Move inter-lib dependencies to a project variable and into the build targets.

Author: grafikrobot

build.jam

@@ -5,25 +5,28 @@
 
 require-b2 5.2 ;
 
+constant boost_dependencies :
+    /boost/bind//boost_bind
+    /boost/config//boost_config
+    /boost/core//boost_core
+    /boost/detail//boost_detail
+    /boost/iterator//boost_iterator
+    /boost/mpl//boost_mpl
+    /boost/preprocessor//boost_preprocessor
+    /boost/tuple//boost_tuple
+    /boost/type_traits//boost_type_traits
+    /boost/utility//boost_utility ;
+
 project /boost/lambda
     : common-requirements
-        <library>/boost/bind//boost_bind
-        <library>/boost/config//boost_config
-        <library>/boost/core//boost_core
-        <library>/boost/detail//boost_detail
-        <library>/boost/iterator//boost_iterator
-        <library>/boost/mpl//boost_mpl
-        <library>/boost/preprocessor//boost_preprocessor
-        <library>/boost/tuple//boost_tuple
-        <library>/boost/type_traits//boost_type_traits
-        <library>/boost/utility//boost_utility
         <include>include
     ;
 
 explicit
-    [ alias boost_lambda ]
+    [ alias boost_lambda : : : : <library>$(boost_dependencies) ]
     [ alias all : boost_lambda test ]
     ;
 
 call-if : boost-library lambda
     ;
+