--- configure.orig	2013-06-03 19:29:08.000000000 +0200
+++ configure	2014-01-17 18:06:08.000000000 +0100
@@ -2927,6 +2927,7 @@
 	    SHLIB_CFLAGS="-fPIC"
 	    SHLIB_LD="${CC} -shared"
 	    TCL_SHLIB_LD_EXTRAS="-Wl,-soname,\$@"
+	    TK_SHLIB_LD_EXTRAS="-Wl,-soname,\$@"
 	    SHLIB_SUFFIX=".so"
 	    DL_OBJS="tclLoadDl.o"
 	    DL_LIBS=""
@@ -3418,6 +3419,7 @@
 #define _POSIX_PTHREAD_SEMANTICS 1
 EOF
 
+TCL_SRC_DIR=${prefix}/include/tcl${TCLVERSION}
 
 	    SHLIB_CFLAGS="-KPIC"