sys-libs/libxcrypt: fix prefix install

Bug: https://bugs.gentoo.org/802222
Closes: https://bugs.gentoo.org/843209
Signed-off-by: Sam James <sam@gentoo.org>

1 files changed, 298 insertions, 0 deletions

diff --git a/sys-libs/libxcrypt/libxcrypt-4.4.28-r1.ebuild b/sys-libs/libxcrypt/libxcrypt-4.4.28-r1.ebuild
new file mode 100644
index 000000000000..dbab827b3def
--- /dev/null
+++ b/sys-libs/libxcrypt/libxcrypt-4.4.28-r1.ebuild
@@ -0,0 +1,298 @@
+# Copyright 2004-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+PYTHON_COMPAT=( python3_{8..10} )
+# NEED_BOOTSTRAP is for developers to quickly generate a tarball
+# for publishing to the tree.
+NEED_BOOTSTRAP="no"
+inherit eapi8-dosym multibuild multilib python-any-r1 toolchain-funcs multilib-minimal
+
+DESCRIPTION="Extended crypt library for descrypt, md5crypt, bcrypt, and others"
+HOMEPAGE="https://github.com/besser82/libxcrypt"
+if [[ ${NEED_BOOTSTRAP} == "yes" ]] ; then
+	inherit autotools
+	SRC_URI="https://github.com/besser82/${PN}/archive/v${PV}.tar.gz -> ${P}.tar.gz"
+else
+	SRC_URI="https://dev.gentoo.org/~sam/distfiles/${CATEGORY}/${PN}/${P}-autotools.tar.xz"
+fi
+
+LICENSE="LGPL-2.1+ public-domain BSD BSD-2"
+SLOT="0/1"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~loong ~m68k ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86"
+IUSE="+compat split-usr static-libs system test"
+REQUIRED_USE="split-usr? ( system )"
+RESTRICT="!test? ( test )"
+
+export CTARGET=${CTARGET:-${CHOST}}
+if [[ ${CTARGET} == ${CHOST} ]] ; then
+	if [[ ${CATEGORY/cross-} != ${CATEGORY} ]] ; then
+		export CTARGET=${CATEGORY/cross-}
+	fi
+fi
+
+is_cross() {
+	local enabled_abis=( $(multilib_get_enabled_abis) )
+	[[ "${#enabled_abis[@]}" -le 1 ]] && [[ ${CHOST} != ${CTARGET} ]]
+}
+
+DEPEND="system? (
+		elibc_glibc? (
+			${CATEGORY}/glibc[-crypt(+)]
+			!${CATEGORY}/glibc[crypt(+)]
+		)
+		!${CATEGORY}/musl
+	)
+"
+RDEPEND="${DEPEND}"
+BDEPEND="dev-lang/perl
+	test? ( $(python_gen_any_dep 'dev-python/passlib[${PYTHON_USEDEP}]') )"
+
+python_check_deps() {
+	has_version -b "dev-python/passlib[${PYTHON_USEDEP}]"
+}
+
+pkg_pretend() {
+	if has "distcc" ${FEATURES} ; then
+		ewarn "Please verify all distcc nodes are using the same versions of GCC (>= 10) and Binutils!"
+		ewarn "Older/mismatched versions of GCC may lead to a misbehaving library: bug #823179."
+
+		if [[ ${BUILD_TYPE} != "binary" ]] && tc-is-gcc && [[ $(gcc-major-version) -lt 10 ]] ; then
+			die "libxcrypt is known to fail to build or be broken at runtime with < GCC 10 (bug #823179)!"
+		fi
+	fi
+}
+
+pkg_setup() {
+	MULTIBUILD_VARIANTS=(
+		$(usex compat 'xcrypt_compat' '')
+		xcrypt_nocompat
+	)
+
+	use test && python-any-r1_pkg_setup
+}
+
+src_prepare() {
+	default
+
+	# WARNING: Please read on bumping or applying patches!
+	#
+	# There are two circular dependencies to be aware of:
+	# 1)
+	#	if we're bootstrapping configure and makefiles:
+	#		libxcrypt -> automake -> perl -> libxcrypt
+	#
+	#   mitigation:
+	#		toolchain@ manually runs `make dist` after running autoconf + `./configure`
+	#		and the ebuild uses that.
+	#		(Don't include the pre-generated Perl artefacts.)
+	#
+	#	solution for future:
+	#		Upstream are working on producing `make dist` tarballs.
+	#		https://github.com/besser82/libxcrypt/issues/134#issuecomment-871833573
+	#
+	# 2)
+	#	configure *unconditionally* needs Perl at build time to generate
+	#	a list of enabled algorithms based on the set passed to `configure`:
+	#		libxcrypt -> perl -> libxcrypt
+	#
+	#	mitigation:
+	#		None at the moment.
+	#
+	#	solution for future:
+	#		Not possible right now. Upstream intend on depending on Perl for further
+	#		configuration options.
+	#		https://github.com/besser82/libxcrypt/issues/134#issuecomment-871833573
+	#
+	# Therefore, on changes (inc. bumps):
+	#	* You must check whether upstream have started providing tarballs with bootstrapped
+	#	  auto{conf,make};
+	#
+	#	* diff the build system changes!
+	#
+	if [[ ${NEED_BOOTSTRAP} == "yes" ]] ; then
+		# Facilitate our split variant build for compat + non-compat
+		eapply "${FILESDIR}"/${PN}-4.4.19-multibuild.patch
+		eautoreconf
+	fi
+}
+
+src_configure() {
+	# Avoid possible "illegal instruction" errors with gold
+	# bug #821496
+	tc-ld-disable-gold
+
+	multibuild_foreach_variant multilib-minimal_src_configure
+}
+
+get_xcprefix() {
+	if is_cross; then
+		echo "${EPREFIX}/usr/${CTARGET}"
+	else
+		echo "${EPREFIX}"
+	fi
+}
+
+get_xclibdir() {
+	printf -- "%s/%s/%s/%s\n" \
+		"$(get_xcprefix)" \
+		"$(usex split-usr '' '/usr')" \
+		"$(get_libdir)" \
+		"$(usex system '' 'xcrypt')"
+}
+
+get_xcincludedir() {
+	printf -- "%s/usr/include/%s\n" \
+		"$(get_xcprefix)" \
+		"$(usex system '' 'xcrypt')"
+}
+
+get_xcmandir() {
+	printf -- "%s/usr/share/man\n" \
+		"$(get_xcprefix)"
+}
+
+get_xcpkgconfigdir() {
+	printf -- "%s/usr/%s/pkgconfig\n" \
+		"$(get_xcprefix)" \
+		"$(get_libdir)"
+}
+
+multilib_src_configure() {
+	local -a myconf=(
+		--disable-werror
+		--libdir=$(get_xclibdir)
+		--with-pkgconfigdir=$(get_xcpkgconfigdir)
+		--includedir=$(get_xcincludedir)
+		--mandir="$(get_xcmandir)"
+	)
+
+	case "${MULTIBUILD_ID}" in
+		xcrypt_compat-*)
+			myconf+=(
+				--disable-static
+				--disable-xcrypt-compat-files
+				--enable-obsolete-api=yes
+			)
+			;;
+		xcrypt_nocompat-*)
+			myconf+=(
+				--enable-obsolete-api=no
+				$(use_enable static-libs static)
+			)
+		;;
+		*) die "Unexpected MULTIBUILD_ID: ${MULTIBUILD_ID}";;
+	esac
+
+	ECONF_SOURCE="${S}" econf "${myconf[@]}"
+}
+
+src_compile() {
+	multibuild_foreach_variant multilib-minimal_src_compile
+}
+
+multilib_src_test() {
+	emake check
+}
+
+src_test() {
+	multibuild_foreach_variant multilib-minimal_src_test
+}
+
+src_install() {
+	multibuild_foreach_variant multilib-minimal_src_install
+
+	(
+		shopt -s failglob || die "failglob failed"
+
+		# Make sure our man pages do not collide with glibc or man-pages.
+		for manpage in "${D}$(get_xcmandir)"/man3/crypt{,_r}.?*; do
+			mv -n "${manpage}" "$(dirname "${manpage}")/xcrypt_$(basename "${manpage}")" \
+				|| die "mv failed"
+		done
+	) || die "failglob error"
+
+	# Remove useless stuff from installation
+	find "${ED}"/usr/share/doc/${PF} -type l -delete || die
+	find "${ED}" -name '*.la' -delete || die
+
+	# workaround broken upstream cross-* --docdir by installing files in proper locations
+	if is_cross; then
+		insinto "$(get_xcprefix)"/usr/share
+		doins -r "${ED}"/usr/share/doc
+		rm -r "${ED}"/usr/share/doc || die
+	fi
+}
+
+multilib_src_install() {
+	emake DESTDIR="${D}" install
+
+	# Don't install the libcrypt.so symlink for the "compat" version
+	case "${MULTIBUILD_ID}" in
+		xcrypt_compat-*)
+			rm "${D}"$(get_xclibdir)/libcrypt$(get_libname) \
+				|| die "failed to remove extra compat libraries"
+		;;
+		xcrypt_nocompat-*)
+			if use split-usr; then
+				(
+					if use static-libs; then
+						# .a files are installed to /$(get_libdir) by default
+						# Move static libraries to /usr prefix or portage will abort
+						shopt -s nullglob || die "failglob failed"
+						static_libs=( "${D}"/$(get_xclibdir)/*.a )
+
+						if [[ -n ${static_libs[*]} ]]; then
+							dodir "/usr/$(get_xclibdir)"
+							mv "${static_libs[@]}" "${ED}/usr/$(get_xclibdir)" \
+								|| die "Moving static libs failed"
+						fi
+					fi
+
+					if use system; then
+						# Move versionless .so symlinks from /$(get_libdir) to /usr/$(get_libdir)
+						# to allow linker to correctly find shared libraries.
+						shopt -s failglob || die "failglob failed"
+
+						for lib_file in "${D}"$(get_xclibdir)/*$(get_libname); do
+							lib_file_basename="$(basename "${lib_file}")"
+							lib_file_target="$(basename "$(readlink -f "${lib_file}")")"
+
+							# We already know we're in split-usr (checked above)
+							# See bug #843209 (also worth keeping in mind bug #802222 too)
+							local libdir_no_prefix=$(get_xclibdir)
+							libdir_no_prefix=${libdir_no_prefix#${EPREFIX}}
+							libdir_no_prefix=${libdir_no_prefix%/usr}
+							dosym8 -r "/$(get_libdir)/${lib_file_target}" "/usr/${libdir_no_prefix}/${lib_file_basename}"
+						done
+
+						rm "${D}"$(get_xclibdir)/*$(get_libname) || die "Removing symlinks in incorrect location failed"
+					fi
+				)
+			fi
+		;;
+		*) die "Unexpected MULTIBUILD_ID: ${MULTIBUILD_ID}";;
+	esac
+}
+
+pkg_preinst() {
+	# Verify we're not in a bad case like bug #843209 with broken symlinks.
+	# This can be dropped when, if ever, the split-usr && system && compat case
+	# is cleaned up in *_src_install.
+	local broken_symlinks=()
+	mapfile -d '' broken_symlinks < <(
+		find "${ED}" -type l ! -exec test -e {} \; -print0 2>/dev/null
+	)
+
+	[[ -z "${broken_symlinks[@]}" ]] && return
+
+	eerror "Broken symlinks found before merging!"
+	for symlink in "${broken_symlinks[@]}" ; do
+		bad_dest="$(readlink -f ${symlink})"
+		eerror "\t${symlink} is broken!"
+		eerror "\treadlink -f ${symlink}:"
+		eerror "\t\t${bad_dest}"
+		die "Broken symlinks found! Aborting to avoid damaging system. Please report a bug."
+	done
+}