Re: [Boost-build] Problem using cast

From: Vladimir Prus (ghost_at_[hidden])
Date: 2006-02-14 03:54:14

Hi Daniel,

> type.register CUSTOMERINFO : : CPP ; and use a cast to make my generator be 
invoked:
>
> cpp customerinfo.cpp
>
>     : # sources
>
>         [ cast _ CUSTOMERINFO : defaultcustomerinfo.cpp ]
>         #defaultcustomerinfo.cpp_to_sed
>     ;
>
> But I get a missing argument error when I try this:
>
> C:/bin/buildtools/boost-build/kernel\class.jam:92: in new
> *** argument error
> * rule object(cast-target-class)@77.__init__ ( name : project : type :
.......
> * missing argument type

You've run into a dirty part of V2. For some reason, the 'cast' rule expects 
you to provide *main target rule* name, not the exact type. And for all 
defined types, you automatically get main target rule with the same name, but 
lowercased. So, 

   [ cast _ customerinfo : defaultcustomerinfo.cpp ]

should work. Originally I though that using rule names will be more friendly 
to users -- end users might not know about types at all, only about main 
target rule names. But not I'm not sure, maybe we should use the type name 
for cast -- like CPP, EXE or LIB. Comments welcome.

- Volodya