ns 3 - Errors while building ns-3 on Ubuntu 16.10 -

i trying install ns-3 on ubuntu 16.10 when try build following command

python bake.py build 

and have 3 errors:

building nsc-0.5.3 - problem problem: optional dependency, module "nsc-0.5.3" failed may reduce functionality of final build. however, bake continue since "nsc-0.5.3" not essential dependency. more information call bake -v or -vvv, full verbose mode.

building pybindgen-0.16.0.825 - problem unavailable building tool module pybindgen-0.16.0.825, install waf problem: optional dependency, module "pybindgen-0.16.0.825" failed may reduce functionality of final build. however, bake continue since "pybindgen-0.16.0.825" not essential dependency. more information call bake -v or -vvv, full verbose mode.

building ns-3.17 - problem error: critical dependency, module "ns-3.17" failed more information call bake --debug and/or -v, -vvv, full verbose mode (bake --help)

what should fix them?

i had similar problem , figured out nsc doesn't work gcc/g++-6. had change default version of gcc , g++ (from 6.3.0 to, example, 5.4.1)

1) find installed compilers:

dpkg --list | grep compiler 

2) change default gcc, g++, cc , c++ (via https://askubuntu.com/questions/26498/choose-gcc-and-g-version):

sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-6 10 sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-5 20  sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-6 10 sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-5 20  sudo update-alternatives --install /usr/bin/cc cc /usr/bin/gcc 30 sudo update-alternatives --set cc /usr/bin/gcc  sudo update-alternatives --install /usr/bin/c++ c++ /usr/bin/g++ 30 sudo update-alternatives --set c++ /usr/bin/g++ 

also, check if changes saved:

gcc -v 

it should say: "gcc version 5.4.1" @ end (or lower 6 installed , used in instructions above).

after that, managed install nsc (that main problem).

hope helps!