Index: build/targets.jam
===================================================================
RCS file: /cvsroot/boost/boost/tools/build/v2/build/targets.jam,v
retrieving revision 1.204
diff -u -p -r1.204 targets.jam
--- build/targets.jam	8 Nov 2006 09:07:01 -0000	1.204
+++ build/targets.jam	15 Nov 2006 19:49:37 -0000
@@ -82,6 +82,7 @@ import path ;
 import set ;
 import assert ;
 import indirect ;
+import toolset ;
 
 # Base class for all abstract targets.
 class abstract-target 
@@ -1408,6 +1409,8 @@ rule main-target-requirements ( 
   : project       # Project where the main target is to be declared
       )
 {
+    specification += [ toolset.requirements ] ;
+    
     local requirements = [ property-set.refine-from-user-input 
         [ $(project).get requirements ] : $(specification) :
         [ $(project).project-module ] : [ $(project).get location ] ] ;
Index: build/toolset.jam
===================================================================
RCS file: /cvsroot/boost/boost/tools/build/v2/build/toolset.jam,v
retrieving revision 1.41
diff -u -p -r1.41 toolset.jam
--- build/toolset.jam	5 Nov 2006 06:40:20 -0000	1.41
+++ build/toolset.jam	15 Nov 2006 19:49:37 -0000
@@ -465,7 +465,23 @@ rule inherit-rules ( toolset : base )
     IMPORT $(toolset) : $(rules) : : $(toolset).$(rules) ;
 }
 
+# Return the list of global 'toolset requirements'.
+# Those requirements will be automatically added to
+# the requirements of any main target.
+rule requirements ( )
+{
+    return $(.requirements) ;
+}
 
+# Adds elements to the list of global 'toolset requirements'.
+# The requirements will be automatically added to the requirements
+# for all main targets, as if they were specified literally.
+# For best results, all requirements added should be conditional or
+# indirect conditional.
+rule add-requirements ( requirements * )
+{
+    .requirements += $(requirements) ;
+}
 
 local rule __test__ ( )
 {
Index: tools/cw.jam
===================================================================
RCS file: /cvsroot/boost/boost/tools/build/v2/tools/cw.jam,v
retrieving revision 1.15
diff -u -p -r1.15 cw.jam
--- tools/cw.jam	12 Sep 2006 22:31:14 -0000	1.15
+++ tools/cw.jam	15 Nov 2006 19:49:37 -0000
@@ -23,6 +23,8 @@ if [ MATCH (--debug-configuration) : [ m
 
 feature.extend toolset : cw ;
 
+toolset.add-requirements <toolset>cw,<runtime-link>shared:<threading>multi ;
+
 nl = "
 " ;
 
Index: tools/intel-win.jam
===================================================================
RCS file: /cvsroot/boost/boost/tools/build/v2/tools/intel-win.jam,v
retrieving revision 1.12
diff -u -p -r1.12 intel-win.jam
--- tools/intel-win.jam	12 Sep 2006 09:28:11 -0000	1.12
+++ tools/intel-win.jam	15 Nov 2006 19:49:37 -0000
@@ -22,6 +22,8 @@ toolset.inherit-generators intel-win <to
 toolset.inherit-flags intel-win : msvc ;
 toolset.inherit-rules intel-win : msvc ;
 
+toolset.add-requirements <toolset>intel-win,<runtime-link>shared:<threading>multi ;
+
 # Initializes the intel toolset for windows
 rule init ( version ? :     # the compiler version
             command * :     # the command to invoke the compiler itself
Index: tools/msvc.jam
===================================================================
RCS file: /cvsroot/boost/boost/tools/build/v2/tools/msvc.jam,v
retrieving revision 1.94
diff -u -p -r1.94 msvc.jam
--- tools/msvc.jam	26 Oct 2006 09:10:10 -0000	1.94
+++ tools/msvc.jam	15 Nov 2006 19:49:38 -0000
@@ -47,6 +47,10 @@ toolset.inherit-flags msvc : midl ;
 # Inherit MC flags
 toolset.inherit-flags msvc : mc ;
 
+# Dynamic runtime comes only in MT flavour.
+toolset.add-requirements <toolset>msvc,<runtime-link>shared:<threading>multi ;
+
+
 RM =  [ common.rm-command ] ;
 nl = "
 " ;