CFLAGS="-O3 -march=pentium4" 
CXX=gcc 
CXXFLAGS="-O3 -march=pentium4 -felide-constructors -fno-exceptions -fno-rtti" 
./configure --prefix=/usr/local/mysql/4.0.20 \
--localstatedir=/dbroot/mysql/4.0.20/data \
--sysconfdir=/etc/mysql/4.0.20 \
--with-tcp-port=3306 \
--with-unix-socket-path=/dbroot/mysql/4.0.20/var/mysql.sock \
--without-debug \
--without-docs \
--with-mysqld-user=mysql \
--enable-assembler \
--with-mysqld-ldflags=-all-static