diff -u -r ../boost_1_70_0/tools/build/src/tools/common.jam ./tools/build/src/tools/common.jam
--- ../boost_1_70_0/tools/build/src/tools/common.jam	2019-04-09 19:36:57.000000000 +0000
+++ ./tools/build/src/tools/common.jam	2019-05-05 22:41:59.313215785 +0000
@@ -980,10 +980,11 @@
     }
 
     # Ditto, from Clang 4
-    if ( $(tag) = clang || $(tag) = clangw ) && [ numbers.less 3 $(version[1]) ]
-    {
-        version = $(version[1]) ;
-    }
+    # See https://github.com/boostorg/build/issues/385
+    #if ( $(tag) = clang || $(tag) = clangw ) && [ numbers.less 3 $(version[1]) ]
+    #{
+    #    version = $(version[1]) ;
+    #}
 
     # On intel, version is not added, because it does not matter and it is the
     # version of vc used as backend that matters. Ideally, we should encode the