"make: don't know how to make clean." in math/wxmaxima

[Jona Joachim]

This is kind of strange:

/usr/ports/math/wxMaxima> sudo make clean
===>  Cleaning for pkg-config-0.20_3
===>  Cleaning for wxgtk2-unicode-2.6.3
===>  Cleaning for gettext-0.14.5_2
===>  Cleaning for libxml2-2.6.26
===>  Cleaning for maxima-5.9.3
===>  Cleaning for gmake-3.81_1
===>  Cleaning for gstreamer-plugins80-0.8.12_3
===>  Cleaning for intltool-0.35.0
===>  Cleaning for png-1.2.12_1
===>  Cleaning for jpeg-6b_4
===>  Cleaning for tiff-3.8.2
===>  Cleaning for expat-2.0.0_1
===>  Cleaning for libmspack-0.0.20040308_3
===>  Cleaning for libiconv-1.9.2_2
===>  Cleaning for atk-1.11.4_1
===>  Cleaning for glib-2.10.3
===>  Cleaning for gtk-2.8.20
===>  Cleaning for pango-1.12.3
===>  Cleaning for xorg-libraries-6.9.0
===>  Cleaning for wxgtk2-common-2.6.3
===>  Cleaning for libtool-1.5.22_2
===>  Cleaning for automake-1.9.6
===>  Cleaning for autoconf-2.59_2
===>  Cleaning for tk-8.4.13,2
make: don't know how to make clean. Stop
*** Error code 2

Stop in /usr/ports/math/wxMaxima.
*** Error code 1

Stop in /usr/ports/math/wxMaxima.


I never experienced this before.

P.S. The port should also be fixed to use
  USE_WX=		2.6
  WX_UNICODE=	yes
instead of defining
  WXGTK_CONFIG?=	${X11BASE}/bin/wxgtk2u-2.6-config
manually

--jona