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

EAPI=7

inherit flag-o-matic toolchain-funcs

# Official patchlevel
# See ftp://ftp.cwru.edu/pub/bash/bash-4.3-patches/
PLEVEL="${PV##*_p}"
MY_PV="${PV/_p*}"
MY_PV="${MY_PV/_/-}"
MY_P="${PN}-${MY_PV}"
[[ ${PV} != *_p* ]] && PLEVEL=0
patches() {
	local opt=${1} plevel=${2:-${PLEVEL}} pn=${3:-${PN}} pv=${4:-${MY_PV}}
	[[ ${plevel} -eq 0 ]] && return 1
	eval set -- {1..${plevel}}
	set -- $(printf "${pn}${pv/\.}-%03d " "$@")
	if [[ ${opt} == -s ]] ; then
		echo "${@/#/${DISTDIR}/}"
	else
		local u
		for u in ftp://ftp.cwru.edu/pub/bash mirror://gnu/${pn} ; do
			printf "${u}/${pn}-${pv}-patches/%s " "$@"
		done
	fi
}

# The version of readline this bash normally ships with.
READLINE_VER="6.3"

DESCRIPTION="The standard GNU Bourne again shell"
HOMEPAGE="http://tiswww.case.edu/php/chet/bash/bashtop.html"
SRC_URI="mirror://gnu/bash/${MY_P}.tar.gz $(patches)"
[[ ${PV} == *_rc* ]] && SRC_URI+=" ftp://ftp.cwru.edu/pub/bash/${MY_P}.tar.gz"

LICENSE="GPL-3"
SLOT="${MY_PV}"
KEYWORDS="~alpha amd64 arm arm64 hppa ~ia64 ~m68k ~mips ppc ppc64 ~s390 sparc x86"
IUSE="afs bashlogger examples mem-scramble +net nls plugins +readline"

DEPEND=">=sys-libs/ncurses-5.2-r2:0=
	readline? ( >=sys-libs/readline-${READLINE_VER}:0= )
	nls? ( virtual/libintl )"
RDEPEND="${DEPEND}
	!<sys-apps/portage-2.1.6.7_p1"
# We only need yacc when the .y files get patched (bash42-005)
BDEPEND="virtual/yacc"

PATCHES=(
	"${FILESDIR}"/${PN}-4.3-mapfile-improper-array-name-validation.patch
	"${FILESDIR}"/${PN}-4.3-arrayfunc.patch
	"${FILESDIR}"/${PN}-4.3-protos.patch
	"${FILESDIR}"/${PN}-4.4-popd-offset-overflow.patch # bug #600174
)

S="${WORKDIR}/${MY_P}"

pkg_setup() {
	# bug #7332
	if is-flag -malign-double ; then
		eerror "Detected bad CFLAGS '-malign-double'.  Do not use this"
		eerror "as it breaks LFS (struct stat64) on x86."
		die "remove -malign-double from your CFLAGS mr ricer"
	fi

	if use bashlogger ; then
		ewarn "The logging patch should ONLY be used in restricted (i.e. honeypot) envs."
		ewarn "This will log ALL output you enter into the shell, you have been warned."
	fi
}

src_unpack() {
	unpack ${MY_P}.tar.gz
}

src_prepare() {
	# Include official patches
	[[ ${PLEVEL} -gt 0 ]] && eapply -p0 $(patches -s)

	# Clean out local libs so we know we use system ones w/releases.
	if [[ ${PV} != *_rc* ]] ; then
		rm -rf lib/{readline,termcap}/* || die
		touch lib/{readline,termcap}/Makefile.in || die # for config.status
		sed -ri -e 's:\$[{(](RL|HIST)_LIBSRC[)}]/[[:alpha:]_-]*\.h::g' Makefile.in || die
	fi

	# Avoid regenerating docs after patches, bug #407985
	sed -i -r '/^(HS|RL)USER/s:=.*:=:' doc/Makefile.in || die
	touch -r . doc/* || die

	default
}

src_configure() {
	local myconf=(
		--docdir='$(datarootdir)'/doc/${PF}
		--htmldir='$(docdir)/html'

		# Force linking with system curses ... the bundled termcap lib
		# sucks bad compared to ncurses.  For the most part, ncurses
		# is here because readline needs it.  But bash itself calls
		# ncurses in one or two small places :(.
		--with-curses

		$(use_with afs)
		$(use_enable net net-redirections)
		--disable-profiling
		$(use_enable mem-scramble)
		$(use_with mem-scramble bash-malloc)
		$(use_enable readline)
		$(use_enable readline history)
		$(use_enable readline bang-history)
	)

	# For descriptions of these, see config-top.h
	# bashrc/#26952 bash_logout/#90488 ssh/#24762 mktemp/#574426
	append-cppflags \
		-DDEFAULT_PATH_VALUE=\'\"${EPREFIX}/usr/local/sbin:${EPREFIX}/usr/local/bin:${EPREFIX}/usr/sbin:${EPREFIX}/usr/bin:${EPREFIX}/sbin:${EPREFIX}/bin\"\' \
		-DSTANDARD_UTILS_PATH=\'\"${EPREFIX}/bin:${EPREFIX}/usr/bin:${EPREFIX}/sbin:${EPREFIX}/usr/sbin\"\' \
		-DSYS_BASHRC=\'\"${EPREFIX}/etc/bash/bashrc\"\' \
		-DSYS_BASH_LOGOUT=\'\"${EPREFIX}/etc/bash/bash_logout\"\' \
		-DNON_INTERACTIVE_LOGIN_SHELLS \
		-DSSH_SOURCE_BASHRC \
		-DUSE_MKTEMP -DUSE_MKSTEMP \
		$(use bashlogger && echo -DSYSLOG_HISTORY)

	# Don't even think about building this statically without
	# reading bug #7714 first.  If you still build it statically,
	# don't come crying to us with bugs ;).
	#use static && export LDFLAGS="${LDFLAGS} -static"
	use nls || myconf+=( --disable-nls )

	# Historically, we always used the builtin readline, but since
	# our handling of SONAME upgrades has gotten much more stable
	# in the PM (and the readline ebuild itself preserves the old
	# libs during upgrades), linking against the system copy should
	# be safe.
	# Exact cached version here doesn't really matter as long as it
	# is at least what's in the DEPEND up above.
	export ac_cv_rl_version=${READLINE_VER}

	if [[ ${PV} != *_rc* ]] ; then
		# Use system readline only with released versions.
		myconf+=( --with-installed-readline=. )
	fi

	if use plugins ; then
		append-ldflags -Wl,-rpath,/usr/$(get_libdir)/bash
	else
		# Disable the plugins logic by hand since bash doesn't
		# provide a way of doing it.
		export ac_cv_func_dl{close,open,sym}=no \
			ac_cv_lib_dl_dlopen=no ac_cv_header_dlfcn_h=no

		sed -i \
			-e '/LOCAL_LDFLAGS=/s:-rdynamic::' \
			configure || die
	fi

	# bug #444070
	tc-export AR

	econf "${myconf[@]}"
}

src_compile() {
	emake

	if use plugins ; then
		emake -C examples/loadables all others
	fi
}

src_install() {
	into /
	newbin bash bash-${SLOT}

	newman doc/bash.1 bash-${SLOT}.1
	newman doc/builtins.1 builtins-${SLOT}.1

	insinto /usr/share/info
	newins doc/bashref.info bash-${SLOT}.info
	dosym bash-${SLOT}.info /usr/share/info/bashref-${SLOT}.info

	dodoc README NEWS AUTHORS CHANGES COMPAT Y2K doc/FAQ doc/INTRO
}