Index: tol/CMakeLists.txt
===================================================================
--- tol/CMakeLists.txt	(revision 03ff056d19e093762cb60fb9b2f505dceecd0ff2)
+++ tol/CMakeLists.txt	(revision 6cd7a489f73d7cff03132401d0fda1b1d29f0ae4)
@@ -483,8 +483,8 @@
   
   set( tcldirs "")
-  foreach( pdir tcl8 tk8 dde reg TclCurl )
+  foreach( pdir tcl8 tk8 dde reg TclCurl twapi )
     file( GLOB pdirx.y RELATIVE "${TOL_EXTERNAL_PREFIX}/lib" "${TOL_EXTERNAL_PREFIX}/lib/${pdir}*" )
 	list( APPEND tcldirs ${pdirx.y} )
-  endforeach( pdir tcl8 tk8 dde reg TclCurl )
+  endforeach( pdir tcl8 tk8 dde reg TclCurl twapi )
   list( GET tcldirs 0 tcldir0)
   if( NOT EXISTS "${CMAKE_INSTALL_PREFIX}/lib/${tcldir0}" )