Build failed trying to run example in tutorial

[Aqil Hafizuddin]

Hello guys,

I am trying to run the first.cc and keep getting error. Not too good at
explaining my problem but hope anyone can help me. I've been searching for
the solution at google but can't seem to solve this.

Here is the error i faced.

['pdbarnes' via ns-3-users]

You can only have one main() function in the files in a subdirectory of scratch. Evidently you have two, presumably in first.cc and example.cc. You can only have one.

If everything is in one file, as in the tutorial examples such as first.cc, you only need to put the file in scratch, not a subdirectory. In the case of the tutorial files you should change the name of the file as well, so rename first.cc as directed in the tutorial.

If your code is split across multiple files, for example a class header .h and implementation.cc, as well as a main, put all the files in a subdirectory.

Peter

[Aqil Hafizuddin]

Initially I still having trouble understanding your simple explanation
because I am really new with this program. But after many times of re-read
and also google for better understanding, I managed to run the first.cc and
others .cc.

Thank you very much for the help sir.

Post by 'pdbarnes' via ns-3-users
You can only have one main() function in the files in a subdirectory of
scratch. Evidently you have two, presumably in first.cc and example.cc. You
can only have one.
If everything is in one file, as in the tutorial examples such as
first.cc, you only need to put the file in scratch, not a subdirectory. In
the case of the tutorial files you should change the name of the file as
well, so rename first.cc as directed in the tutorial.
If your code is split across multiple files, for example a class header .h
and implementation.cc, as well as a main, put all the files in a
subdirectory.
Peter