<p>I've built the x86 Boost libraries many times, but I can't seem to build x64 libraries. I start the "Visual Studio 2005 x64 Cross Tools Command Prompt" and run my usual build:</p>

<pre><code>bjam --toolset=msvc --build-type=complete --build-dir=c:\build install
</code></pre>

<p>But it still produces x86 .lib files (I verified this with dumpbin /headers).
What am I doing wrong?</p>

You need to add the
```
address-model=64
```
parameter.
Look e.g.
here
.