Problem installing PHP4.0.1pl2

Hello, OK, after a few weeks i decided to upgrade to php4 from my "old" php3.0.16.... My server is Linux Mandrake 7.1, and I tried to install ./configure --with-apxs --with-mysql just like I did at the older versions (<php4) ... Now, I got this error message: "checking lex output file root... ./configure: lex: command not found configure: error: cannot find output from lex; giving up" OK, what the heck is lex and what should i do to solve it? Carpe Diem, - Leon (ICQ # 55677353) http://www.solatis.com/ <- free webmaster resources! http://www.coolguest.com/ <- free guestbooks for your site! http://www.ffalp.com/ <- create your own free mini-yahoo -=-=-=-=-=-=-=-=-=-=-=-=-=- Hit any user to continue -=-=-=-=-=-=-=-=-=-=-=-=-=-