[Qt-interest] Making a Qt program into a dynamic library

[Guido Seifert]

> But when you say "it was the extern "C" which was missing", where exactly
> did you place it then? Again, it should not have any influence on the
> outcome of dlopen() - only on dlsym()!

That's what I also would have expected. But I suppose someone with more experience of the GCC/DLL architecture might tell us that it is totally natural that dlopen crashes. :-)

Here were I put the extern "C":


main.cpp of my app/lib (slightly cleaned):

#include <QApplication>
<few more includes>

//extern "C"  <---- comment/uncomment -> crash/working

int start(int argc, char *argv[])
{
  QApplication a( argc, argv );
  <some of my stuff>
  int result = a.exec();
  return result;
}
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