How to release a executable under a license?

[Jeeppler]

Let's assume I write a small application and compile it as an self-contained executable. The user can download the binary and execute it.

However, how does the user know the license of the self-contained executable? All license information in comments in the source are getting striped by the compiler. As a result, the user does not have any idea whether the program is under a Free and Open Source Software License or not.

I was not able to find anything in the SPDX resources, REUSE spec or this tutorial about the topic of licenses in self-contained executables.