# Build stage
FROM gcc:14 AS builder

WORKDIR /app

# Copy source code
COPY src ./src

# Build shared library
RUN gcc -shared -fPIC -O3 -o libboc_ipc.so src/ipc.c \
    -lpthread -lrt

# Build static library
RUN gcc -c -O3 -o ipc.o src/ipc.c && \
    ar rcs libboc_ipc.a ipc.o

# Final stage - minimal runtime
FROM alpine:latest

RUN apk add --no-cache libc6-compat

WORKDIR /app

# Copy libraries
COPY --from=builder /app/libboc_ipc.so /usr/local/lib/
COPY --from=builder /app/libboc_ipc.a /usr/local/lib/
COPY --from=builder /app/src/ipc.h /usr/local/include/

# Update library cache
RUN ldconfig /usr/local/lib || true

# Default command - keep container running for IPC
CMD ["sh", "-c", "echo 'BOC C Runtime ready' && tail -f /dev/null"]