# Copyright 1999-2021 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=7

inherit toolchain-funcs
if [[ ${PV} == "9999" ]] ; then
	EGIT_REPO_URI="https://review.coreboot.org/flashrom.git"
	inherit git-r3
else
	MY_P="${PN}-v${PV}"
	SRC_URI="https://download.flashrom.org/releases/${MY_P}.tar.bz2"
	KEYWORDS="~amd64 ~arm ~arm64 ~ppc ~ppc64 ~x86"
	S="${WORKDIR}/${MY_P}"
fi

DESCRIPTION="Utility for reading, writing, erasing and verifying flash ROM chips"
HOMEPAGE="https://flashrom.org/"

LICENSE="GPL-2"
SLOT="0"
# The defaults match the upstream Makefile.
# Note: Do not list bitbang_spi as it is not a programmer; it's a backend used
# by some other spi programmers.
IUSE_PROGRAMMERS="
	atahpt
	+atapromise
	+atavia
	+buspirate-spi
	+ch341a-spi
	+dediprog
	+developerbox-spi
	+digilent-spi
	+drkaiser
	+dummy
	+ene-lpc
	+ft2232-spi
	+gfxnvidia
	+internal
	+it8212
	jlink-spi
	+linux-mtd
	+linux-spi
	lspcon-i2c-spi
	+mec1308
	mstarddc-spi
	+nic3com
	+nicintel
	+nicintel-eeprom
	+nicintel-spi
	nicnatsemi
	+nicrealtek
	+ogp-spi
	+pickit2-spi
	+pony-spi
	+raiden-debug-spi
	+rayer-spi
	realtek-mst-i2c-spi
	+satamv
	+satasii
	+serprog
	stlinkv3-spi
	+usbblaster-spi
"

IUSE="${IUSE_PROGRAMMERS} +internal-dmi static tools +wiki"

LIB_DEPEND="
	atahpt? ( sys-apps/pciutils[static-libs(+)] )
	atapromise? ( sys-apps/pciutils[static-libs(+)] )
	atavia? ( sys-apps/pciutils[static-libs(+)] )
	ch341a-spi? ( virtual/libusb:1[static-libs(+)] )
	dediprog? ( virtual/libusb:1[static-libs(+)] )
	developerbox-spi? ( virtual/libusb:1[static-libs(+)] )
	digilent-spi? ( virtual/libusb:1[static-libs(+)] )
	drkaiser? ( sys-apps/pciutils[static-libs(+)] )
	ft2232-spi? ( dev-embedded/libftdi:1=[static-libs(+)] )
	gfxnvidia? ( sys-apps/pciutils[static-libs(+)] )
	internal? ( sys-apps/pciutils[static-libs(+)] )
	it8212? ( sys-apps/pciutils[static-libs(+)] )
	jlink-spi? ( dev-embedded/libjaylink[static-libs(+)] )
	nic3com? ( sys-apps/pciutils[static-libs(+)] )
	nicintel-eeprom? ( sys-apps/pciutils[static-libs(+)] )
	nicintel-spi? ( sys-apps/pciutils[static-libs(+)] )
	nicintel? ( sys-apps/pciutils[static-libs(+)] )
	nicnatsemi? ( sys-apps/pciutils[static-libs(+)] )
	nicrealtek? ( sys-apps/pciutils[static-libs(+)] )
	ogp-spi? ( sys-apps/pciutils[static-libs(+)] )
	pickit2-spi? ( virtual/libusb:0[static-libs(+)] )
	rayer-spi? ( sys-apps/pciutils[static-libs(+)] )
	satamv? ( sys-apps/pciutils[static-libs(+)] )
	satasii? ( sys-apps/pciutils[static-libs(+)] )
	stlinkv3-spi? ( virtual/libusb:1[static-libs(+)] )
	usbblaster-spi? ( dev-embedded/libftdi:1=[static-libs(+)] )
"
RDEPEND="!static? ( ${LIB_DEPEND//\[static-libs(+)]} )"
DEPEND="${RDEPEND}
	static? ( ${LIB_DEPEND} )
	sys-apps/diffutils"
BDEPEND="virtual/pkgconfig"
RDEPEND+=" !internal-dmi? ( sys-apps/dmidecode )"

_flashrom_enable() {
	local c="CONFIG_${2:-$(echo "$1" | tr '[:lower:]-' '[:upper:]_')}"
	args+=( "${c}=$(usex $1 yes no)" )
}
flashrom_enable() {
	local u
	for u ; do _flashrom_enable "${u}" ; done
}

src_compile() {
	# Help keep things in sync.
	local sprogs=$(echo $(
		grep -o 'CONFIG_[A-Z0-9_]*' flashrom.c | \
			LC_ALL=C sort -u | \
			sed 's:^CONFIG_::' | \
			tr '[:upper:]_' '[:lower:]-' | \
			grep -v ni845x-spi))
	local eprogs=$(echo ${IUSE_PROGRAMMERS} | sed -E 's/\B[-+]\b//g')
	if [[ ${sprogs} != "${eprogs}" ]] ; then
		eerror "The ebuild needs to be kept in sync."
		eerror "IUSE set to: ${eprogs}"
		eerror "flashrom.c : ${sprogs}"
		die "sync IUSE to the list of source programmers"
	fi

	# Turn USE flags into CONFIG_xxx settings.
	local args=()
	flashrom_enable ${eprogs}
	_flashrom_enable wiki PRINT_WIKI
	_flashrom_enable static STATIC

	# You have to specify at least one programmer, and if you specify more than
	# one programmer you have to include either dummy or internal in the list.
	# We pick dummy as the default because internal requires libpci.
	if ! use internal && ! use dummy ; then
		if [[ ${#args[@]} -ne 1 ]] ; then
			ewarn "You have to specify at least one programmer, and if you specify"
			ewarn "more than one programmer, you have to enable either dummy or"
			ewarn "internal as well.  'dummy' will be the default now."
			args+=( CONFIG_DUMMY=yes )
		fi
	fi

	tc-export AR CC PKG_CONFIG RANLIB
	emake WARNERROR=no "${args[@]}" all libflashrom.a
}

src_install() {
	dosbin flashrom
	doman flashrom.8
	dodoc README Documentation/*.txt
	dolib.a libflashrom.a
	doheader libflashrom.h

	if use tools; then
		dosbin util/ich_descriptors_tool/ich_descriptors_tool
	fi
}