[opensource-dev] (was: gcc 4.7.1: lotsa warnings about boost)

[Boroondas Gupte]

On 06.01.2013 11:56, Lance Corrimal wrote:
> Whenever I'm building the current development source on openSUSE 12.2 (read: 
> with gcc 4.7.1) I get lots of warnings about boost-related things. Some of 
> them I've been able to correct myself, others I'm stumped... the causes seem 
> to be in 3p-boost itself, and i'd rather build with exactly the same libs as 
> the lab...
>
> here's one of many examples:
>
> http://paste.opensuse.org/77018665  (it's way too long and unreadable for 
> email)
>
> any ideas / tips / hints for me? google results seem to suggest something or 
> the other about namespaces...
For the problems indicated in the pasted log excerpt, I think they are
caused by void intrusive_ptr_add_ref(LLIOPipe* p) and
void intrusive_ptr_release(LLIOPipe* p) being used in
boost/boost/smart_ptr/intrusive_ptr.hpp
<https://bitbucket.org/lindenlab/3p-boost/src/d25385ff24aea3a6dcc174c45b33ee367db16458/boost/boost/smart_ptr/intrusive_ptr.hpp?at=default#cl-41>
but being (forward) declared only after
<https://bitbucket.org/lindenlab/viewer-development/src/71eaab4cf442a25cdcf1d26c9595c34e7997c6b8/indra/llmessage/lliopipe.h#cl-56>
<boost/intrusive_ptr.hpp> is included
<https://bitbucket.org/lindenlab/viewer-development/src/71eaab4cf442a25cdcf1d26c9595c34e7997c6b8/indra/llmessage/lliopipe.h#cl-32>
in indra/llmessage/lliopipe.h. Moving the forward declaration of these
functions before that inclusion probably lets you get rid of the
warning, but might require to move the forward declaration of class
LLIOPipe
<https://bitbucket.org/lindenlab/viewer-development/src/71eaab4cf442a25cdcf1d26c9595c34e7997c6b8/indra/llmessage/lliopipe.h#cl-38>
even before both.

See http://gcc.gnu.org/gcc-4.7/porting_to.html > section "Name lookup
changes".

Cheers,
Borun
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