Michael Brand wrote:
> In autogen.sh "git rev-parse --git-common-dir 2>/dev/null"
> => "--git-common-dir" which looks wrong. My git version is 2.4.9
> (Apple Git-60).
> 
> What am I doing wrong?

Nothing, Apple is just mired in the past. Git 2.4 was released when, 2015? I
installed the attached patch into Emacs to try to cater better to Git laggards.
Please give the patch a try. (This is Emacs. We *love* old software! :-)