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#!/usr/bin/env bash
# This script scans $(HOST_DIR)/{bin,sbin} for all ELF files, and checks
# they have an RPATH to $(HOST_DIR)/usr/lib if they need libraries from
# there.
# Override the user's locale so we are sure we can parse the output of
# readelf(1) and file(1)
export LC_ALL=C
main() {
local pkg="${1}"
local hostdir="${2}"
local file ret
# Remove duplicate and trailing '/' for proper match
hostdir="$( sed -r -e 's:/+:/:g; s:/$::;' <<<"${hostdir}" )"
ret=0
while read file; do
elf_needs_rpath "${file}" "${hostdir}" || continue
check_elf_has_rpath "${file}" "${hostdir}" && continue
if [ ${ret} -eq 0 ]; then
ret=1
printf "***
"
printf "*** ERROR: package %s installs executables without proper RPATH:
" "${pkg}"
fi
printf "*** %s
" "${file}"
done < <( find "${hostdir}"/{,usr/}{bin,sbin} -type f -exec file {} + 2>/dev/null \
|sed -r -e '/^([^:]+):.*\<ELF\>.*\<executable\>.*/!d' \
-e 's//\1/' \
)
return ${ret}
}
elf_needs_rpath() {
local file="${1}"
local hostdir="${2}"
local lib
while read lib; do
[ -e "${hostdir}/usr/lib/${lib}" ] && return 0
done < <( readelf -d "${file}" \
|sed -r -e '/^.* \(NEEDED\) .*Shared library: \[(.+)\]$/!d;' \
-e 's//\1/;' \
)
return 1
}
check_elf_has_rpath() {
local file="${1}"
local hostdir="${2}"
local rpath dir
while read rpath; do
for dir in ${rpath//:/ }; do
# Remove duplicate and trailing '/' for proper match
dir="$( sed -r -e 's:/+:/:g; s:/$::;' <<<"${dir}" )"
[ "${dir}" = "${hostdir}/usr/lib" ] && return 0
done
done < <( readelf -d "${file}" \
|sed -r -e '/.* \(R(UN)?PATH\) +Library r(un)?path: \[(.+)\]$/!d' \
-e 's//\3/;' \
)
return 1
}
main "${@}"
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