[Boost-build] Selecting library by requirements <address-model> and <target-os>

Subject: [Boost-build] Selecting library by requirements <address-model> and <target-os>
From: Klemens Morgenstern (klemens.morgenstern_at_[hidden])
Date: 2016-06-06 10:03:24

Hi,

for my project, I need to select a static library, based on the 
address-model (or architecture) and target-os, since I am 
cross-compiling. I'm trying this

lib ftd2xx : : <file>win/x32/ftd2xx.lib    <target-os>windows 
<address-model>32 <link>static ;
lib ftd2xx : : <file>win/x64/ftd2xx.lib    <target-os>windows 
<address-model>64 <link>static ;
lib ftd2xx : : <file>linux/x32/libftd2xx.a <target-os>linux 
<address-model>32 <link>static ;
lib ftd2xx : : <file>linux/x64/libftd2xx.a <target-os>linux 
<address-model>64 <link>static ;

lib ftdi : category.cpp device.cpp ftd2xx : <link>shared ;

but this only gives me this error

error: No best alternative for ./ftd2xx
     next alternative: required properties: <address-model>32 
<link>static <target-os>windows
         not matched
     next alternative: required properties: <address-model>64 
<link>static <target-os>windows
         not matched
     next alternative: required properties: <address-model>32 
<link>static <target-os>linux
         not matched
     next alternative: required properties: <address-model>64 
<link>static <target-os>linux
         not matched

and does result in no linking of any of those libraries for ftdi.

What am I missing?

Thanks,

Klemens