question about -rpath

[Ted Irons]

Starting with

[187.virgo.image_wish] make image_sh
/bin/sh ../../libtool --mode=link g++ ...
../../src/libsdts++/libsdts++.la -L/postfix/dev/pipes/Linux-2.4/lib -lhrnet 
-lregion -lseg -lutil -L/postfix/dev/gfiles/Linux-2.4/lib -lgf -llists 
-L/postfix/dev/tcl/Linux-2.4/lib -ltk -ltcl -L/usr/X11/lib -lXmu -lX11 -ldl -lm 
-lnsl -lm

we get the following; but why is there
no -Wl,--rpath  -Wl,/postfix/dev/tcl/Linux-2.4 in the following?

g++ ...
-L/postfix/dev/pipes/Linux-2.4/lib /postfix/dev/pipes/Linux-2.4/lib/libhrnet.so 
/postfix/dev/pipes/Linux-2.4/lib/libregion.so 
/postfix/dev/pipes/Linux-2.4/lib/libseg.so 
/postfix/dev/pipes/Linux-2.4/lib/libutil.so 
/postfix/dev/gfiles/Linux-2.4/lib/libgf.so -lstdc++ -lc -lgcc 
/postfix/dev/gfiles/Linux-2.4/lib/liblists.so -ltk -ltcl -lXmu -lX11 -ldl -lnsl 
-lm -Wl,--rpath -Wl,/postfix/dev/tips/Linux-2.4/lib -Wl,--rpath 
-Wl,/postfix/dev/nitf/Linux-2.4/lib -Wl,--rpath 
-Wl,/postfix/dev/pipes/Linux-2.4/lib
-Wl,--rpath -Wl,/postfix/dev/gfiles/Linux-2.4/lib
creating image_sh

It is true that libhrnet.so,eg,  was created with libtool; but libtk.so was not.

Thanks in advance,
- Ted