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Old 03-24-2006, 03:46 AM   #1
shotokan
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Hello World linking Errors


Hello I tying to to learn C++ I'm using the "SAM'S Teach Yourself C++ in 24 HOURS:THIRD EDITION" book. I have GCC-3.3.4.

I tried to compile the HELLO.CPP file:
Code:
#include <iostream>

int main()
{
        std::cout << "Hello World!/n";
        return 0;
}
But when I do:
Code:
gcc HELLO.CPP
I get:
Code:
/tmp/ccO9otYD.o(.text+0xd): In function `std::__verify_grouping(char const*, unsigned int, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)':
: undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::size() const'
/tmp/ccO9otYD.o(.text+0x60): In function `std::__verify_grouping(char const*, unsigned int, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)':
: undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::operator[](unsigned int) const'
/tmp/ccO9otYD.o(.text+0x9f): In function `std::__verify_grouping(char const*, unsigned int, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)':
: undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::operator[](unsigned int) const'
/tmp/ccO9otYD.o(.text+0xce): In function `std::__verify_grouping(char const*, unsigned int, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)':
: undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::operator[](unsigned int) const'
/tmp/ccO9otYD.o(.text+0x127): In function `main':
: undefined reference to `std::cout'
/tmp/ccO9otYD.o(.text+0x12c): In function `main':
: undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
/tmp/ccO9otYD.o(.text+0x155): In function `__static_initialization_and_destruction_0(int, int)':
: undefined reference to `std::ios_base::Init::Init()'
/tmp/ccO9otYD.o(.text+0x186): In function `__tcf_0':
: undefined reference to `std::ios_base::Init::~Init()'
/tmp/ccO9otYD.o(.eh_frame+0x11): undefined reference to `__gxx_personality_v0'
collect2: ld returned 1 exit status
I don't understand any of this:

Anyone have a suggetion?
 
Old 03-24-2006, 04:05 AM   #2
bulliver
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gcc is a "C" compiler. Try "g++ HELLO.CPP".
 
Old 03-24-2006, 04:13 AM   #3
Hko
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Distribution: ubuntu
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Use a backslash instead:
Code:
int main()
{
        std::cout << "Hello World!\n";
        return 0;
}
Also, I'd recommend compiling with"
Code:
g++ -Wall -pedantic -o hello hello.cpp
This makes sure that:
  • The executable will have the name "hello" instead of "a.out".
  • You get all warnings about your code
 
Old 03-24-2006, 04:16 AM   #4
jlliagre
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and don't use uppercase in file names/extensions, that's ugly.
 
Old 03-24-2006, 04:16 AM   #5
shotokan
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Original Poster
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Thank you very very much!
 
  


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