How do I make Boost build for i386 on OS X 64 bit?

Question

I've been battling with Boost to make it compile as only 32 bit than 64 bit on a 64 bit OS X host.

Is there an easy edit I can make to the darwin-specific bjam config file?

Answer 1

For i386 specifically, I'd try:

bjam toolset=darwin architecture=x86 address-model=32

Answer 2

Try:

bjam toolset=darwin address-model=32