It's been a few years since I have programmed in C++. I'm starting
to develop some programs in C++ and I can't get "Hello, World" working
yet. It looks to me like 'cout' in the std library is not being found, even
though I have it installed on the system.
I'm using gcc version 3.4.6 and I have libstdc++5 and libstdc++6 installed.
my program looks like this:
// Builder.cc
#include "Builder.h"
Builder::Builder() {
// cout << "Builder constructor\n" ;
}
// Builder.h
#ifndef BUILDER_H
#define BUILDER_H
#endif
class Builder {
public:
Builder();
};
// test.cc
#include <iostream>
using namespace std;
#include "Builder.h"
main() {
Builder b = Builder();
cout << "Hello\n";
}
# makefile
Builder.o: Builder.cc
gcc -c Builder.cc
test.o: test.cc
gcc -c test.cc
test: test.o Builder.o
gcc -o test Builder.o test.o
clean:
rm -rf *.o test
When I compile and link, I get the following linking error message:
gcc -c test.cc
gcc -c Builder.cc
gcc -o test Builder.o test.o
test.o: In function `std::__verify_grouping(char const*, unsigned int, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)':test.cc
.text+0xd): undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::size() const':test.cc
.text+0x64): undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >:
perator[](unsigned int) const':test.cc
.text+0xa4): undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >:perator[](unsigned int) const':test.cc
.text+0xd3): undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >:perator[](unsigned int) const'test.o: In function `main':test.cc
.text+0x136): undefined reference to `std::cout':test.cc
.text+0x13b): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std:perator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'test.o: In function `__static_initialization_and_destruction_0(int, int)':test.cc
.text+0x163): undefined reference to `std::ios_base::Init::Init()'test.o: In function `__tcf_0':test.cc
.text+0x194): undefined reference to `std::ios_base::Init::~Init()'test.o
.eh_frame+0x11): undefined reference to `__gxx_personality_v0'collect2: ld returned 1 exit status
make: *** [test] Error 1
Does anyone have any suggestions on how to fix my problem? Thank
you in advance!!
Jim Anderson
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