perl Makefile.PL lib=/usr/local/lib inc=/usr/include Subroutine checklibs redefined at inc/Module/Install/CheckLib.pm line 11. Subroutine assertlibs redefined at inc/Module/Install/CheckLib.pm line 25. Subroutine _author_side redefined at inc/Module/Install/CheckLib.pm line 39. 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. Debian: sudo aptitude install libssh2-1-dev OpenSUSE: sudo zypper in libssh2-1 libssh2-devel You can pass your libssh2 lib and include dirs on the command line. E.g.: perl Makefile.PL lib=$HOME/libssh2/lib inc=$HOME/libssh2/include If you want to build on Windows, see the file BUILDING.WIN32 in the distribution. Writing Makefile for Net::SSH2 Writing MYMETA.yml and MYMETA.json #### perl Makefile.PL lib=/usr/lib64 inc=/usr/include #### libssh2: libssh2-1.2.2-11.el6_3.x86_64 openssl: openssl-1.0.0-25.el6_3.1.x86_64 zlib: zlib-1.2.3-27.el6.x86_64