On Apr 9, 2007, at 6:49 AM, Chris Dams wrote:
I am not sure whether the problem I am going to describe is a
problem with
gcc or with the dynamic linker on Mac OS X, but maybe someone here
knows a
way to deal with it or could suggest a more appropriate mailing
list. I
use gcc 3.3 on Darwin 7.9.0.
The nicest way to fix this would be to update the OS and the
compiler. The second best way might be to do:
mrs $ g++-3.3 -c -o test.o test.C; g++-3.3 -c -o main.o main.C; g
++-3.3 -dynamiclib -o test.dylib test.o; g++-3.3 -o main main.o
test.dylib
mrs $ ./main
the address of v is 929800
the address of v is 929800
mrs $ cat test.h#include <iostream>
#include <vector>
template <class T> class test
{ public:
test()
{ std::cout << "the address of v is " << (int)&v <<
std::endl;
}
void method() {}
private:
static std::vector<T> v;
};
template <class T> std::vector<T> test<T>::v;
extern template test<int>;
extern test<int> t;
mrs $ cat test.C
#include "test.h"
test<int> t;
template test<int>;
mrs $ cat main.C
#include "test.h"
int main()
{ t.method();
test<int> t2;
return 0;
}
or any other technology that can handle templates being duplicated
across dynamic library boundaries.
