diff --git a/test/lexical_cast_arrays_test.cpp b/test/lexical_cast_arrays_test.cpp
index 703f75b..cb590d2 100644
--- a/test/lexical_cast_arrays_test.cpp
+++ b/test/lexical_cast_arrays_test.cpp
@@ -22,6 +22,14 @@ void testing_std_array_input_conversion();
 
 using namespace boost;
 
+#if !defined(BOOST_NO_CXX11_CHAR16_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS) && !defined(_LIBCPP_VERSION)
+#define BOOST_LC_RUNU16
+#endif
+
+#if !defined(BOOST_NO_CXX11_CHAR32_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS) && !defined(_LIBCPP_VERSION)
+#define BOOST_LC_RUNU32
+#endif
+
 boost::unit_test::test_suite *init_unit_test_suite(int, char *[])
 {
     unit_test::test_suite *suite =
@@ -91,7 +99,7 @@ static void testing_template_array_output_on_spec_value(T val)
 
 #endif
 
-#if !defined(BOOST_NO_CXX11_CHAR16_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS)
+#ifdef BOOST_LC_RUNU16
     typedef ArrayT<char16_t, 300> u16arr_type;
     typedef ArrayT<char16_t, 3> u16short_arr_type;
     std::u16string u16ethalon(u"100");
@@ -109,7 +117,7 @@ static void testing_template_array_output_on_spec_value(T val)
     BOOST_CHECK_THROW(lexical_cast<u16short_arr_type>(val), boost::bad_lexical_cast);
 #endif
 
-#if !defined(BOOST_NO_CXX11_CHAR32_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS)
+#ifdef BOOST_LC_RUNU32
     typedef ArrayT<char32_t, 300> u32arr_type;
     typedef ArrayT<char32_t, 3> u32short_arr_type;
     std::u32string u32ethalon(U"100");
@@ -190,7 +198,7 @@ static void testing_template_array_output_on_char_value()
 
 #endif
 
-#if !defined(BOOST_NO_CXX11_CHAR16_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS)
+#ifdef BOOST_LC_RUNU16
     typedef ArrayT<char16_t, 300> u16arr_type;
     typedef ArrayT<char16_t, 3> u16short_arr_type;
     std::u16string u16ethalon(u"100");
@@ -217,7 +225,7 @@ static void testing_template_array_output_on_char_value()
     BOOST_CHECK_THROW(lexical_cast<u16short_arr_type>(val), boost::bad_lexical_cast);
 #endif
 
-#if !defined(BOOST_NO_CXX11_CHAR32_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS)
+#ifdef BOOST_LC_RUNU32
     typedef ArrayT<char32_t, 300> u32arr_type;
     typedef ArrayT<char32_t, 3> u32short_arr_type;
     std::u32string u32ethalon(U"100");
@@ -328,7 +336,7 @@ static void testing_generic_array_input_conversion()
     }
 #endif
 
-#if !defined(BOOST_NO_CXX11_CHAR16_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS)
+#ifdef BOOST_LC_RUNU16
     {
         const ArrayT<const char16_t, 4> var_zero_terminated_const_var_const_char = {{ u'1', u'0', u'0', u'\0'}}; 
         BOOST_CHECK(lexical_cast<std::u16string>(var_zero_terminated_const_var_const_char) == u"100");
@@ -339,7 +347,7 @@ static void testing_generic_array_input_conversion()
     }
 #endif
 
-#if !defined(BOOST_NO_CXX11_CHAR32_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS)
+#ifdef BOOST_LC_RUNU32
     {
         const ArrayT<const char32_t, 4> var_zero_terminated_const_var_const_char = {{ U'1', U'0', U'0', U'\0'}}; 
         BOOST_CHECK(lexical_cast<std::u32string>(var_zero_terminated_const_var_const_char) == U"100");
diff --git a/test/lexical_cast_integral_types_test.cpp b/test/lexical_cast_integral_types_test.cpp
index c69e741..235287e 100644
--- a/test/lexical_cast_integral_types_test.cpp
+++ b/test/lexical_cast_integral_types_test.cpp
@@ -403,12 +403,12 @@ void test_conversion_from_to_integral_minimal()
     test_conversion_from_integral_to_char<T>(wzero);
     test_conversion_from_char_to_integral<T>(wzero);
 #endif
-#if !defined(BOOST_NO_CXX11_CHAR16_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS)
+#if !defined(BOOST_NO_CXX11_CHAR16_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS) && !defined(_LIBCPP_VERSION)
     char16_t const u16zero = u'0';
     test_conversion_from_integral_to_char<T>(u16zero);
     test_conversion_from_char_to_integral<T>(u16zero);
 #endif
-#if !defined(BOOST_NO_CXX11_CHAR32_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS)
+#if !defined(BOOST_NO_CXX11_CHAR32_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS) && !defined(_LIBCPP_VERSION)
     char32_t const u32zero = u'0';
     test_conversion_from_integral_to_char<T>(u32zero);
     test_conversion_from_char_to_integral<T>(u32zero);
diff --git a/test/lexical_cast_iterator_range_test.cpp b/test/lexical_cast_iterator_range_test.cpp
index 20d850c..1b4a3ef 100644
--- a/test/lexical_cast_iterator_range_test.cpp
+++ b/test/lexical_cast_iterator_range_test.cpp
@@ -27,6 +27,15 @@ using namespace boost;
 #define BOOST_LCAST_NO_WCHAR_T
 #endif
 
+
+#if !defined(BOOST_NO_CXX11_CHAR16_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS) && !defined(_LIBCPP_VERSION)
+#define BOOST_LC_RUNU16
+#endif
+
+#if !defined(BOOST_NO_CXX11_CHAR32_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS) && !defined(_LIBCPP_VERSION)
+#define BOOST_LC_RUNU32
+#endif
+
 struct class_with_user_defined_sream_operators {
     int i;
 
@@ -140,7 +149,7 @@ void test_it_range_using_char(CharT* one, CharT* eleven)
     BOOST_CHECK(lexical_cast<std::wstring>(crng2) == L"1");
 #endif
 
-#if !defined(BOOST_NO_CXX11_CHAR16_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS) && defined(BOOST_STL_SUPPORTS_NEW_UNICODE_LOCALES)
+#if defined(BOOST_LC_RUNU16) && defined(BOOST_STL_SUPPORTS_NEW_UNICODE_LOCALES)
     typedef std::basic_string<char16_t> my_char16_string;
     BOOST_CHECK(lexical_cast<my_char16_string>(rng1) == u"1");
     BOOST_CHECK(lexical_cast<my_char16_string>(crng1) == u"1");
@@ -148,7 +157,7 @@ void test_it_range_using_char(CharT* one, CharT* eleven)
     BOOST_CHECK(lexical_cast<my_char16_string>(crng2) == u"1");
 #endif
 
-#if !defined(BOOST_NO_CXX11_CHAR32_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS) && defined(BOOST_STL_SUPPORTS_NEW_UNICODE_LOCALES)
+#if defined(BOOST_LC_RUNU32) && defined(BOOST_STL_SUPPORTS_NEW_UNICODE_LOCALES)
     typedef std::basic_string<char32_t> my_char32_string;
     BOOST_CHECK(lexical_cast<my_char32_string>(rng1) == U"1");
     BOOST_CHECK(lexical_cast<my_char32_string>(crng1) == U"1");
@@ -200,7 +209,7 @@ void test_wchar_iterator_ranges()
 
 void test_char16_iterator_ranges()
 {
-#if !defined(BOOST_NO_CXX11_CHAR16_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS)
+#if defined(BOOST_LC_RUNU16)
     typedef char16_t test_char_type;
     test_char_type data1[] = u"1";
     test_char_type data2[] = u"11";
@@ -212,7 +221,7 @@ void test_char16_iterator_ranges()
 
 void test_char32_iterator_ranges()
 {
-#if !defined(BOOST_NO_CXX11_CHAR32_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS)
+#if defined(BOOST_LC_RUNU32)
     typedef char32_t test_char_type;
     test_char_type data1[] = U"1";
     test_char_type data2[] = U"11";