"Stephen R. Anderson" <sra(a)bloch.ling.yale.edu&gt; writes: [...] I think I see what is going on: 1) XEmacs configure process simply checks for `matherr' function, without actually verifying that it accepts `struct exception'. In my opinion, this is OK. 2) Under C++, `struct exception' cannot work, so XEmacs does not use HAVE_MATHERR at all. This is, again, OK. 3) One glibc snapshot contains math.h which has `struct exception' unconditionally removed. This is *not* OK. The right solution is to keep XEmacs sources the way they are, and let glibc people fix their header. If I understand correctly, this has already been done. -- Hrvoje Niksic <hniksic(a)srce.hr&gt; | Student at FER Zagreb, Croatia --------------------------------+-------------------------------- You have an unusual magnetic personality. Don't walk too close to metal objects which are not fastened down.