build_wrapper.sh

#!/bin/bash

# build_wrapper.sh
# Automates the generation of the C# wrapper for Baumer neoAPI on Linux.

set -e # Exit immediately if a command exits with a non-zero status.

ROOT_DIR=$(pwd)
WRAPPER_DIR="$ROOT_DIR/wrapper"
OUTPUT_FILE="$WRAPPER_DIR/neoAPI_linux.cs"
INTERFACE_FILE="$ROOT_DIR/neoapi.i"

if [ "$#" -eq 0 ]; then
    if [ -d "$WRAPPER_DIR/include/neoapi" ] && [ -d "$WRAPPER_DIR/lib" ]; then
        echo "Using localized headers and libraries in $WRAPPER_DIR"
        INC_PATH="$WRAPPER_DIR/include"
        LIB_PATH="$WRAPPER_DIR/lib"
    else
        echo "Usage: $0 <path_to_baumer_sdk>"
        echo "Alternatively, provide include/neoapi and lib in the wrapper directory."
        exit 1
    fi
else
    SDK_PATH=$(realpath "$1")
    echo "Using SDK at: $SDK_PATH"

    # 1. Validation
    if [ ! -d "$SDK_PATH/include/neoapi" ] || [ ! -d "$SDK_PATH/lib" ]; then
        echo "Error: SDK path does not contain include/neoapi or lib directory."
        exit 1
    fi

    # Update localized assets
    echo "Updating localized headers and libraries from SDK..."
    mkdir -p "$WRAPPER_DIR/include/neoapi" "$WRAPPER_DIR/lib"
    cp -r "$SDK_PATH"/include/neoapi/* "$WRAPPER_DIR/include/neoapi/"
    cp -r "$SDK_PATH"/lib/* "$WRAPPER_DIR/lib/"

    INC_PATH="$WRAPPER_DIR/include"
    LIB_PATH="$WRAPPER_DIR/lib"
fi

if [ ! -f "$INTERFACE_FILE" ]; then
    echo "Error: SWIG interface file $INTERFACE_FILE not found."
    exit 1
fi

# 2. Check for dependencies
if ! command -v swig &> /dev/null; then
    echo "Error: swig is not installed. Please run 'sudo apt install swig'."
    exit 1
fi

if ! command -v g++ &> /dev/null; then
    echo "Error: g++ is not installed."
    exit 1
fi

# 3. Preparation
echo "Cleaning up generated files..."
rm -f "$WRAPPER_DIR"/*.cs "$WRAPPER_DIR"/*.cxx "$WRAPPER_DIR"/*.so
rm -f "$OUTPUT_FILE"

# 4. SWIG Generation
echo "Running SWIG with namespace NeoAPI_Linux..."
swig -c++ -csharp -namespace NeoAPI_Linux -I"$INC_PATH" -outdir "$WRAPPER_DIR" -o "$WRAPPER_DIR/neoapi_wrap.cxx" "$INTERFACE_FILE"

# 5. Compilation
echo "Compiling native library..."
g++ -shared -fPIC "$WRAPPER_DIR/neoapi_wrap.cxx" \
    -I"$INC_PATH" \
    -L"$LIB_PATH" \
    -Wl,--no-as-needed -lneoapi_cpp \
    -Wl,-rpath,'$ORIGIN/lib' -Wl,-rpath,'$ORIGIN' \
    -o "$WRAPPER_DIR/libneoapi_csharp.so"

# 6. Consolidation
echo "Consolidating C# files into $OUTPUT_FILE..."
if [ -f "$ROOT_DIR/extra_handlers.cs" ]; then
    cat "$WRAPPER_DIR"/*.cs "$ROOT_DIR/extra_handlers.cs" > "$OUTPUT_FILE"
else
    cat "$WRAPPER_DIR"/*.cs > "$OUTPUT_FILE"
fi

# 7. Cleanup
echo "Cleaning intermediate files..."
find "$WRAPPER_DIR" -maxdepth 1 -name "*.cs" ! -name "neoAPI_linux.cs" -delete
find "$WRAPPER_DIR" -name "*.cxx" -delete

echo "Done! Generated files:"
echo "  - $OUTPUT_FILE"
echo "  - $WRAPPER_DIR/libneoapi_csharp.so"