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nixpkgs/pkgs/build-support/setup-hooks/strip.sh
Emery Hemingway e4d17dc558 setup-hooks/strip: more robust stripping
Use "find -exec" to strip rather than "find … | xargs …". The former
ensures that stripping is attempted for each file, whereas the latter
will stop stripping at the first failure. Unstripped files can fool
runtime dependency detection and bloat closure sizes.
2020-12-08 05:35:48 +01:00

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# This setup hook strips libraries and executables in the fixup phase.
fixupOutputHooks+=(_doStrip)
_doStrip() {
# We don't bother to strip build platform code because it shouldn't make it
# to $out anyways---if it does, that's a bigger problem that a lack of
# stripping will help catch.
local -ra flags=(dontStripHost dontStripTarget)
local -ra stripCmds=(STRIP TARGET_STRIP)
# Optimization
if [[ "${STRIP-}" == "${TARGET_STRIP-}" ]]; then
dontStripTarget+=1
fi
local i
for i in ${!stripCmds[@]}; do
local -n flag="${flags[$i]}"
local -n stripCmd="${stripCmds[$i]}"
# `dontStrip` disables them all
if [[ "${dontStrip-}" || "${flag-}" ]] || ! type -f "${stripCmd-}" 2>/dev/null
then continue; fi
stripDebugList=${stripDebugList:-lib lib32 lib64 libexec bin sbin}
if [ -n "$stripDebugList" ]; then
stripDirs "$stripCmd" "$stripDebugList" "${stripDebugFlags:--S}"
fi
stripAllList=${stripAllList:-}
if [ -n "$stripAllList" ]; then
stripDirs "$stripCmd" "$stripAllList" "${stripAllFlags:--s}"
fi
done
}
stripDirs() {
local cmd="$1"
local dirs="$2"
local stripFlags="$3"
local dirsNew=
local d
for d in ${dirs}; do
if [ -d "$prefix/$d" ]; then
dirsNew="${dirsNew} $prefix/$d "
fi
done
dirs=${dirsNew}
if [ -n "${dirs}" ]; then
header "stripping (with command $cmd and flags $stripFlags) in$dirs"
find $dirs -type f -exec $cmd $commonStripFlags $stripFlags '{}' \; #
stopNest
fi
}