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## 3. Compiling BIND

You should be able to find the BIND source by visiting http://www.isc.org/bind.html. You need the `bind-src.tar.gz` package. Be sure to get the latest version!

## 3.1 Modifying Paths

Things can get a bit confusing at this point, because different parts of the BIND package will be referring to the same directories by different names (depending on whether or not they're running inside the jail). I'll try not to confuse you too much :-).

The main directory that we have to worry about here is `/var/run`, because its contents are required for both the main `named` daemon (inside the jail), and the `ndc` utility (on the outside). We'll start by setting everything up to find this directory from the outside world. To do this, we need to modify `src/port/linux/Makefile.set` (substitute your port's directory if you're not running Linux), and change the line

> `

>     DESTRUN=/var/run

> `

to

> `

>     DESTRUN=/chroot/named/var/run

> `

While you're in there, you may want to change the other destination paths from `/usr` to `/usr/local`.

Now everything should be able to find that directory... except the `named` daemon itself, to which it's still just `/var/run` inside the jail. We can get around this by making a small change in the `named` source. In the file `src/bin/named/named.h`, find the line

> `

>     #include "pathnames.h"

> `

and add the following line immediately after it

> `

>     #define _PATH_NDCSOCK    "/var/run/ndc"

> `

This way, `named` will ignore our definition of `DESTRUN` over in `Makefile.set` and use the correct location (from its perspective in the chroot jail). You will notice some warnings about redefinitions of _PATH_NDCSOCK when you do the build; just ignore them.

## 3.2 Doing the Build

You should now be able to compile BIND as normal, following the instructions in the `INSTALL` file. At this stage, we only want to compile BIND, not install it. Don't go too far when following the `INSTALL` file. Essentially, it's just `make clean`, `make depend`, and `make`.

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