Initial commit

hooks/ebuild_install_post/prune_libtool_files.bash

@@ -0,0 +1,138 @@
+#!/bin/bash
+
+source "${PALUDIS_EBUILD_DIR}/echo_functions.bash"
+
+prune_libtool_files() {
+	local removing_all removing_modules opt
+	for opt; do
+		case "${opt}" in
+			--all)
+				removing_all=1
+				removing_modules=1
+				;;
+			--modules)
+				removing_modules=1
+				;;
+			*)
+				die "Invalid argument to ${FUNCNAME}(): ${opt}"
+		esac
+	done
+
+	local f
+	local queue=()
+	while IFS= read -r -d '' f; do # for all .la files
+		local archivefile=${f/%.la/.a}
+
+		# The following check is done by libtool itself.
+		# It helps us avoid removing random files which match '*.la',
+		# see bug #468380.
+		if ! sed -n -e '/^# Generated by .*libtool/q0;4q1' "${f}"; then
+			continue
+		fi
+
+		[[ ${f} != ${archivefile} ]] || die 'regex sanity check failed'
+		local reason= pkgconfig_scanned=
+		local snotlink=$(sed -n -e 's:^shouldnotlink=::p' "${f}")
+
+		if [[ ${snotlink} == yes ]]; then
+
+			# Remove static libs we're not supposed to link against.
+			if [[ -f ${archivefile} ]]; then
+				einfo "Removing unnecessary ${archivefile#${IMAGE%/}} (static plugin)"
+				queue+=( "${archivefile}" )
+			fi
+
+			# The .la file may be used by a module loader, so avoid removing it
+			# unless explicitly requested.
+			if [[ ${removing_modules} ]]; then
+				reason='module'
+			fi
+
+		else
+
+			# Remove .la files when:
+			# - user explicitly wants us to remove all .la files,
+			# - respective static archive doesn't exist,
+			# - they are covered by a .pc file already,
+			# - they don't provide any new information (no libs & no flags).
+
+			if [[ ${removing_all} ]]; then
+				reason='requested'
+			elif [[ ! -f ${archivefile} ]]; then
+				reason='no static archive'
+			elif [[ ! $(sed -nre \
+					"s/^(dependency_libs|inherited_linker_flags)='(.*)'$/\2/p" \
+					"${f}") ]]; then
+				reason='no libs & flags'
+			else
+				if [[ ! ${pkgconfig_scanned} ]]; then
+					# Create a list of all .pc-covered libs.
+					local pc_libs=()
+					if [[ ! ${removing_all} ]]; then
+						local pc
+						local tf=${T}/prune-lt-files.pc
+						local pkgconf=${PKG_CONFIG}
+
+						while IFS= read -r -d '' pc; do # for all .pc files
+							local arg libs
+
+							# Use pkg-config if available (and works),
+							# fallback to sed.
+							if ${pkgconf} --exists "${pc}" &>/dev/null; then
+								sed -e '/^Requires:/d' "${pc}" > "${tf}"
+								libs=$(${pkgconf} --libs "${tf}")
+							else
+								libs=$(sed -ne 's/^Libs://p' "${pc}")
+							fi
+
+							for arg in ${libs}; do
+								if [[ ${arg} == -l* ]]; then
+									if [[ ${arg} == '*$*' ]]; then
+										ewarn "${FUNCNAME}: variable substitution likely failed in ${pc}"
+										ewarn "(arg: ${arg})"
+										ewarn "Most likely, you need to add virtual/pkgconfig to DEPEND."
+									fi
+
+									pc_libs+=( lib${arg#-l}.la )
+								fi
+							done
+						done < <(find "${IMAGE}" -type f -name '*.pc' -print0)
+
+						rm -f "${tf}"
+					fi
+
+					pkgconfig_scanned=1
+				fi # pkgconfig_scanned
+
+				has "${f##*/}" "${pc_libs[@]}" && reason='covered by .pc'
+			fi # removal due to .pc
+
+		fi # shouldnotlink==no
+
+		if [[ ${reason} ]]; then
+			einfo "Removing unnecessary ${f#${IMAGE%/}} (${reason})"
+			queue+=( "${f}" )
+		fi
+	done < <(find "${IMAGE}" -xtype f -name '*.la' -print0)
+
+	if [[ ${queue[@]} ]]; then
+		rm -f "${queue[@]}"
+	fi
+}
+
+if [[ "${CATEGORY}/${PN}" != "sys-devel/gcc" &&
+		"${CATEGORY}/${PN}" != "dev-libs/openssl" &&
+		"${CATEGORY}/${PN}" != "dev-libs/libressl" &&
+		"${CATEGORY}/${PN}" != "sys-libs/db" &&
+		"${CATEGORY}/${PN}" != "media-libs/giflib" &&
+		"${CATEGORY}/${PN}" != "dev-libs/gmp" &&
+		"${CATEGORY}/${PN}" != "dev-lang/mono" &&
+		"${CATEGORY}/${PN}" != "media-libs/libpng" &&
+		"${CATEGORY}/${PN}" != "sys-devel/binutils" &&
+		"${CATEGORY}/${PN}" != "dev-lang/llvm" &&
+		"${CATEGORY}/${PN}" != "dev-lang/clang" &&
+		"${CATEGORY}/${PN}" != "sys-libs/libstdc++"
+	]] ; then
+	prune_libtool_files --all
+fi
+