[boost] [thread] build path names change

From: Juergen Hunold (juergen.hunold_at_[hidden])
Date: 2007-10-23 12:14:15

Hi Anthony !

The latest change to Boost.Thread:
URL: http://svn.boost.org/trac/boost/changeset/40348

introduced 
"feature.feature thrd-api"
as "symmetric" feature, adding "thrd-api-pthread" to the build paths on 
linux. I'd like to have it asymmetric, so build paths will be as short 
as possible. The problem with the "symmetric" property is that you 
can't use "feature.set-default" to change the default value so the path 
element will disappear.
Please find "thread.diff" with propose patch attached.
Also thread.txt with output without patch and thread2.txt will patched 
Jamfile.v2.
The other thing I noticed is the usage of "os.name" to distinguish 
between nt/unix/cygwin. I think this should use "target-os" in order to 
enable cross-compilation, but I don't know how to code this.
Therefore cross-post to Boost.Build list in order to get some pointer on 
how to change 
if [ os.name ] = NT

to 
if target-os = windows

or something similar.

Yours,

Jürgen
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