Error in compiling

Hi.

I'm trying to compile the postgreSQL on a Sun Sparc5 with Solaris 2.6 ... the first hint (installing bison) took me further ... but now another error occurs:

make[3]: Leaving directory `/usr/share/src/pgsql/src/interfaces/ecpg/lib'
/usr/local/bin/make -C preproc all
make[3]: Entering directory `/usr/share/src/pgsql/src/interfaces/ecpg/preproc'
/usr/local/bin/bison -y -d preproc.y
gcc -I../../../include -I../../../backend -Wall -Wmissing-prototypes -I../include -DMAJOR_VERSION=1 -DMINOR_VERSION=1 -DPATCHLEVEL=0 -DINCLUDE_PATH=\"/usr/local/pgsql/include\" -c y.tab.c
/usr/local/share/bison.simple: In function `yyparse':
/usr/local/share/bison.simple:377: warning: implicit declaration of function `yylex'
lex -t pgc.l > pgc.c
"pgc.l":line 26: Error: missing translation value
make[3]: *** [pgc.c] Error 1
make[3]: Leaving directory `/usr/share/src/pgsql/src/interfaces/ecpg/preproc'
make[2]: *** [all] Error 2
make[2]: Leaving directory `/usr/share/src/pgsql/src/interfaces/ecpg'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/usr/share/src/pgsql/src/interfaces'
make: *** [all] Error 2

can someone help me any further?

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