question about NTP

hi,I want to use NTP to synchronize my PCs(linux and windows) from qnx,and
also I have downloaded the software ntp.tar from www.qnx.com. when i want to
build my NTP like this(just as described in readme):

1 zcat qnx-ntp.tgz | tar -xvof -
(this has done,and I have got three files:
qnx-ntp/readme
qnx-ntp/ntp.patch
qnx-ntp/ntp.tar

2 mkdir ntp(done)

3 cd ntp

4 tar -xvof …/ntp.tar(done)

5 patch -p <…/qnx-ntp.patch

system tells me:“patch not found”
or
“can’t find the file or directory”

why?and how to do?

Is there any one has ever built own NTP ?
can you give me the procedure in detail?

thanks!

http://developers.qnx.com/Ports/patch-2.5.4-x86-qnx.qpr

summer <gpjin@nairc.ac.cn> wrote:
[…]

system tells me:“patch not found”
or
“can’t find the file or directory”

why?and how to do?