237 lines
7.8 KiB
Bash
237 lines
7.8 KiB
Bash
declare -a autoPatchelfLibs
|
|
|
|
gatherLibraries() {
|
|
autoPatchelfLibs+=("$1/lib")
|
|
}
|
|
|
|
addEnvHooks "$targetOffset" gatherLibraries
|
|
|
|
isExecutable() {
|
|
# For dynamically linked ELF files it would be enough to check just for the
|
|
# INTERP section. However, we won't catch statically linked executables as
|
|
# they only have an ELF type of EXEC but no INTERP.
|
|
#
|
|
# So what we do here is just check whether *either* the ELF type is EXEC
|
|
# *or* there is an INTERP section. This also catches position-independent
|
|
# executables, as they typically have an INTERP section but their ELF type
|
|
# is DYN.
|
|
isExeResult="$(LANG=C $READELF -h -l "$1" 2> /dev/null \
|
|
| grep '^ *Type: *EXEC\>\|^ *INTERP\>')"
|
|
# not using grep -q, because it can cause Broken pipe
|
|
[ -n "$isExeResult" ]
|
|
}
|
|
|
|
# We cache dependencies so that we don't need to search through all of them on
|
|
# every consecutive call to findDependency.
|
|
declare -a cachedDependencies
|
|
|
|
addToDepCache() {
|
|
local existing
|
|
for existing in "${cachedDependencies[@]}"; do
|
|
if [ "$existing" = "$1" ]; then return; fi
|
|
done
|
|
cachedDependencies+=("$1")
|
|
}
|
|
|
|
declare -gi depCacheInitialised=0
|
|
declare -gi doneRecursiveSearch=0
|
|
declare -g foundDependency
|
|
|
|
getDepsFromSo() {
|
|
ldd "$1" 2> /dev/null | sed -n -e 's/[^=]*=> *\(.\+\) \+([^)]*)$/\1/p'
|
|
}
|
|
|
|
populateCacheWithRecursiveDeps() {
|
|
local so found foundso
|
|
for so in "${cachedDependencies[@]}"; do
|
|
for found in $(getDepsFromSo "$so"); do
|
|
local libdir="${found%/*}"
|
|
local base="${found##*/}"
|
|
local soname="${base%.so*}"
|
|
for foundso in "${found%/*}/$soname".so*; do
|
|
addToDepCache "$foundso"
|
|
done
|
|
done
|
|
done
|
|
}
|
|
|
|
getSoArch() {
|
|
objdump -f "$1" | sed -ne 's/^architecture: *\([^,]\+\).*/\1/p'
|
|
}
|
|
|
|
# NOTE: If you want to use this function outside of the autoPatchelf function,
|
|
# keep in mind that the dependency cache is only valid inside the subshell
|
|
# spawned by the autoPatchelf function, so invoking this directly will possibly
|
|
# rebuild the dependency cache. See the autoPatchelf function below for more
|
|
# information.
|
|
findDependency() {
|
|
local filename="$1"
|
|
local arch="$2"
|
|
local lib dep
|
|
|
|
if [ $depCacheInitialised -eq 0 ]; then
|
|
for lib in "${autoPatchelfLibs[@]}"; do
|
|
for so in "$lib/"*.so*; do addToDepCache "$so"; done
|
|
done
|
|
depCacheInitialised=1
|
|
fi
|
|
|
|
for dep in "${cachedDependencies[@]}"; do
|
|
if [ "$filename" = "${dep##*/}" ]; then
|
|
if [ "$(getSoArch "$dep")" = "$arch" ]; then
|
|
foundDependency="$dep"
|
|
return 0
|
|
fi
|
|
fi
|
|
done
|
|
|
|
# Populate the dependency cache with recursive dependencies *only* if we
|
|
# didn't find the right dependency so far and afterwards run findDependency
|
|
# again, but this time with $doneRecursiveSearch set to 1 so that it won't
|
|
# recurse again (and thus infinitely).
|
|
if [ $doneRecursiveSearch -eq 0 ]; then
|
|
populateCacheWithRecursiveDeps
|
|
doneRecursiveSearch=1
|
|
findDependency "$filename" "$arch" || return 1
|
|
return 0
|
|
fi
|
|
return 1
|
|
}
|
|
|
|
autoPatchelfFile() {
|
|
local dep rpath="" toPatch="$1"
|
|
|
|
local interpreter="$(< "$NIX_CC/nix-support/dynamic-linker")"
|
|
if isExecutable "$toPatch"; then
|
|
patchelf --set-interpreter "$interpreter" "$toPatch"
|
|
if [ -n "$runtimeDependencies" ]; then
|
|
for dep in $runtimeDependencies; do
|
|
rpath="$rpath${rpath:+:}$dep/lib"
|
|
done
|
|
fi
|
|
fi
|
|
|
|
echo "searching for dependencies of $toPatch" >&2
|
|
|
|
# We're going to find all dependencies based on ldd output, so we need to
|
|
# clear the RPATH first.
|
|
patchelf --remove-rpath "$toPatch"
|
|
|
|
local missing="$(
|
|
ldd "$toPatch" 2> /dev/null | \
|
|
sed -n -e 's/^[\t ]*\([^ ]\+\) => not found.*/\1/p'
|
|
)"
|
|
|
|
# This ensures that we get the output of all missing dependencies instead
|
|
# of failing at the first one, because it's more useful when working on a
|
|
# new package where you don't yet know its dependencies.
|
|
local -i depNotFound=0
|
|
|
|
for dep in $missing; do
|
|
echo -n " $dep -> " >&2
|
|
if findDependency "$dep" "$(getSoArch "$toPatch")"; then
|
|
rpath="$rpath${rpath:+:}${foundDependency%/*}"
|
|
echo "found: $foundDependency" >&2
|
|
else
|
|
echo "not found!" >&2
|
|
depNotFound=1
|
|
fi
|
|
done
|
|
|
|
# This makes sure the builder fails if we didn't find a dependency, because
|
|
# the stdenv setup script is run with set -e. The actual error is emitted
|
|
# earlier in the previous loop.
|
|
[ $depNotFound -eq 0 -o -n "$autoPatchelfIgnoreMissingDeps" ]
|
|
|
|
if [ -n "$rpath" ]; then
|
|
echo "setting RPATH to: $rpath" >&2
|
|
patchelf --set-rpath "$rpath" "$toPatch"
|
|
fi
|
|
}
|
|
|
|
# Can be used to manually add additional directories with shared object files
|
|
# to be included for the next autoPatchelf invocation.
|
|
addAutoPatchelfSearchPath() {
|
|
local -a findOpts=()
|
|
|
|
# XXX: Somewhat similar to the one in the autoPatchelf function, maybe make
|
|
# it DRY someday...
|
|
while [ $# -gt 0 ]; do
|
|
case "$1" in
|
|
--) shift; break;;
|
|
--no-recurse) shift; findOpts+=("-maxdepth" 1);;
|
|
--*)
|
|
echo "addAutoPatchelfSearchPath: ERROR: Invalid command line" \
|
|
"argument: $1" >&2
|
|
return 1;;
|
|
*) break;;
|
|
esac
|
|
done
|
|
|
|
cachedDependencies+=(
|
|
$(find "$@" "${findOpts[@]}" \! -type d \
|
|
\( -name '*.so' -o -name '*.so.*' \))
|
|
)
|
|
}
|
|
|
|
autoPatchelf() {
|
|
local norecurse=
|
|
|
|
while [ $# -gt 0 ]; do
|
|
case "$1" in
|
|
--) shift; break;;
|
|
--no-recurse) shift; norecurse=1;;
|
|
--*)
|
|
echo "autoPatchelf: ERROR: Invalid command line" \
|
|
"argument: $1" >&2
|
|
return 1;;
|
|
*) break;;
|
|
esac
|
|
done
|
|
|
|
if [ $# -eq 0 ]; then
|
|
echo "autoPatchelf: No paths to patch specified." >&2
|
|
return 1
|
|
fi
|
|
|
|
echo "automatically fixing dependencies for ELF files" >&2
|
|
|
|
# Add all shared objects of the current output path to the start of
|
|
# cachedDependencies so that it's choosen first in findDependency.
|
|
addAutoPatchelfSearchPath ${norecurse:+--no-recurse} -- "$@"
|
|
|
|
# Here we actually have a subshell, which also means that
|
|
# $cachedDependencies is final at this point, so whenever we want to run
|
|
# findDependency outside of this, the dependency cache needs to be rebuilt
|
|
# from scratch, so keep this in mind if you want to run findDependency
|
|
# outside of this function.
|
|
while IFS= read -r -d $'\0' file; do
|
|
isELF "$file" || continue
|
|
segmentHeaders="$(LANG=C $READELF -l "$file")"
|
|
# Skip if the ELF file doesn't have segment headers (eg. object files).
|
|
# not using grep -q, because it can cause Broken pipe
|
|
[ -n "$(echo "$segmentHeaders" | grep '^Program Headers:')" ] || continue
|
|
if isExecutable "$file"; then
|
|
# Skip if the executable is statically linked.
|
|
[ -n "$(echo "$segmentHeaders" | grep "^ *INTERP\\>")" ] || continue
|
|
fi
|
|
autoPatchelfFile "$file"
|
|
done < <(find "$@" ${norecurse:+-maxdepth 1} -type f -print0)
|
|
}
|
|
|
|
# XXX: This should ultimately use fixupOutputHooks but we currently don't have
|
|
# a way to enforce the order. If we have $runtimeDependencies set, the setup
|
|
# hook of patchelf is going to ruin everything and strip out those additional
|
|
# RPATHs.
|
|
#
|
|
# So what we do here is basically run in postFixup and emulate the same
|
|
# behaviour as fixupOutputHooks because the setup hook for patchelf is run in
|
|
# fixupOutput and the postFixup hook runs later.
|
|
postFixupHooks+=('
|
|
if [ -z "${dontAutoPatchelf-}" ]; then
|
|
autoPatchelf -- $(for output in $outputs; do
|
|
[ -e "${!output}" ] || continue
|
|
echo "${!output}"
|
|
done)
|
|
fi
|
|
')
|