trying to build openjdk in linux os getting errors

[ramakanth varala]

i downloaded openjdk-6-6b18-1.8.1.orig to my linux pc.

when i tried to do ./configure it shows following error


checking whether we are using the GNU C++ compiler... yes
checking whether g++ accepts -g... yes
checking dependency style of g++... none
checking for make... /usr/bin/make
checking for gzip... /bin/gzip
checking for ant... no
configure: error: ant program not found in PATH

where as i have ant in my class path .  i donot understand how to move
forward from here ..
can any body help me here