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path: root/Mk/Scripts/generate-symbols.sh
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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}