sys-libs/ncurses: Fix leaking of cross toolchain into native build

If you had overridden CXX or CPP for a cross build, to use Clang for example,
the native build would have erroneously used these. It didn't seem to break the
build, but it did at least emit some scary warnings.

Signed-off-by: James Le Cuirot <chewi@gentoo.org>

1 files changed, 488 insertions, 0 deletions

diff --git a/sys-libs/ncurses/ncurses-6.3_p20221203-r1.ebuild b/sys-libs/ncurses/ncurses-6.3_p20221203-r1.ebuild
new file mode 100644
index 000000000000..a6358a7b4821
--- /dev/null
+++ b/sys-libs/ncurses/ncurses-6.3_p20221203-r1.ebuild
@@ -0,0 +1,488 @@
+# Copyright 1999-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+VERIFY_SIG_OPENPGP_KEY_PATH="${BROOT}"/usr/share/openpgp-keys/thomasdickey.asc
+inherit flag-o-matic toolchain-funcs multilib-minimal preserve-libs usr-ldscript verify-sig
+
+MY_PV="${PV:0:3}"
+MY_P="${PN}-${MY_PV}"
+DESCRIPTION="Console display library"
+HOMEPAGE="https://www.gnu.org/software/ncurses/ https://invisible-island.net/ncurses/"
+# Keep invisible-mirror.net here as some users reported 403 forbidden with invisible-island.net
+SRC_URI="
+	mirror://gnu/ncurses/${MY_P}.tar.gz
+	https://invisible-island.net/archives/${PN}/${MY_P}.tar.gz
+	https://invisible-mirror.net/archives/${PN}/${MY_P}.tar.gz
+	verify-sig? ( mirror://gnu/ncurses/${MY_P}.tar.gz.sig )
+"
+
+GENTOO_PATCH_DEV=sam
+GENTOO_PATCH_PV=6.3_p20221203
+GENTOO_PATCH_NAME=${PN}-${GENTOO_PATCH_PV}-patches
+
+# Populated below in a loop. Do not add patches manually here.
+UPSTREAM_PATCHES=()
+
+if [[ ${PV} == *_p* ]] ; then
+	# Sometimes, after releases, there's no megapatch available yet.
+	#
+	# From upstream README at e.g. https://invisible-island.net/archives/ncurses/6.3/:
+	#
+	#	"At times (generally to mark a relatively stable point), I create a rollup
+	#	patch, which consists of all changes from the release through the current date."
+	#
+	# Also, from https://lists.gnu.org/archive/html/bug-ncurses/2019-08/msg00039.html,
+	# the patches are considered to be acceptable to use after some testing. They
+	# are both for development but also bug fixes.
+	#
+	# This array should contain a list of all the snapshots since the last
+	# release if there's no megapatch available yet.
+	PATCH_DATES=(
+		20211026
+		20211030
+		20211106
+		20211113
+		20211115
+		20211120
+		20211127
+		20211204
+		20211211
+		20211219
+		20211225
+		20220101
+		20220115
+		20220122
+		20220129
+		20220205
+		20220212
+		20220219
+		20220226
+		20220305
+		20220312
+		20220319
+		20220326
+		20220402
+		20220409
+		20220416
+		20220423
+		20220430
+		20220501
+		20220507
+		20220514
+		20220521
+		20220529
+		20220604
+		20220612
+		20220618
+		20220625
+		20220703
+		20220709
+		20220716
+		20220724
+		20220729
+		20220806
+		20220813
+		20220820
+		20220827
+		20220903
+		20220910
+		20220917
+		20220924
+		20221001
+		20221008
+		20221015
+		20221023
+		20221029
+		20221105
+		20221112
+		20221119
+		20221126
+
+		# Latest patch is just _pN = $(ver_cut 4)
+		$(ver_cut 4)
+	)
+
+	if [[ -z ${PATCH_DATES[@]} ]] ; then
+		SRC_URI+=" https://invisible-island.net/archives/${PN}/${PV/_p*}/${P/_p/-}.patch.sh.gz"
+		SRC_URI+=" verify-sig? ( https://invisible-island.net/archives/${PN}/${PV/_p*}/${P/_p/-}.patch.sh.gz.asc"
+
+		# If we have a rollup patch, use that instead of the individual ones.
+		UPSTREAM_PATCHES+=( "${WORKDIR}"/${P/_p/-}-patch.sh )
+	else
+		patch_url=
+		my_patch_index=
+
+		# We keep a bunch of mirrors here as we've had reports of invisible*.net
+		# being 403 forbidden for some users.
+		urls=(
+			"https://invisible-island.net/archives/${PN}/${PV/_p*}/${MY_P}-%s"
+			"https://invisible-mirror.net/archives/${PN}/${PV/_p*}/${MY_P}-%s"
+			"https://dev.gentoo.org/~${GENTOO_PATCH_DEV}/distfiles/${CATEGORY}/${PN}/${MY_P}-%s"
+		)
+
+		for ((my_patch_index=0; my_patch_index < "${#PATCH_DATES[@]}"; my_patch_index++)); do
+			for url in "${urls[@]}" ; do
+				patch_url="$(printf ${urls} ${PATCH_DATES[${my_patch_index}]}.patch.gz)"
+				SRC_URI+=" ${patch_url}"
+				SRC_URI+=" verify-sig? ( ${patch_url}.asc )"
+			done
+
+			UPSTREAM_PATCHES+=( "${WORKDIR}"/${MY_P}-${PATCH_DATES[${my_patch_index}]}.patch )
+		done
+
+		unset patch_url
+		unset my_patch_index
+		unset urls
+	fi
+
+	SRC_URI+=" https://dev.gentoo.org/~${GENTOO_PATCH_DEV}/distfiles/${CATEGORY}/${PN}/${GENTOO_PATCH_NAME}.tar.xz"
+fi
+
+LICENSE="MIT"
+# The subslot reflects the SONAME.
+SLOT="0/6"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~loong ~m68k ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86 ~x64-cygwin ~amd64-linux ~x86-linux ~ppc-macos ~x64-macos ~sparc-solaris ~sparc64-solaris ~x64-solaris ~x86-solaris"
+IUSE="ada +cxx debug doc gpm minimal profile split-usr +stack-realign static-libs test tinfo trace"
+RESTRICT="!test? ( test )"
+
+DEPEND="gpm? ( sys-libs/gpm[${MULTILIB_USEDEP}] )"
+# Block the older ncurses that installed all files w/SLOT=5, bug #557472
+RDEPEND="${DEPEND}
+	!<=sys-libs/ncurses-5.9-r4:5
+	!<sys-libs/slang-2.3.2_pre23
+	!<x11-terms/rxvt-unicode-9.06-r3
+	!<x11-terms/st-0.6-r1"
+BDEPEND="verify-sig? ( sec-keys/openpgp-keys-thomasdickey )"
+
+S="${WORKDIR}/${MY_P}"
+
+PATCHES=(
+	"${UPSTREAM_PATCHES[@]}"
+
+	# When rebasing Gentoo's patchset, please use git from a clean
+	# src_prepare with upstream patches already applied. git am --reject
+	# the existing patchset and rebase as required. This makes it easier
+	# to manage future rebasing & adding new patches.
+	#
+	# For the same reasons, please include the original configure.in changes,
+	# NOT just the generated results!
+	"${WORKDIR}"/${GENTOO_PATCH_NAME}
+)
+
+src_unpack() {
+	# Avoid trying to verify our own patchset tarball, there's no point
+	if use verify-sig ; then
+		local file
+		for file in ${A} ; do
+			if [[ ${file} == ${MY_P}.tar.gz ]] ; then
+				verify-sig_verify_detached "${DISTDIR}"/${file} "${DISTDIR}"/${file}.sig
+			else
+				[[ ${file} == @(*${GENTOO_PATCH_NAME}.tar.xz|*.asc|*.sig) ]] && continue
+
+				verify-sig_verify_detached "${DISTDIR}"/${file} "${DISTDIR}"/${file}.asc
+			fi
+		done
+	fi
+
+	default
+}
+
+src_configure() {
+	# bug #115036
+	unset TERMINFO
+
+	tc-export_build_env BUILD_{CC,CXX,CPP}
+
+	# bug #214642
+	BUILD_CPPFLAGS+=" -D_GNU_SOURCE"
+
+	# Build the various variants of ncurses -- narrow, wide, and threaded. #510440
+	# Order matters here -- we want unicode/thread versions to come last so that the
+	# binaries in /usr/bin support both wide and narrow.
+	# The naming is also important as we use these directly with filenames and when
+	# checking configure flags.
+	NCURSES_TARGETS=(
+		ncurses
+		ncursesw
+		ncursest
+		ncursestw
+	)
+
+	# When installing ncurses, we have to use a compatible version of tic.
+	# This comes up when cross-compiling, doing multilib builds, upgrading,
+	# or installing for the first time.  Build a local copy of tic whenever
+	# the host version isn't available. bug #249363, bug #557598
+	if ! has_version -b "~sys-libs/${P}:0" ; then
+		local lbuildflags="-static"
+
+		# some toolchains don't quite support static linking
+		local dbuildflags="-Wl,-rpath,${WORKDIR}/lib"
+		case ${CHOST} in
+			*-darwin*)  dbuildflags=     ;;
+			*-solaris*) dbuildflags="-Wl,-R,${WORKDIR}/lib" ;;
+		esac
+		echo "int main() {}" | \
+			$(tc-getCC) -o x -x c - ${lbuildflags} -pipe >& /dev/null \
+			|| lbuildflags="${dbuildflags}"
+
+		# We can't re-use the multilib BUILD_DIR because we run outside of it.
+		BUILD_DIR="${WORKDIR}" \
+		CC=${BUILD_CC} \
+		CXX=${BUILD_CXX} \
+		CPP=${BUILD_CPP} \
+		CHOST=${CBUILD} \
+		CFLAGS=${BUILD_CFLAGS} \
+		CXXFLAGS=${BUILD_CXXFLAGS} \
+		CPPFLAGS=${BUILD_CPPFLAGS} \
+		LDFLAGS="${BUILD_LDFLAGS} ${lbuildflags}" \
+		do_configure cross --without-shared --with-normal --with-progs
+	fi
+	multilib-minimal_src_configure
+}
+
+multilib_src_configure() {
+	if [[ ${ABI} == x86 ]] ; then
+		# For compatibility with older binaries at slight performance cost.
+		# bug #616402
+		use stack-realign && append-flags -mstackrealign
+	fi
+
+	local t
+	for t in "${NCURSES_TARGETS[@]}" ; do
+		do_configure "${t}"
+	done
+}
+
+do_configure() {
+	local target=$1
+	shift
+
+	mkdir "${BUILD_DIR}/${target}" || die
+	cd "${BUILD_DIR}/${target}" || die
+
+	# https://lists.gnu.org/archive/html/bug-ncurses/2022-09/msg00024.html
+	export EGREP="grep -E"
+	export FGREP="grep -F"
+
+	local conf=(
+		# We need the basic terminfo files in /etc, bug #37026.  We will
+		# add '--with-terminfo-dirs' and then populate /etc/terminfo in
+		# src_install() ...
+		--with-terminfo-dirs="${EPREFIX}/etc/terminfo:${EPREFIX}/usr/share/terminfo"
+
+		# Enable installation of .pc files.
+		--enable-pc-files
+		# This path is used to control where the .pc files are installed.
+		--with-pkg-config-libdir="${EPREFIX}/usr/$(get_libdir)/pkgconfig"
+
+		# Now the rest of the various standard flags.
+		--with-shared
+		# (Originally disabled until bug #245417 is sorted out, but now
+		# just keeping it off for good, given nobody needed it until now
+		# (2022) and we're trying to phase out bdb.)
+		--without-hashed-db
+		$(use_with ada)
+		$(use_with cxx)
+		$(use_with cxx cxx-binding)
+		--with-cxx-shared
+		$(use_with debug)
+		$(use_with profile)
+		# The configure script uses ldd to parse the linked output which
+		# is flaky for cross-compiling/multilib/ldd versions/etc...
+		$(use_with gpm gpm libgpm.so.1)
+		# Required for building  on mingw-w64, and possibly other windows
+		# platforms, bug #639670
+		$(use_enable kernel_Winnt term-driver)
+		--disable-termcap
+		--enable-symlinks
+		--with-rcs-ids
+		--with-manpage-format=normal
+		--enable-const
+		--enable-colorfgbg
+		--enable-hard-tabs
+		--enable-echo
+		$(use_enable !ada warnings)
+		$(use_with debug assertions)
+		$(use_enable !debug leaks)
+		$(use_with debug expanded)
+		$(use_with !debug macros)
+		$(multilib_native_with progs)
+		$(use_with test tests)
+		$(use_with trace)
+		$(use_with tinfo termlib)
+		--disable-stripping
+		--disable-pkg-ldflags
+	)
+
+	if [[ ${target} == ncurses*w ]] ; then
+		conf+=( --enable-widec )
+	else
+		conf+=( --disable-widec )
+	fi
+	if [[ ${target} == ncursest* ]] ; then
+		conf+=( --with-{pthread,reentrant} )
+	else
+		conf+=( --without-{pthread,reentrant} )
+	fi
+
+	# Make sure each variant goes in a unique location.
+	if [[ ${target} == "ncurses" ]] ; then
+		# "ncurses" variant goes into "${EPREFIX}"/usr/include
+		# It is needed on Prefix because the configure script appends
+		# "ncurses" to "${prefix}/include" if "${prefix}" is not /usr.
+		conf+=( --enable-overwrite )
+	else
+		conf+=( --includedir="${EPREFIX}"/usr/include/${target} )
+	fi
+	# See comments in src_configure.
+	if [[ ${target} != "cross" ]] ; then
+		local cross_path="${WORKDIR}/cross"
+		[[ -d ${cross_path} ]] && export TIC_PATH="${cross_path}/progs/tic"
+	fi
+
+	ECONF_SOURCE="${S}" econf "${conf[@]}" "$@"
+}
+
+src_compile() {
+	# See comments in src_configure.
+	if ! has_version -b "~sys-libs/${P}:0" ; then
+		# We could possibly merge these two branches but opting to be
+		# conservative when merging some of the Prefix changes.
+
+		if [[ ${CHOST} == *-cygwin* ]] && ! multilib_is_native_abi ; then
+			# We make 'tic$(x)' here, for Cygwin having x=".exe".
+			BUILD_DIR="${WORKDIR}" \
+				 do_compile cross -C progs all PROGS='tic$(x)'
+		else
+			BUILD_DIR="${WORKDIR}" \
+				 do_compile cross -C progs tic
+		fi
+	fi
+
+	multilib-minimal_src_compile
+}
+
+multilib_src_compile() {
+	local t
+	for t in "${NCURSES_TARGETS[@]}" ; do
+		do_compile "${t}"
+	done
+}
+
+do_compile() {
+	local target=$1
+	shift
+
+	cd "${BUILD_DIR}/${target}" || die
+
+	# A little hack to fix parallel builds ... they break when
+	# generating sources so if we generate the sources first (in
+	# non-parallel), we can then build the rest of the package
+	# in parallel.  This is not really a perf hit since the source
+	# generation is quite small.
+	emake -j1 sources
+
+	# For some reason, sources depends on pc-files which depends on
+	# compiled libraries which depends on sources which ...
+	# Manually delete the pc-files file so the install step will
+	# create the .pc files we want.
+	rm -f misc/pc-files || die
+	emake "$@"
+}
+
+multilib_src_install() {
+	local target
+	for target in "${NCURSES_TARGETS[@]}" ; do
+		emake -C "${BUILD_DIR}/${target}" DESTDIR="${D}" install
+	done
+
+	# Move main libraries into /.
+	if multilib_is_native_abi ; then
+		gen_usr_ldscript -a \
+			"${NCURSES_TARGETS[@]}" \
+			$(usex tinfo 'tinfow tinfo' '')
+	fi
+
+	# Don't delete '*.dll.a', needed for linking, bug #631468
+	if ! use static-libs; then
+		find "${ED}"/usr/ -name '*.a' ! -name '*.dll.a' -delete || die
+	fi
+
+	# Build fails to create this ...
+	# -FIXME-
+	# Ugly hackaround for riscv having two parts libdir (bug #689240)
+	# Replace this hack with an official solution once we have one...
+	# -FIXME-
+	dosym $(sed 's@[^/]\+@..@g' <<< $(get_libdir))/share/terminfo \
+		/usr/$(get_libdir)/terminfo
+
+	# Remove obsolete libcurses symlink that is created by the build
+	# system. Technically, this could be also achieved
+	# via --disable-overwrite but it also moves headers implicitly,
+	# and we do not want to do this yet.
+	# bug #836696
+	rm "${ED}"/usr/$(get_libdir)/libcurses* || die
+}
+
+multilib_src_install_all() {
+	local terms=(
+		# Dumb/simple values that show up when using the in-kernel VT.
+		ansi console dumb linux
+		vt{52,100,102,200,220}
+		# [u]rxvt users used to be pretty common.  Probably should drop this
+		# since upstream is dead and people are moving away from it.
+		rxvt{,-unicode}{,-256color}
+		# xterm users are common, as is terminals re-using/spoofing it.
+		xterm xterm-{,256}color
+		# screen is common (and reused by tmux).
+		screen{,-256color}
+		screen.xterm-256color
+	)
+	if use split-usr ; then
+		local x
+		# We need the basic terminfo files in /etc for embedded/recovery, bug #37026
+		einfo "Installing basic terminfo files in /etc..."
+		for x in "${terms[@]}"; do
+			local termfile=$(find "${ED}"/usr/share/terminfo/ -name "${x}" 2>/dev/null)
+			local basedir=$(basename "$(dirname "${termfile}")")
+
+			if [[ -n ${termfile} ]] ; then
+				dodir "/etc/terminfo/${basedir}"
+				mv "${termfile}" "${ED}/etc/terminfo/${basedir}/" || die
+				dosym "../../../../etc/terminfo/${basedir}/${x}" \
+					"/usr/share/terminfo/${basedir}/${x}"
+			fi
+		done
+
+		echo "CONFIG_PROTECT_MASK=\"/etc/terminfo\"" | newenvd - 50ncurses
+
+		use minimal && rm -r "${ED}"/usr/share/terminfo*
+		# Because ncurses5-config --terminfo returns the directory we keep it
+		# bug #245374
+		keepdir /usr/share/terminfo
+	elif use minimal ; then
+		# Keep only the basic terminfo files
+		find "${ED}"/usr/share/terminfo/ \
+			-type f ${terms[*]/#/! -name } -delete , \
+			-type d -empty -delete || die
+	fi
+
+	cd "${S}" || die
+	dodoc ANNOUNCE MANIFEST NEWS README* TO-DO doc/*.doc
+	if use doc ; then
+		docinto html
+		dodoc -r doc/html/
+	fi
+}
+
+pkg_preinst() {
+	preserve_old_lib /$(get_libdir)/libncurses.so.5
+	preserve_old_lib /$(get_libdir)/libncursesw.so.5
+}
+
+pkg_postinst() {
+	preserve_old_lib_notify /$(get_libdir)/libncurses.so.5
+	preserve_old_lib_notify /$(get_libdir)/libncursesw.so.5
+}