snapshot doesn't compile on linux

gcc -I../../include -I/usr/include/ncurses -I/usr/local/include/readline -O2 -m486 -Wall -Wmissing-prototypes -I.. -Wno-error -c scan.c -o scan.o
lex.yy.c:800: warning: no previous prototype for `yylex'
scan.l: In function `yylex':
scan.l:202: `ABORT' undeclared (first use this function)
scan.l:202: (Each undeclared identifier is reported only once
scan.l:202: for each function it appears in.)
scan.l: At top level:
scan.l:379: warning: no previous prototype for `yyerror'
scan.l: In function `yyerror':
scan.l:380: `ABORT' undeclared (first use this function)
lex.yy.c: At top level:
lex.yy.c:2103: warning: `yy_flex_realloc' defined but not used
make[2]: *** [scan.o] Error 1
make[2]: Leaving directory `/home/local/postgresql-pre.6.3/src/backend/parser'
make[1]: *** [parser.dir] Error 2
make[1]: Leaving directory `/home/local/postgresql-pre.6.3/src/backend'
make: *** [all] Error 2

--
Edmund Mergl mailto:E(dot)Mergl(at)bawue(dot)de
Im Haldenhau 9 http://www.bawue.de/~mergl
D 70565 Stuttgart fon: +49 711 747503
Germany gsm: +49 171 2645325