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[192.35.17.28]) by gmr-mx.google.com with ESMTPS id t4si174027edt.2.2018.02.09.09.30.40 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 09 Feb 2018 09:30:40 -0800 (PST) Received-SPF: pass (google.com: domain of henning.schild@siemens.com designates 192.35.17.28 as permitted sender) client-ip=192.35.17.28; Authentication-Results: gmr-mx.google.com; spf=pass (google.com: domain of henning.schild@siemens.com designates 192.35.17.28 as permitted sender) smtp.mailfrom=henning.schild@siemens.com Received: from mail2.siemens.de (mail2.siemens.de [139.25.208.11]) by goliath.siemens.de (8.15.2/8.15.2) with ESMTPS id w19HUe6V009863 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Fri, 9 Feb 2018 18:30:40 +0100 Received: from mmd1pvb1c.ad001.siemens.net (md1pvb1c.ad001.siemens.net [139.25.68.40] (may be forged)) by mail2.siemens.de (8.15.2/8.15.2) with ESMTP id w19HUdLQ009491; Fri, 9 Feb 2018 18:30:39 +0100 Date: Fri, 9 Feb 2018 18:30:39 +0100 From: Henning Schild To: "[ext] Jan Kiszka" Cc: isar-users Subject: Re: [PATCH v2 5/8] Provide include file for easy custom kernel builds Message-ID: <20180209183039.537f17d6@mmd1pvb1c.ad001.siemens.net> In-Reply-To: <8ee0db162e27f31b64bc17eaf00d24f7b488806e.1518110579.git.jan.kiszka@siemens.com> References: <8ee0db162e27f31b64bc17eaf00d24f7b488806e.1518110579.git.jan.kiszka@siemens.com> X-Mailer: Claws Mail 3.15.0-dirty (GTK+ 2.24.31; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-TUID: IlfVWJzCBYyw Am Thu, 8 Feb 2018 18:22:56 +0100 schrieb "[ext] Jan Kiszka" : > From: Jan Kiszka > > With this include file, it becomes almost trivial to replace the > distro kernel with a custom build. You just need to include > linux-custom.inc, specify the source URI, define via S where the > source is unpacked to and provide a defconfig. To switch to a custom > kernel recipe, PREFERRED_PROVIDER_virtual/kernel has to be adjusted > in local.conf or the distro conf. > > The approach works internally by first running "make deb-pkg" on the > kernel and the repackages the output to make the binary linux-image > and linux-header debs act as replacement of their distro packages. > This results in a suboptimal technical implementation which may > eventually be replaced by an isar-implemented deb-pkg build process. > However, this is not expected to affect the user-visible interface of > this include file. > > Signed-off-by: Jan Kiszka > --- > meta/recipes-kernel/linux/linux-custom.inc | 98 > ++++++++++++++++++++++++++++++ 1 file changed, 98 insertions(+) > create mode 100644 meta/recipes-kernel/linux/linux-custom.inc > > diff --git a/meta/recipes-kernel/linux/linux-custom.inc > b/meta/recipes-kernel/linux/linux-custom.inc new file mode 100644 > index 0000000..feb96a1 > --- /dev/null > +++ b/meta/recipes-kernel/linux/linux-custom.inc > @@ -0,0 +1,98 @@ > +# Custom kernel recipe include > +# > +# This software is a part of ISAR. > +# Copyright (c) Siemens AG, 2018 > +# > +# SPDX-License-Identifier: MIT > + > +DESCRIPTION ?= "Custom kernel" > +PROVIDES = "virtual/kernel" > + > +inherit dpkg-base > + > +KERNEL_DEBIAN_DEPENDS = "initramfs-tools | linux-initramfs-tool, > kmod, linux-base (>= 4.3~)" +KERNEL_HEADERS_DEBIAN_DEPENDS = "libc6, > libssl1.1, gcc" +KBUILD_DEPENDS = "libssl-dev libelf-dev bc" These guys and the repacking are here because someone wrote a build-script that does not allow customization, how about not repeating that mistake and using "?=". Henning > +REPACK_DIR = "${PP}/repack" > +REPACK_LINUX_IMAGE_DIR = "${REPACK_DIR}/linux-image" > +REPACK_LINUX_HEADERS_DIR = "${REPACK_DIR}/linux-headers" > + > +dpkg_runbuild() { > + E="${@ bb.utils.export_proxies(d)}" > + sudo -E chroot ${BUILDCHROOT_DIR} sh -c ' > + set -e > + > + apt-get install -y -o Debug::pkgProblemResolver=yes \ > + --no-install-recommends ${KBUILD_DEPENDS} > + > + cd ${PP}/${S} > + cp ../defconfig .config > + make olddefconfig > + > + make -j ${@bb.utils.cpu_count() * 2} deb-pkg > + > + rm -rf ${REPACK_DIR} > + mkdir -p ${REPACK_DIR} > + mkdir -p ${REPACK_LINUX_IMAGE_DIR} > + mkdir -p ${REPACK_LINUX_HEADERS_DIR} > + > + cd ${PP} > + tar xzf linux-${PV}_${PV}-1.debian.tar.gz -C > ${REPACK_DIR} > + dpkg-deb -R > linux-image-${PV}_${PV}-1_${KERNEL_ARCH}.deb \ > + ${REPACK_LINUX_IMAGE_DIR} > + dpkg-deb -R > linux-headers-${PV}_${PV}-1_${KERNEL_ARCH}.deb \ > + ${REPACK_LINUX_HEADERS_DIR} > + > + dpkg-gencontrol -crepack/debian/control \ > + -lrepack/debian/changelog \ > + -frepack/debian/files \ > + -plinux-image-${PV} \ > + -P${REPACK_LINUX_IMAGE_DIR} \ > + -DPackage="linux-image-${KERNEL_ARCH}" \ > + -DSection=kernel \ > + -DPriority=required \ > + -DProvides="${PN}" \ > + -DDepends="${KERNEL_DEBIAN_DEPENDS}" > + > + # Add Debian-like link installation to postinst > + touch > ${REPACK_LINUX_IMAGE_DIR}/lib/modules/${PV}/.fresh-install > + sed -i ${REPACK_LINUX_IMAGE_DIR}/DEBIAN/postinst \ > + -e "/^set -e$/a\\ > +\\ > +if [ -f /lib/modules/${PV}/.fresh-install ]; then\\ > + change=install\\ > +else\\ > + change=upgrade\\ > +fi\\ > +linux-update-symlinks \$change ${PV} /boot/vmlinuz-${PV}\\ > +rm -f /lib/modules/${PV}/.fresh-install" > + > + # Add Debian-like link removal to postrm > + sed -i ${REPACK_LINUX_IMAGE_DIR}/DEBIAN/postrm \ > + -e "/^set -e$/a\\ > +\\ > +rm -f /lib/modules/${PV}/.fresh-install\\ > +\\ > +if [ \"\$1\" != upgrade ] && command -v linux-update-symlinks > >/dev/null; then\\ > + linux-update-symlinks remove ${PV} /boot/vmlinuz-${PV}\\ > +fi" > + > + dpkg-gencontrol -crepack/debian/control \ > + -lrepack/debian/changelog \ > + -frepack/debian/files \ > + -plinux-headers-${PV} \ > + -P${REPACK_LINUX_HEADERS_DIR} \ > + -Vkernel:debarch="${KERNEL_ARCH}" \ > + -DPackage="linux-headers-${KERNEL_ARCH}" \ > + -DSection=kernel \ > + -DDepends="${KERNEL_HEADERS_DEBIAN_DEPENDS}" > + > + dpkg-deb -b ${REPACK_LINUX_IMAGE_DIR} \ > + > linux-image-${KERNEL_ARCH}_${PV}-1_${KERNEL_ARCH}.deb > + rm -f linux-image-${PV}_${PV}-1_${KERNEL_ARCH}.deb > + dpkg-deb -b ${REPACK_LINUX_HEADERS_DIR} \ > + > linux-headers-${KERNEL_ARCH}_${PV}-1_${KERNEL_ARCH}.deb > + rm -f linux-headers-${PV}_${PV}-1_${KERNEL_ARCH}.deb > + ' > +}