I'm trying to install php5 and I always get this error:

PHP Code:
checking for specified location of the MySQL UNIX socket... no
checking for MySQL UNIX socket location... no
configure: error: Cannot find MySQL header files under /usr/local/mysql/include.
Note that the MySQL client library is not bundled anymore! 
I have tried a number of directories other than /usr/local/mysql/include. I
I tried downloading mysql and copying the header files into /usr/local/mysql/include and thats the error I got. I know the header files are there because I can see them. I saw other debain users saying /usr/local/mysql worked for them, but it doesn't work for me. I tried searching for mysql.h but it wasn't even on my box until I downloaded mysql and put the headers in /usr/local/mysql/include.

Does anyone know how to fix this? Where are the header files on debian? I think if I knew where they were this would be a little easier to fix.

Don't say just use apt-get or something, because I need to install php5 manually. apt-get doesn't allow me to do what I need to do. I already tried doing it with apt-get and it wouldn't work. So don't ask questions about apt-get it will just be a waste of time for both of us.

Thank you for your time.