nixpkgs/pkgs/build-support/setup-hooks/strip.sh

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# This setup hook strips libraries and executables in the fixup phase.
addHook fixupOutput _doStrip
_doStrip() {
if [ -z "$dontStrip" ]; then
stripDebugList=${stripDebugList:-lib lib32 lib64 libexec bin sbin}
if [ -n "$stripDebugList" ]; then
stripDirs "$stripDebugList" "${stripDebugFlags:--S}"
fi
stripAllList=${stripAllList:-}
if [ -n "$stripAllList" ]; then
stripDirs "$stripAllList" "${stripAllFlags:--s}"
fi
fi
}
stripDirs() {
local dirs="$1"
local stripFlags="$2"
local dirsNew=
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 flags $stripFlags) in $dirs"
find $dirs -type f -print0 | xargs -0 ${xargsFlags:--r} strip $commonStripFlags $stripFlags || true
stopNest
fi
}