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{ "id": 25682, "url": "https://patchwork.libcamera.org/api/1.1/covers/25682/?format=api", "web_url": "https://patchwork.libcamera.org/cover/25682/", "project": { "id": 1, "url": "https://patchwork.libcamera.org/api/1.1/projects/1/?format=api", "name": "libcamera", "link_name": "libcamera", "list_id": "libcamera_core", "list_email": "libcamera-devel@lists.libcamera.org", "web_url": "", "scm_url": "", "webscm_url": "" }, "msgid": "<20260107193607.2168539-1-barnabas.pocze@ideasonboard.com>", "date": "2026-01-07T19:36:02", "name": "[RFC,v1,0/5] C++20 migration", "submitter": { "id": 216, "url": "https://patchwork.libcamera.org/api/1.1/people/216/?format=api", "name": "Barnabás Pőcze", "email": "barnabas.pocze@ideasonboard.com" }, "mbox": "https://patchwork.libcamera.org/cover/25682/mbox/", "series": [ { "id": 5694, "url": "https://patchwork.libcamera.org/api/1.1/series/5694/?format=api", "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=5694", "date": "2026-01-07T19:36:02", "name": "C++20 migration", "version": 1, "mbox": "https://patchwork.libcamera.org/series/5694/mbox/" } ], "comments": "https://patchwork.libcamera.org/api/covers/25682/comments/", "headers": { "Return-Path": "<libcamera-devel-bounces@lists.libcamera.org>", "X-Original-To": "parsemail@patchwork.libcamera.org", "Delivered-To": "parsemail@patchwork.libcamera.org", "Received": [ "from lancelot.ideasonboard.com (lancelot.ideasonboard.com\n\t[92.243.16.209])\n\tby patchwork.libcamera.org (Postfix) with ESMTPS id BB66DBDCBF\n\tfor <parsemail@patchwork.libcamera.org>;\n\tWed, 7 Jan 2026 19:36:16 +0000 (UTC)", "from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id F398461FC0;\n\tWed, 7 Jan 2026 20:36:15 +0100 (CET)", "from perceval.ideasonboard.com (perceval.ideasonboard.com\n\t[213.167.242.64])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 5A19261F84\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tWed, 7 Jan 2026 20:36:13 +0100 (CET)", "from pb-laptop.local (185.221.143.114.nat.pool.zt.hu\n\t[185.221.143.114])\n\tby perceval.ideasonboard.com (Postfix) with ESMTPSA id 4C249B7D;\n\tWed, 7 Jan 2026 20:35:51 +0100 (CET)" ], "Authentication-Results": "lancelot.ideasonboard.com; dkim=pass (1024-bit key;\n\tunprotected) header.d=ideasonboard.com header.i=@ideasonboard.com\n\theader.b=\"WJYw2niw\"; dkim-atps=neutral", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com;\n\ts=mail; t=1767814551;\n\tbh=40agxkfyPh/eSJH297SyKM6AZKqxQ7ndUP994bZ+Zs4=;\n\th=From:To:Cc:Subject:Date:From;\n\tb=WJYw2niwiPnPfRDMqQKUUlQCD3DRLhpZfxXOtYnaSKW1Tbeb4U9AxMmgcqQ2EwuBK\n\t3Ke4DIHHsaaB9Budj8zfb6smfSyenLIwU4QOlZu3F5LQ1JBVTLaeok7TQjLmL/zu+L\n\tZAtslgIXhw2I6FFemXCaq4lmiAf8SL6higz/h+Hk=", "From": "=?utf-8?q?Barnab=C3=A1s_P=C5=91cze?= <barnabas.pocze@ideasonboard.com>", "To": "libcamera-devel@lists.libcamera.org", "Cc": "Naushir Patuck <naush@raspberrypi.com>", "Subject": "[RFC PATCH v1 0/5] C++20 migration", "Date": "Wed, 7 Jan 2026 20:36:02 +0100", "Message-ID": "<20260107193607.2168539-1-barnabas.pocze@ideasonboard.com>", "X-Mailer": "git-send-email 2.52.0", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=UTF-8", "Content-Transfer-Encoding": "8bit", "X-BeenThere": "libcamera-devel@lists.libcamera.org", "X-Mailman-Version": "2.1.29", "Precedence": "list", "List-Id": "<libcamera-devel.lists.libcamera.org>", "List-Unsubscribe": "<https://lists.libcamera.org/options/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=unsubscribe>", "List-Archive": "<https://lists.libcamera.org/pipermail/libcamera-devel/>", "List-Post": "<mailto:libcamera-devel@lists.libcamera.org>", "List-Help": "<mailto:libcamera-devel-request@lists.libcamera.org?subject=help>", "List-Subscribe": "<https://lists.libcamera.org/listinfo/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=subscribe>", "Errors-To": "libcamera-devel-bounces@lists.libcamera.org", "Sender": "\"libcamera-devel\" <libcamera-devel-bounces@lists.libcamera.org>" }, "content": "This is a proof of concept patch set containing the changes needed to\nmake the current CI jobs succeed with cpp_std=c++20.\n\nThere is still at least one issue that seemingly only appears in C++20,\nand which needs more analysis and testing: https://gitlab.freedesktop.org/camera/libcamera/-/issues/267\n\nBarnabás Pőcze (5):\n gstreamer: Add `-Wno-volatile` for GCC\n meson: Ignore `Wredundant-move` with GCC 11 and above\n libcamera: base: log: Ignore deprecations\n treewide: Use character literal instead of string in some cases\n meson: Switch to C++20\n\n meson.build | 4 ++--\n src/gstreamer/meson.build | 7 +++++++\n src/libcamera/base/log.cpp | 17 +++++++++++------\n src/libcamera/media_pipeline.cpp | 6 +++---\n src/libcamera/pipeline/simple/simple.cpp | 6 +++---\n 5 files changed, 26 insertions(+), 14 deletions(-)\n\n--\n2.52.0" }