blob: fa138ca15a2a49adbbd531f7a23804dd65b88d9f [file] [log] [blame]
#!/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
if ${PATCHELF} --print-rpath "${file}" > /dev/null 2>&1; then
# make files writable if necessary
changed=$(chmod -c u+w "${file}")
# 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}"
fi
done < <(find "${rootdir}" ${find_args[@]})
# Restore patched patchelf utility
test "${tree}" = "host" && mv "${PATCHELF}.__to_be_patched" "${PATCHELF}"
# ignore errors
return 0
}
main ${@}