[GRASSLIST:2978] r.mapcalc

Dear user GRASS...
I'm using grass 5.3 CVS snap and I have this problem: r.mapcalc is not
compilated by default so I go in directory of source of r.mapcalc and I do
"gmake53" and I have an error...
below there are last rows...

make[1]: Entering directory
`/home/ivan/Documents/grass-CVS-snap/grass53_exp_2004_03_13/src/raster/r.mapcalc/polish'
bison -y -d pol.y
conflicts: 14 shift/reduce, 17 reduce/reduce
make[1]: *** [y.tab.c] Broken pipe
make[1]: Leaving directory
`/home/ivan/Documents/grass-CVS-snap/grass53_exp_2004_03_13/src/raster/r.mapcalc/polish'
make: *** [all] Error 1

so I haven't mapcalc on my grass...

P.S. I noticed inside directory r.mapcalc there is a file "DEPRECATED" ... it
says : the new version is r.mapcalc3!!
But when I compile r.mapcalc3 I find the same error that above!!

Who may help me??

Thanks in advance

Pierluigi