make distcheck is failing for me.
gcc -g -O2 -I/usr/X11R6/include -g -o .libs/mwm colormaps.o cursors.o
decorate.o defaults.o desktop.o events.o functions.o icons.o menus.o misc.o
move.o mwm.o mwmerr.o mwmparse.o mwmlex.o pager.o pan.o props.o resize.o
resources.o screens.o windows.o ../../../lib/Xm-2.1/.libs/libXm.so
-L/usr/X11R6/lib -lXt -lSM -lICE -lXext -lX11 -Wl,--rpath
-Wl,/hdc1/home/rwscott/tmp/lesstif/lesstif-0.91.27/=inst/LessTif/Motif2.1/lib
../../../lib/Xm-2.1/.libs/libXm.so: undefined reference to `XpQueryVersion'
collect2: ld returned 1 exit status
make[4]: *** [mwm] Error 1
make[4]: Leaving directory
`/hdc1/home/rwscott/tmp/lesstif/lesstif-0.91.27/=build/clients/Motif-1.2/mwm'
