Cygwin/GCC can't link my code... either.

Cygwin/GCC can't link my code... either.

[Motivus]

But it's only "Hello World!"...

In my case, I'm running W2k & the latest Cygwin. I've searched the list (where
I expected to find my answer right away), the FAQ, the docs... but turned up
nothing.

The code:

#include <iostream>

int main()
{
  std::cout << "Hello world!\n";
  return 0;
}

The message:

$ gcc hello.cpp
/cygdrive/c/DOCUME~1/MOTIVU~1/LOCALS~1/Temp/ccCvXb2l.o(.text+0x24):hello.cpp:
un
defined reference to `cout'
/cygdrive/c/DOCUME~1/MOTIVU~1/LOCALS~1/Temp/ccCvXb2l.o(.text+0x29):hello.cpp:
un
defined reference to `ostream::operator<<(char const *)'
collect2: ld returned 1 exit status

Please help.

motivus

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Re: Cygwin/GCC can't link my code... either.

[Robert Collins]

Use g++, not gcc.
Rob

----- Original Message -----
From: "Motivus" <motivus@yahoo.com>
To: <cygwin@cygwin.com>
Sent: Monday, July 15, 2002 1:05 PM
Subject: Cygwin/GCC can't link my code... either.


> But it's only "Hello World!"...
>
> In my case, I'm running W2k & the latest Cygwin. I've searched the list
(where
> I expected to find my answer right away), the FAQ, the docs... but turned
up
> nothing.
>
> The code:
>
> #include <iostream>
>
> int main()
> {
>   std::cout << "Hello world!\n";
>   return 0;
> }
>
> The message:
>
> $ gcc hello.cpp
>
/cygdrive/c/DOCUME~1/MOTIVU~1/LOCALS~1/Temp/ccCvXb2l.o(.text+0x24):hello.cpp
:
> un
> defined reference to `cout'
>
/cygdrive/c/DOCUME~1/MOTIVU~1/LOCALS~1/Temp/ccCvXb2l.o(.text+0x29):hello.cpp
:
> un
> defined reference to `ostream::operator<<(char const *)'
> collect2: ld returned 1 exit status
>
> Please help.
>
> motivus
>
> __________________________________________________
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> Yahoo! Autos - Get free new car price quotes
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>
>


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Re: Cygwin/GCC can't link my code... either.

[Michael Beach]

On Monday 15 July 2002 13:05, Motivus wrote:
> But it's only "Hello World!"...
>
> In my case, I'm running W2k & the latest Cygwin. I've searched the list
> (where I expected to find my answer right away), the FAQ, the docs... but
> turned up nothing.
>
> The code:
>
> #include <iostream>
>
> int main()
> {
>   std::cout << "Hello world!\n";
>   return 0;
> }
>
> The message:
>
> $ gcc hello.cpp
> /cygdrive/c/DOCUME~1/MOTIVU~1/LOCALS~1/Temp/ccCvXb2l.o(.text+0x24):hello.cp
>p: un
> defined reference to `cout'
> /cygdrive/c/DOCUME~1/MOTIVU~1/LOCALS~1/Temp/ccCvXb2l.o(.text+0x29):hello.cp
>p: un
> defined reference to `ostream::operator<<(char const *)'
> collect2: ld returned 1 exit status
>
> Please help.

Well, I'm reasonably certain that since you're doing a compile + link with 
"gcc" instead of "g++" you'll only be getting the standard C libraries rather 
than the C++ ones. Try using "g++" rather than "gcc", or else explicitly link 
with the standard C++ library using "-lstdc++".

>
> motivus

Regards
M.Beach

>
> __________________________________________________
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> Yahoo! Autos - Get free new car price quotes
> http://autos.yahoo.com
>
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Re: Cygwin/GCC can't link my code... either.

[Motivus]

Thanks all. Problem solved.

Mvus

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Re: Cygwin/GCC can't link my code... either

[Dockeen]

Motivus wrote:

"I've searched the list(where I expected to find my answer right away), 
the FAQ, the docs... but turned up nothing."

I've found in cases like this it is more productive to go to Google
first.  If there is a reference (FAQ, Manual), it will find it, and
it performs better for me than the search engine in the archive.  In this
case, I searched on
 
gcc "undefined reference to 'cout'" cygwin

and got a number of very good hits that gave the same correction.  In this 
case, this problem is one I run into a lot cuz I fat finger in gcc
rather than g++.  

Wayne Keen

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