# Maintainer: Alejandro Tafalla <atafalla@dnyon.com>
pkgname=lk2nd-msm8953
pkgver=0.3.1
pkgrel=1
pkgdesc="Secondary little kernel (lk) bootloader for msm8953 based devices"
arch="aarch64"
url="https://github.com/msm8953-mainline/lk2nd"
license="MIT AND GPL-2.0-only"
makedepends="dtc dtc-dev gcc-arm-none-eabi python3 py3-libfdt"
builddir="$srcdir"/lk2nd-$pkgver
source="lk2nd-$pkgver.tar.gz::https://github.com/msm8953-mainline/lk2nd/archive/refs/tags/$pkgver.tar.gz"
options="!check !archcheck !tracedeps !strip pmb:cross-native"
# This APKBUILD builds bare metal executable; options are very specific!
# * there are no tests (how do you even test the bootloader?);
# * binaries are "arch-independent"; aarch64 build also produces armv7 binary,
#   because ARM CPUs boot in 32-bit mode;
# * there are no depends for bootloader, it's a kernel and OS in one binary;
# * stripping of unused sections is done in lk2nd's own ld script.

build() {
	# This builds baremetal executable; distro-specific compiler flags
	#   and optimizations can't be set by build system.
	unset CFLAGS
	unset CXXFLAGS
	unset CPPFLAGS
	unset LDFLAGS
	unset CROSS_COMPILE
	unset CC
	unset CXX

	# ccache and crossdirect "gcc"s are in PATH, get rid of them too,
	#    redefine PATH to be bare minimum
	unset PATH
	export PATH=/usr/sbin:/usr/bin:/sbin:/bin

	make TOOLCHAIN_PREFIX=arm-none-eabi- msm8953-secondary
}

package() {
	# main package is empty
	install -Dm644 "$builddir"/build-msm8953-secondary/lk2nd.img -t \
		"$pkgdir"/boot
}
sha512sums="
7ec3d166ffc1f1f62ffb1581adbf74b1f9e61f2261eb8dfeed2b8e11f0266451530d900c0b56022541e615e6e0d1c5964bd2424d889731ffcfdd2068808f7a5e  lk2nd-0.3.1.tar.gz
"