diff --git a/src/tools/clang-linux.jam b/src/tools/clang-linux.jam
--- a/src/tools/clang-linux.jam
+++ b/src/tools/clang-linux.jam
@@ -48,7 +48,8 @@ rule init ( version ? :  command * : options * ) {
     : $(command) ] ;
                 
   # Determine the version
-  local command-string = $(command:J=" ") ;
+  local command-string = \"$(command)\" ;
+  command-string = $(command-string:J=" ") ;
 
   if $(command) {
     version ?= [ MATCH "version ([0-9.]+)"