GCC, C++, and broken linking

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Author: Codie William Masters
Date:
New-Topics: Download speeds
Subject: GCC, C++, and broken linking

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Somebody please explain what I'm doing wrong here. I'm trying to work on
some of my Advanced Placement computer science AB projects here at home.
Well, I typed in the code, checked it twice and ran 'gcc main.cpp' to no
avail. First it gave me warnings about textspace standard so I fixed the
code to make it recent (the book is 1994) and tried again. I now get all
kinds of linker errors:

/tmp/ccv7OZu3.o: In function `main':
/tmp/ccv7OZu3.o(.text+0x36): undefined reference to
`std::basic_ostream<char, std::char_traits<char> >& std::endl<char,
std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char>
>&)'
/tmp/ccv7OZu3.o(.text+0x43): undefined reference to `std::cout'
/tmp/ccv7OZu3.o(.text+0x48): 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/ccv7OZu3.o(.text+0x51): undefined reference to
`std::basic_ostream<char, std::char_traits<char>
>::operator<<(std::basic_ostream<char, std::char_traits<char> >&
(*)(std::basic_ostream<char, std::char_traits<char> >&))'
/tmp/ccv7OZu3.o(.text+0x86): undefined reference to `std::cout'
/tmp/ccv7OZu3.o(.text+0x8b): undefined reference to
`std::basic_ostream<char, std::char_traits<char> >& std::operator<<
<char, std::char_traits<char> >(std::basic_ostream<char,
std::char_traits<char> >&, std::_Setw)'
/tmp/ccv7OZu3.o(.text+0x94): undefined reference to
`std::basic_ostream<char, std::char_traits<char> >::operator<<(int)'
/tmp/ccv7OZu3.o(.text+0x10b): undefined reference to
`std::basic_ostream<char, std::char_traits<char> >& std::endl<char,
std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char>
>&)'
/tmp/ccv7OZu3.o(.text+0x118): undefined reference to `std::cout'
/tmp/ccv7OZu3.o(.text+0x11d): 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/ccv7OZu3.o(.text+0x126): undefined reference to
`std::basic_ostream<char, std::char_traits<char>
>::operator<<(std::basic_ostream<char, std::char_traits<char> >&
(*)(std::basic_ostream<char, std::char_traits<char> >&))'
/tmp/ccv7OZu3.o(.text+0x15b): undefined reference to `std::cout'
/tmp/ccv7OZu3.o(.text+0x160): undefined reference to
`std::basic_ostream<char, std::char_traits<char> >& std::operator<<
<char, std::char_traits<char> >(std::basic_ostream<char,
std::char_traits<char> >&, std::_Setw)'
/tmp/ccv7OZu3.o(.text+0x169): undefined reference to
`std::basic_ostream<char, std::char_traits<char> >::operator<<(int)'
/tmp/ccv7OZu3.o(.text+0x17b): undefined reference to
`std::basic_ostream<char, std::char_traits<char> >& std::endl<char,
std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char>
>&)'
/tmp/ccv7OZu3.o(.text+0x180): undefined reference to `std::cout'
/tmp/ccv7OZu3.o(.text+0x185): undefined reference to
`std::basic_ostream<char, std::char_traits<char>
>::operator<<(std::basic_ostream<char, std::char_traits<char> >&
(*)(std::basic_ostream<char, std::char_traits<char> >&))'
/tmp/ccv7OZu3.o: In function
`__static_initialization_and_destruction_0(int, int)':
/tmp/ccv7OZu3.o(.text+0x1b6): undefined reference to
`std::ios_base::Init::Init[in-charge]()'
/tmp/ccv7OZu3.o: In function `__tcf_0':
/tmp/ccv7OZu3.o(.text+0x1e5): undefined reference to
`std::ios_base::Init::~Init [in-charge]()'
/tmp/ccv7OZu3.o(.eh_frame+0x11): undefined reference to
`__gxx_personality_v0'
collect2: ld returned 1 exit status

Does anyone know what I can do about this?

-- Zach Schimke

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Somebody please explain what I'm doing wrong here. I'm trying to work on some of my Advanced Placement computer science AB projects here at home. Well, I typed in the code, checked it twice and ran 'gcc main.cpp' to no avail. First it gave me warnings about textspace standard so I fixed the code to make it recent (the book is 1994) and tried again. I now get all kinds of linker errors: 
 
/tmp/ccv7OZu3.o: In function `main': 
/tmp/ccv7OZu3.o(.text+0x36): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::endl<char, std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&)' 
/tmp/ccv7OZu3.o(.text+0x43): undefined reference to `std::cout' 
/tmp/ccv7OZu3.o(.text+0x48): 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/ccv7OZu3.o(.text+0x51): undefined reference to `std::basic_ostream<char, std::char_traits<char> >::operator<<(std::basic_ostream<char, std::char_traits<char> >& (*)(std::basic_ostream<char, std::char_traits<char> >&))' 
/tmp/ccv7OZu3.o(.text+0x86): undefined reference to `std::cout' 
/tmp/ccv7OZu3.o(.text+0x8b): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <char, std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, std::_Setw)' 
/tmp/ccv7OZu3.o(.text+0x94): undefined reference to `std::basic_ostream<char, std::char_traits<char> >::operator<<(int)' 
/tmp/ccv7OZu3.o(.text+0x10b): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::endl<char, std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&)' 
/tmp/ccv7OZu3.o(.text+0x118): undefined reference to `std::cout' 
/tmp/ccv7OZu3.o(.text+0x11d): 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/ccv7OZu3.o(.text+0x126): undefined reference to `std::basic_ostream<char, std::char_traits<char> >::operator<<(std::basic_ostream<char, std::char_traits<char> >& (*)(std::basic_ostream<char, std::char_traits<char> >&))' 
/tmp/ccv7OZu3.o(.text+0x15b): undefined reference to `std::cout' 
/tmp/ccv7OZu3.o(.text+0x160): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <char, std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, std::_Setw)' 
/tmp/ccv7OZu3.o(.text+0x169): undefined reference to `std::basic_ostream<char, std::char_traits<char> >::operator<<(int)' 
/tmp/ccv7OZu3.o(.text+0x17b): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::endl<char, std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&)' 
/tmp/ccv7OZu3.o(.text+0x180): undefined reference to `std::cout' 
/tmp/ccv7OZu3.o(.text+0x185): undefined reference to `std::basic_ostream<char, std::char_traits<char> >::operator<<(std::basic_ostream<char, std::char_traits<char> >& (*)(std::basic_ostream<char, std::char_traits<char> >&))' 
/tmp/ccv7OZu3.o: In function `__static_initialization_and_destruction_0(int, int)': 
/tmp/ccv7OZu3.o(.text+0x1b6): undefined reference to `std::ios_base::Init::Init[in-charge]()' 
/tmp/ccv7OZu3.o: In function `__tcf_0': 
/tmp/ccv7OZu3.o(.text+0x1e5): undefined reference to `std::ios_base::Init::~Init [in-charge]()' 
/tmp/ccv7OZu3.o(.eh_frame+0x11): undefined reference to `__gxx_personality_v0' 
collect2: ld returned 1 exit status 
 
Does anyone know what I can do about this? 
<TT></TT> 
 
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<PRE>-- Zach Schimke</PRE>
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// main.cpp
//
// This program sorts an array's values into ascending order.

#include <iostream>
#include <iomanip>
using namespace std;

int main(){
    const int arraySize = 10;
    int a[arraySize] = { 2, 6, 4, 8, 10, 12, 89, 68, 45, 37};
    int hold;
    int j=0;

    cout << "Data items in original order" << endl;
    for (int i = 0; i < arraySize; i++)
        cout << setw(4) << a[i];

    for (int pass = 1; pass < arraySize - 1; pass++)
        for (int i = 0; i < arraySize - pass; i++)
            if (a[i] > a[i + 1]) {
                hold = a[i];
                a[i] = a[i + 1];
                a[i + 1] = hold;
            }

    cout << "Data items in ascending order" << endl;
    for (int i = 0; i < arraySize; i++)
         cout << setw(4) << a[i];

    cout << endl;
    return 0;
}

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