From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from todd.t-8ch.de (todd.t-8ch.de [159.69.126.157]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 832E934EEED; Sun, 8 Mar 2026 21:24:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=159.69.126.157 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773005049; cv=none; b=oQ+VsRQSLB4LAKaISw/uvXUFkm/thFK7+04YuIWg6pWz3YuBtJVjQdrbj0/SS5KJZrpjYWn2gOLn+Itl2XypK7dp/PauigoiDH4EybNKLqShVxD8cFpq9oBTgUS78hjwFDoXDRKZdNrQg1mnCUFNbKYlem3xpwXgReepkYPCxRc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773005049; c=relaxed/simple; bh=9Ck8dKyO7rN5xpHErcHVSmjccYdqlZTzMQl/61jnnK0=; h=From:Subject:Date:Message-Id:MIME-Version:Content-Type:To:Cc; b=JpO3Ixfaulbs8U2tc3K1F1RTsfGiuOCkLYAe8CD4G/6Mg/RC+ioPVXa+kAxekGaJelvNCYwUR9e1Sq9DkuUE06e2PY6swmVWhHRf6ckgQ/jEVfWl0Tfmh7YGaT/FPU54tfCXmlv/l3hhibsUKu6yJyDQZxmCiGQwLqAoah54Wy0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=weissschuh.net; spf=pass smtp.mailfrom=weissschuh.net; dkim=pass (1024-bit key) header.d=weissschuh.net header.i=@weissschuh.net header.b=sSkv6/je; arc=none smtp.client-ip=159.69.126.157 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=weissschuh.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=weissschuh.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=weissschuh.net header.i=@weissschuh.net header.b="sSkv6/je" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=weissschuh.net; s=mail; t=1773005046; bh=9Ck8dKyO7rN5xpHErcHVSmjccYdqlZTzMQl/61jnnK0=; h=From:Subject:Date:To:Cc:From; b=sSkv6/jeOfLs6ZZVSKzF3ynFBoGQm6Rz7svuVhj5GlWMhaOOlBwxL4ucVljvlaPp8 2O0sTgFQOcelMLlW19FTlr1/paT4jeTrLFglHrnnOQMPiOAp+sWqCAhUqKJj4B7D9n qgeX02kbBpUUghAivQE3dfFvFUNiSThKucNy99hE= From: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= Subject: [PATCH RFC 0/5] kbuild: uapi: also test UAPI headers against C++ compilers Date: Sun, 08 Mar 2026 22:24:00 +0100 Message-Id: <20260308-kbuild-uapi-c-v1-0-86aae09a7f1d@weissschuh.net> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit X-B4-Tracking: v=1; b=H4sIAAAAAAAC/6tWKk4tykwtVrJSqFYqSi3LLM7MzwNyDHUUlJIzE vPSU3UzU4B8JSMDIzMDIyNj3eyk0sycFN3SxIJM3WRdQwsDA6NkyxTz5ERjJaCegqLUtMwKsHn RSkFuzkqxtbUAQ+YbOGQAAAA= X-Change-ID: 20260223-kbuild-uapi-c-18002c9d7ca3 To: Arnd Bergmann , Nathan Chancellor , Nicolas Schier Cc: linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org, David Howells , =?utf-8?q?Thomas_Wei=C3=9Fschuh?= X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1773005045; l=1377; i=linux@weissschuh.net; s=20221212; h=from:subject:message-id; bh=9Ck8dKyO7rN5xpHErcHVSmjccYdqlZTzMQl/61jnnK0=; b=BfRF2ak7oQAIdpnRDfBMFku8evXi1Dk1JvvgVI2uTjXZklTxlxARhkSLXmRL8qGliCnT0w4Rr yn7vxAOOH+7B2bVlJNvRbs8tYQAd9+1+XQ0F+CFuOLsQJ6CaUiWoO0O X-Developer-Key: i=linux@weissschuh.net; a=ed25519; pk=KcycQgFPX2wGR5azS7RhpBqedglOZVgRPfdFSPB1LNw= C++ language requirements differ from those of C. Also test the headers against C++ compilers to make sure no errors creep in accidentally. There was a previous attempt by David Howells[0], but today with the existing UAPI testing infrastructure the implementation is a bit nicer. This series does not derive from David's, as I found it only after writing my patches. [0] https://lore.kernel.org/lkml/nycvar.YFH.7.76.1809052120510.24932@n3.vanv.qr/ This depends on my other series "kbuild: uapi: remove usage of toolchain headers", which is currently in kbuild-next-unstable. Signed-off-by: Thomas Weißschuh --- Thomas Weißschuh (5): kbuild: uapi: move some compiler arguments out of the command definition kbuild: uapi: move all include path flags together kbuild: uapi: handle UML in architecture-specific exclusion lists kbuild: uapi: provide a C++ compatible dummy definition of NULL kbuild: uapi: also test UAPI headers against C++ compilers usr/dummy-include/stddef.h | 5 +++++ usr/include/Makefile | 47 ++++++++++++++++++++++++++++++++++++++-------- 2 files changed, 44 insertions(+), 8 deletions(-) --- base-commit: c14d8386b0a38d45a4345f556d6491be3594cf8e change-id: 20260223-kbuild-uapi-c-18002c9d7ca3 Best regards, -- Thomas Weißschuh