compile problems

[Gerald Nelson]

I'm compiling Grass4.1 for linux, update 5.  The compile crashes at 2
unexpected places
1. r.combine reports an undefined symbol yyinput in gis_lxcl.0.
2. i.tape.spot reports lots of undefined symbols and refers to 
/usr/lib/libcurses.a(cr_tty.o)

In addition the following contributed scripts crash - r.rvi, r.traj, NPS/area
and distance.

I'm using gcc 2.5.8.

Any suggestions for cures?

Jerry Nelson
PS The rest of Grass seems to run fine, and monitors start a lot more
quickly.