Re: [Boost-build] How do I change compiler?

From: Rene Rivera (grafikrobot_at_[hidden])
Date: 2007-11-09 00:14:44

Sergey Nik wrote:
> Volodya,
> 
> Yes. I _don't know what the exact platform behavior is_.
> I suspect you should know more about as an expert in build tools.
> 
> What I know exactly that when you build cross-tool for specific
> platform, you also build the bintools for that platform.
> And when you run "ar" from command line the following output can be seen:
> 
> example for Mgw
> ar: supported targets: pe-i386 pei-i386 elf32-i386 elf32-little
> elf32-big srec symbolsrec tekhex binary ihex
> 
> example for arm-linux
> arm-linux-ar: supported targets: elf32-littlearm elf32-bigarm
> elf32-little elf32-big srec symbolsrec tekhex binary ihex

Sure... But the logic that gcc.jam uses to determine which "ar" to use 
goes something like this:

1. Use the ar program specified in the <archiver> option.
2. Use the "ar" program in the bin directory of the given g++.
3. Use the "ar" program in the system search path.

So if you use the common cross-compile setup of building binutils into a 
tree localized for the specific target machine, i.e. in which you would 
have a bin/ar and bin/g++, BBv2 would automatically work with a simple:

   using gcc : : /path/to/arm-linux-cross-gcc/bin/g++ ;

Anything other than that requires that you tell BBv2 what the 
non-standard name for the various programs is. As anything else would 
require reading the users mind. And sadly, we don't have access to that 
kind of hardware and software.

-- 
-- Grafik - Don't Assume Anything
-- Redshift Software, Inc. - http://redshift-software.com
-- rrivera/acm.org - grafik/redshift-software.com
-- 102708583/icq - grafikrobot/aim - grafikrobot/yahoo