unable to build ns3-dce

[stoza]

• ns3 version (cat $NS3FOLDER/VERSION or the commit hash): 3-dev
• DCE version (git log|head -n1): 94de5084e7430bb51c8176cd99703e552e305391
• Operating system/version (lsb_release -a): Ubuntu 16.04.7 LTS (in a container)
• Libc version (ldd -v): 2.23
• compiler version (gcc -v/g++ -v/clang -v/clang++ -v): gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.12)

Description of the problem

I'm trying to build ns3 following the quick start here https://www.nsnam.org/docs/dce/manual/html/getting-started.html. But every time I do this I have the following error (obtained by running bake.py deploy -vvv).

../myscripts/mt3/dce-mt3.cc: In function 'int main(int, char**)': 
../myscripts/mt3/dce-mt3.cc:120:27: error: 'Default' is not a member of 'ns3::YansWifiPhyHelper
 YansWifiPhyHelper phy = YansWifiPhyHelper::Default ();
                           ^
Waf: Leaving directory `/home/ns3dce/bake/source/ns-3-dce/build'
Build failed
 -> task in 'bin/dce-mt3' failed with exit status 1 (run with -v to display more information)

 >> Building dce-ns3-dev - Problem
   > Subprocess failed with error 1: ['/usr/bin/python3', '/home/ns3dce/bake/source/ns-3-dce/waf']
 > Error:  Critical dependency, module "dce-ns3-dev" failed 
   For more information call Bake with --debug and/or -v, -vvv, for full verbose mode (bake --help)

Steps to reproduce

Just follow the quick start given at https://www.nsnam.org/docs/dce/manual/html/getting-started.html

Thank a lot for your help!

[mas2tg]

I was actually facing the same problem. I couldn't figure out why it is happening. A quick and dirty way to bypass this problem is to comment out the code in ./myscripts/mt3/wscript and replace it with pass.

def build(bld):
    pass
    #bld.build_a_script('dce', needed = ['core', 'internet', 'dce', 'point-to-point', 'netanim', 'mobility'],
        #                         target='bin/dce-mt3',
        #                         source=['dce-mt3.cc'],
        #                         )

[tomhenderson]

Yes, the problem is that the examples need some alignment with changes to the ns-3 Wi-Fi API that have gone in since ns-3.32. I have a patch (off tree) to fix all of these and will try to commit soon. In the meantime, your change of disabling the problematic examples is fine as a workaround, or you can change:

YansWifiPhyHelper phy = YansWifiPhyHelper::Default ();

to

YansWifiPhyHelper phy;

[mas2tg]

Thank you!

[tomhenderson]

This is now fixed in the master branch.