9a4d616220
We want to provide source files with debug symbol packages to allow easy stepping through the program. This becomes difficult with split packages due to the binaries in many of these sharing source files across packages. There are (at least) two solutions to this problem. #1: ensure common source files are located in the debug package for the package lowest in the dependency chain and add dependencies to the debug packages so all require source files are present, or #2: create one debug package for all split packages in a PKGBUILD. The second is a more robust approach despite potentially creating very large debug packages. This patch creates a single $pkgbase-debug package and adds provides such that installing $pkgname-debug will always work. Signed-off-by: Allan McRae <allan@archlinux.org>
117 lines
3.3 KiB
Bash
117 lines
3.3 KiB
Bash
#!/bin/bash
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#
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# strip.sh - Strip debugging symbols from binary files
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#
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# Copyright (c) 2007-2016 Pacman Development Team <pacman-dev@archlinux.org>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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[[ -n "$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 ${STRIP_STATIC+x} ]] && STRIP_STATIC="-S"
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if check_option "debug" "y"; then
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dbgdir="$pkgdirbase/$pkgbase-@DEBUGSUFFIX@/usr/lib/debug"
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mkdir -p "$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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