--- boost_1_70_0/tools/build/src/tools/clang-linux.jam.back	2019-08-29 17:02:15.285225280 +0900
+++ boost_1_70_0/tools/build/src/tools/clang-linux.jam	2019-08-29 17:02:33.627143178 +0900
@@ -52,7 +52,7 @@
   if $(command) {    
     local command-string = \"$(command)\" ;
     command-string = $(command-string:J=" ") ;
-    version ?= [ MATCH "version ([0-9.]+)"
+    version ?= [ MATCH "Compiler ([0-9.]+)"
       : [ SHELL "$(command-string) --version" ] ] ;
   }