[ndnSIM] New Ubuntu machine - new bizarre errors

[Junxiao Shi]

Hi John

1.)  Since I already had installed ndnSIM using the instructions in Getting
> Started on the main ndnSIM.net page, I don't have to perform another git
> clone on ns-3-dev-ndnSIM.git or any of those files right?  It seems it's
> just downloading a separate copy of ndnSIM to put in a separate directory.
> *So, all I did per the instructions was a git clone on the
> ndnSIM-scenario-template-git.*
>
You don't need to clone ns-3 or ndnSIM again, as long as you have
compatible version.

2.)  I placed the downloaded branch (terminology might be off here) in
> my-simulations, *which in turn I have inside the ndnSIM folder*.  So,
> my-simulations is a directory that is a sibling directory of ns-3 and
> pybindgen, all three being inside the top level ndnSIM folder.
> *Is this correct / ok?*
>
Yes, this is correct. scenario template must be outside of ns-3 folder.

3.)  I am very confused about the difference between the extensions and
> scenarios directories.  I was under the impression I could put a
> subdirectory under extensions named as my scenario, so I named a
> subdirectory of extensions "jpb-strategy1-test", which contains
> jpb-strategy1.cpp and a umd/ directory with some classes I'm using (they
> worked fine with ndnSIM 2.1.)
> *Is this correct?*
>
You may place multiple files in extensions/ folder, which will be linked
with every scenario.
Every file in scenarios/ folder is an individual simulation which must have
a main() function. Every file is linked with every object from extensions/
to create an executable.


> 4.)  Now, it cannot find the scenario, regardless of whether its inside
> extensions or scenarios.  Does a .cpp or .cc file have to be at the top
> level or can I put a subdirectory?  I just want to remain organized.  I get
> the following:
>
>
>
> *jpbaugh at Janeway:~/ndnSIM/ns-3$ ./waf --run=jpb-strategy1-testWaf:
> Entering directory `/home/jpbaugh/ndnSIM/ns-3/build'program
> 'jpb-strategy1-test' not found; available programs are: ['subdir',
> 'scratch/subdir/subdir', 'scratch-simulator', 'scratch/scratch-simulator',
> 'test-runner', 'utils/test-runner', 'bench-simulator',
> 'utils/bench-simulator', 'bench-packets', 'utils/bench-packets',
> 'print-introspected-doxygen', 'utils/print-introspected-doxygen',
> 'tap-device-creator', 'src/fd-net-device/tap-device-creator',
> 'raw-sock-creator', 'src/fd-net-device/raw-sock-creator', 'tap-creator',
> 'src/tap-bridge/tap-creator']*
>
You must first `sudo ./waf install` from ns-3 which installs ns-3 including
ndnSIM system-wide (optimized build is recommended), and then `./waf
configure` and `./waf` inside the scenario template.

Yours, Junxiao
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