# Co-Maintainer: Achill Gilgenast <achill@achill.org>
maintainer="Aelin <aelin@postmarketos.org>"
pkgname=linux-postmarketos-lts
pkgver=6.18.23
pkgrel=0
_kver=${pkgver%.*}
pkgdesc="LTS Kernel"
# armhf: pmbootstrap cannot dynamically choose a defconfig, so it ends up using multi_v7_defconfig which isn't correct
# s390x: kconfigcheck is not ready for it yet
arch="all !armhf !s390x"
_flavor="lts"
url="https://kernel.org"
license="GPL-2.0-only"
options="
	!check
	!strip
	!tracedeps
	pmb:cross-native
	pmb:generic-kernel
	pmb:kconfigcheck-community
	pmb:kconfigcheck-immutable
	pmb:kconfigcheck-rust
	pmb:kconfigcheck-selinux
	pmb:kconfigcheck-uefi
	pmb:kconfigcheck-virt
"
makedepends="
	bison
	clang
	clang-libclang
	diffutils
	elfutils-dev
	findutils
	flex
	linux-headers
	lld
	llvm
	openssl-dev
	pahole
	perl
	postmarketos-installkernel
	python3
	rust
	rust-bindgen
	rust-src
	rustfmt
	sed
	zstd
"
replaces="linux-lts"

# powerpc boot wrapper patches:
# Necessary for compilation without cross GCC in PATH, cherry-picked from
# Nathan's fork, he does not have time to upstream them right now but would be
# happy if someone else did:
# https://lore.kernel.org/linuxppc-dev/aXs8sgAcci9FKKpx@luna/
source="
	linux-$_kver.tar.xz::https://cdn.kernel.org/pub/linux/kernel/v${pkgver%%.*}.x/linux-$_kver.tar.xz

	0001-WIP-arch-powerpc-boot-Support-LLVM-1-in-wrapper-scri.patch
	0002-WIP-arch-powerpc-boot-Use-z-notext-for-pseries-image.patch
	0003-WIP-arch-powerpc-boot-Add-z-norelro.patch

	config-lts.aarch64
	config-lts.armv7
	config-lts.loongarch64
	config-lts.ppc64le
	config-lts.riscv64
	config-lts.x86
	config-lts.x86_64
"
builddir="$srcdir/linux-$_kver"
_defconfig="defconfig"

if [ "${pkgver%.0}" = "$pkgver" ]; then
	# Prepend to apply first
	source="patch-$pkgver.patch.xz::https://cdn.kernel.org/pub/linux/kernel/v${pkgver%%.*}.x/patch-$pkgver.xz $source"
fi

case "$CARCH" in
	aarch64*) _carch="arm64" ;;
	arm*) _carch="arm" ;;
	loongarch*) _carch="loongarch" ;;
	ppc*) _carch="powerpc" ;;
	riscv*) _carch="riscv" ;;
	s390x) _carch="s390" ;;
	x86) _carch="i386" ;;
	x86_64) _carch="x86_64" ;;
esac

prepare() {
	default_prepare
	cp "$srcdir/config-$_flavor.$CARCH" .config
}

build() {
	unset LDFLAGS
	make ARCH="$_carch" LLVM=1 \
		KBUILD_BUILD_VERSION="$((pkgrel + 1 ))-$_flavor"
}

package() {
	local _install
	case "$CARCH" in
		arm*|aarch64|riscv*) _install="zinstall dtbs_install" ;;
		*) _install="install" ;;
	esac

	make modules_install $_install \
		ARCH="$_carch" \
		LLVM=1 \
		INSTALL_PATH="$pkgdir"/boot/ \
		INSTALL_MOD_PATH="$pkgdir" \
		INSTALL_MOD_STRIP=1 \
		INSTALL_DTBS_PATH="$pkgdir"/boot/dtbs

	rm -f "$pkgdir"/lib/modules/*/build "$pkgdir"/lib/modules/*/source

	install -D "$builddir"/include/config/kernel.release \
		"$pkgdir"/usr/share/kernel/$_flavor/kernel.release
}

sha512sums="
8973a9cae5bf26a1614351029ed4279469a4dcd81c4cce5da96ba394b8806a27da666f0c8ff001255b5430b06bb70bdb49352f6e41c70d0c33e3c5c108b9bf20  patch-6.18.23.patch.xz
88599ffdec96d150c1feb9b261ba93bb0301a9d0e1ad6bef7aeab1f5372cbfc57d8b43c7e902bd8f76921d1dbd8189663c142ea869e51d0e2b483b150ee00fe0  linux-6.18.tar.xz
1f11df2480e9f691573283597160b4c806e492cdca4825f3acb3afb70bde43abfab487bcde1f5553b431a702a0039479d041b0ce7859970e706b5a51d2ad8fb0  0001-WIP-arch-powerpc-boot-Support-LLVM-1-in-wrapper-scri.patch
26521a9c9ea769534095dc4e306babadc8bcbaf03d7faa523c377e41ba0f742ecd0490fa27791d895f729c3ae8845297dca59b4db2475e7f078e689c447430bc  0002-WIP-arch-powerpc-boot-Use-z-notext-for-pseries-image.patch
302c20c85559fc9b3b2420ed25be1bfbb76c87f2a470e4141c32e9542cf1f5c6b3b5a7847231a3eaa0f6bc0e5942d0c1599e807175dcf5e63469704c3d6adde3  0003-WIP-arch-powerpc-boot-Add-z-norelro.patch
e81fbd40d7f79c8de382242864e871384aa111ae02ac8afca15e5f9f12f8370b9ea646f8d6821628caa305203f7297138cbbe18a1d22a558a5c4b144660a001e  config-lts.aarch64
90e440b91908433e4cc9d13a4df3cb8e678b5c42ad394f38c430088fdff07e7b8caad2f38d44be6d1df9dd5c4e05465877cb6820572aeec2c3cf3b5d22cd502e  config-lts.armv7
ba6185373d435c3f20620268520c07ca5859afb750ea977e686d29ac232d8a357cd960a10a033e2eefbdcd0a77b6be3a26d29f1dec3884618563c09d3208aa9c  config-lts.loongarch64
59b41f1146890a6300c93fcba590f221bb43392d71364d201ceb7e6e5ab038c65c1cc7f23c22f547d235cd8cd14826a49ee8db26345dbbcd52127aa97a9526a8  config-lts.ppc64le
eb7d7744577e63f2a94c5b6fc1dcf231a92302cbcd92c8af370db5c1df257ae1719e4ae186ff829cf68e08dd2e632aa283db83843fda327248d4fd81f086349d  config-lts.riscv64
437b4e43297de5474e904d3e356767f07dd56ca30e3c45e30199871dd81b6e388f78c27a0390a3f931da39a95fdc5803181ed31d39c524178c88dcb00e11026a  config-lts.x86
ee1cf77a731611dfbb87b4154bc82268f0e81da5ec857df4aedb76a69dc2c1da6cb24678b44d4f186148b489daf6fb797e1d72f6576782ed0f1f5264d07a107c  config-lts.x86_64
"
