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nixpkgs/pkgs/build-support/setup-hooks/strip.sh
sternenseemann 11fe2fc3cf stdenv: move --enable-deterministic-archives flag into GNU wrapper
`--enable-deterministic-archives` is a GNU specific strip flag and
causes other strip implementations (for example LLVM's, see #138013)
to fail. Since strip failures are ignored, this means that stripping
doesn't work at all in certain situation (causing unnecessary
dependencies etc.).

To fix this, no longer pass `--enable-deterministic-archives`
unconditionally, but instead add it in a GNU binutils specific strip
wrapper only.

`commonStripFlags` was only used for this flag, so we can remove
it altogether.

Future work could be to make a generic strip wrapper, with support for
nix-support/strip-flags-{before,after} and NIX_STRIP_FLAGS_{BEFORE,AFTER}.
This possibly overkill and unnecessary though -- also with the
additional challenge of incorporating the darwin strip wrapper somehow.
2021-09-18 15:11:17 +02:00

58 lines
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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 $stripFlags '{}' \; 2>/dev/null
stopNest
fi
}