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Wed, 12 Aug 2026 11:23:39 -0700 (PDT) From: Chen Miao To: corbet@lwn.net, alexs@kernel.org, si.yanteng@linux.dev, skhan@linuxfoundation.org, dzm91@hust.edu.cn, mchehab@kernel.org, wy@wyuan.org Cc: linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, Chen Miao Subject: [PATCH v3 1/6] docs: kdoc: add GNU Make detection Date: Thu, 13 Aug 2026 02:23:18 +0800 Message-ID: <20260812182327.53694-2-chenmiao.ku@gmail.com> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20260812182327.53694-1-chenmiao.ku@gmail.com> References: <20260812182327.53694-1-chenmiao.ku@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The Sphinx dependency checker and build wrapper need to select a GNU Make executable that meets the minimum supported version. Keep the version parsing and command selection in a common module so both tools use identical behavior. Signed-off-by: Chen Miao --- tools/lib/python/kdoc/gmake_detect.py | 62 +++++++++++++++++++++++++++ 1 file changed, 62 insertions(+) create mode 100644 tools/lib/python/kdoc/gmake_detect.py diff --git a/tools/lib/python/kdoc/gmake_detect.py b/tools/lib/python/kdoc/gmake_detect.py new file mode 100644 index 000000000..5c0a28bc7 --- /dev/null +++ b/tools/lib/python/kdoc/gmake_detect.py @@ -0,0 +1,62 @@ +#!/usr/bin/env python3 +# SPDX-License-Identifier: GPL-2.0-or-later +# Copyright (c) 2026 Chen Miao + +"""Detect a supported GNU Make executable.""" + +import re +import shutil +import subprocess +import sys + +from kdoc.python_version import PythonVersion + + +MIN_GMAKE_VERSION = PythonVersion("4.0").version + + +def get_gmake_version(cmd): + """Return the GNU Make version for *cmd*, or ``None`` otherwise.""" + if not cmd: + return None + + kwargs = {} + if sys.version_info < (3, 7): + kwargs["universal_newlines"] = True + else: + kwargs["text"] = True + + try: + result = subprocess.run( + [cmd, "--version"], + stdout=subprocess.PIPE, + stderr=subprocess.PIPE, + check=True, + **kwargs, + ) + except (OSError, subprocess.CalledProcessError): + return None + + match = re.search( + r"^GNU Make\s+([0-9]+(?:\.[0-9]+)*)", result.stdout, re.MULTILINE + ) + if not match: + return None + + return PythonVersion.parse_version(match.group(1)) + + +def find_gmake(make=None): + """Return the first GNU Make 4.0+ from MAKE, gmake, or make.""" + candidates = ( + make, + shutil.which("gmake"), + shutil.which("make"), + ) + + for cmd in candidates: + version = get_gmake_version(cmd) + if version and version >= MIN_GMAKE_VERSION: + return cmd + + return None -- 2.50.1 (Apple Git-155)