$NetBSD: patch-boostcpp.jam,v 1.4 2019/07/01 04:00:10 ryoon Exp $

Find pkgsrc libraries.
Allow exclusion of all libraries.

--- boostcpp.jam.orig	2019-04-09 19:35:15.000000000 +0000
+++ boostcpp.jam
@@ -520,6 +520,10 @@ rule libraries-to-install ( existing-lib
     {
         EXIT error\: both --with-<library> and --without-<library> specified ;
     }
+    if $(without-parameter) && $(without-parameter) = "*"
+    {
+        without-parameter = $(existing-libs) ;
+    }
 
     local wrong = [ set.difference $(with-parameter) : $(existing-libs) ] ;
     if $(wrong)