# Copyright 1999-2026 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=9

inherit autotools flag-o-matic

DESCRIPTION="GNU Linear Programming Kit"
HOMEPAGE="https://www.gnu.org/software/glpk/"
SRC_URI="mirror://gnu/${PN}/${P}.tar.gz"

LICENSE="GPL-3"
SLOT="0/40"
KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~loong ~ppc ~ppc64 ~riscv ~sparc ~x86"
IUSE="doc examples mysql"

BDEPEND="virtual/pkgconfig"
DEPEND="
	dev-libs/gmp:0=
	sci-libs/amd:0=
	sci-libs/colamd:=
	virtual/zlib:=
	mysql? (
		dev-db/mysql-connector-c
		dev-libs/libltdl
	)"
RDEPEND="${DEPEND}"

PATCHES=(
	"${FILESDIR}"/${PN}-4.65-fix-mysql-include-prefix.patch
	"${FILESDIR}"/${PN}-4.65-debundle-system-libs.patch
	"${FILESDIR}"/${PN}-5.0-aliasing.patch
)

src_prepare() {
	# Newer GNU standards fail to compile thanks to "bool", while using
	# ISO C17 breaks thread safety... and also fails to compile.
	append-cflags -std=gnu17

	default

	eautoreconf

	# GLPK's config.h.in is handwritten so autoheader will normally
	# refuse to overwrite it when we call autoreconf (bug 983432). The
	# generated header contains all of the preprocessor constants that
	# the handwritten one does though, and the new ones do not appear
	# in the codebase, so it should be fine.
	eautoheader --replace-handwritten
}

src_configure() {
	econf --disable-static \
		--disable-odbc \
		--with-gmp \
		$(use_enable mysql dl) \
		$(use_enable mysql)
}

src_install() {
	default

	if use examples; then
		# The top-level Makefile descends into the "examples" directory
		# unconditionally, building a program and excreting build
		# artifacts that we don't want to install. Note: this still
		# leaves the example program /usr/bin/glpsol installed. An
		# additional "emake ... uninstall" could probably take care
		# of that if desired.
		emake -C examples clean

		# Installing the Makefiles for the examples does the user no
		# good without the top-level Makefile.
		rm examples/Makefile{.in,.am,} \
			|| die "failed to remove example Makefiles"

		insinto "/usr/share/doc/${PF}"
		doins -r examples
		docompress -x "/usr/share/doc/${PF}/examples"
	fi

	use doc && dodoc doc/*.pdf doc/notes/*.pdf doc/*.txt

	# no static archives
	find "${D}" -name '*.la' -delete || die
}