This is an example repo using bazel's under-documented "stamp" feature to embed information into your final binary in a relatively safe way.
The binary_example target in the root root BUILD file is
the standard example of linkstamps where you have a cc_library with
the linkstamp attribute, and depend on that from a binary that sets
stamp = 1.
The genrule_example target in the root BUILD file is an
example for when you don't have a top level binary you can set stamp = 1 on (even though in this example we still use a cc_binary to
demonstrate it working). This is useful for the case you want to embed
this specific information into a static library that you vendor.