Problem with Solaris 2.5.1

I tried to compile postgres 6.3.2 on a Sun sparc ultra 1 with solaris 2.5.1.
but did not succeed.
The log file looks like:

gmake[3]: Entering directory `/opt/pgsql/src/interfaces/ecpg/preproc'
lex -t pgc.l > pgc.c
"pgc.l":line 26: Error: missing translation value
gmake[3]: *** [pgc.c] Error 1
rm pgc.c
gmake[3]: Leaving directory `/opt/pgsql/src/interfaces/ecpg/preproc'
gmake[2]: *** [all] Error 2
gmake[2]: Leaving directory `/opt/pgsql/src/interfaces/ecpg'
gmake[1]: *** [all] Error 2
gmake[1]: Leaving directory `/opt/pgsql/src/interfaces'
gmake: *** [all] Error 2

I hope somebody can give me some advice to solve the problem.

Thanks by atention :).
Renato Mattosinho
renatom(at)embratel(dot)net(dot)br