Re: Conditional including library based on platform

From: jdve21 (jonathanve_at_[hidden])
Date: 2005-05-19 14:53:14

Hi,

I'm using V1...what's the equivalent way to achieve the same thing
(conditional based on platform)?

Thanks!

Jonathan 

--- In jamboost_at_[hidden], "jjanzer0" <yahoo_at_l...> wrote:
> I hate to be such a pain in the ass but I'm having some trouble using
> the solution:
> 
> lib lwsock32 : : <name>wsock32:<os>NT ;
> 
> that line generates an error on my linux machine:
> "error: "NT" is not a known value of feature <os>"
> 
> I googled around a bit but couldn't find any instance of the error
> code, and the irc channel is pretty quiet.
> 
> Any thoughts, I've already done "import os ;" above it?
> 
> --- In jamboost_at_[hidden], "Pedro Ferreira"
> <pedro.ferreira_at_m...> wrote:
> > 
> > ----- Original Message ----- 
> > From: "jjanzer0" <yahoo_at_l...>
> > To: <jamboost_at_[hidden]>
> > Sent: Thursday, May 19, 2005 6:47 PM
> > Subject: [jamboost] Re: Conditional including library based on
> platform
> > 
> > 
> > >I have no problem using whatever it needs to get it done, I'm still
> > > learning this system out (I have a lot more experience with GNU's
> > > utils) and just having a hard time in general with the
> documentation.
> > > 
> > > I think my problem is that I don't really understand how alias
> will
> > > help me, I've read:
> > > http://boost.sourceforge.net/boost-build2/doc/html
> > > /bbv2/advanced/builtins/targets.html#bbv2.builtins.alias
> > > But it's much more of a general overview.
> > > 
> > > Also from the first example you sent you specified the
> conditional on
> > > toolset, but I don't think that's a good approach considering a
> > > windows user might be using the toolset "gcc" instead of something
> > > obvious like msvc.
> > 
> > You can select on whatever condition you see fit, e.g.:
> > 
> > lib lwsock32 : : <name>wsock32 <os>NT ;
> > alias lwsock32 ;
> > 
> > This will use the lib on Windows and nothing elsewhere.
> > 
> > Pedro
> > 
> > 
> > > Perhaps the problem could really be solved by reading
> documentation
> > > but I'm having a hard time finding a good set of docs with
> tutorials
> > > examples etc... for V2.
> > > 
> > > Any suggestions or pointers would be greatly appreciated.
> > > 
> > > --- In jamboost_at_[hidden], "Pedro Ferreira"
> > > <pedro.ferreira_at_m...> wrote:
> > >> > Ok I think I'm almost there now... I just have one more
> question.
> > > I
> > >> > get an error if lwsock32-name is empty during the call:
> > >> > lib lwsock32 : : <name>$(lwsock32-name) ;
> > >> > "
> > >> > *** argument error
> > >> > * rule object(linking-generator)@2.run ( project name ? :
> > > property-set
> > >> > : sources + : multiple ? )
> > >> > * called with: ( Jamfile</home/zeta/code/lanthera/src/client>
> > > lwsock32
> > >> > : object(property-set)@15 : : )
> > >> > * missing argument sources
> > >> > "
> > >> >
> > >> > if i set the condtion that I test for LINUX to any value it
> > > compiles
> > >> > fine, but I'd prefer not to have any value set... like I want
> > > lwsock32
> > >> > to really just be NULL, does that make sense?
> > >> 
> > >> Right... and this is a tricky one: you can't declare a lib that
> > > neither has 
> > >> a <name> nor sources. That's why I initially proposed to use an
> > > alias.
> > >> Is there a problem for you to use an alias? We do it here all the
> > > time and 
> > >> it works really well.
> > >> 
> > >> Pedro
> > > 
> > > 
> > > 
> > > 
> > > 
> > > Yahoo! Groups Links
> > > 
> > > 
> > > 
> > > 
> > > 
> > >