lib ssh2 Installation problem

Hi
I am unable to install the lib ssh2. I am getting the following errors while installing it. I am currently having Windows xp OS, i am using cygwin to install this.  I am using the libssh2-0.18 version.

ssh2.o:ssh2.c:(.text+0x147): undefined reference to `__imp__libssh2_session_init_ex'
ssh2.o:ssh2.c:(.text+0x15e): undefined reference to `__imp__libssh2_session_startup'
ssh2.o:ssh2.c:(.text+0x19b): undefined reference to `__imp__libssh2_hostkey_hash'
ssh2.o:ssh2.c:(.text+0x22e): undefined reference to `__imp__libssh2_userauth_password_ex'
ssh2.o:ssh2.c:(.text+0x27f): undefined reference to `__imp__libssh2_userauth_publickey_fromfile_ex'
ssh2.o:ssh2.c:(.text+0x2d1): undefined reference to `__imp__libssh2_channel_open_ex'
ssh2.o:ssh2.c:(.text+0x324): undefined reference to `__imp__libssh2_channel_setenv_ex'
ssh2.o:ssh2.c:(.text+0x371): undefined reference to `__imp__libssh2_channel_request_pty_ex'
ssh2.o:ssh2.c:(.text+0x3bc): undefined reference to `__imp__libssh2_channel_process_startup'
ssh2.o:ssh2.c:(.text+0x3ed): undefined reference to `__imp__libssh2_channel_free'
ssh2.o:ssh2.c:(.text+0x419): undefined reference to `__imp__libssh2_session_disconnect_ex'
ssh2.o:ssh2.c:(.text+0x426): undefined reference to `__imp__libssh2_session_free'
collect2: ld returned 1 exit status
Make[2]: *** [ssh2.exe] Error 1
Make[2]: Leaving directory `/cygdrive/c/perl_test/perl_module/libssh2-0.15/example/simple'
Make[1]: *** [all-recursive] Error 1
Make[1]: Leaving directory `/cygdrive/c/perl_test/perl_module/libssh2-0.15/example'
Make: *** [all-recursive] Error 1

can any body know how to install it with out errors.