[Boost-build] Troubles when trying to cross compile boost 1.3.6 serialization package on CYGWIN for PowerPC

Subject: [Boost-build] Troubles when trying to cross compile boost 1.3.6 serialization package on CYGWIN for PowerPC
From: Ivo Faldini (Ivo.Faldini_at_[hidden])
Date: 2008-10-26 14:02:10

Hi,
        After a lot of digging the docs + search, I was able ( I hope )
to compile regex + serialization package for powerPC, 
of course I needed to "hack"/change gcc.jam in order to "bypass" the
-mthreads/-Wl --out-implib options that are injected when it detects
CYGWIN and are wrong for the gcc cross compiler...
        I also had troubles with the serialization package that failed
to build when trying to build test packages ( as my understanding it are
not relevant on cross platform builds) and I was forced to remove test
parts from Jamfile.v2 in serialization package.
        Now I still have a problem that I didn't solved yet and I would
like to ask: packages are built with .dll suffix instead of .so suffix.
I would like to know how to instruct bjam to use .so suffix instead of
.dll sufix ( I don't want to only rename the *.dll into *.so because I
don't know is it is enough)?
( My host environment is CYGWIN and I'm cross-compiling for PowerPC, I
don't have a native compiler that I can invoke from our PowerPC embedded
device). 

Ivo Faldini