Install freefem 4.9


I am trying to install the Freefem 4.9 version. However, I met some issue, saying

Installing ARPACK version 3.8.0... 
ERROR: Unable to download package ARPACK from:
* If URL specified manually - perhaps there is a typo?

It seems some files have been removed from Github and can’t be downloaded now. But I need that specific version of Freefem. Is there an alternative to resolve this?

Thank you!

Why do you need that specific version? You could try changing --download-arpack in 3rdparty/ff-petsc/Makefile to --download-arpack=

Or you could remove --download-arpack if it fails.

Thank you so much! Its resolved!