$ make
g++ module.cpp -c -O2
ar cq libmodule.a module.o
g++ test.cpp module.o -o from-object
g++ test.cpp -Wl,--whole-archive libmodule.a -Wl,--no-whole-archive \
-o from-lib
$ ./from-object
Yay life is good.
$ ./from-lib
Yay life is good.
#include "module.hpp"
#include <iostream>
using namespace std;
void foo()
{
cout << "Yay life is good." << endl;
}
#include "module.hpp"
int main()
{
return 0;
}
void foo() __attribute__((constructor));
default:
g++ module.cpp -c -O2
ar cq libmodule.a module.o
g++ test.cpp module.o -o from-object
g++ test.cpp -Wl,--whole-archive libmodule.a -Wl,--no-whole-archive -o from-lib
