98 lines
4 KiB
Bash
98 lines
4 KiB
Bash
# This setup hook strips libraries and executables in the fixup phase.
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fixupOutputHooks+=(_doStrip)
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_doStrip() {
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# We don't bother to strip build platform code because it shouldn't make it
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# to $out anyways---if it does, that's a bigger problem that a lack of
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# stripping will help catch.
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local -ra flags=(dontStripHost dontStripTarget)
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local -ra debugDirs=(stripDebugList stripDebugListTarget)
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local -ra allDirs=(stripAllList stripAllListTarget)
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local -ra stripCmds=(STRIP STRIP_FOR_TARGET)
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local -ra ranlibCmds=(RANLIB RANLIB_FOR_TARGET)
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# TODO(structured-attrs): This doesn't work correctly if one of
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# the items in strip*List or strip*Flags contains a space,
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# even with structured attrs enabled. This is OK for now
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# because very few packages set any of these, and it doesn't
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# affect any of them.
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#
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# After __structuredAttrs = true is universal, come back and
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# push arrays all the way through this logic.
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# Strip only host paths by default. Leave targets as is.
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stripDebugList=${stripDebugList[*]:-lib lib32 lib64 libexec bin sbin}
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stripDebugListTarget=${stripDebugListTarget[*]:-}
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stripAllList=${stripAllList[*]:-}
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stripAllListTarget=${stripAllListTarget[*]:-}
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local i
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for i in ${!stripCmds[@]}; do
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local -n flag="${flags[$i]}"
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local -n debugDirList="${debugDirs[$i]}"
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local -n allDirList="${allDirs[$i]}"
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local -n stripCmd="${stripCmds[$i]}"
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local -n ranlibCmd="${ranlibCmds[$i]}"
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# `dontStrip` disables them all
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if [[ "${dontStrip-}" || "${flag-}" ]] || ! type -f "${stripCmd-}" 2>/dev/null 1>&2
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then continue; fi
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stripDirs "$stripCmd" "$ranlibCmd" "$debugDirList" "${stripDebugFlags[*]:--S -p}"
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stripDirs "$stripCmd" "$ranlibCmd" "$allDirList" "${stripAllFlags[*]:--s -p}"
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done
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}
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stripDirs() {
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local cmd="$1"
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local ranlibCmd="$2"
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local paths="$3"
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local stripFlags="$4"
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local excludeFlags=()
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local pathsNew=
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[ -z "$cmd" ] && echo "stripDirs: Strip command is empty" 1>&2 && exit 1
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[ -z "$ranlibCmd" ] && echo "stripDirs: Ranlib command is empty" 1>&2 && exit 1
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local pattern
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if [ -n "${stripExclude:-}" ]; then
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for pattern in "${stripExclude[@]}"; do
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excludeFlags+=(-a '!' '(' -name "$pattern" -o -wholename "$prefix/$pattern" ')' )
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done
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fi
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local p
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for p in ${paths}; do
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if [ -e "$prefix/$p" ]; then
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pathsNew="${pathsNew} $prefix/$p"
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fi
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done
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paths=${pathsNew}
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if [ -n "${paths}" ]; then
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echo "stripping (with command $cmd and flags $stripFlags) in $paths"
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local striperr
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striperr="$(mktemp --tmpdir="$TMPDIR" 'striperr.XXXXXX')"
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# Do not strip lib/debug. This is a directory used by setup-hooks/separate-debug-info.sh.
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find $paths -type f "${excludeFlags[@]}" -a '!' -path "$prefix/lib/debug/*" -print0 |
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# Make sure we process files under symlinks only once. Otherwise
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# 'strip` can corrupt files when writes to them in parallel:
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# https://github.com/NixOS/nixpkgs/issues/246147#issuecomment-1657072039
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xargs -r -0 -n1 -- realpath -z | sort -u -z |
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xargs -r -0 -n1 -P "$NIX_BUILD_CORES" -- $cmd $stripFlags 2>"$striperr" || exit_code=$?
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# xargs exits with status code 123 if some but not all of the
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# processes fail. We don't care if some of the files couldn't
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# be stripped, so ignore specifically this code.
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[[ "$exit_code" = 123 || -z "$exit_code" ]] || (cat "$striperr" 1>&2 && exit 1)
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rm "$striperr"
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# 'strip' does not normally preserve archive index in .a files.
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# This usually causes linking failures against static libs like:
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# ld: ...-i686-w64-mingw32-stage-final-gcc-13.0.0-lib/i686-w64-mingw32/lib/libstdc++.dll.a:
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# error adding symbols: archive has no index; run ranlib to add one
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# Restore the index by running 'ranlib'.
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find $paths -name '*.a' -type f -exec $ranlibCmd '{}' \; 2>/dev/null
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fi
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}
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