Add rsync - #568

#!/bin/sh
set -eu
curl -fsSL 'https://raw.githubusercontent.com/Cyan4973/xxHash/v0.8.3/Makefile' |
  grep -n -A3 '^libxxhash\.a:'

#!/bin/sh
set -eu
printf '--- packages/xxhash/build.sh ---\n'
cat -n packages/xxhash/build.sh
printf '\n--- make documentation for ARFLAGS override ---\n'
make --version 2>/dev/null | head -n 1 || true
make --help 2>/dev/null | sed -n '/override/,+3p' || true
printf '\n--- Make behavior probe with Makefile from raw v0.8.3 ---\n'
tmp="$(mktemp -d)"
cd "$tmp"
printf 'AR = echo-ar\nlibxxhash.a: ARFLAGS = rcs\n\t$(AR) $(ARFLAGS) $@\n\n' > Makefile
export ARFLAGS=Drc
printf '-- with explicit ARFLAGS on make command line --\n'
make -f Makefile ARFLAGS=rcsD
printf '-- without explicit ARFLAGS on make command line --\n'
make -f Makefile

#!/bin/sh
set -eu
printf '%s\n' '--- packages/xxhash/build.sh ---'
cat -n packages/xxhash/build.sh
printf '%s\n' ''
printf '%s\n' '--- make documentation for override/directives ---'
make --version 2>/dev/null | head -n 1 || true
make --help 2>/dev/null | sed -n '/override/,+4p' || true
printf '%s\n' ''
printf '%s\n' '--- Make behavior probe with Makefile from raw v0.8.3 ---'
tmp="$(mktemp -d)"
printf '%s\n' 'AR = echo-ar' > "$tmp/Makefile"
printf '%s\n' 'libxxhash.a: ARFLAGS = rcs' >> "$tmp/Makefile"
printf '%s\n' '	$(AR) $(ARFLAGS) $@' >> "$tmp/Makefile"
printf '%s\n' '' >> "$tmp/Makefile"
printf '%s\n' '-- exported ARFLAGS only --'
ARFLAGS=Drc make -f "$tmp/Makefile"
printf '%s\n' '-- explicit ARFLAGS passed to make command line --'
make -f "$tmp/Makefile" ARFLAGS=rcsD
printf '%s\n' '-- patch the target --'
sed -i 's/^libxxhash\.a: ARFLAGS = rcs/libxxhash.a: ARFLAGS = rcsD/' "$tmp/Makefile"
ARFLAGS=Drc make -f "$tmp/Makefile"

#!/bin/sh
set -eu
printf '%s\n' '--- upstream targets around archive and install ---'
curl -fsSL 'https://raw.githubusercontent.com/Cyan4973/xxHash/v0.8.3/Makefile' | sed -n '135,185p'
printf '%s\n' ''
printf '%s\n' '--- deterministic archive behavior for GNU ar flags ---'
python3 - <<'PY'
flags = "rcsD"
print("libxxhash.a target ARFLAGS rcs assignment will replace exported ARFLAGS=Drc in GNU make")
print("rcsD preserves the index and adds the --deterministic flag for GNU ar")
print("Drc only would override rcs and replace the current order with deterministic+create+replace, dropping index")
PY

#!/bin/bash
set -euo pipefail

echo "Repository files matching build.sh:"
git ls-files 'packages/*/build.sh' | sed -n '1,80p'

echo
echo "packages/xxhash/build.sh:"
if [ -f packages/xxhash/build.sh ]; then
  cat -n packages/xxhash/build.sh
else
  echo "missing packages/xxhash/build.sh"
fi

echo
echo "Build script occurrences of OUTPUT_DIR / DESTDIR:"
rg -n 'OUTPUT_DIR|DESTDIR|PREFIX|make -j|nproc' packages/*/build.sh packages/xxhash/build.sh || true

#!/bin/bash
set -euo pipefail

python3 - <<'PY'
import subprocess
import tempfile

def exec_sh(script, env=None):
    if env is None:
        env = {"PATH": subprocess.os.environ.get("PATH", "/usr/bin:/bin"), "HOME": subprocess.os.path.expanduser("~")}
    p = subprocess.Popen(['sh', '-e'], stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE, env=env, text=True)
    stdout, stderr = p.communicate(script, timeout=10)
    return p.returncode, stdout.splitlines(), stderr.splitlines()

cases = [
    ("unset", {}),
    ("empty", {"OUTPUT_DIR": ""}),
    ("space", {"OUTPUT_DIR": "/tmp/staging space"}),
    ("glob", {"OUTPUT_DIR": "/tmp/staging-[a-z]"}),
]

for name, env in cases:
    # Minimal shell script that mirrors the script options and the make command argument construction.
    # It uses printf -v so the exact unquoted substitution can be inspected without starting make.
    script = """\
set -euo pipefail
export CC=gcc
export CFLAGS="-O3 -pipe -ffile-prefix-map=$(pwd)=/builddir -gno-record-gcc-switches"
export CXXFLAGS="$CFLAGS"
export LDFLAGS="-Wl,--build-id=none"
export ARFLAGS=Drc
printf -v cmd 'make -j%%s DESTDIR=%s PREFIX=/usr install' "$(nproc)" "%s"
printf '%s\n' "$cmd"
exit 0
"""
    code, stdout, stderr = exec_sh(script, env)
    print(f"\nCASE: {name}")
    if code != 0:
        print("exit", code)
        for line in stderr:
            print(line)
    else:
        print("\n".join(stdout))

print("\nBash shellcheck behavior for double-quote glob expansion would be read-only, but no shellcheck availability check needed.")
PY

#!/bin/bash
set -euo pipefail

echo "Check bash printf -v unquoted substitution around spaces/globs:"
bash -c '
set -euo pipefail
prefix=/usr
dest=""
printf -v cmd "make -j%s DESTDIR=%s PREFIX=/usr install" "$(nproc)" "$dest"
printf "cmd=%s\n" "$cmd"
if [ "$dest" = "" ]; then
  printf "empty case: DESTDIR becomes empty\n"
fi
'
bash -c '
set -euo pipefail
prefix=/usr
dest="/tmp/staging space"
printf -v cmd "make -j%s DESTDIR=%s PREFIX=/usr install" "$(nproc)" "$dest"
printf "cmd=%s\n" "$cmd"
if printf "%s" "$cmd" | grep -qF "DESTDIR=/tmp/staging space"; then
  printf "space case: quoted expansion preserves space\n"
fi
'