diff --git a/doc/html/boost_typetraits/reference/is_constructible.html b/doc/html/boost_typetraits/reference/is_constructible.html
index c9fe383..464b476 100644
--- a/doc/html/boost_typetraits/reference/is_constructible.html
+++ b/doc/html/boost_typetraits/reference/is_constructible.html
@@ -70,7 +70,9 @@
         the C++11 features <code class="computeroutput"><span class="keyword">decltype</span></code>
         variadic templates and SFINAE-expression support for full support. While
         there is some fallback code for cases where this is not the case, the trait
-        should really be considered broken in that case.
+        should really be considered broken in that case. The header will define the
+        macro <code class="computeroutput"><span class="identifier">BOOST_TT_IS_CONSTRUCTIBLE_CONFORMING</span></code>
+        when the full implementation is available.
       </p>
 <p>
         <span class="bold"><strong>Header:</strong></span> <code class="computeroutput"> <span class="preprocessor">#include</span>
diff --git a/doc/html/index/s11.html b/doc/html/index/s11.html
index 5130bb1..51c8a37 100644
--- a/doc/html/index/s11.html
+++ b/doc/html/index/s11.html
@@ -24,7 +24,7 @@
 </div>
 <div class="section">
 <div class="titlepage"><div><div><h2 class="title" style="clear: both">
-<a name="id1660500"></a>Class Index</h2></div></div></div>
+<a name="id1652848"></a>Class Index</h2></div></div></div>
 <p><a class="link" href="s11.html#idx_id_0">A</a> <a class="link" href="s11.html#idx_id_2">C</a> <a class="link" href="s11.html#idx_id_3">D</a> <a class="link" href="s11.html#idx_id_4">E</a> <a class="link" href="s11.html#idx_id_5">F</a> <a class="link" href="s11.html#idx_id_6">H</a> <a class="link" href="s11.html#idx_id_7">I</a> <a class="link" href="s11.html#idx_id_8">M</a> <a class="link" href="s11.html#idx_id_9">N</a> <a class="link" href="s11.html#idx_id_10">O</a> <a class="link" href="s11.html#idx_id_11">P</a> <a class="link" href="s11.html#idx_id_12">R</a> <a class="link" href="s11.html#idx_id_13">T</a></p>
 <div class="variablelist"><dl class="variablelist">
 <dt>
diff --git a/doc/html/index/s12.html b/doc/html/index/s12.html
index 3635cf2..df18fb5 100644
--- a/doc/html/index/s12.html
+++ b/doc/html/index/s12.html
@@ -24,7 +24,7 @@
 </div>
 <div class="section">
 <div class="titlepage"><div><div><h2 class="title" style="clear: both">
-<a name="id1663998"></a>Typedef Index</h2></div></div></div>
+<a name="id1657318"></a>Typedef Index</h2></div></div></div>
 <p><a class="link" href="s12.html#idx_id_21">F</a> <a class="link" href="s12.html#idx_id_28">R</a> <a class="link" href="s12.html#idx_id_29">T</a> <a class="link" href="s12.html#idx_id_31">V</a></p>
 <div class="variablelist"><dl class="variablelist">
 <dt>
diff --git a/doc/html/index/s13.html b/doc/html/index/s13.html
index 5e6f306..6fca6f7 100644
--- a/doc/html/index/s13.html
+++ b/doc/html/index/s13.html
@@ -24,7 +24,7 @@
 </div>
 <div class="section">
 <div class="titlepage"><div><div><h2 class="title" style="clear: both">
-<a name="id1664189"></a>Macro Index</h2></div></div></div>
+<a name="id1657546"></a>Macro Index</h2></div></div></div>
 <p><a class="link" href="s13.html#idx_id_33">B</a></p>
 <div class="variablelist"><dl class="variablelist">
 <dt>
@@ -167,6 +167,10 @@
 <p><span class="index-entry-level-0">BOOST_TT_HAS_CONFORMING_IS_CLASS_IMPLEMENTATION</span></p>
 <div class="index"><ul class="index" style="list-style-type: none; "><li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/is_class.html" title="is_class"><span class="index-entry-level-1">is_class</span></a></p></li></ul></div>
 </li>
+<li class="listitem" style="list-style-type: none">
+<p><span class="index-entry-level-0">BOOST_TT_IS_CONSTRUCTIBLE_CONFORMING</span></p>
+<div class="index"><ul class="index" style="list-style-type: none; "><li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/is_constructible.html" title="is_constructible"><span class="index-entry-level-1">is_constructible</span></a></p></li></ul></div>
+</li>
 </ul></div></dd>
 </dl></div>
 </div>
diff --git a/doc/html/index/s14.html b/doc/html/index/s14.html
index b37bfe1..2bf95cd 100644
--- a/doc/html/index/s14.html
+++ b/doc/html/index/s14.html
@@ -23,7 +23,7 @@
 </div>
 <div class="section">
 <div class="titlepage"><div><div><h2 class="title" style="clear: both">
-<a name="id1662629"></a>Index</h2></div></div></div>
+<a name="id1655963"></a>Index</h2></div></div></div>
 <p><a class="link" href="s14.html#idx_id_48">A</a> <a class="link" href="s14.html#idx_id_49">B</a> <a class="link" href="s14.html#idx_id_50">C</a> <a class="link" href="s14.html#idx_id_51">D</a> <a class="link" href="s14.html#idx_id_52">E</a> <a class="link" href="s14.html#idx_id_53">F</a> <a class="link" href="s14.html#idx_id_54">H</a> <a class="link" href="s14.html#idx_id_55">I</a> <a class="link" href="s14.html#idx_id_56">M</a> <a class="link" href="s14.html#idx_id_57">N</a> <a class="link" href="s14.html#idx_id_58">O</a> <a class="link" href="s14.html#idx_id_59">P</a> <a class="link" href="s14.html#idx_id_60">R</a> <a class="link" href="s14.html#idx_id_61">T</a> <a class="link" href="s14.html#idx_id_62">U</a> <a class="link" href="s14.html#idx_id_63">V</a></p>
 <div class="variablelist"><dl class="variablelist">
 <dt>
@@ -198,6 +198,10 @@
 <p><span class="index-entry-level-0">BOOST_TT_HAS_CONFORMING_IS_CLASS_IMPLEMENTATION</span></p>
 <div class="index"><ul class="index" style="list-style-type: none; "><li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/is_class.html" title="is_class"><span class="index-entry-level-1">is_class</span></a></p></li></ul></div>
 </li>
+<li class="listitem" style="list-style-type: none">
+<p><span class="index-entry-level-0">BOOST_TT_IS_CONSTRUCTIBLE_CONFORMING</span></p>
+<div class="index"><ul class="index" style="list-style-type: none; "><li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/is_constructible.html" title="is_constructible"><span class="index-entry-level-1">is_constructible</span></a></p></li></ul></div>
+</li>
 </ul></div></dd>
 <dt>
 <a name="idx_id_50"></a><span class="term">C</span>
@@ -733,7 +737,13 @@
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/is_complex.html" title="is_complex"><span class="index-entry-level-0">is_complex</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/is_compound.html" title="is_compound"><span class="index-entry-level-0">is_compound</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/is_const.html" title="is_const"><span class="index-entry-level-0">is_const</span></a></p></li>
-<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/is_constructible.html" title="is_constructible"><span class="index-entry-level-0">is_constructible</span></a></p></li>
+<li class="listitem" style="list-style-type: none">
+<p><span class="index-entry-level-0">is_constructible</span></p>
+<div class="index"><ul class="index" style="list-style-type: none; ">
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/is_constructible.html" title="is_constructible"><span class="index-entry-level-1">BOOST_TT_IS_CONSTRUCTIBLE_CONFORMING</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><span class="bold"><strong><a class="link" href="../boost_typetraits/reference/is_constructible.html" title="is_constructible"><span class="index-entry-level-1">is_constructible</span></a></strong></span></p></li>
+</ul></div>
+</li>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/is_convertible.html" title="is_convertible"><span class="index-entry-level-0">is_convertible</span></a></p></li>
 <li class="listitem" style="list-style-type: none">
 <p><span class="index-entry-level-0">is_convertible_to_Ret</span></p>
diff --git a/doc/is_constructible.qbk b/doc/is_constructible.qbk
index b301a25..1965410 100644
--- a/doc/is_constructible.qbk
+++ b/doc/is_constructible.qbk
@@ -37,6 +37,7 @@ Indicates whether `T` is move-constructible.
 
 __compat This trait requires the C++11 features `decltype` variadic templates and SFINAE-expression support for full support.
 While there is some fallback code for cases where this is not the case, the trait should really be considered broken in that case.
+The header will define the macro `BOOST_TT_IS_CONSTRUCTIBLE_CONFORMING` when the full implementation is available.
 
 __header ` #include <boost/type_traits/is_copy_constructible.hpp>` or ` #include <boost/type_traits.hpp>`
 
diff --git a/include/boost/type_traits/is_constructible.hpp b/include/boost/type_traits/is_constructible.hpp
index 2017317..0c3b5c8 100644
--- a/include/boost/type_traits/is_constructible.hpp
+++ b/include/boost/type_traits/is_constructible.hpp
@@ -19,6 +19,8 @@
 #include <boost/type_traits/detail/yes_no_type.hpp>
 #include <boost/type_traits/declval.hpp>
 
+#define BOOST_TT_IS_CONSTRUCTIBLE_CONFORMING 1
+
 namespace boost{
 
    namespace detail{