help with pseudo terminal

[net]

i'm trying to execute this line on my cygwin shell

$ echo wew | ssh wew@10.192.30.40

an this is the output
Pseudo-terminal will not be allocated because stdin is not a terminal.

is there something i must know about this

because i also try to compile sshpass packages and got this error

power@kancil ~/sshpass-1.00
$ make
gcc -DHAVE_CONFIG_H -I. -I. -I.     -g -O2 -c main.c
gcc  -g -O2  -o sshpass  main.o
main.o: In function `runprogram':
/home/power/sshpass-1.00/main.c:153: undefined reference to `_getpt'
collect2: ld returned 1 exit status
make: *** [sshpass] Error 1

is there something to do with the pseudo terminal...

thanks

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