On 05/09/2011 19:00, Andrey Semashev wrote:
On 09/05/2011 03:40 PM, Mathias Gaunard wrote:
On 01/09/2011 19:00, Andrey Semashev wrote:
Suppose you use boost::any with types int and string in your main executable and in one of the dlls linked in. Exe and dll will have separate instances of both type_id<int>::value and type_id<string>::value
Which is no different than when compiling multiple translation units.
You are assuming runtime linking, again.
Hm no, I was drawing a parallel with static linking here. When you use DLL, so, or dylib, you use runtime linking which, ideally, should be essentially the same.
Are you saying that, say, on MacOS X or Solaris there is no need to do anything to export these symbols and the runtime linker will relocate them to a single instance? That's news to me.
Whether you have to export the symbols or not is a separate issue. The linkers above support symbols that are "weak", while DLL do not