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

…targets.

build.jam

@@ -11,15 +11,17 @@ import feature ;
 import os ;
 import predef ;
 
+constant boost_dependencies :
+    /boost/assert//boost_assert
+    /boost/config//boost_config
+    /boost/core//boost_core
+    /boost/mp11//boost_mp11
+    /boost/pool//boost_pool
+    /boost/predef//boost_predef
+    /boost/smart_ptr//boost_smart_ptr ;
+
 project /boost/context
     : common-requirements
-        <library>/boost/assert//boost_assert
-        <library>/boost/config//boost_config
-        <library>/boost/core//boost_core
-        <library>/boost/mp11//boost_mp11
-        <library>/boost/pool//boost_pool
-        <library>/boost/predef//boost_predef
-        <library>/boost/smart_ptr//boost_smart_ptr
         <include>include
     : requirements
         # Auto-detect toolset default address-model and architecture.
@@ -88,3 +90,4 @@ explicit
 call-if : boost-library context
     : install boost_context
     ;
+

build/Jamfile.v2

@@ -17,6 +17,7 @@ import config : requires ;
 import feature ;
 
 project
+    : common-requirements <library>$(boost_dependencies)
     : requirements
       <target-os>windows:<define>_WIN32_WINNT=0x0601
       <target-os>linux,<toolset>gcc,<segmented-stacks>on:<cxxflags>-fsplit-stack