[Boost-build] Ubuntu build problem

Subject: [Boost-build] Ubuntu build problem
From: Ian Emmons (iemmons_at_[hidden])
Date: 2009-10-05 08:33:43

I have a fairly complex piece of software that I build with  
Boost.Build on both Windows and Macintosh (with both 32- and 64-bit  
builds on each).  I recently decided to add Linux to my platform  
repertoire, so I got Ubuntu 9.04 64-bit installed.  I verified that I  
can build hello-world as both 32- and 64-bit by invoking g++ directly  
with the -m32 and -m64 switches.  However, when I try to build using  
Boost.Build, with address-model=32,64 on the command line, I get two  
64-bit executables, one in bin/.../address-model-32 and the other in  
bin/.../address-model-64.  (I am using the "file" command to check the  
executables' bit-ness.)

By invoking bjam with the -n switch, I can see the g++ command lines,  
which differ only in the number used in the address-model-NN portion  
of the path names.  There is no -m32 or -m64 switch issued from  
Boost.Build.  What's am I doing wrong?

I am using bjam 3.1.16 and the version of Boost.Build that ships with  
Boost 1.38.0.  My toolset is fixed in user-config.jam using the command

    using gcc ;

Thanks in advance,

Ian