On 2 Oct 2013 at 14:48, Emil Dotchevski wrote:
Then I have a main.cpp which creates an instance of ClassA and ClassB and links to the library which contains ClassA.o and ClassB.o. When I compile the main.cpp I get the linker error duplicate symbol for the errinfo_api_function object in ClassA.o and ClassB.o. If I remove the visibility=hidden flag, it links without problems. I am not an expert on the compiler flags, but I saw that many libraries use the visibility=hidden flag so I think it would be good, if my lib could also use it.
Honestly I have no idea why this would happen. Anyone?
Throwable types must *always* be marked with attribute visibility default. I assume this has been done correctly, but if it hasn't that might help explain the problem. See my doc on the issue at http://gcc.gnu.org/wiki/Visibility. Note that throwable types, if with virtual function tables, may consist of more symbols than otherwise expected. Niall -- Currently unemployed and looking for work. Work Portfolio: http://careers.stackoverflow.com/nialldouglas/