Build error on Ubuntu 16.10


I am trying to build ROOT 5.34/36 on 64bit Ubuntu 16.10.
The build fails with the following error:

Does anyone know why this problem is occurring and how I can get around it?

Possibly relevant information:
[ul]I am using gcc and g++ versions 4.9.4 (and have unsuccessfully tried using version 6 for both)

ROOT was configured using


Thank you for your help,

Hi Francis. Thanks for reporting the problem. I have committed a fix to the 5.34 branch. See … 21e0c65493
Adding std:: in isnan fixes it.