No moc file generation

[p_george]

I was working on a project that compiled well. After adding class and
methods, configure and make processes seem OK, but at linking it
complains of missing symbols (QPaintDevice virtual table, etc.).
These symbols correspond to those of *.moc.cpp files, which in fact are
not generated. I tried 'make distclean' , manually made aclocal,
autoconf, automake and so on... but without any success.

So, how to make the project generate automatically the moc files ?

Thanks.