how install on windows 7 ?

[221V]

hello

i have no trouble on linux with fann + erlang
(there i get executable file "fannerl" in fannerl/priv and all is ok)

but i do not fully understand how install fann on windows 7

i install visual studio community 2019, install c++ there, install erlang, this is ok
next i choose VS2010 directory inside fann_dir, open the fann.sln solution, click "build" in VS

visual studio says all ok, compiling ok

but i do not understand what next?
help me please

after compiling fann i see next dll --

E:\fann_2.2.0\bin

fanndouble.dll
fanndoubled.dll
fannfixed.dll
fannfixedd.dll
fannfloat.dll
fannfloatd.dll

what of thet needs for erlang in

E:\fannerl\src\fannerl.erl
at line 1584 --
PrivDir = code:priv_dir(fannerl),

?

fannerl in erlang compiles fine --

E:\fannerl>rebar3 compile
===> Verifying dependencies...
===> Compiling fannerl

but tests not run ok

E:\fannerl>rebar3 eunit
===> Verifying dependencies...
===> Compiling fannerl
===> Performing EUnit tests...
======================== EUnit ========================
file "fannerl.app"
  application 'fannerl'
    module 'fannerl'
      module 'fannerl_tests'
        Tests that fannerl can be started and stopped accordingly
          fannerl_tests: fannerl_start_stop_test_...=CRASH REPORT==== 8-May-2019::02:09:04.701000 ===
  crasher:
    initial call: fannerl:init/1
    pid: <0.139.0>
    registered_name: fannerl
    exception error: enoent
      in function  open_port/2
         called as open_port({spawn,"e:\fannerl\priv"},
                             [{packet,2},nouse_stdio,binary,exit_status])
      in call from fannerl:init/1 (e:/fannerl/src/fannerl.erl, line 1604)
    ancestors: [<0.130.0>]
    message_queue_len: 0
    messages: []
    links: [<0.130.0>]
    dictionary: []
    trap_exit: true
    status: running
    heap_size: 376
    stack_size: 27
    reductions: 225
  neighbours:
    neighbour:
      pid: <0.134.0>
      registered_name: []
      initial_call: {eunit_proc,group_leader_process,1}
      current_function: {eunit_proc,group_leader_loop,3}
      ancestors: []
      message_queue_len: 0
      links: [<0.130.0>]
      trap_exit: false
      status: waiting
      heap_size: 233
      stack_size: 7
      reductions: 11
      current_stacktrace: [{eunit_proc,group_leader_loop,3,
                              [{file,"eunit_proc.erl"},{line,584}]}]
    neighbour:
      pid: <0.130.0>
      registered_name: []
      initial_call: {erlang,apply,2}
      current_function: {proc_lib,sync_wait,2}
      ancestors: []
      message_queue_len: 0
      links: [<0.134.0>,<0.139.0>,<0.129.0>]
      trap_exit: false
      status: waiting
      heap_size: 6772
      stack_size: 91
      reductions: 8752
      current_stacktrace: [{proc_lib,sync_wait,2,[{file,"proc_lib.erl"},{line,350}]},
                  {fannerl_tests,fannerl_start_stop,0,
                                 [{file,"e:/fannerl/test/fannerl_tests.erl"},
                                  {line,165}]},
                  {eunit_test,run_testfun,1,
                              [{file,"eunit_test.erl"},{line,71}]},
                  {eunit_proc,run_test,1,[{file,"eunit_proc.erl"},{line,510}]},
                  {eunit_proc,with_timeout,3,
                              [{file,"eunit_proc.erl"},{line,335}]},
                  {eunit_proc,handle_test,2,
                              [{file,"eunit_proc.erl"},{line,493}]},
                  {eunit_proc,tests_inorder,3,
                              [{file,"eunit_proc.erl"},{line,435}]},
                  {eunit_proc,with_timeout,3,
                              [{file,"eunit_proc.erl"},{line,325}]}]
*skipped*
undefined
*unexpected termination of test process*
::{enoent,[{erlang,open_port,
                   [{spawn,"e:\fannerl\priv"},
                    [{packet,2},nouse_stdio,binary,exit_status]],
                   [{file,"erlang.erl"},{line,2213}]},
           {fannerl,init,1,[{file,"e:/fannerl/src/fannerl.erl"},{line,1604}]},
           {proc_lib,init_p_do_apply,3,[{file,"proc_lib.erl"},{line,249}]}]}

=======================================================
  Failed: 0.  Skipped: 0.  Passed: 0.
One or more tests were cancelled.
===> Error running tests

help me please
thanks