I have a problem. When I execute make, I report the following error: indivadate.c: To calc_ Var undefined reference and collect2: error ld returned 1 exit status.

[leiyaqi]

[stellalisy]

@leiyaqi that function is currently deprecated and for the most up-to-date version of Shackleton please see this repo: https://github.com/DrKenReid/Shackleton-Framework