diff --git a/Jamfile.v2 b/Jamfile.v2
index 7ad606f78e..0897d10549 100644
--- a/Jamfile.v2
+++ b/Jamfile.v2
@@ -4,4 +4,6 @@ project boost
     ;
     
 build-project libs/test/build ;
-build-project libs/date_time/build ;
\ No newline at end of file
+build-project libs/date_time/build ;
+build-project libs/regex/build ;
+build-project libs/signals/build ;
diff --git a/project-root.jam b/project-root.jam
index 487eef9803..ea64b4409a 100644
--- a/project-root.jam
+++ b/project-root.jam
@@ -1,2 +1,5 @@
 
 import gcc ;
+import lex ;
+import bison ;
+import testing ;