does (new) libXmu need libICE?

["Erik Bertelsen" <bertelsen.erik%gmail.com@localhost>]

NetBSD/i386-current as of yesterday.
pkgsrc as of yesterday

After recent updates including several to X libraries including
libXmu, I tried to catch up with pkg_chk -u and see:

...
===> Installing dependencies for libXaw-1.0.4
=> Build dependency libtool-base>=1.5.18nb5: found libtool-base-1.5.24nb5
=> Build dependency pkg-config>=0.19: found pkg-config-0.22
=> Build dependency printproto>=1.0.3: found printproto-1.0.3
=> Build dependency kbproto>=1.0.2: found kbproto-1.0.3
=> Build dependency xextproto>=7.0: found xextproto-7.0.2
=> Build dependency inputproto>=1.4: found inputproto-1.4.2.1
=> Build dependency xproto>=7.0.9: found xproto-7.0.11
=> Full dependency libXmu>=1.0.0: NOT found
=> Verifying update for ../../x11/libXmu
===> Resuming update for libXmu-1.0.4
=> Bootstrap dependency digest>=20010302: found digest-20070803
===> Creating toolchain wrappers for libXmu-1.0.4
ERROR: libICE is not installed; can't buildlink files.
*** Error code 1

Stop.
make: stopped in /home/NetBSD/pkgsrc/x11/libXmu
*** Error code 1

Stop.
make: stopped in /home/NetBSD/pkgsrc/x11/libXmu
*** Error code 1

Stop.
make: stopped in /home/NetBSD/pkgsrc/x11/libXmu
*** Error code 1

Stop.
make: stopped in /home/NetBSD/pkgsrc/x11/libXaw
*** Error code 1

Stop.
make: stopped in /home/NetBSD/pkgsrc/x11/libXaw
...

Adding .include "../../x11/libICE/buildlink3.mk" to libXmu's Makefile
seems to cure the problem at least in my setup.

best regards
- Erik