undefined reference to `android:mArgC'

/app_main.cpp:121: undefined reference to `android::mArgC'
d:/linux/linuxkernel/WORKING_DIRECTORY/ango/angowx/app_process/app_main.cpp:122: undefined reference to `android::mArgV'
d:/linux/linuxkernel/WORKING_DIRECTORY/ango/angowx/app_process/app_main.cpp:124: undefined reference to `android::mArgLen'
    // These are global variables in ProcessState.cpp
frameworks\base\libs\binder\ProcessState.cpp