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

EAPI=7

inherit perl-module toolchain-funcs

DESCRIPTION="Performance and information monitoring tool"
HOMEPAGE="https://wpd.home.xs4all.nl/symon/"
SRC_URI="https://wpd.home.xs4all.nl/symon/philes/${P}.tar.gz"
S="${WORKDIR}"/${PN}

LICENSE="BSD-2"
SLOT="0"
KEYWORDS="~amd64 ~sparc ~x86"
IUSE="perl +symon symux"
REQUIRED_USE="|| ( perl symon symux )"

BDEPEND="dev-build/pmake"
RDEPEND="
	perl? ( dev-lang/perl )
	symux? ( net-analyzer/rrdtool )
"
DEPEND="${RDEPEND}"

# Deletes the directory passed as an argument from the internal pmake
# variable SUBDIR.
zap_subdir() {
	sed -i "/^SUBDIR/s|$1||" Makefile || die
}

src_prepare() {
	default

	sed -i \
		-e '/^[ \t]*${CC}.*\${LIBS}/s:\${CC}:$(CC) $(LDFLAGS):' \
		sym*/Makefile || die
}

src_configure() {
	use symon && USE_SYMON=1
	# Do some sed magic in accordance with the USE flags.
	use perl && [[ -z ${USE_SYMON} ]] && ! use symux && zap_subdir lib
	! use perl && zap_subdir client
	! use symux && zap_subdir symux
	[[ -z ${USE_SYMON} ]] && zap_subdir symon
}

src_compile() {
	pmake CC="$(tc-getCC)" CFLAGS+="${CFLAGS}" STRIP=true || die
}

src_install() {
	if [[ -n ${USE_SYMON} ]]; then
		insinto /etc
		doins "${FILESDIR}"/symon.conf

		newinitd "${FILESDIR}"/symon-init.d symon

		dodoc CHANGELOG HACKERS TODO

		doman symon/symon.8
		dosbin symon/symon
	fi

	if use perl; then
		dobin client/getsymonitem.pl

		perl_set_version
		insinto ${VENDOR_LIB}
		doins client/SymuxClient.pm
	fi

	if use symux; then
		insinto /etc
		doins "${FILESDIR}"/symux.conf

		newinitd "${FILESDIR}"/symux-init.d symux

		doman symux/symux.8
		dosbin symux/symux

		insinto /usr/share/symon
		doins symux/c_smrrds.sh
		fperms a+x /usr/share/symon/c_smrrds.sh

		dodir /var/lib/symon/rrds/localhost
	fi
}

pkg_postinst() {
	if use symux; then
		elog "The RRDs files can be obtained by running"
		elog "/usr/share/symon/c_smrrds.sh all."
		elog "For information about migrating RRDs from a previous"
		elog "symux version read the LEGACY FORMATS section of symux(8)."
		elog "To view the rrdtool pictures of the stored data, emerge"
		elog "net-analyzer/syweb."
	fi
}