device/linux-purism-librem5dev: new package (!141)

device/linux-purism-librem5dev/APKBUILD

+# Reference: <https://postmarketos.org/vendorkernel>
+# Kernel config based on: arch/arm64/configs/librem5-evk_defconfig
+
+pkgname="linux-purism-librem5dev"
+pkgver=4.18
+pkgrel=1
+pkgdesc="Purism Librem 5 devkit kernel fork"
+arch="aarch64"
+_carch="arm64"
+_flavor="purism-librem5"
+url="https://kernel.org"
+license="GPL-2.0-only"
+options="!strip !check !tracedeps"
+makedepends="perl sed installkernel bash gmp-dev bc linux-headers elfutils-dev
+	     devicepkg-dev bison flex openssl-dev"
+
+# Compiler: latest GCC from Alpine
+HOSTCC="${CC:-gcc}"
+HOSTCC="${HOSTCC#${CROSS_COMPILE}}"
+
+# Source
+_repository="linux-emcraft"
+_commit="a7417560d3d9523c87f429e37b3ca5fefa56e2ab"
+_config="config-${_flavor}.${arch}"
+source="
+	$pkgname-$_commit.tar.gz::https://source.puri.sm/Librem5/${_repository}/-/archive/${_commit}.tar.gz
+	$_config
+"
+builddir="$srcdir/${_repository}-${_commit}"
+
+prepare() {
+	default_prepare
+	downstreamkernel_prepare "$srcdir" "$builddir" "$_config" "$_carch" "$HOSTCC"
+}
+
+build() {
+	unset LDFLAGS
+	make ARCH="$_carch" CC="${CC:-gcc}" \
+		KBUILD_BUILD_VERSION="$((pkgrel + 1 ))-postmarketOS"
+}
+
+package() {
+	# kernel.release
+	install -D "$builddir/include/config/kernel.release" \
+		"$pkgdir/usr/share/kernel/$_flavor/kernel.release"
+
+	# zImage (find the right one)
+	cd "$builddir/arch/$_carch/boot"
+	_target="$pkgdir/boot/vmlinuz-$_flavor"
+	for _zimg in zImage-dtb Image.gz-dtb *zImage Image; do
+		[ -e "$_zimg" ] || continue
+		msg "zImage found: $_zimg"
+		install -Dm644 "$_zimg" "$_target"
+		break
+	done
+	if ! [ -e "$_target" ]; then
+		error "Could not find zImage in $PWD!"
+		return 1
+	fi
+	cd "$builddir"
+	local _install
+	case "$CARCH" in
+	aarch64*|arm*)	_install="modules_install dtbs_install" ;;
+	*)		_install="modules_install" ;;
+	esac
+
+	make -j1 $_install \
+		ARCH="$_carch" \
+		INSTALL_MOD_PATH="$pkgdir" \
+		INSTALL_DTBS_PATH="$pkgdir/usr/share/dtb"
+
+}
+
+sha512sums="343c1effabdf857e3c67e94cdd5680018332d4fd12e94e9f26857947dc89c9e361a6a49ff63be402e96f3890ac72eda9cf9049e04111ba0fe78af183c588aec7  linux-purism-librem5dev-a7417560d3d9523c87f429e37b3ca5fefa56e2ab.tar.gz
+c82903860e32c1fafd0600afe54f96cf88f0f7790f77384e3205e7b240e87fe066d4caaf7507eb5dc9874a758253c38a224107547d6dfff8047588c73115ca89  config-purism-librem5.aarch64"