On Wed, Oct 9, 2013 at 11:31 AM, Michael Kragh Pedersen
Thank you, George and Krzysztof. The reason I asked about this is that I’m getting an error when trying to implement serialize into my class, and I thought this was due to the serialize template only being in one of the serialization libraries, thinking they all had different functions. The error I get is:
C:/boost_1_54_0/boost/serialization/access.hpp:118: undefined reference to `void boinc::work::Sudoku::serializeboost::archive::binary_oarchive(boost::archive::binary_oarchive&, unsigned int)'
Googling the error, I found this link:
http://stackoverflow.com/questions/9795888/boost-serialization-using-separat...
Which mentions putting the definition into the header, which I’ve tried, but I still get the same error. So given the following code, can anyone tell me what I’m doing wrong?
Here's a thought: in my experience integrating with facets of the boost library, dealt with Spirit Qi at some length, and Phoenix and so forth tend to want things navigable from the global (::) namespace, it can be sensitive to namespace issues. friend class boost::serialization::access may not be able to find ::boinc::Sudoku, for example. You might try non-intrusive serialization if that's an issue. Which is better SOLID style IMO anyway because it decouples the serialization know-how from the domain in the first place. Always a good thing; then the domain can update, the serialization could update, without either knowing the difference, necessarily.
#ifndef SUDOKU_HPP_ #define SUDOKU_HPP_
#include
#include namespace boinc { class Sudoku { friend class boost::serialization::access;
private: template<class Archive> void serialize(Archive &ar, const unsigned int version) { ... } }; } } #endif
I have been following the serialization tutorial here:
http://www.boost.org/doc/libs/1_54_0/libs/serialization/doc/tutorial.html
And I don’t see any difference between my code and the code in the documentation, besides the archive inclusions.
From: Krzysztof Czainski Sent: Wednesday, October 09, 2013 3:43 PM To: boost-users@lists.boost.org Subject: Re: [Boost-users] How to choose which library version to choose?
2013/10/9 Michael Kragh Pedersen
I have downloaded and built the Boost library, as according to these instructions:
http://theseekersquill.wordpress.com/2010/08/24/howto-boost-mingw/
I need to use the serialization library, so I looked at the stage\lib folder, only to 16 different library files! Some are named mt, some sd, some s or d, and some a combination thereof, all this following libboost_serialization-mgw48. Some are dll files and some are a files.
Those are different variants of the same library; you should choose one variant, and link to that variant only.
-mt means multithreading -s means static (I think) -d means debug -sd probably means static debug
I tried using –lboost_serialization, as I have seen this mentioned on a lot of forums, but Eclipse says it can’t find that library. So how on Earth am I supposed to figure out which of the many files to link to?!
If you want the static single-threading non-debug version, you probably need something like -lboost_serialization-s-mgw48 -LX:\path\to\boost\libs
HTH, Kris
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