cc/cmake_ext_add_aidl_library.txt

if ("${CMAKE_HOST_SYSTEM_PROCESSOR}" MATCHES "^(arm|aarch)")
    set(PREBUILTS_BIN_DIR "${CMAKE_CURRENT_SOURCE_DIR}/prebuilts/host/linux_musl-arm64/bin")
else()
    set(PREBUILTS_BIN_DIR "${CMAKE_CURRENT_SOURCE_DIR}/prebuilts/host/linux-x86/bin")
endif()
if (NOT AIDL_BIN)
    find_program(AIDL_BIN aidl REQUIRED HINTS "${PREBUILTS_BIN_DIR}")
endif()

function(add_aidl_library NAME LANG AIDLROOT SOURCES AIDLFLAGS)
    if (${CMAKE_VERSION} VERSION_GREATER_EQUAL "3.20")
        cmake_policy(SET CMP0116 NEW)
    endif()

    # Strip trailing slash
    get_filename_component(AIDLROOT_TRAILING "${AIDLROOT}" NAME)
    if ("${AIDLROOT_TRAILING}" STREQUAL "")
        get_filename_component(AIDLROOT "${AIDLROOT}foo" DIRECTORY)
    endif()

    set(GEN_DIR "${CMAKE_CURRENT_BINARY_DIR}/.intermediates/${NAME}-source")
    set(GEN_SOURCES)
    foreach (SOURCE ${SOURCES})
        set(SOURCE_FULL ${AIDLROOT}/${SOURCE})
        get_filename_component(SOURCE_WLE ${SOURCE} NAME_WLE)
        get_filename_component(SOURCE_SUBDIR ${SOURCE} DIRECTORY)
        set(GEN_SOURCE "${GEN_DIR}/${SOURCE_SUBDIR}/${SOURCE_WLE}.cpp")

        file(READ "${SOURCE}" SOURCE_CONTENTS)
        string(FIND "${SOURCE_CONTENTS}" "@VintfStability" VINTF_MATCH)
        set(STABILITY_FLAG)
        if (${VINTF_MATCH} GREATER_EQUAL 0)
            set(STABILITY_FLAG --stability vintf)
        endif()

        set(DEPFILE_ARG)
        if (NOT ${CMAKE_GENERATOR} STREQUAL "Unix Makefiles")
            set(DEPFILE_ARG DEPFILE "${GEN_SOURCE}.d")
        endif()

        add_custom_command(
            OUTPUT "${GEN_SOURCE}"
            MAIN_DEPENDENCY "${SOURCE_FULL}"
            ${DEPFILE_ARG}
            COMMAND "${AIDL_BIN}"
            ARGS
            --lang=${LANG}
            --include="${AIDLROOT}"
            --dep="${GEN_SOURCE}.d"
            --out="${GEN_DIR}"
            --header_out="${GEN_DIR}/include"
            --ninja
            --structured
            --min_sdk_version=current
            ${STABILITY_FLAG}
            ${AIDLFLAGS}
            "${SOURCE_FULL}"
        )
        list(APPEND GEN_SOURCES "${GEN_SOURCE}")
    endforeach()

    add_library(${NAME} ${GEN_SOURCES})

    target_include_directories(${NAME}
        PUBLIC
        "${GEN_DIR}/include"
    )

    if (${LANG} STREQUAL "ndk")
        set(BINDER_LIB_NAME "libbinder_ndk_sdk")
    else()
        set(BINDER_LIB_NAME "libbinder_sdk")
    endif()
    target_link_libraries(${NAME}
        ${BINDER_LIB_NAME}
    )
endfunction()