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jadhravi · 04-04-2010, 09:30 AM

When i try to write a simple c++ application using eclipse gallieo i get an error
like

g++ -o"Hello1" ./test.o
/usr/lib/gcc/i486-linux-gnu/4.3.3/../../../../lib/crt1.o: In function `_start':
/build/buildd/glibc-2.9/csu/../sysdeps/i386/elf/start.S:115: undefined reference to `main'
collect2: ld returned 1 exit status
make: *** [Hello1] Error 1

and when I try to run the same file i get an error as launch failed .

I am using ubuntu 9.04.

solutions?

thank u!!

AlucardZero · 04-04-2010, 10:57 AM

Post your code.

jadhravi · 04-04-2010, 11:27 AM

Quote:

Originally Posted by AlucardZero

Post your code.

The code written is
#include <iostream>
using namespace std;
int main()
{
cout<<"Hello"<<endl;
}

Sergei Steshenko · 04-04-2010, 12:31 PM

Quote:

Originally Posted by jadhravi

When i try to write a simple c++ application using eclipse gallieo i get an error
like

g++ -o"Hello1" ./test.o
/usr/lib/gcc/i486-linux-gnu/4.3.3/../../../../lib/crt1.o: In function `_start':
/build/buildd/glibc-2.9/csu/../sysdeps/i386/elf/start.S:115: undefined reference to `main'
collect2: ld returned 1 exit status
make: *** [Hello1] Error 1

and when I try to run the same file i get an error as launch failed .

I am using ubuntu 9.04.

solutions?

thank u!!

The command line you show contains no input files in C++, just an object file. So, it's linking only command.

Where is compilation ? And for your simple program one command line is sufficient for both linking and compilation.

Why do you use Eclipse in the first place ?

graemef · 04-04-2010, 07:27 PM

Try compiling your code as:

Code:

g++ -o "Hello" test.cpp

Assuming that your source code file is called test.cpp, and that you are in the same directory as the file. This will create an object (test.o) file which will be linked to an executable Hello.