When emerging otter, it fails because it can't find libXm. Installing openmotif fixes it (as openmotif provides said library). Therefore otter needs to depend on openmotif. The error message is lost, but here is the snippet from the working build, that it indeed links against libXm: x86_64-pc-linux-gnu-gcc -O2 -pipe -march=native -mno-avx -DTP_NAMES -DTP_SIGNAL -DTP_FORK -DTP_RUSAGE -DTP_NAMES -DTP_SIGNAL -DTP_FORK -DTP_RUSAGE -Wl,-O1 -Wl,--as-needed formed.o display.o callback.o \ ../libotter.a -L/usr/X11R6/lib -lXaw -lXm -lXt -lX11 -o formed
+ 16 Jul 2011; Justin Lecher <jlec@gentoo.org> files/otter-3.3-gold.patch: + Remove unneeded linking against libXm, #373701 +