libmakepkg: move helper functions into tidy/strip

Signed-off-by: Allan McRae <allan@archlinux.org>

1 files changed, 50 insertions, 0 deletions

diff --git a/scripts/libmakepkg/tidy/strip.sh.in b/scripts/libmakepkg/tidy/strip.sh.in
index 15d92bee..12a7eee3 100644
--- a/scripts/libmakepkg/tidy/strip.sh.in
+++ b/scripts/libmakepkg/tidy/strip.sh.in
@@ -30,6 +30,56 @@ source "$LIBRARY/util/option.sh"
 packaging_options+=('strip' 'debug')
 tidy_modify+=('tidy_strip')
 
+
+build_id() {
+	LANG=C readelf -n $1 | sed -n '/Build ID/ { s/.*: //p; q; }'
+}
+
+strip_file() {
+	local binary=$1; shift
+
+	if check_option "debug" "y"; then
+		local bid=$(build_id "$binary")
+
+		# has this file already been stripped
+		if [[ -n "$bid" ]]; then
+			if [[ -f "$dbgdir/.build-id/${bid:0:2}/${bid:2}.debug" ]]; then
+				return
+			fi
+		elif [[ -f "$dbgdir/$binary.debug" ]]; then
+			return
+		fi
+
+		mkdir -p "$dbgdir/${binary%/*}"
+		objcopy --only-keep-debug "$binary" "$dbgdir/$binary.debug"
+		objcopy --add-gnu-debuglink="$dbgdir/${binary#/}.debug" "$binary"
+
+		# create any needed hardlinks
+		while read -rd '' file ; do
+			if [[ "${binary}" -ef "${file}" && ! -f "$dbgdir/${file}.debug" ]]; then
+				mkdir -p "$dbgdir/${file%/*}"
+				ln "$dbgdir/${binary}.debug" "$dbgdir/${file}.debug"
+			fi
+		done < <(find . -type f -perm -u+w -print0 2>/dev/null)
+
+		if [[ -n "$bid" ]]; then
+			local target
+			mkdir -p "$dbgdir/.build-id/${bid:0:2}"
+
+			target="../../../../../${binary#./}"
+			target="${target/..\/..\/usr\/lib\/}"
+			target="${target/..\/usr\/}"
+			ln -s "$target" "$dbgdir/.build-id/${bid:0:2}/${bid:2}"
+
+			target="../../${binary#./}.debug"
+			ln -s "$target" "$dbgdir/.build-id/${bid:0:2}/${bid:2}.debug"
+		fi
+	fi
+
+	strip $@ "$binary"
+}
+
+
 tidy_strip() {
 	if check_option "strip" "y"; then
 		msg2 "$(gettext "Stripping unneeded symbols from binaries and libraries...")"