glibc/wrap-find-debuginfo.sh
Florian Weimer 83835daada Sync with Fedora f34 branch (glibc-2.33-11)
Fedora commit: 4f55bd2df5c705c99f21e1d35941843212b3e3a1

Related: #1945473
Resolves: #1945472
Resolves: #1915330
2021-05-07 13:55:45 +02:00

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1.3 KiB
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#!/bin/bash
# Wrapper script for find-debuginfo.sh
#
# Usage:
# wrap-find-debuginfo.sh LDSO-PATH SCRIPT-PATH SCRIPT-ARGS...
#
# The wrapper saves the original versions of the file at LDSO-PATH,
# invokes SCRIPT-PATH with SCRIPT-ARGS, and then restores the
# LDSO-PATH file. As a result, LDSO-PATH has unchanged debuginfo even
# after debuginfo extraction.
set -ex
ldso_tmp="$(mktemp)"
cleanup () {
rm -f "$ldso_tmp"
}
trap cleanup 0
ldso_path="$1"
shift
script_path="$1"
shift
# Preserve the original file.
cp "$ldso_path" "$ldso_tmp"
# Run the debuginfo extraction.
"$script_path" "$@"
# Restore the original file.
cp "$ldso_tmp" "$ldso_path"
# Reduce the size of notes. Primarily for annobin.
objcopy --merge-notes "$ldso_path"
# Rewrite the source file paths to match the extracted locations.
# First compute the arguments for invoking debugedit. See
# find-debuginfo.sh.
debug_dest_name="/usr/src/debug"
last_arg=
while true ; do
arg="$1"
shift || break
case "$arg" in
(--unique-debug-src-base)
debug_dest_name="/usr/src/debug/$1"
shift
;;
(-*)
;;
(*)
last_arg="$arg"
;;
esac
done
debug_base_name=${last_arg:-$RPM_BUILD_ROOT}
/usr/lib/rpm/debugedit -b "$debug_base_name" -d "$debug_dest_name" -n \
$ldso_path
# Apply single-file DWARF optimization.
dwz $ldso_path