This most likely occurs if you have something like the following in more than one module: #include "water.hpp" // which icludes BOOST...EXPORT #include "../?iarchive.hpp" #include "../?oarchive.hpp" to fix this - make sure you include .../archive.hpp in only one module. Robert Ramey Manuel Jung wrote:
Hi,
Im trying to use the BOOST_CLASS_EXPORT_GUID, but if i use it, i cant link my project. if got these error messages:
/gcc-4.1.2/debug/threading-multi/crabd.o:/usr/lib/gcc/i486-linux-gnu/4.1.2/../../../../include/c++/4.1.2/exception:57: multiple definition of `boost::archive::detail::guid_initializerwater::status::instance' bin/gcc-4.1.2/debug/threading-multi/seal.o:/usr/lib/gcc/i486-linux-gnu/4.1.2/../../../../include/c++/4.1.2/exception:57: first defined here bin/gcc-4.1.2/debug/threading-multi/water.o:/usr/lib/gcc/i486-linux-gnu/4.1.2/../../../../include/c++/4.1.2/exception:57: multiple definition of `boost::archive::detail::guid_initializerwater::status::instance' bin/gcc-4.1.2/debug/threading-multi/seal.o:/usr/lib/gcc/i486-linux-gnu/4.1.2/../../../../include/c++/4.1.2/exception:57: first defined here
The file with the macros is just one time defined. Is there an other possible reason than multiple definition or a more hidden way to define it more than one time? Kind Regards Manuel Jung