Re: [jamboost] problem with -fPIC flag

From: Vladimir Prus (ghost_at_[hidden])
Date: 2005-01-20 07:33:34

Hi Toon,
> If you create a library from object files (that are listed in the
> Jamfile explicitly), the -fPIC flag is not used when compiling a shared
> library (I'm using the gcc toolset)
.......
> The solution I see is adding following to gcc.jam
> <quote>
> if [ os.name ] != CYGWIN && [ os.name ] != NT
> {
> flags gcc.compile OPTIONS <link>shared/<main-target-type>LIB : -fPIC ;
> + flags gcc.compile OPTIONS <link>shared/<main-target-type>OBJ : -fPIC ;
> }
> </quote>
>
> Can anybody tell me if this is indeed the way to go?

Looks like a reasonable solution for me. The downside is that now all targets 
defined with "obj" will be compiled with -fPIC, not only when they are part 
of a shared library.

This can be avoided by using some new <shared-linkable> property but target 
paths will become even longer. When I introduce automatic computation if 
properties relevant to a target, this might not be a problem, but until now, 
the above code seems the most reasonable.

- Volodya