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Mon, 14 Sep 2026 01:21:53 -0700 (PDT) Received: from WL2200093.evs.tv ([74.221.142.215]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-486eb34e4b5sm24880218f8f.22.2026.09.14.01.21.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 14 Sep 2026 01:21:52 -0700 (PDT) From: Fred Lefranc To: buildroot@buildroot.org Cc: Fred Lefranc Date: Mon, 14 Sep 2026 10:21:35 +0200 Message-ID: <20260914082138.2802-1-fred.lefranc.evs@gmail.com> X-Mailer: git-send-email 2.43.0 MIME-Version: 1.0 Subject: [Buildroot] [PATCH] package/qt6/qt6base: don't require gbm for eglfs X-BeenThere: buildroot@buildroot.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: Discussion and development of buildroot List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: buildroot-bounces@buildroot.org Sender: "buildroot" From: Fred Lefranc Hi all, While trying to enable Qt 6 with the eglfs eglfs_viv backend on a 32-bit i.MX6 target (imx-gpu-viv, framebuffer output), I hit the package dependency-chain consistency error, because qt6base pulls in libgbm/libdrm unconditionally for eglfs even though the Vivante framebuffer EGL integration needs neither. The root cause is that qt6base treats GBM as a hard requirement for *all* of eglfs, whereas GBM/KMS is only needed by the eglfs_kms backend. This patch decouples the two: eglfs now only requires libegl, and GBM/KMS support is enabled conditionally when a gbm provider is available. Tested: - i.MX6Q (Cortex-A9, glibc, EABIhf), imx-gpu-viv FB output: qt6base builds, libqeglfs-viv-integration.so is produced, and a Qt app runs with -platform eglfs / QT_QPA_EGLFS_INTEGRATION=eglfs_viv. I wasn't sure whether maintainers prefer keeping a Config.in comment to explain that eglfs without gbm only provides vendor/fb backends - happy to add one. Feedback welcome. Thanks, Fred Fred Lefranc (1): package/qt6/qt6base: don't require gbm for eglfs package/qt6/qt6base/Config.in | 2 +- package/qt6/qt6base/qt6base.mk | 12 ++++++++++-- 2 files changed, 11 insertions(+), 3 deletions(-) -- 2.34.1 _______________________________________________ buildroot mailing list buildroot@buildroot.org https://lists.buildroot.org/mailman/listinfo/buildroot