87 lines
2.7 KiB
Python
87 lines
2.7 KiB
Python
# SPDX-License-Identifier: GPL-2.0-or-later
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#
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# Copyright (C) 2022 Thomas Basler and others
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#
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import os
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Import("env")
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try:
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from dulwich import porcelain
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except ModuleNotFoundError:
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env.Execute('"$PYTHONEXE" -m pip install dulwich')
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from dulwich import porcelain
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def updateFileIfChanged(filename, content):
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mustUpdate = True
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try:
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with open(filename, "rb") as fp:
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if fp.read() == content:
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mustUpdate = False
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except:
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pass
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if mustUpdate:
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with open(filename, "wb") as fp:
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fp.write(content)
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return mustUpdate
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def get_build_version():
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try:
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build_version = porcelain.describe('.') # '.' refers to the repository root dir
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except:
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build_version = "g0000000"
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print ("Firmware Revision: " + build_version)
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return build_version
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def get_build_branch():
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try:
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branch_name = porcelain.active_branch('.').decode('utf-8') # '.' refers to the repository root dir
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except Exception as err:
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branch_name = "master"
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print("Firmware Branch: " + branch_name)
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return branch_name
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def get_firmware_specifier_build_flag():
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build_version = get_build_version()
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build_flag = "-D AUTO_GIT_HASH=\\\"" + build_version + "\\\""
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build_branch = get_build_branch()
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build_flag += " -D AUTO_GIT_BRANCH=\\\"" + branch_name + "\\\""
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return (build_flag)
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def do_main():
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if 0:
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# this results in a full recompilation of the whole project after each commit
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env.Append(
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BUILD_FLAGS=[get_firmware_specifier_build_flag()]
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)
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else:
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# we just create a .c file containing the needed datas
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targetfile = os.path.join(env.subst("$BUILD_DIR"), "__compiled_constants.c")
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lines = ""
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lines += "/* Generated file within build process - Do NOT edit */\n"
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if 0:
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# Add the current date and time as string in UTC timezone
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from datetime import datetime, timezone
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now = datetime.now(tz=timezone.utc)
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COMPILED_DATE_TIME_UTC_STR = now.strftime("%Y/%m/%d %H:%M:%S")
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lines += 'const char *__COMPILED_DATE_TIME_UTC_STR__ = "%s";\n' % (COMPILED_DATE_TIME_UTC_STR)
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if 1:
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# Add the description of the current git revision
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lines += 'const char *__COMPILED_GIT_HASH__ = "%s";\n' % (get_build_version())
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# ... and git branch
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lines += 'const char *__COMPILED_GIT_BRANCH__ = "%s";\n' % (get_build_branch())
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updateFileIfChanged(targetfile, bytes(lines, "utf-8"))
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# Add the created file to the buildfiles - platformio knows how to handle *.c files
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env.AppendUnique(PIOBUILDFILES=[targetfile])
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do_main()
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