118 lines
3.3 KiB
Bash
118 lines
3.3 KiB
Bash
#!/bin/bash
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#
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# strip.sh - Strip debugging symbols from binary files
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#
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# Copyright (c) 2007-2016 Pacman Development Team <pacman-dev@archlinux.org>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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[[ -n "$LIBMAKEPKG_TIDY_STRIP_SH" ]] && return
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LIBMAKEPKG_TIDY_STRIP_SH=1
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LIBRARY=${LIBRARY:-'@libmakepkgdir@'}
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source "$LIBRARY/util/message.sh"
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source "$LIBRARY/util/option.sh"
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packaging_options+=('strip' 'debug')
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tidy_modify+=('tidy_strip')
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build_id() {
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LANG=C readelf -n $1 | sed -n '/Build ID/ { s/.*: //p; q; }'
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}
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strip_file() {
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local binary=$1; shift
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if check_option "debug" "y"; then
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local bid=$(build_id "$binary")
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# has this file already been stripped
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if [[ -n "$bid" ]]; then
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if [[ -f "$dbgdir/.build-id/${bid:0:2}/${bid:2}.debug" ]]; then
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return
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fi
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elif [[ -f "$dbgdir/$binary.debug" ]]; then
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return
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fi
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mkdir -p "$dbgdir/${binary%/*}"
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objcopy --only-keep-debug "$binary" "$dbgdir/$binary.debug"
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objcopy --add-gnu-debuglink="$dbgdir/${binary#/}.debug" "$binary"
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# create any needed hardlinks
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while read -rd '' file ; do
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if [[ "${binary}" -ef "${file}" && ! -f "$dbgdir/${file}.debug" ]]; then
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mkdir -p "$dbgdir/${file%/*}"
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ln "$dbgdir/${binary}.debug" "$dbgdir/${file}.debug"
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fi
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done < <(find . -type f -perm -u+w -print0 2>/dev/null)
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if [[ -n "$bid" ]]; then
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local target
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mkdir -p "$dbgdir/.build-id/${bid:0:2}"
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target="../../../../../${binary#./}"
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target="${target/..\/..\/usr\/lib\/}"
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target="${target/..\/usr\/}"
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ln -s "$target" "$dbgdir/.build-id/${bid:0:2}/${bid:2}"
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target="../../${binary#./}.debug"
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ln -s "$target" "$dbgdir/.build-id/${bid:0:2}/${bid:2}.debug"
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fi
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fi
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strip $@ "$binary"
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}
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tidy_strip() {
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if check_option "strip" "y"; then
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msg2 "$(gettext "Stripping unneeded symbols from binaries and libraries...")"
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# make sure library stripping variables are defined to prevent excess stripping
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[[ -z ${STRIP_SHARED+x} ]] && STRIP_SHARED="-S"
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[[ -z ${STRIP_STATIC+x} ]] && STRIP_STATIC="-S"
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if check_option "debug" "y"; then
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dbgdir="$pkgdir-@DEBUGSUFFIX@/usr/lib/debug"
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mkdir -p "$dbgdir"
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fi
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local binary strip_flags
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find . -type f -perm -u+w -print0 2>/dev/null | while read -rd '' binary ; do
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case "$(file -bi "$binary")" in
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*application/x-sharedlib*) # Libraries (.so)
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strip_flags="$STRIP_SHARED";;
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*application/x-archive*) # Libraries (.a)
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strip_flags="$STRIP_STATIC";;
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*application/x-object*)
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case "$binary" in
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*.ko) # Kernel module
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strip_flags="$STRIP_SHARED";;
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*)
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continue;;
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esac;;
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*application/x-executable*) # Binaries
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strip_flags="$STRIP_BINARIES";;
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*)
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continue ;;
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esac
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strip_file "$binary" ${strip_flags}
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done
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fi
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}
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