add_library(celrs_crsf STATIC crsf.c crsf_telemetry.c crsf_stream.c
                        crsf_param.c)
target_include_directories(celrs_crsf PUBLIC "${CMAKE_SOURCE_DIR}")
target_compile_features(celrs_crsf PRIVATE c_std_23)
target_link_libraries(celrs_crsf PUBLIC celrs_serial)

# Platform-agnostic serial logic — calls cel_serial_platform_*();
# symbol resolved by celrs_serial_platform (or a mock in tests)
add_library(celrs_serial STATIC serial.c)
target_include_directories(celrs_serial PUBLIC "${CMAKE_SOURCE_DIR}")
target_compile_features(celrs_serial PRIVATE c_std_23)

# Real platform backend — linked into production binaries only
add_library(celrs_serial_platform STATIC)
target_include_directories(celrs_serial_platform PUBLIC "${CMAKE_SOURCE_DIR}")
target_compile_features(celrs_serial_platform PRIVATE c_std_23)
if (IS_WINDOWS)
    target_sources(celrs_serial_platform PRIVATE platform/serial_win.c)
    target_link_libraries(celrs_serial_platform PRIVATE advapi32 setupapi)
elseif(IS_LINUX OR IS_MACOS)
    target_sources(celrs_serial_platform PRIVATE platform/serial_posix.c)
endif()

# Level-filtering logger — calls log_write(); symbol resolved by the final binary
add_library(celrs_logger STATIC logger.c)
target_include_directories(celrs_logger PUBLIC "${CMAKE_SOURCE_DIR}")
target_compile_features(celrs_logger PRIVATE c_std_23)

# Real log_write implementation — linked into production binaries only
add_library(celrs_log_write STATIC log_write.c)
target_include_directories(celrs_log_write PUBLIC "${CMAKE_SOURCE_DIR}")
target_compile_features(celrs_log_write PRIVATE c_std_23)
