freebsd-ports/Mk/Scripts/generate-symbols.sh
Bryan Drewery 34da0bbb9e Add some work-in-progress scripts for splitting symbols out into PREFIX/lib/debug.
This is only missing the bsd.port.mk pieces to hook it up fully.  A blocker
for hooking that up has been sub-packages, even though some implementation
could be made without them.  For now just commit what I have so it is not
forgotten.

Obtained from:	OneFS
Sponsored by:	EMC / Isilon Storage Division
With hat:	portmgr
2015-10-19 17:04:33 +00:00

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#! /bin/sh
# $FreeBSD$
# Maintainer: portmgr@FreeBSD.org
msg() {
echo "====> $@"
}
msg "Finding symbols"
# Find all ELF files, strip them, and move symbols to PREFIX/usr/lib/debug/ORIG_PATH
ELF_FILES=$(mktemp -t elf_files)
LF=$(printf '\nX')
LF=${LF%X}
find ${STAGEDIR} -type f \
-exec /usr/bin/file -nNF "${LF}" {} + | while read f; do
read output
case "${output}" in
ELF\ *\ executable,\ *FreeBSD*,\ not\ stripped*|\
ELF\ *\ shared\ object,\ *FreeBSD*,\ not\ stripped*)
echo "${f}"
;;
esac
done > ${ELF_FILES}
# Create all of the /usr/local/lib/* dirs
lib_dir="${STAGEDIR}.debug${PREFIX}/lib/debug"
sed -e "s,^${STAGEDIR}${PREFIX}/,${lib_dir}/," -e 's,/[^/]*$,,' \
${ELF_FILES} | sort -u | xargs mkdir -p
while read staged_elf_file; do
elf_file_name="${staged_elf_file##*/}"
lib_dir_dest="${lib_dir}/${staged_elf_file#${STAGEDIR}${PREFIX}/}"
# Strip off filename
lib_dir_dest="${lib_dir_dest%/*}"
# Save symbols to f.debug
objcopy --only-keep-debug "${staged_elf_file}" \
"${lib_dir_dest}/${elf_file_name}.debug"
# Strip and add a reference to f.debug for finding the symbols.
objcopy --strip-debug --strip-unneeded \
--add-gnu-debuglink="${lib_dir_dest}/${elf_file_name}.debug" \
"${staged_elf_file}"
msg "Saved symbols for ${staged_elf_file}"
done < ${ELF_FILES}
rm -f ${ELF_FILES}