259d521e37
In commit 8b0d59b83a support was added for
storing the source files of binaries in debug packages. Allow the user
to specify where those source files should be stored via makepkg.conf
Signed-off-by: Eli Schwartz <eschwartz@archlinux.org>
Signed-off-by: Allan McRae <allan@archlinux.org>
136 lines
3.9 KiB
Bash
136 lines
3.9 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) 2007-2017 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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source_files() {
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LANG=C readelf "$1" --debug-dump | \
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awk '/DW_AT_name +:/{name=$8}/DW_AT_comp_dir +:/{print $8 "/" name}'
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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/$binary.debug" ]]; then
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return
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fi
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# copy source files to debug directory
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local f t
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while read -r f; do
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t=${f/"$srcdir"/$dbgsrc}
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mkdir -p "${t%/*}"
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cp -- "$f" "$t"
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done < <(source_files "$binary")
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# adjust debug symbols to point at sources
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debugedit -b "${srcdir}" -d /usr/src/debug/ -i "$binary" &> /dev/null
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# copy debug symbols to debug directory
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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 ${STRIP_STATIC+x} ]] && STRIP_STATIC="-S"
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if check_option "debug" "y"; then
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dbgdir="$pkgdirbase/$pkgbase-@DEBUGSUFFIX@/usr/lib/debug"
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dbgsrc="$pkgdirbase/$pkgbase-@DEBUGSUFFIX@${DBGSRCDIR:-/usr/src/debug}"
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mkdir -p "$dbgdir" "$dbgsrc"
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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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