+	    	    AC_DEFINE(ETHR_PREFER_LIBATOMIC_OPS_NATIVE_IMPLS, 1, [Define if you prefer libatomic_ops native ethread implementations])
+	        fi
+	        ETHR_DEFS="$ETHR_DEFS $libatomic_ops_include"
+	    elif test "x$with_libatomic_ops" != "xno" && test "x$with_libatomic_ops" != "x"; then
+	        AC_MSG_ERROR([No usable libatomic_ops implementation found])
+	    fi
 
-	if test $int128 != no; then
-	    ETHR_CHK_SYNC_OP([__sync_val_compare_and_swap], [3], [128], [$int128], AC_DEFINE(ETHR_HAVE___SYNC_VAL_COMPARE_AND_SWAP128, 1, [Define if you have __sync_val_compare_and_swap() for 128-bit integers]))
-	fi
+	    case "$host_cpu" in
+	      sparc | sun4u | sparc64 | sun4v)
+	    	    case "$with_sparc_memory_order" in
+	    	        "TSO")
+	    	    	    AC_DEFINE(ETHR_SPARC_TSO, 1, [Define if only run in Sparc TSO mode]);;
+	    	        "PSO")
+	    	    	    AC_DEFINE(ETHR_SPARC_PSO, 1, [Define if only run in Sparc PSO, or TSO mode]);;
+	    	        "RMO"|"")
+	    	    	    AC_DEFINE(ETHR_SPARC_RMO, 1, [Define if run in Sparc RMO, PSO, or TSO mode]);;
+	    	        *)
+	    	    	    AC_MSG_ERROR([Unsupported Sparc memory order: $with_sparc_memory_order]);;
+	    	    esac
+	    	    ethr_have_native_atomics=yes;; 
+	      i86pc | i*86 | x86_64 | amd64)
+	    	    if test "$enable_x86_out_of_order" = "yes"; then
+	    	    	    AC_DEFINE(ETHR_X86_OUT_OF_ORDER, 1, [Define if x86/x86_64 out of order instructions should be synchronized])
+	    	    fi
+	    	    ethr_have_native_atomics=yes;;
+	      macppc | ppc | "Power Macintosh")
+	    	    ethr_have_native_atomics=yes;;
+	      tile)
+	    	    ethr_have_native_atomics=yes;;
+	      *)
+	    	    ;;
+	    esac
 
-	AC_MSG_CHECKING([for a usable libatomic_ops implementation])
-	case "x$with_libatomic_ops" in
-	    xno | xyes | x)
-		libatomic_ops_include=
-		;;
-	    *)
-		if test -d "${with_libatomic_ops}/include"; then
-		    libatomic_ops_include="-I$with_libatomic_ops/include"
-		    CPPFLAGS="$CPPFLAGS $libatomic_ops_include"
-		else
-		    AC_MSG_ERROR([libatomic_ops include directory $with_libatomic_ops/include not found])
-		fi;;
-	esac
-	ethr_have_libatomic_ops=no
-	AC_TRY_LINK([#include "atomic_ops.h"],
-		    [
-			volatile AO_t x;
-			AO_t y;
-			int z;
-
-			AO_nop_full();
-			AO_store(&x, (AO_t) 0);
-			z = AO_load(&x);
-			z = AO_compare_and_swap_full(&x, (AO_t) 0, (AO_t) 1);
-		    ],
-		    [ethr_have_native_atomics=yes
-		     ethr_have_libatomic_ops=yes])
-	AC_MSG_RESULT([$ethr_have_libatomic_ops])
-	if test $ethr_have_libatomic_ops = yes; then
-	    AC_CHECK_SIZEOF(AO_t, ,
-			    [
-				#include <stdio.h>
-				#include "atomic_ops.h"
-			    ])
-	    AC_DEFINE_UNQUOTED(ETHR_SIZEOF_AO_T, $ac_cv_sizeof_AO_t, [Define to the size of AO_t if libatomic_ops is used])
-
-	    AC_DEFINE(ETHR_HAVE_LIBATOMIC_OPS, 1, [Define if you have libatomic_ops atomic operations])
-	    if test "x$with_libatomic_ops" != "xno" && test "x$with_libatomic_ops" != "x"; then
-		AC_DEFINE(ETHR_PREFER_LIBATOMIC_OPS_NATIVE_IMPLS, 1, [Define if you prefer libatomic_ops native ethread implementations])
-	    fi
-	    ETHR_DEFS="$ETHR_DEFS $libatomic_ops_include"
-	elif test "x$with_libatomic_ops" != "xno" && test "x$with_libatomic_ops" != "x"; then
-	    AC_MSG_ERROR([No usable libatomic_ops implementation found])
 	fi
 
-	case "$host_cpu" in
-	  sparc | sun4u | sparc64 | sun4v)
-		case "$with_sparc_memory_order" in
-		    "TSO")
-			AC_DEFINE(ETHR_SPARC_TSO, 1, [Define if only run in Sparc TSO mode]);;
-		    "PSO")
-			AC_DEFINE(ETHR_SPARC_PSO, 1, [Define if only run in Sparc PSO, or TSO mode]);;
-		    "RMO"|"")
-			AC_DEFINE(ETHR_SPARC_RMO, 1, [Define if run in Sparc RMO, PSO, or TSO mode]);;
-		    *)
-			AC_MSG_ERROR([Unsupported Sparc memory order: $with_sparc_memory_order]);;
-		esac
-		ethr_have_native_atomics=yes;; 
-	  i86pc | i*86 | x86_64 | amd64)
-		if test "$enable_x86_out_of_order" = "yes"; then
-			AC_DEFINE(ETHR_X86_OUT_OF_ORDER, 1, [Define if x86/x86_64 out of order instructions should be synchronized])
-		fi
-		ethr_have_native_atomics=yes;;
-	  macppc | ppc | "Power Macintosh")
-		ethr_have_native_atomics=yes;;
-	  tile)
-		ethr_have_native_atomics=yes;;
-	  *)
-		;;
-	esac
-
 	test ethr_have_native_atomics = "yes" && ethr_have_native_spinlock=yes
 
 	dnl Restore LIBS
@@ -1451,40 +1494,6 @@ esac
 
 AC_C_DOUBLE_MIDDLE_ENDIAN
 
-AC_ARG_ENABLE(native-ethr-impls,
-	      AS_HELP_STRING([--disable-native-ethr-impls],
-                             [disable native ethread implementations]),
-[ case "$enableval" in
-    no) disable_native_ethr_impls=yes ;;
-    *)  disable_native_ethr_impls=no ;;
-  esac ], disable_native_ethr_impls=no)
-
-AC_ARG_ENABLE(x86-out-of-order,
-	      AS_HELP_STRING([--enable-x86-out-of-order],
-                             [enable x86/x84_64 out of order support (default disabled)]))
-
-test "X$disable_native_ethr_impls" = "Xyes" &&
-  AC_DEFINE(ETHR_DISABLE_NATIVE_IMPLS, 1, [Define if you want to disable native ethread implementations])
-
-AC_ARG_ENABLE(prefer-gcc-native-ethr-impls,
-	      AS_HELP_STRING([--enable-prefer-gcc-native-ethr-impls],
-			     [prefer gcc native ethread implementations]),
-[ case "$enableval" in
-    yes) enable_prefer_gcc_native_ethr_impls=yes ;;
-    *)  enable_prefer_gcc_native_ethr_impls=no ;;
-  esac ], enable_prefer_gcc_native_ethr_impls=no)
-
-test $enable_prefer_gcc_native_ethr_impls = yes &&
-  AC_DEFINE(ETHR_PREFER_GCC_NATIVE_IMPLS, 1, [Define if you prefer gcc native ethread implementations])
-
-AC_ARG_WITH(libatomic_ops,
-	    AS_HELP_STRING([--with-libatomic_ops=PATH],
-			   [specify and prefer usage of libatomic_ops in the ethread library]))
-
-AC_ARG_WITH(with_sparc_memory_order,
-	    AS_HELP_STRING([--with-sparc-memory-order=TSO|PSO|RMO],
-			   [specify sparc memory order (defaults to RMO)]))
-
 ETHR_X86_SSE2_ASM=no
 case "$GCC-$ac_cv_sizeof_void_p-$host_cpu" in
   yes-4-i86pc | yes-4-i*86 | yes-4-x86_64 | yes-4-amd64)
diff --git a/lib/wx/aclocal.m4 b/lib/wx/aclocal.m4
index 25f40944e7..aeb31fa58a 100644
--- a/lib/wx/aclocal.m4
+++ b/lib/wx/aclocal.m4
@@ -954,6 +954,40 @@ dnl
 AC_DEFUN(ERL_FIND_ETHR_LIB,
 [
 
+AC_ARG_ENABLE(native-ethr-impls,
+	      AS_HELP_STRING([--disable-native-ethr-impls],
+                             [disable native ethread implementations]),
+[ case "$enableval" in
+    no) disable_native_ethr_impls=yes ;;
+    *)  disable_native_ethr_impls=no ;;
+  esac ], disable_native_ethr_impls=no)
+
+test "X$disable_native_ethr_impls" = "Xyes" &&
+  AC_DEFINE(ETHR_DISABLE_NATIVE_IMPLS, 1, [Define if you want to disable native ethread implementations])
+
+AC_ARG_ENABLE(x86-out-of-order,
+	      AS_HELP_STRING([--enable-x86-out-of-order],
+                             [enable x86/x84_64 out of order support (default disabled)]))
+
+AC_ARG_ENABLE(prefer-gcc-native-ethr-impls,
+	      AS_HELP_STRING([--enable-prefer-gcc-native-ethr-impls],
+			     [prefer gcc native ethread implementations]),
+[ case "$enableval" in
+    yes) enable_prefer_gcc_native_ethr_impls=yes ;;
+    *)  enable_prefer_gcc_native_ethr_impls=no ;;
+  esac ], enable_prefer_gcc_native_ethr_impls=no)
+
+test $enable_prefer_gcc_native_ethr_impls = yes &&
+  AC_DEFINE(ETHR_PREFER_GCC_NATIVE_IMPLS, 1, [Define if you prefer gcc native ethread implementations])
+
+AC_ARG_WITH(libatomic_ops,
+	    AS_HELP_STRING([--with-libatomic_ops=PATH],
+			   [specify and prefer usage of libatomic_ops in the ethread library]))
+
+AC_ARG_WITH(with_sparc_memory_order,
+	    AS_HELP_STRING([--with-sparc-memory-order=TSO|PSO|RMO],
+			   [specify sparc memory order (defaults to RMO)]))
+
 LM_CHECK_THR_LIB
 ERL_INTERNAL_LIBS
 
@@ -1003,40 +1037,44 @@ case "$THR_LIB_NAME" in
 
 	AC_DEFINE(ETHR_WIN32_THREADS, 1, [Define if you have win32 threads])
 
-	ETHR_CHK_INTERLOCKED([_InterlockedDecrement], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT, 1, [Define if you have _InterlockedDecrement()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedDecrement_rel], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT_REL, 1, [Define if you have _InterlockedDecrement_rel()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedIncrement], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT, 1, [Define if you have _InterlockedIncrement()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedIncrement_acq], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT_ACQ, 1, [Define if you have _InterlockedIncrement_acq()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD, 1, [Define if you have _InterlockedExchangeAdd()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd_acq], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD_ACQ, 1, [Define if you have _InterlockedExchangeAdd_acq()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedAnd], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDAND, 1, [Define if you have _InterlockedAnd()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedOr], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDOR, 1, [Define if you have _InterlockedOr()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedExchange], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGE, 1, [Define if you have _InterlockedExchange()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange], [3], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE, 1, [Define if you have _InterlockedCompareExchange()]))
-	test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
-	ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange_acq], [3], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE_ACQ, 1, [Define if you have _InterlockedCompareExchange_acq()]))
-	test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
-	ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange_rel], [3], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE_REL, 1, [Define if you have _InterlockedCompareExchange_rel()]))
-	test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
-
-	ETHR_CHK_INTERLOCKED([_InterlockedDecrement64], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT64, 1, [Define if you have _InterlockedDecrement64()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedDecrement64_rel], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT64_REL, 1, [Define if you have _InterlockedDecrement64_rel()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedIncrement64], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT64, 1, [Define if you have _InterlockedIncrement64()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedIncrement64_acq], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT64_ACQ, 1, [Define if you have _InterlockedIncrement64_acq()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD64, 1, [Define if you have _InterlockedExchangeAdd64()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd64_acq], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD64_ACQ, 1, [Define if you have _InterlockedExchangeAdd64_acq()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedAnd64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDAND64, 1, [Define if you have _InterlockedAnd64()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedOr64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDOR64, 1, [Define if you have _InterlockedOr64()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedExchange64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGE64, 1, [Define if you have _InterlockedExchange64()]))
-	ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange64], [3], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE64, 1, [Define if you have _InterlockedCompareExchange64()]))
-	test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
-	ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange64_acq], [3], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE64_ACQ, 1, [Define if you have _InterlockedCompareExchange64_acq()]))
-	test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
-	ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange64_rel], [3], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE64_REL, 1, [Define if you have _InterlockedCompareExchange64_rel()]))
-	test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
-
-	ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange128], [4], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE128, 1, [Define if you have _InterlockedCompareExchange128()]))
-
+	if test "X$disable_native_ethr_impls" = "Xyes"; then
+	    have_interlocked_op=no
+	    ethr_have_native_atomics=no
+	else
+	    ETHR_CHK_INTERLOCKED([_InterlockedDecrement], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT, 1, [Define if you have _InterlockedDecrement()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedDecrement_rel], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT_REL, 1, [Define if you have _InterlockedDecrement_rel()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedIncrement], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT, 1, [Define if you have _InterlockedIncrement()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedIncrement_acq], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT_ACQ, 1, [Define if you have _InterlockedIncrement_acq()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD, 1, [Define if you have _InterlockedExchangeAdd()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd_acq], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD_ACQ, 1, [Define if you have _InterlockedExchangeAdd_acq()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedAnd], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDAND, 1, [Define if you have _InterlockedAnd()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedOr], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDOR, 1, [Define if you have _InterlockedOr()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedExchange], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGE, 1, [Define if you have _InterlockedExchange()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange], [3], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE, 1, [Define if you have _InterlockedCompareExchange()]))
+	    test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
+	    ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange_acq], [3], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE_ACQ, 1, [Define if you have _InterlockedCompareExchange_acq()]))
+	    test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
+	    ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange_rel], [3], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE_REL, 1, [Define if you have _InterlockedCompareExchange_rel()]))
+	    test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
+
+	    ETHR_CHK_INTERLOCKED([_InterlockedDecrement64], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT64, 1, [Define if you have _InterlockedDecrement64()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedDecrement64_rel], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT64_REL, 1, [Define if you have _InterlockedDecrement64_rel()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedIncrement64], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT64, 1, [Define if you have _InterlockedIncrement64()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedIncrement64_acq], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT64_ACQ, 1, [Define if you have _InterlockedIncrement64_acq()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD64, 1, [Define if you have _InterlockedExchangeAdd64()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd64_acq], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD64_ACQ, 1, [Define if you have _InterlockedExchangeAdd64_acq()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedAnd64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDAND64, 1, [Define if you have _InterlockedAnd64()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedOr64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDOR64, 1, [Define if you have _InterlockedOr64()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedExchange64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGE64, 1, [Define if you have _InterlockedExchange64()]))
+	    ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange64], [3], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE64, 1, [Define if you have _InterlockedCompareExchange64()]))
+	    test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
+	    ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange64_acq], [3], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE64_ACQ, 1, [Define if you have _InterlockedCompareExchange64_acq()]))
+	    test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
+	    ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange64_rel], [3], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE64_REL, 1, [Define if you have _InterlockedCompareExchange64_rel()]))
+	    test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
+
+	    ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange128], [4], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE128, 1, [Define if you have _InterlockedCompareExchange128()]))
+	fi
 	test "$ethr_have_native_atomics" = "yes" && ethr_have_native_spinlock=yes
 	;;
 
@@ -1303,93 +1341,98 @@ case "$THR_LIB_NAME" in
 	    int128="__int128_t"
 	fi
 
-	ETHR_CHK_SYNC_OP([__sync_val_compare_and_swap], [3], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_VAL_COMPARE_AND_SWAP32, 1, [Define if you have __sync_val_compare_and_swap() for 32-bit integers]))
-	test "$have_sync_op" = "yes" && ethr_have_native_atomics=yes
-	ETHR_CHK_SYNC_OP([__sync_add_and_fetch], [2], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_ADD_AND_FETCH32, 1, [Define if you have __sync_add_and_fetch() for 32-bit integers]))
-	ETHR_CHK_SYNC_OP([__sync_fetch_and_and], [2], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_AND32, 1, [Define if you have __sync_fetch_and_and() for 32-bit integers]))
-	ETHR_CHK_SYNC_OP([__sync_fetch_and_or], [2], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_OR32, 1, [Define if you have __sync_fetch_and_or() for 32-bit integers]))
+	if test "X$disable_native_ethr_impls" = "Xyes"; then
+	    ethr_have_native_atomics=no
+	else
+	    ETHR_CHK_SYNC_OP([__sync_val_compare_and_swap], [3], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_VAL_COMPARE_AND_SWAP32, 1, [Define if you have __sync_val_compare_and_swap() for 32-bit integers]))
+	    test "$have_sync_op" = "yes" && ethr_have_native_atomics=yes
+	    ETHR_CHK_SYNC_OP([__sync_add_and_fetch], [2], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_ADD_AND_FETCH32, 1, [Define if you have __sync_add_and_fetch() for 32-bit integers]))
+	    ETHR_CHK_SYNC_OP([__sync_fetch_and_and], [2], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_AND32, 1, [Define if you have __sync_fetch_and_and() for 32-bit integers]))
+	    ETHR_CHK_SYNC_OP([__sync_fetch_and_or], [2], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_OR32, 1, [Define if you have __sync_fetch_and_or() for 32-bit integers]))
+
+	    ETHR_CHK_SYNC_OP([__sync_val_compare_and_swap], [3], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_VAL_COMPARE_AND_SWAP64, 1, [Define if you have __sync_val_compare_and_swap() for 64-bit integers]))
+	    test "$have_sync_op" = "yes" && ethr_have_native_atomics=yes
+	    ETHR_CHK_SYNC_OP([__sync_add_and_fetch], [2], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_ADD_AND_FETCH64, 1, [Define if you have __sync_add_and_fetch() for 64-bit integers]))
+	    ETHR_CHK_SYNC_OP([__sync_fetch_and_and], [2], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_AND64, 1, [Define if you have __sync_fetch_and_and() for 64-bit integers]))
+	    ETHR_CHK_SYNC_OP([__sync_fetch_and_or], [2], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_OR64, 1, [Define if you have __sync_fetch_and_or() for 64-bit integers]))
+
+	    if test $int128 != no; then
+	        ETHR_CHK_SYNC_OP([__sync_val_compare_and_swap], [3], [128], [$int128], AC_DEFINE(ETHR_HAVE___SYNC_VAL_COMPARE_AND_SWAP128, 1, [Define if you have __sync_val_compare_and_swap() for 128-bit integers]))
+	    fi
 
-	ETHR_CHK_SYNC_OP([__sync_val_compare_and_swap], [3], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_VAL_COMPARE_AND_SWAP64, 1, [Define if you have __sync_val_compare_and_swap() for 64-bit integers]))
-	test "$have_sync_op" = "yes" && ethr_have_native_atomics=yes
-	ETHR_CHK_SYNC_OP([__sync_add_and_fetch], [2], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_ADD_AND_FETCH64, 1, [Define if you have __sync_add_and_fetch() for 64-bit integers]))
-	ETHR_CHK_SYNC_OP([__sync_fetch_and_and], [2], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_AND64, 1, [Define if you have __sync_fetch_and_and() for 64-bit integers]))
-	ETHR_CHK_SYNC_OP([__sync_fetch_and_or], [2], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_OR64, 1, [Define if you have __sync_fetch_and_or() for 64-bit integers]))
+	    AC_MSG_CHECKING([for a usable libatomic_ops implementation])
+	    case "x$with_libatomic_ops" in
+	        xno | xyes | x)
+	    	    libatomic_ops_include=
+	    	    ;;
+	        *)
+	    	    if test -d "${with_libatomic_ops}/include"; then
+	    	        libatomic_ops_include="-I$with_libatomic_ops/include"
+	    	        CPPFLAGS="$CPPFLAGS $libatomic_ops_include"
+	    	    else
+	    	        AC_MSG_ERROR([libatomic_ops include directory $with_libatomic_ops/include not found])
+	    	    fi;;
+	    esac
+	    ethr_have_libatomic_ops=no
+	    AC_TRY_LINK([#include "atomic_ops.h"],
+	    	        [
+	    	    	    volatile AO_t x;
+	    	    	    AO_t y;
+	    	    	    int z;
+
+	    	    	    AO_nop_full();
+	    	    	    AO_store(&x, (AO_t) 0);
+	    	    	    z = AO_load(&x);
+	    	    	    z = AO_compare_and_swap_full(&x, (AO_t) 0, (AO_t) 1);
+	    	        ],
+	    	        [ethr_have_native_atomics=yes
+	    	         ethr_have_libatomic_ops=yes])
+	    AC_MSG_RESULT([$ethr_have_libatomic_ops])
+	    if test $ethr_have_libatomic_ops = yes; then
+	        AC_CHECK_SIZEOF(AO_t, ,
+	    	    	        [
+	    	    	    	    #include <stdio.h>
+	    	    	    	    #include "atomic_ops.h"
+	    	    	        ])
+	        AC_DEFINE_UNQUOTED(ETHR_SIZEOF_AO_T, $ac_cv_sizeof_AO_t, [Define to the size of AO_t if libatomic_ops is used])
+
+	        AC_DEFINE(ETHR_HAVE_LIBATOMIC_OPS, 1, [Define if you have libatomic_ops atomic operations])
+	        if test "x$with_libatomic_ops" != "xno" && test "x$with_libatomic_ops" != "x"; then
+	    	    AC_DEFINE(ETHR_PREFER_LIBATOMIC_OPS_NATIVE_IMPLS, 1, [Define if you prefer libatomic_ops native ethread implementations])
+	        fi
+	        ETHR_DEFS="$ETHR_DEFS $libatomic_ops_include"
+	    elif test "x$with_libatomic_ops" != "xno" && test "x$with_libatomic_ops" != "x"; then
+	        AC_MSG_ERROR([No usable libatomic_ops implementation found])
+	    fi
 
-	if test $int128 != no; then
-	    ETHR_CHK_SYNC_OP([__sync_val_compare_and_swap], [3], [128], [$int128], AC_DEFINE(ETHR_HAVE___SYNC_VAL_COMPARE_AND_SWAP128, 1, [Define if you have __sync_val_compare_and_swap() for 128-bit integers]))
-	fi
+	    case "$host_cpu" in
+	      sparc | sun4u | sparc64 | sun4v)
+	    	    case "$with_sparc_memory_order" in
+	    	        "TSO")
+	    	    	    AC_DEFINE(ETHR_SPARC_TSO, 1, [Define if only run in Sparc TSO mode]);;
+	    	        "PSO")
+	    	    	    AC_DEFINE(ETHR_SPARC_PSO, 1, [Define if only run in Sparc PSO, or TSO mode]);;
+	    	        "RMO"|"")
+	    	    	    AC_DEFINE(ETHR_SPARC_RMO, 1, [Define if run in Sparc RMO, PSO, or TSO mode]);;
+	    	        *)
+	    	    	    AC_MSG_ERROR([Unsupported Sparc memory order: $with_sparc_memory_order]);;
+	    	    esac
+	    	    ethr_have_native_atomics=yes;; 
+	      i86pc | i*86 | x86_64 | amd64)
+	    	    if test "$enable_x86_out_of_order" = "yes"; then
+	    	    	    AC_DEFINE(ETHR_X86_OUT_OF_ORDER, 1, [Define if x86/x86_64 out of order instructions should be synchronized])
+	    	    fi
+	    	    ethr_have_native_atomics=yes;;
+	      macppc | ppc | "Power Macintosh")
+	    	    ethr_have_native_atomics=yes;;
+	      tile)
+	    	    ethr_have_native_atomics=yes;;
+	      *)
+	    	    ;;
+	    esac
 
-	AC_MSG_CHECKING([for a usable libatomic_ops implementation])
-	case "x$with_libatomic_ops" in
-	    xno | xyes | x)
-		libatomic_ops_include=
-		;;
-	    *)
-		if test -d "${with_libatomic_ops}/include"; then
-		    libatomic_ops_include="-I$with_libatomic_ops/include"
-		    CPPFLAGS="$CPPFLAGS $libatomic_ops_include"
-		else
-		    AC_MSG_ERROR([libatomic_ops include directory $with_libatomic_ops/include not found])
-		fi;;
-	esac
-	ethr_have_libatomic_ops=no
-	AC_TRY_LINK([#include "atomic_ops.h"],
-		    [
-			volatile AO_t x;
-			AO_t y;
-			int z;
-
-			AO_nop_full();
-			AO_store(&x, (AO_t) 0);
-			z = AO_load(&x);
-			z = AO_compare_and_swap_full(&x, (AO_t) 0, (AO_t) 1);
-		    ],
-		    [ethr_have_native_atomics=yes
-		     ethr_have_libatomic_ops=yes])
-	AC_MSG_RESULT([$ethr_have_libatomic_ops])
-	if test $ethr_have_libatomic_ops = yes; then
-	    AC_CHECK_SIZEOF(AO_t, ,
-			    [
-				#include <stdio.h>
-				#include "atomic_ops.h"
-			    ])
-	    AC_DEFINE_UNQUOTED(ETHR_SIZEOF_AO_T, $ac_cv_sizeof_AO_t, [Define to the size of AO_t if libatomic_ops is used])
-
-	    AC_DEFINE(ETHR_HAVE_LIBATOMIC_OPS, 1, [Define if you have libatomic_ops atomic operations])
-	    if test "x$with_libatomic_ops" != "xno" && test "x$with_libatomic_ops" != "x"; then
-		AC_DEFINE(ETHR_PREFER_LIBATOMIC_OPS_NATIVE_IMPLS, 1, [Define if you prefer libatomic_ops native ethread implementations])
-	    fi
-	    ETHR_DEFS="$ETHR_DEFS $libatomic_ops_include"
-	elif test "x$with_libatomic_ops" != "xno" && test "x$with_libatomic_ops" != "x"; then
-	    AC_MSG_ERROR([No usable libatomic_ops implementation found])
 	fi
 
-	case "$host_cpu" in
-	  sparc | sun4u | sparc64 | sun4v)
-		case "$with_sparc_memory_order" in
-		    "TSO")
-			AC_DEFINE(ETHR_SPARC_TSO, 1, [Define if only run in Sparc TSO mode]);;
-		    "PSO")
-			AC_DEFINE(ETHR_SPARC_PSO, 1, [Define if only run in Sparc PSO, or TSO mode]);;
-		    "RMO"|"")
-			AC_DEFINE(ETHR_SPARC_RMO, 1, [Define if run in Sparc RMO, PSO, or TSO mode]);;
-		    *)
-			AC_MSG_ERROR([Unsupported Sparc memory order: $with_sparc_memory_order]);;
-		esac
-		ethr_have_native_atomics=yes;; 
-	  i86pc | i*86 | x86_64 | amd64)
-		if test "$enable_x86_out_of_order" = "yes"; then
-			AC_DEFINE(ETHR_X86_OUT_OF_ORDER, 1, [Define if x86/x86_64 out of order instructions should be synchronized])
-		fi
-		ethr_have_native_atomics=yes;;
-	  macppc | ppc | "Power Macintosh")
-		ethr_have_native_atomics=yes;;
-	  tile)
-		ethr_have_native_atomics=yes;;
-	  *)
-		;;
-	esac
-
 	test ethr_have_native_atomics = "yes" && ethr_have_native_spinlock=yes
 
 	dnl Restore LIBS
@@ -1451,40 +1494,6 @@ esac
 
 AC_C_DOUBLE_MIDDLE_ENDIAN
 
-AC_ARG_ENABLE(native-ethr-impls,
-	      AS_HELP_STRING([--disable-native-ethr-impls],
-                             [disable native ethread implementations]),
-[ case "$enableval" in
-    no) disable_native_ethr_impls=yes ;;
-    *)  disable_native_ethr_impls=no ;;
-  esac ], disable_native_ethr_impls=no)
-
-AC_ARG_ENABLE(x86-out-of-order,
-	      AS_HELP_STRING([--enable-x86-out-of-order],
-                             [enable x86/x84_64 out of order support (default disabled)]))
-
-test "X$disable_native_ethr_impls" = "Xyes" &&
-  AC_DEFINE(ETHR_DISABLE_NATIVE_IMPLS, 1, [Define if you want to disable native ethread implementations])
-
-AC_ARG_ENABLE(prefer-gcc-native-ethr-impls,
-	      AS_HELP_STRING([--enable-prefer-gcc-native-ethr-impls],
-			     [prefer gcc native ethread implementations]),
-[ case "$enableval" in
-    yes) enable_prefer_gcc_native_ethr_impls=yes ;;
-    *)  enable_prefer_gcc_native_ethr_impls=no ;;
-  esac ], enable_prefer_gcc_native_ethr_impls=no)
-
-test $enable_prefer_gcc_native_ethr_impls = yes &&
-  AC_DEFINE(ETHR_PREFER_GCC_NATIVE_IMPLS, 1, [Define if you prefer gcc native ethread implementations])
-
-AC_ARG_WITH(libatomic_ops,
-	    AS_HELP_STRING([--with-libatomic_ops=PATH],
-			   [specify and prefer usage of libatomic_ops in the ethread library]))
-
-AC_ARG_WITH(with_sparc_memory_order,
-	    AS_HELP_STRING([--with-sparc-memory-order=TSO|PSO|RMO],
-			   [specify sparc memory order (defaults to RMO)]))
-
 ETHR_X86_SSE2_ASM=no
 case "$GCC-$ac_cv_sizeof_void_p-$host_cpu" in
   yes-4-i86pc | yes-4-i*86 | yes-4-x86_64 | yes-4-amd64)