# Copyright 1999-2024 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=7

inherit autotools flag-o-matic

BITCOINCORE_COMMITHASH="a0988140b71485ad12c3c3a4a9573f7c21b1eff8"
KNOTS_PV="${PV}.knots20211108"
KNOTS_P="bitcoin-${KNOTS_PV}"

DESCRIPTION="Bitcoin Core consensus library"
HOMEPAGE="https://bitcoincore.org/ https://bitcoinknots.org/"
SRC_URI="
	https://github.com/bitcoin/bitcoin/archive/${BITCOINCORE_COMMITHASH}.tar.gz -> bitcoin-v${PV}.tar.gz
	https://bitcoinknots.org/files/22.x/${KNOTS_PV}/${KNOTS_P}.patches.txz -> ${KNOTS_P}.patches.tar.xz
"

LICENSE="MIT"
SLOT="0"
KEYWORDS="~amd64 ~arm ~arm64 ~mips ~ppc ~ppc64 ~x86 ~amd64-linux ~x86-linux"
IUSE="+asm +knots"

RDEPEND="
	>dev-libs/libsecp256k1-0.1_pre20200911:=[recovery,schnorr]
"
DEPEND="${RDEPEND}"
BDEPEND="
	>=dev-build/automake-1.13
	|| ( >=sys-devel/gcc-7[cxx] >=sys-devel/clang-5 )
"

DOCS=( doc/bips.md doc/release-notes.md doc/shared-libraries.md )

S="${WORKDIR}/bitcoin-${BITCOINCORE_COMMITHASH}"

pkg_pretend() {
	if use knots; then
		elog "You are building ${PN} from Bitcoin Knots."
		elog "For more information, see:"
		elog "https://bitcoinknots.org/files/22.x/${KNOTS_PV}/${KNOTS_P}.desc.html"
	else
		elog "You are building ${PN} from Bitcoin Core."
		elog "For more information, see:"
		elog "https://bitcoincore.org/en/2021/09/13/release-${PV}/"
	fi

	if [[ ${MERGE_TYPE} != "binary" ]] ; then
		if ! test-flag-CXX -std=c++17 ; then
			die "Building ${CATEGORY}/${P} requires at least GCC 7 or Clang 5"
		fi
	fi
}

src_prepare() {
	local knots_patchdir="${WORKDIR}/${KNOTS_P}.patches/"

	eapply "${knots_patchdir}/${KNOTS_P}_p1-syslibs.patch"

	if use knots; then
		eapply "${knots_patchdir}/${KNOTS_P}_p2-fixes.patch"
		eapply "${knots_patchdir}/${KNOTS_P}_p3-features.patch"
		eapply "${knots_patchdir}/${KNOTS_P}_p4-branding.patch"
		eapply "${knots_patchdir}/${KNOTS_P}_p5-ts.patch"
	fi

	eapply "${FILESDIR}/22-compat-libsecp256k1-secp256k1_schnorrsig_verify.patch"
	# NOTE: libbitcoinconsensus does not build/use the 'sign' variant

	default

	eautoreconf
	rm -r src/leveldb src/secp256k1 || die
}

src_configure() {
	local my_econf=(
		$(use_enable asm)
		--without-qtdbus
		--disable-ebpf
		--without-natpmp
		--without-qrencode
		--without-miniupnpc
		--disable-tests
		--disable-wallet
		--disable-zmq
		--with-libs
		--disable-util-cli
		--disable-util-tx
		--disable-util-util
		--disable-util-wallet
		--disable-bench
		--without-daemon
		--without-gui
		--disable-fuzz
		--disable-fuzz-binary
		--disable-ccache
		--disable-static
		--with-system-libsecp256k1
	)
	econf "${my_econf[@]}"
}

src_install() {
	default

	find "${D}" -name '*.la' -delete || die
}