From: Toon Knapen (toon.knapen_at_[hidden])
Date: 2005-01-20 08:28:44
Vladimir Prus wrote:
>>The solution I see is adding following to gcc.jam
>>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 ;
>>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.
Indeed I see that happen although I did not suspect it. IIUC the
'<link>shared' means that it should only be applied _if_ the OBJ is used
for a shared library, right ?
> 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.
Considering -fPIC can have a considereable influence on performance, I
guess we don't want to use the flag for compiling objects for static
libraries. Or do you think this is not an issue ?
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