82a1978d0f
The 'cpio' command is used solely for copying header files to the
temporary directory. However, there is no strong reason to use 'cpio'
for this purpose. For example, scripts/package/install-extmod-build
uses the 'tar' command to copy files.
This commit replaces the use of 'cpio' with 'tar' because 'tar' is
already used in this script to generate kheaders_data.tar.xz anyway.
Performance-wide, there is no significant difference between 'cpio'
and 'tar'.
[Before]
$ rm -fr kheaders; mkdir kheaders
$ time sh -c '
for f in include arch/x86/include
do
find "$f" -name "*.h"
done | cpio --quiet -pd kheaders
'
real 0m0.148s
user 0m0.021s
sys 0m0.140s
[After]
$ rm -fr kheaders; mkdir kheaders
$ time sh -c '
for f in include arch/x86/include
do
find "$f" -name "*.h"
done | tar -c -f - -T - | tar -xf - -C kheaders
'
real 0m0.098s
user 0m0.024s
sys 0m0.131s
Revert commit 69ef0920bd ("Docs: Add cpio requirement to changes.rst")
because 'cpio' is not used anywhere else during the kernel build.
Please note that the built-in initramfs is created by the in-tree tool,
usr/gen_init_cpio, so it does not rely on the external 'cpio' command
at all.
Remove 'cpio' from the package build dependencies as well.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
131 lines
3.2 KiB
Bash
131 lines
3.2 KiB
Bash
# SPDX-License-Identifier: GPL-2.0-only
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# Maintainer: Thomas Weißschuh <linux@weissschuh.net>
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# Contributor: Jan Alexander Steffens (heftig) <heftig@archlinux.org>
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pkgbase=${PACMAN_PKGBASE:-linux-upstream}
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pkgname=("${pkgbase}")
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_extrapackages=${PACMAN_EXTRAPACKAGES-headers api-headers debug}
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for pkg in $_extrapackages; do
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pkgname+=("${pkgbase}-${pkg}")
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done
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pkgver="${KERNELRELEASE//-/_}"
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# The PKGBUILD is evaluated multiple times.
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# Running scripts/build-version from here would introduce inconsistencies.
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pkgrel="${KBUILD_REVISION}"
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pkgdesc='Upstream Linux'
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url='https://www.kernel.org/'
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# Enable flexible cross-compilation
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arch=(${CARCH})
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license=(GPL-2.0-only)
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makedepends=(
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bc
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bison
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flex
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gettext
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kmod
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libelf
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openssl
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pahole
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perl
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python
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rsync
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tar
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)
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options=(!debug !strip !buildflags !makeflags)
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_prologue() {
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# MAKEFLAGS from makepkg.conf override the ones inherited from kbuild.
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# Bypass this override with a custom variable.
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export MAKEFLAGS="${KBUILD_MAKEFLAGS}"
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# Kbuild works in the output directory, where this PKGBUILD is located.
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cd "$(dirname "${BASH_SOURCE[0]}")"
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}
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build() {
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_prologue
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${MAKE} KERNELRELEASE="${KERNELRELEASE}" KBUILD_BUILD_VERSION="${pkgrel}"
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}
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_package() {
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pkgdesc="The ${pkgdesc} kernel and modules"
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local modulesdir="${pkgdir}/usr/${MODLIB}"
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_prologue
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echo "Installing boot image..."
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# systemd expects to find the kernel here to allow hibernation
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# https://github.com/systemd/systemd/commit/edda44605f06a41fb86b7ab8128dcf99161d2344
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install -Dm644 "$(${MAKE} -s image_name)" "${modulesdir}/vmlinuz"
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# Used by mkinitcpio to name the kernel
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echo "${pkgbase}" > "${modulesdir}/pkgbase"
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echo "Installing modules..."
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${MAKE} INSTALL_MOD_PATH="${pkgdir}/usr" INSTALL_MOD_STRIP=1 \
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DEPMOD=true modules_install
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if [ -d "${srctree}/arch/${SRCARCH}/boot/dts" ]; then
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echo "Installing dtbs..."
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${MAKE} INSTALL_DTBS_PATH="${modulesdir}/dtb" dtbs_install
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fi
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# remove build link, will be part of -headers package
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rm -f "${modulesdir}/build"
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}
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_package-headers() {
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pkgdesc="Headers and scripts for building modules for the ${pkgdesc} kernel"
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local builddir="${pkgdir}/usr/${MODLIB}/build"
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_prologue
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if grep -q CONFIG_MODULES=y include/config/auto.conf; then
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echo "Installing build files..."
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"${srctree}/scripts/package/install-extmod-build" "${builddir}"
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fi
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echo "Installing System.map and config..."
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mkdir -p "${builddir}"
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cp System.map "${builddir}/System.map"
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cp .config "${builddir}/.config"
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echo "Adding symlink..."
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mkdir -p "${pkgdir}/usr/src"
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ln -sr "${builddir}" "${pkgdir}/usr/src/${pkgbase}"
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}
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_package-api-headers() {
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pkgdesc="Kernel headers sanitized for use in userspace"
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provides=(linux-api-headers="${pkgver}")
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conflicts=(linux-api-headers)
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_prologue
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${MAKE} headers_install INSTALL_HDR_PATH="${pkgdir}/usr"
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}
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_package-debug(){
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pkgdesc="Non-stripped vmlinux file for the ${pkgdesc} kernel"
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local debugdir="${pkgdir}/usr/src/debug/${pkgbase}"
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local builddir="${pkgdir}/usr/${MODLIB}/build"
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_prologue
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install -Dt "${debugdir}" -m644 vmlinux
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mkdir -p "${builddir}"
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ln -sr "${debugdir}/vmlinux" "${builddir}/vmlinux"
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}
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for _p in "${pkgname[@]}"; do
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eval "package_$_p() {
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$(declare -f "_package${_p#$pkgbase}")
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_package${_p#$pkgbase}
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}"
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done
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