# Copyright 1999-2020 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=7

inherit flag-o-matic toolchain-funcs

DESCRIPTION="GNU regular expression matcher"
HOMEPAGE="https://www.gnu.org/software/grep/"
SRC_URI="mirror://gnu/${PN}/${P}.tar.xz
	mirror://gentoo/${P}.tar.xz"

LICENSE="GPL-3+"
SLOT="0"
KEYWORDS="~alpha amd64 arm arm64 hppa ~ia64 ~m68k ~mips ppc ppc64 ~riscv ~s390 sparc x86 ~ppc-aix ~x64-cygwin ~amd64-linux ~x86-linux ~ppc-macos ~x64-macos ~x86-macos ~m68k-mint ~sparc-solaris ~sparc64-solaris ~x64-solaris ~x86-solaris"
IUSE="nls pcre static"

LIB_DEPEND="pcre? ( >=dev-libs/libpcre-7.8-r1[static-libs(+)] )"
RDEPEND="!static? ( ${LIB_DEPEND//\[static-libs(+)]} )
	nls? ( virtual/libintl )
	virtual/libiconv"
DEPEND="${RDEPEND}
	static? ( ${LIB_DEPEND} )"
BDEPEND="
	virtual/pkgconfig
	nls? ( sys-devel/gettext )
"

DOCS=( AUTHORS ChangeLog NEWS README THANKS TODO )

src_prepare() {
	sed -i \
		-e "s:@SHELL@:${EPREFIX}/bin/sh:g" \
		-e "s:@grep@:${EPREFIX}/bin/grep:" \
		src/egrep.sh || die #523898

	default
}

src_configure() {
	use static && append-ldflags -static
	# don't link against libsigsegv even when available
	export ac_cv_libsigsegv=no
	# Always use pkg-config to get lib info for pcre.
	export ac_cv_search_pcre_compile=$(
		usex pcre "$($(tc-getPKG_CONFIG) --libs $(usex static --static '') libpcre)" ''
	)
	local myconf
	if [[ "${CHOST}" =~ "muslx32" ]] ; then
		myconf=( --with-included-regex )
	fi
	local myeconfargs=(
		--bindir="${EPREFIX}"/bin
		$(use_enable nls)
		$(use_enable pcre perl-regexp)
		${myconf[@]}
	)
	econf "${myeconfargs[@]}"
}