naming convention for shell script and makefile

Question

I have a few makefiles that store shared variables, such as CC=gcc , how should I name them?

The candidates are:

common.mk
Make.common
Makefile.common

.. which is more classic? Is there a standard?

Similarly, I have some shell scripts, which should i choose among the following:

do_this_please.sh
do-this-please.sh
DoThisPlease.sh
doThisPlease.sh

Is there a generally accepted 'case' and suffix for these?

Answer 1

Google's open-source style uses underscores as separators: https://google.github.io/styleguide/shellguide.html#s7.4-source-filenames.

So in your case, it would be do_this_please.sh or do_this_please using this style.