Configuring R/RK/RKITOVER/Net-SSH2-0.71.tar.gz with Makefile.PL

The libssh2 library is required by this module.  If you don't have it, you can
download it from http://www.libssh2.org; you may also need OpenSSL, which can
be obtained from http://www.openssl.org , or libgcrypt, which can be obtained
from http://www.gnupg.org .

Debian:   sudo aptitude install libssh2-1-dev
OpenSUSE: sudo zypper in libssh2-1 libssh2-devel

You can pass your libssh2 lib and include dirs (and extra link args) on the
command line. E.g.:

    perl Makefile.PL lib=$HOME/libssh2/lib inc=$HOME/libssh2/include \
        ldargs="-lz"

These can also be set through the LIBSSH2_LIB/LIBSSH2_INCLUDE/LIBSSH2_LDARGS
environment variables.

To build with libgcrypt instead of OpenSSL, pass 'gcrypt' as a parameter to
Makefile.PL, e.g.:

    perl Makefile.PL gcrypt

Looking for libraries...
Analyzing file assertlibMf9bpvzG.exe
Unable to find a working version of library z in the following directories:
  C:\strawberry\perl\site
  C:\strawberry\perl
  /usr
  /usr/local
  /opt
  /opt/local
  /usr/local/libssh2
  /opt/libssh2
  /usr/local/ssl
Warning: No success on command[C:\strawberry\perl\bin\perl.exe Makefile.PL]
  RKITOVER/Net-SSH2-0.71.tar.gz
  C:\strawberry\perl\bin\perl.exe Makefile.PL -- NOT OK
Stopping: 'install' failed for 'Net::SSH2'.
Failed during this command:
 RKITOVER/Net-SSH2-0.71.tar.gz                : writemakefile NO 'C:\strawberry\perl\bin\perl.exe Makefile.PL' returned status 512