git_tag_macro.py

import subprocess

subprocess.run(["git", "fetch", "--unshallow"])
branch = (
    subprocess.check_output(["git", "rev-parse", "--abbrev-ref", "HEAD"])
    .strip()
    .decode("utf-8")
)

#try:
#    subprocess.check_call(["git", "describe", "--tags"])
#except:
#    tag = (
#    subprocess.check_output(["git", "describe", "--abbrev=0" "--tags"])
#    .strip()
#    .decode("utf-8")
#    )
#else:
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)