I have succeeded in compiling pythonica on Ubuntu 14.04. I need to add -lpthread -lm to the command line.
## Ununtu 14.04
LIBS = -L${LIBDIR} ${LIBDIR}/libML64i3.a -lstdc++ -lpthread -lm -lrt -lpython${PYTHON_VERSION_MAJOR}.${PYTHON_VERSION_MINOR}
Thanks,
Yoshihiro Sato