Index: Makefile.in
===================================================================
diff -u -N -r55961d58283d323283c13b4d3c235a7a81844724 -rb820ed696bdcb35268fe39d0ddcac58d045bb6ee
--- Makefile.in	(.../Makefile.in)	(revision 55961d58283d323283c13b4d3c235a7a81844724)
+++ Makefile.in	(.../Makefile.in)	(revision b820ed696bdcb35268fe39d0ddcac58d045bb6ee)
@@ -221,7 +221,8 @@
 TCLSH_ENV	= TCL_LIBRARY=`@CYGPATH@ $(TCL_SRC_DIR)/library` \
 		  @LD_LIBRARY_PATH_VAR@="$(EXTRA_PATH):$(@LD_LIBRARY_PATH_VAR@)" \
 		  PATH="$(EXTRA_PATH):$(PATH)" \
-		  TCLLIBPATH="$(top_builddir) ${srcdir} $(TCLLIBPATH)"
+		  TCLLIBPATH="$(top_builddir) ${srcdir} $(TCLLIBPATH)" \
+		  TCL_PKG_PREFER_LATEST=1
 TCLSH_PROG	= @TCLSH_PROG@
 TCLSH		= $(TCLSH_ENV) $(TCLSH_PROG)
 #TCLSH		= $(TCLSH_ENV) LD_PRELOAD="$(srcdir)/$(PKG_LIB_FILE)" valgrind --log-fd=9 --leak-check=full --track-origins=yes --show-possibly-lost=no $(TCLSH_PROG) 9>>valgrind.out
Index: win/makefile.vc
===================================================================
diff -u -N -r983e085ea908a6ced9961e8f65da6eec6621cfe6 -rb820ed696bdcb35268fe39d0ddcac58d045bb6ee
--- win/makefile.vc	(.../makefile.vc)	(revision 983e085ea908a6ced9961e8f65da6eec6621cfe6)
+++ win/makefile.vc	(.../makefile.vc)	(revision b820ed696bdcb35268fe39d0ddcac58d045bb6ee)
@@ -410,6 +410,7 @@
 test: setup $(PROJECT)
 	@set TCL_LIBRARY=$(TCL_LIBRARY:\=/)
 	@set TCLLIBPATH=.
+	@set TCL_PKG_PREFER_LATEST=1
 
 	@$(CPY) $(ROOT)\library library /e
 !if $(TCLINSTALL)
@@ -437,6 +438,7 @@
 	@set VLERQ_LIBRARY=$(LIBDIR:\=/)
 	@set TCL_LIBRARY=$(TCL_LIBRARY:\=/)
 	@set TCLLIBPATH=.
+	@set TCL_PKG_PREFER_LATEST=1
 !if $(TCLINSTALL)
 	@set PATH=$(_TCLDIR)\bin;$(PATH)
 !else
@@ -517,6 +519,7 @@
 #-------------------------------------------------------------------------
 
 $(OUT_DIR)\pkgIndex.tcl:
+	@set TCL_PKG_PREFER_LATEST=1
 	@echo package ifneeded $(PROJECT) $(DOTVERSION) \
 	    [list load [file join $$dir $(PRJLIBNAME)] $(PROJECT)] > $@