add_definitions(-DUNIX)
add_definitions(-DPOSIX)
if(${CMAKE_SYSTEM_NAME} MATCHES "Linux")
    get_filename_component(LIBTUNTAP_IMPL ${TT_ROOT}/tuntap-unix-linux.c ABSOLUTE)
    get_filename_component(EV_SRC "llarp/ev/ev_epoll.cpp" ABSOLUTE)
elseif(${CMAKE_SYSTEM_NAME} MATCHES "Android")
get_filename_component(LIBTUNTAP_IMPL ${TT_ROOT}/tuntap-unix-linux.c ABSOLUTE)
    get_filename_component(EV_SRC "llarp/ev/ev_epoll.cpp" ABSOLUTE)
elseif (${CMAKE_SYSTEM_NAME} MATCHES "OpenBSD")
    set(LIBTUNTAP_IMPL ${TT_ROOT}/tuntap-unix-openbsd.c ${TT_ROOT}/tuntap-unix-bsd.c)
    get_filename_component(EV_SRC "llarp/ev/ev_kqueue.cpp" ABSOLUTE)
elseif (${CMAKE_SYSTEM_NAME} MATCHES "NetBSD")
    set(LIBTUNTAP_IMPL ${TT_ROOT}/tuntap-unix-netbsd.c ${TT_ROOT}/tuntap-unix-bsd.c)
    get_filename_component(EV_SRC "llarp/ev/ev_kqueue.cpp" ABSOLUTE)
elseif (${CMAKE_SYSTEM_NAME} MATCHES "FreeBSD" OR ${CMAKE_SYSTEM_NAME} MATCHES "DragonFly")
    set(LIBTUNTAP_IMPL ${TT_ROOT}/tuntap-unix-freebsd.c ${TT_ROOT}/tuntap-unix-bsd.c)
    get_filename_component(EV_SRC "llarp/ev/ev_kqueue.cpp" ABSOLUTE)
elseif (${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
    set(LIBTUNTAP_IMPL ${TT_ROOT}/tuntap-unix-darwin.c ${TT_ROOT}/tuntap-unix-bsd.c)
    get_filename_component(EV_SRC "llarp/ev/ev_kqueue.cpp" ABSOLUTE)
elseif (${CMAKE_SYSTEM_NAME} MATCHES "SunOS")
    set(LIBTUNTAP_IMPL ${TT_ROOT}/tuntap-unix-sunos.c)
    if (SOLARIS_HAVE_EPOLL)
    get_filename_component(EV_SRC "llarp/ev/ev_epoll.cpp" ABSOLUTE)
    else()
    get_filename_component(EV_SRC "llarp/ev/ev_sun.cpp" ABSOLUTE)
    endif()
else()
    message(FATAL_ERROR "Your operating system is not supported yet")
endif()