Index: Makefile.in
==================================================================
--- Makefile.in
+++ Makefile.in
@@ -7,10 +7,11 @@
 LIBS = @LIBS@
 INSTALL = @INSTALL@
 PACKAGE_VERSION = @PACKAGE_VERSION@
 TCL_PACKAGE_PATH = @TCL_PACKAGE_PATH@
 PACKAGE_INSTALL_DIR = $(TCL_PACKAGE_PATH)/tcltls$(PACKAGE_VERSION)
+VPATH = @srcdir@
 
 all: @EXTENSION_TARGET@
 
 # The shared object target
 tcltls.@SHOBJEXT@: tls.o tlsBIO.o tlsIO.o tlsX509.o Makefile