[jnanabrao]

Hi,
I'm trying to install the WENO library developed by Jan Gaertner and Tobias Martin with openfoam-7. I've followed the following two steps in the readme.md file:-
1. Clone the directory with
`git clone https://github.com/WENO-OF/WENOEXT.git`

2. Execute `Allwmake` to build the library


My working directory is $HOME/OpenFOAM-7 where OF-7 is built from source. I'm getting the compilation error as shown in the attached image. Any suggestions on how to fix it will be greatly appreciated.

[jnanabrao]

I'm posting the reply to address how i managed to get the compilation successfully. The issue seems to be connected to the 64-bit int size build settings. The error can be overcome one of two ways:

1. change WM_LABEL_SIZE in .bashrc from 64 to 32. This however doesn't finish the installation as other files fail to compile.
2. Keeping WM_LABEL_SIZE=64, in the WENOBASE.C file in libWENOEXT/WENOEXT on line 1086 a labelList is initialized with literals as:

labelList dummyList(3,0);

The literals need to be explicitly interpreted as long int with the following change:
labelList dummyList(3l,0l);(where it is '3'and '0' followed by the small letter 'l'.

The compilation executes without problems after the above change.