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Thread: python.jam: init's condition parameter, extra-libs-conditional




python.jam: init's condition parameter, extra-libs-conditional
user name
2006-09-29 15:54:37
What the heck is this condition parameter supposed to do? 
There's no
documentation at all, and the name really gives me no clue
as to what
it's for.  It appears to be gcc-specific?

The same sort of bafflement goes for cygwin-condition

-- 
Dave Abrahams
Boost Consulting
www.boost-consulting.com

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python.jam: init's condition parameter, extra-libs-conditional
user name
2006-09-30 09:35:53
On Friday 29 September 2006 19:54, David Abrahams wrote:
> What the heck is this condition parameter supposed to
do?  

There's no such parameter. Do you mean
'extra-lib-conditional' variable in 
init-unix? If yes, commented as attached.

> There's no 
> documentation at all, and the name really gives me no
clue as to what
> it's for.  It appears to be gcc-specific?

If you mean the 'condition' parameter to init-unix, this is
meant to allow one 
to specify specific condition under which the configured
version of Python 
will be used. So that you can configure two python versions
which will be 
used for different build properties, just like alternatives
mechanism allow. 
I don't remember exactly why it was added, either building
32 and 64-bit 
tests, or something like that.

>
> The same sort of bafflement goes for cygwin-condition

Originally meant so that you can configure Python
differently for cygwin and 
native windows compilers. Essentially the same as condition
to 'init-unix', 
but never tested.

- Volodya



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