#!/bin/bash
# Build IX engine for Linux x86_64 with CUDA/CPU/Vulkan
set -e

BACKEND=${1:-cpu}
OUTPUT="ix-linux-x64-$BACKEND"

echo "[BUILD] Linux x64 | Backend: $BACKEND"
cmake -B build \
  -DCMAKE_BUILD_TYPE=Release \
  -DIX_BACKEND=${BACKEND^^} \
  -DCMAKE_C_FLAGS="-O3 -march=native" 2>&1 | tail -5
cmake --build build --target ix -j$(nproc) 2>&1 | tail -5
cp build/bin/ix "$OUTPUT"
echo "[✓] Built: $OUTPUT ($(wc -c < $OUTPUT) bytes)"