Hi and welcome to LQ.
There is no need to run builconf.sh if you are using the source code from the jakarta project. It's used only when you are using source code from cvs to create the ./configure script. So, to install mod_jk you have to run:
Code:
./configure --with-apxs=/path/to/apache/bin/apxs
BTW, you should tell a mod to move your post from this forum to another one more suitable, since it has nothing to do with the linux kernel.
Regards