build.sh

#!/bin/bash

# Build script for BlockStructuredSolvers_CPP
# Usage: ./build.sh [cpu|cuda] [debug|release]

set -e  # Exit on any error

# Default values
BACKEND="cpu"
BUILD_TYPE="Release"

# Parse arguments
if [ $# -ge 1 ]; then
    BACKEND=$1
fi

if [ $# -ge 2 ]; then
    if [ "$2" = "debug" ]; then
        BUILD_TYPE="Debug"
    elif [ "$2" = "release" ]; then
        BUILD_TYPE="Release"
    fi
fi

echo "Building BlockStructuredSolvers_CPP..."
echo "Backend: $BACKEND"
echo "Build type: $BUILD_TYPE"
echo

# Create build directory
BUILD_DIR="build-$BACKEND-$(echo $BUILD_TYPE | tr '[:upper:]' '[:lower:]')"
mkdir -p $BUILD_DIR
cd $BUILD_DIR

# Configure CMake
CMAKE_ARGS="-DCMAKE_BUILD_TYPE=$BUILD_TYPE"

if [ "$BACKEND" = "cuda" ]; then
    echo "Configuring with CUDA support..."
    CMAKE_ARGS="$CMAKE_ARGS -DENABLE_CUDA=ON"
    
    # Check if CUDA is available
    if ! command -v nvcc &> /dev/null; then
        echo "Warning: nvcc not found. Make sure CUDA is properly installed."
    fi
else
    echo "Configuring CPU-only build..."
fi

cmake .. $CMAKE_ARGS

# Build
echo "Building..."
make -j$(nproc)

echo
echo "Build completed successfully!"
echo "Executables are in: $PWD"
echo

# Run tests
echo "Running tests..."
if ctest --output-on-failure; then
    echo "All tests passed!"
else
    echo "Some tests failed. Check the output above."
    exit 1
fi

echo
echo "Build and test completed successfully!"
echo
echo "To run examples:"
echo "  CPU example: ./$BUILD_DIR/example_cpu"
if [ "$BACKEND" = "cuda" ]; then
    echo "  CUDA example: ./$BUILD_DIR/example_cuda"
fi
echo "  Benchmark: ./$BUILD_DIR/benchmark"