diff --git a/configure b/configure
index 152b3569..235cc780 100644
--- a/configure
+++ b/configure
@@ -1792,6 +1792,8 @@ ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ex
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
 
+OLD_CXXFLAGS="$CXXFLAGS"
+
 if test $enable_test = 'yes'; then
    CXXFLAGS="-I$boost_base -I$boost_base/libs/config/test $CXXFLAGS"
 else
@@ -2311,15 +2313,21 @@ if test $enable_test = 'yes'; then
 
 if test "$required_defs" = ""; then
 echo no boost macros need to be defined
+echo no boost macros need to be defined >&5
 else
 echo the following macros need to be defined
 echo    $required_defs
+echo the following macros need to be defined >&5
+echo    $required_defs >&5
 fi
 if test "$required_undefs" = ""; then
 echo no boost macros need to be undefined
+echo no boost macros need to be undefined >&5
 else
 echo "the following macros need to be undef'ed"
 echo    $required_undefs
+echo "the following macros need to be undef'ed" >&5
+echo    $required_undefs >&5
 fi
 
 else
@@ -2378,6 +2386,24 @@ done
 
 cat_conts=`cat user.hpp`
 
+#
+# post configuration step:
+#
+echo "$as_me:$LINENO: checking original configuration " >&5
+echo $ECHO_N "checking original configuration ... $ECHO_C" >&6
+rm -f conftest$ac_exeext
+$CXX -I$boost_base $OLD_CXXFLAGS -DBOOST_NO_USER_CONFIG -o conftest$ac_exeext $LDFLAGS $boost_base/libs/config/test/config_info.cpp $LIBS >&5 2>&1
+./conftest >&5 2>&1
+echo "$as_me:$LINENO: result: done" >&5
+echo "${ECHO_T}done" >&6
+echo "$as_me:$LINENO: checking new configuration " >&5
+echo $ECHO_N "checking new configuration ... $ECHO_C" >&6
+rm -f conftest$ac_exeext
+$CXX -I$boost_base -I$boost_base/libs/config $OLD_CXXFLAGS -DBOOST_USER_CONFIG='"user.hpp"' -o conftest$ac_exeext $LDFLAGS $boost_base/libs/config/test/config_info.cpp $LIBS >&5 2>&1
+./conftest >&5 2>&1
+echo "$as_me:$LINENO: result: done" >&5
+echo "${ECHO_T}done" >&6
+
           ac_config_commands="$ac_config_commands default"
 
 
@@ -3017,6 +3043,9 @@ fi
 
 
 
+
+
+
 
 
 
diff --git a/test/config_info.cpp b/test/config_info.cpp
index 732525bf..ab64defa 100644
--- a/test/config_info.cpp
+++ b/test/config_info.cpp
@@ -825,8 +825,20 @@ void print_platform_macros()
 void print_boost_macros()
 {
    std::cout << "Boost version " << BOOST_STRINGIZE(BOOST_VERSION) << std::endl;
+   // config setup macros first:
+   PRINT_MACRO(BOOST_USER_CONFIG);
+   PRINT_MACRO(BOOST_COMPILER_CONFIG);
+   PRINT_MACRO(BOOST_STDLIB_CONFIG);
+   PRINT_MACRO(BOOST_PLATFORM_CONFIG);
+   PRINT_MACRO(BOOST_NO_CONFIG);
+   PRINT_MACRO(BOOST_NO_USER_CONFIG);
+   PRINT_MACRO(BOOST_NO_COMPILER_CONFIG);
+   PRINT_MACRO(BOOST_NO_STDLIB_CONFIG);
+   PRINT_MACRO(BOOST_NO_PLATFORM_CONFIG);
+   // then defect and feature macros:
    PRINT_MACRO(BOOST_BCB_PARTIAL_SPECIALIZATION_BUG);
    PRINT_MACRO(BOOST_DECL);
+   PRINT_MACRO(BOOST_DEDUCED_TYPENAME);
    PRINT_MACRO(BOOST_DISABLE_THREADS);
    PRINT_MACRO(BOOST_DISABLE_WIN32);
    PRINT_MACRO(BOOST_HAS_BETHREADS);
@@ -840,6 +852,7 @@ void print_boost_macros()
    PRINT_MACRO(BOOST_HAS_MS_INT64);
    PRINT_MACRO(BOOST_HAS_NANOSLEEP);
    PRINT_MACRO(BOOST_HAS_NL_TYPES_H);
+   PRINT_MACRO(BOOST_HAS_NRVO);
    PRINT_MACRO(BOOST_HAS_PTHREAD_DELAY_NP);
    PRINT_MACRO(BOOST_HAS_PTHREAD_MUTEXATTR_SETTYPE);
    PRINT_MACRO(BOOST_HAS_PTHREAD_YIELD);
@@ -934,3 +947,4 @@ int main()
 
 
 
+
diff --git a/tools/configure.in b/tools/configure.in
index 07cbbef0..5cb7a2d0 100644
--- a/tools/configure.in
+++ b/tools/configure.in
@@ -120,6 +120,8 @@ ac_ext=$use_ac_ext
 
 AC_LANG_CPLUSPLUS
 
+OLD_CXXFLAGS="$CXXFLAGS"
+
 if test $enable_test = 'yes'; then
    CXXFLAGS="-I$boost_base -I$boost_base/libs/config/test $CXXFLAGS"
 else
@@ -297,15 +299,21 @@ if test $enable_test = 'yes'; then
 
 if test "$required_defs" = ""; then
 echo no boost macros need to be defined
+echo no boost macros need to be defined >&5
 else
 echo the following macros need to be defined
 echo    $required_defs
+echo the following macros need to be defined >&5
+echo    $required_defs >&5
 fi
 if test "$required_undefs" = ""; then
 echo no boost macros need to be undefined
+echo no boost macros need to be undefined >&5
 else
 echo "the following macros need to be undef'ed"
 echo    $required_undefs
+echo "the following macros need to be undef'ed" >&5
+echo    $required_undefs >&5
 fi
 
 else
@@ -364,6 +372,20 @@ done
 
 cat_conts=`cat user.hpp`
 
+#
+# post configuration step:
+#   
+AC_MSG_CHECKING(original configuration )
+rm -f conftest$ac_exeext
+$CXX -I$boost_base $OLD_CXXFLAGS -DBOOST_NO_USER_CONFIG -o conftest$ac_exeext $LDFLAGS $boost_base/libs/config/test/config_info.cpp $LIBS >&5 2>&1
+./conftest >&5 2>&1
+AC_MSG_RESULT(done)
+AC_MSG_CHECKING(new configuration )
+rm -f conftest$ac_exeext
+$CXX -I$boost_base -I$boost_base/libs/config $OLD_CXXFLAGS -DBOOST_USER_CONFIG='"user.hpp"' -o conftest$ac_exeext $LDFLAGS $boost_base/libs/config/test/config_info.cpp $LIBS >&5 2>&1
+./conftest >&5 2>&1
+AC_MSG_RESULT(done)
+
 AC_OUTPUT(
 [],
 [
@@ -404,6 +426,9 @@ fi
 
 
 
+
+
+