math_factory.C:223: undefined reference to `MathFrameboxInset::MathFrameboxInset(void)'

[R. Lahaye]

CVS doesn't compile:

mathed/.libs/libmathed.a(math_factory.o): In function 
`createMathInset(basic_string<char, string_char_traits<char>, 
__default_alloc_template<false, 0> > const &)':
/lyx-devel/src/mathed/math_factory.C:223: undefined reference to 
`MathFrameboxInset::MathFrameboxInset(void)'
gmake[3]: *** [lyx] Error 1

Rob.