Am 03/24/2014 08:04 AM, schrieb Kilian, Jens:
From: Florian Weimer [mailto:fw@xxxxxxxxxxxxx]
* Jens Kilian:
I remember only one compiler (HP aCC) which requires compiling main()
as C++. As far as I know GCC never needed this.
Some systems need collect2 support for initializers:
<http://gcc.gnu.org/onlinedocs/gccint/Collect2.html>
I interpret this page to mean that GCC will always call the required __main()
from main(), even if compiling C code. In this case you wouldn't need to
compile main() using g++ (not gcc).
But that's strange. With this little example:
----- test.cpp ----------
#include <iostream>
class A {
public:
int a;
A() { a = 5; }
void showA() { std::cout << a << std::endl; }
};
A a;
int main(int argc, char * argv[]) {
a.showA();
return 0;
}
----- test.cpp ----------
and doing
g++ -static -O0 -o test test.cpp
nm test | grep main
no __main pops up.
Could be inlined though?
But there is a
__libc_start_main
symbol, maybe __main got renamed?
Yours sincerely,
Eric Wolf
