git_tag_macro.py

import os
import subprocess

tag = os.environ.get("SS2K_FIRMWARE_VERSION")

if os.environ.get("GITHUB_ACTIONS") == "true" and not tag:
    raise RuntimeError("SS2K_FIRMWARE_VERSION must be set for GitHub Actions builds")

if not tag:
    subprocess.run(["git", "fetch", "--unshallow"])
    branch = (
        subprocess.check_output(["git", "rev-parse", "--abbrev-ref", "HEAD"])
        .strip()
        .decode("utf-8")
    )

    tag = (
        subprocess.check_output(["git", "describe", "--tags", "--always"])
        .strip()
        .decode("utf-8")
    )

    if branch != "master":
        tag_parts = tag.split("-")
        tag = "%s-%s" % (tag_parts[0], branch)
        if len(tag_parts) > 1:
            tag = "%s-%s" % (tag, "-".join(tag_parts[1:]))
print("-DFIRMWARE_VERSION='\"%s\"'" % tag)