note nikhilrai Thanks everyone for your replies. I am trying to install Net::SSH2 module now on windows 2008 R2 OS. As per the instruction provided in the building guide for Win32, I am kind of stuck in step which build libssh2. BUILDING_WIN32 document suggests the following approach for building libssh2: <code> ============================================================ * Build libssh2 Download the latest libssh2 from: http://libssh2.org/ Unpack it and go into it: tar zxvf libssh2-1.4.2.tar.gz cd libssh2-1.4.2 Note the directories where you built OpenSSL and zlib, I will use mine in the following example. Build libssh2: ./buildconf ./configure --with-openssl --with-libz \ --with-libssl-prefix=/c/Users/rkitover/src/openssl-1.0.1c \ --with-libz-prefix=/c/Users/rkitover/src/zlib-1.2.7 \ --disable-examples-build make -j3 The libssh2.a will be in src/.libs . =========================================================== </code> when I try to perform ./buildconf on CMD prompt shell, I ended up with below error: <code> C:\libssh2-1.4.2>sh buildconf which: libtoolize: unknown command which: glibtoolize: unknown command Neither libtoolize nor glibtoolize could be found! </code> Later I manually intalled libtooltize tool using 'libtool-1.5.26-setup.exe' and now ending up with below error: <code> C:\libssh2-1.4.2>sh buildconf buildconf: line 15: aclocal: command not found buildconf: line 16: autoheader: command not found buildconf: line 21: autoconf: command not found buildconf: line 22: automake: command not found C:\libssh2-1.4.2> </code> I tried installing autoconf and automake similarly but again ending up with multiple compilations issues. Can anyone suggest how to overcome this issue? MinGw and MinGW_64 is already configured on host and running fine. I've successfully done all the previous steps as suggested in http://cpansearch.perl.org/src/RKITOVER/Net-SSH2-0.45/README document Thanks, Nikhil. 998371 998390