#!/usr/bin/env bash
|
|
# Copyright (C) 2016 Samuel Martin <s.martin49@gmail.com>
|
# Copyright (C) 2017 Wolfgang Grandegger <wg@grandegger.com>
|
#
|
# This program is free software; you can redistribute it and/or modify
|
# it under the terms of the GNU General Public License as published by
|
# the Free Software Foundation; either version 2 of the License, or
|
# (at your option) any later version.
|
#
|
# This program is distributed in the hope that it will be useful,
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
# General Public License for more details.
|
#
|
# You should have received a copy of the GNU General Public License
|
# along with this program; if not, write to the Free Software
|
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
usage() {
|
cat <<EOF >&2
|
Usage: ${0} TREE_KIND
|
|
Description:
|
|
This script scans a tree and sanitize ELF files' RPATH found in there.
|
|
Sanitization behaves the same whatever the kind of the processed tree,
|
but the resulting RPATH differs. The rpath sanitization is done using
|
"patchelf --make-rpath-relative".
|
|
Arguments:
|
|
TREE_KIND Kind of tree to be processed.
|
Allowed values: host, target, staging
|
|
Environment:
|
|
PATCHELF patchelf program to use
|
(default: HOST_DIR/bin/patchelf)
|
|
HOST_DIR host directory
|
STAGING_DIR staging directory
|
TARGET_DIR target directory
|
|
TOOLCHAIN_EXTERNAL_DOWNLOAD_INSTALL_DIR
|
(default HOST_DIR/opt/ext-toolchain)
|
|
Returns: 0 if success or 1 in case of error
|
|
EOF
|
}
|
|
: ${PATCHELF:=${HOST_DIR}/bin/patchelf}
|
|
# ELF files should not be in these sub-directories
|
HOST_EXCLUDEPATHS="/share/terminfo"
|
STAGING_EXCLUDEPATHS="/usr/include /usr/share/terminfo"
|
TARGET_EXCLUDEPATHS="/lib/firmware"
|
|
main() {
|
local rootdir
|
local tree="${1}"
|
local find_args=( )
|
local sanitize_extra_args=( )
|
|
if ! "${PATCHELF}" --version > /dev/null 2>&1; then
|
echo "Error: can't execute patchelf utility '${PATCHELF}'"
|
exit 1
|
fi
|
|
case "${tree}" in
|
host)
|
rootdir="${HOST_DIR}"
|
|
# do not process the sysroot (only contains target binaries)
|
find_args+=( "-path" "${STAGING_DIR}" "-prune" "-o" )
|
|
# do not process the external toolchain installation directory to
|
# avoid breaking it.
|
test "${TOOLCHAIN_EXTERNAL_DOWNLOAD_INSTALL_DIR}" != "" && \
|
find_args+=( "-path" "${TOOLCHAIN_EXTERNAL_DOWNLOAD_INSTALL_DIR}" "-prune" "-o" )
|
|
for excludepath in ${HOST_EXCLUDEPATHS}; do
|
find_args+=( "-path" "${HOST_DIR}""${excludepath}" "-prune" "-o" )
|
done
|
|
# do not process the patchelf binary but a copy to work-around "file in use"
|
find_args+=( "-path" "${PATCHELF}" "-prune" "-o" )
|
cp "${PATCHELF}" "${PATCHELF}.__to_be_patched"
|
|
# we always want $ORIGIN-based rpaths to make it relocatable.
|
sanitize_extra_args+=( "--relative-to-file" )
|
;;
|
|
staging)
|
rootdir="${STAGING_DIR}"
|
|
# ELF files should not be in these sub-directories
|
for excludepath in ${STAGING_EXCLUDEPATHS}; do
|
find_args+=( "-path" "${STAGING_DIR}""${excludepath}" "-prune" "-o" )
|
done
|
|
# should be like for the target tree below
|
sanitize_extra_args+=( "--no-standard-lib-dirs" )
|
;;
|
|
target)
|
rootdir="${TARGET_DIR}"
|
|
for excludepath in ${TARGET_EXCLUDEPATHS}; do
|
find_args+=( "-path" "${TARGET_DIR}""${excludepath}" "-prune" "-o" )
|
done
|
|
# we don't want $ORIGIN-based rpaths but absolute paths without rootdir.
|
# we also want to remove rpaths pointing to /lib or /usr/lib.
|
sanitize_extra_args+=( "--no-standard-lib-dirs" )
|
;;
|
|
*)
|
usage
|
exit 1
|
;;
|
esac
|
|
find_args+=( "-type" "f" "-print" )
|
|
while read file ; do
|
# check if it's an ELF file
|
rpath=$(${PATCHELF} --print-rpath "${file}" 2>&1)
|
if test $? -ne 0 ; then
|
continue
|
fi
|
|
# make files writable if necessary
|
changed=$(chmod -c u+w "${file}")
|
|
# With per-package directory support, most RPATH of host
|
# binaries will point to per-package directories. This won't
|
# work with the --make-rpath-relative ${rootdir} invocation as
|
# the per-package host directory is not within ${rootdir}. So,
|
# we rewrite all RPATHs pointing to per-package directories so
|
# that they point to the global host directry.
|
changed_rpath=$(echo ${rpath} | sed "s@${PER_PACKAGE_DIR}/[^/]\+/host@${HOST_DIR}@")
|
if test "${rpath}" != "${changed_rpath}" ; then
|
${PATCHELF} --set-rpath ${changed_rpath} "${file}"
|
fi
|
|
# call patchelf to sanitize the rpath
|
${PATCHELF} --make-rpath-relative "${rootdir}" ${sanitize_extra_args[@]} "${file}"
|
# restore the original permission
|
test "${changed}" != "" && chmod u-w "${file}"
|
done < <(find "${rootdir}" ${find_args[@]})
|
|
# Restore patched patchelf utility
|
test "${tree}" = "host" && mv "${PATCHELF}.__to_be_patched" "${PATCHELF}"
|
|
# ignore errors
|
return 0
|
}
|
|
main ${@}
|
