#!/bin/bash
# build_vindex_bench.sh — build the vindex_bench oracle/proof harness, with the
# real Metal batch-cosine bridge on Darwin and a zero-dependency CPU stub
# everywhere else. Mirrors the two-step recipe documented in vindex_bench.c's
# own header comment; this script exists so that recipe is one command, not a
# copy-pasted paragraph.
#
# Usage: ./build_vindex_bench.sh [output_path]
set -euo pipefail
cd "$(dirname "$0")"
OUT="${1:-./vindex_bench}"
CC="${CC:-cc}"

if [ "$(uname -s)" = "Darwin" ]; then
  echo "== Darwin: building with the real Metal bridge =="
  "$CC" -O2 -std=c11 -x objective-c -c eg_metal_cosine.m -o /tmp/eg_metal_cosine.o \
    -framework Metal -framework Foundation
  "$CC" -O2 -std=c11 -w vindex_bench.c engram_vindex.c /tmp/eg_metal_cosine.o -lm \
    -framework Metal -framework Foundation -o "$OUT"
else
  echo "== non-Darwin: building with the CPU-only stub (no Metal) =="
  "$CC" -O2 -std=c11 -w vindex_bench.c engram_vindex.c eg_metal_cosine_stub.c -lm -o "$OUT"
fi

echo "built: $OUT"