puma gem - Failed to build gem native extension

Question

I was getting the following error while installing puma gem

    $ gem install puma
    Fetching: puma-2.11.2.gem (100%)
    Building native extensions.  This coul         


        

Answer 1

Not my answer but this helped me install puma on macos (big sur) since there were warnings when building puma.

The command that I used is this:

gem install puma -- --with-cflags="-Wno-error=implicit-function-declaration"