HELP~~~ ld: error: undefined symbol: sodium_init

[mscoder1987]

IF ("armeabi-v7a" STREQUAL ${CMAKE_ANDROID_ARCH_ABI})
    target_link_libraries(${SO_NAME} ${CMAKE_CURRENT_LIST_DIR}/libsodium/armeabi-v7a/libsodium.so)
ELSEIF ("arm64-v8a" STREQUAL ${CMAKE_ANDROID_ARCH_ABI})
    target_link_libraries(${SO_NAME} ${CMAKE_CURRENT_LIST_DIR}/libsodium/arm64-v8a/libsodium.so)        #ok
    #target_link_libraries(${SO_NAME} ${CMAKE_CURRENT_LIST_DIR}/libsodium/arm64-v8a/libsodium-static.a)  #error
ELSEIF ("x86" STREQUAL ${CMAKE_ANDROID_ARCH_ABI})
    target_link_libraries(${SO_NAME} ${CMAKE_CURRENT_LIST_DIR}/libsodium/x86/libsodium.so)
ELSEIF ("x86_64" STREQUAL ${CMAKE_ANDROID_ARCH_ABI})
    target_link_libraries(${SO_NAME} ${CMAKE_CURRENT_LIST_DIR}/libsodium/x86_64/libsodium.so)
ENDIF ()

In my NDK project's CMake, there is no issue linking a shared object (.so) dynamic library, but when linking a static library (.a), it gives this error. Is this a bug?