diff --git a/include/boost/config/compiler/clang.hpp b/include/boost/config/compiler/clang.hpp
index 9d8ba7d71..148178859 100644
--- a/include/boost/config/compiler/clang.hpp
+++ b/include/boost/config/compiler/clang.hpp
@@ -351,3 +351,6 @@
 // Macro used to identify the Clang compiler.
 #define BOOST_CLANG 1
 
+#if (__clang_major__ >= 4 || (__clang_major__ >= 3 && __clang_minor__ >= 8))
+#  define BOOST_ATTRIBUTE_TARGET(isa) __attribute__ ((target(isa)))
+#endif
diff --git a/include/boost/config/compiler/gcc.hpp b/include/boost/config/compiler/gcc.hpp
index da1a43229..624bd3ccb 100644
--- a/include/boost/config/compiler/gcc.hpp
+++ b/include/boost/config/compiler/gcc.hpp
@@ -242,7 +242,7 @@
 // C++0x features in 4.7.n and later
 //
 #if (BOOST_GCC_VERSION < 40700) || !defined(BOOST_GCC_CXX11)
-// Note that while constexpr is partly supported in gcc-4.6 it's a 
+// Note that while constexpr is partly supported in gcc-4.6 it's a
 // pre-std version with several bugs:
 #  define BOOST_NO_CXX11_CONSTEXPR
 #  define BOOST_NO_CXX11_FINAL
@@ -373,3 +373,6 @@
 #  endif
 #endif
 
+#if (BOOST_GCC_VERSION >= 40800)
+#  define BOOST_ATTRIBUTE_TARGET(isa) __attribute__ ((target(isa)))
+#endif