#!/usr/bin/env bash
# scripts/build-prod.sh
# Production build of llama.cpp (Release + LTO, RTX 3070 target).

set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
ROOT="$SCRIPT_DIR/.."
VENDOR="$ROOT/vendor/llama.cpp"
BUILD_DIR="$VENDOR/build-prod"

if [ ! -f "$VENDOR/CMakeLists.txt" ]; then
    echo "[ERROR] vendor/llama.cpp not initialised."
    echo "  Run: git submodule update --init --recursive"
    exit 1
fi

echo "[INFO] Configuring llama.cpp (prod, CUDA cc86)..."
cmake -S "$VENDOR" -B "$BUILD_DIR" \
    -DCMAKE_BUILD_TYPE=Release \
    -DBUILD_SHARED_LIBS=ON \
    -DGGML_CUDA=ON \
    -DCMAKE_CUDA_ARCHITECTURES=86 \
    -DLLAMA_BUILD_TESTS=OFF \
    -DLLAMA_BUILD_EXAMPLES=OFF \
    -DCMAKE_INTERPROCEDURAL_OPTIMIZATION=ON

echo "[INFO] Building (prod)..."
cmake --build "$BUILD_DIR" \
    --parallel "$(nproc 2>/dev/null || echo 4)" \
    --config Release

echo "[OK] Prod build complete: $BUILD_DIR"