How do I force a 32-bit build of Boost with GCC?

Question

How do I force a 32-bit build of Boost with GCC? Currently attempting by putting this line in my `user-config.jam`, but it does not work: ``` using gcc : 4.1.2 : g++ : compileflags="-m32" ; ```

Accepted Answer

If you are using C++ Boost 1.40, use:

```
bjam address-model=32
```

If you are using eariler version, consider upgrading. If you cannot, use

```
bjam address-model=32 architecture=x86
```

I also recommend that you take a look at the fine manual

How do I force a 32-bit build of Boost with GCC?

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