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  • 1.  perl cpan install can't find library z

    Posted Tue August 08, 2023 11:06 AM

    Dear team, dear community.

    we were trying to install NET-SSH2 module for perl using cpan and we got following output:

    cpan[1]> install Net::SSH2
Reading '/root/.cpan/Metadata'
  Database was generated on Tue, 08 Aug 2023 02:54:01 GMT
Running install for module 'Net::SSH2'
Checksum for /root/.cpan/sources/authors/id/R/RK/RKITOVER/Net-SSH2-0.73.tar.gz ok
Scanning cache /root/.cpan/build for sizes
............................................................................DONE
'YAML' not installed, will not store persistent state
Configuring R/RK/RKITOVER/Net-SSH2-0.73.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, use the crypto_backend
option when calling Makefile.PL, e.g.:

    perl Makefile.PL crypto_backend=gcrypt

Looking for libraries...
Analyzing file assertlibntl_xkuW
Library ssh2 found in standard place
Detected crypto backend: openssl
crypto backend set to openssl
Unable to find a working version of library z in the following directories:
  /opt/freeware/lib
  /usr/lib
  /usr/ccs/lib
  /usr/lib64
  /opt/freeware
  /usr
  /usr/local
  /opt
  /opt/local
  /usr/local/libssh2
  /opt/libssh2
  /usr/local/ssl
  /root
  /root/libssh2
Warning: No success on command[/opt/freeware/bin/perl Makefile.PL]
  RKITOVER/Net-SSH2-0.73.tar.gz
  /opt/freeware/bin/perl Makefile.PL -- NOT OK
Failed during this command:
RKITOVER/Net-SSH2-0.73.tar.gz                : writemakefile NO '/opt/freeware/bin/perl Makefile.PL' returned status 512

    Unable to find a working version of library z, even libz is installed as rpm and lpp:

    :/root#rpm -qa | grep libz
libzstd-1.5.2-2.ppc
libzstd-devel-1.5.2-2.ppc

    and

    :/root#lslpp -L | grep zlib
  zlib                      1.2.13-1    C     R    The zlib compression and

    and lib file could be found in /opt/freeware/lib

    :/root#ll /opt/freeware/lib/libz*
-rw-r--r--    1 root     system       699406 Dec  1 2022  /opt/freeware/lib/libz.a
-rw-r--r--    1 root     system      3030179 Mar 15 16:55 /opt/freeware/lib/libzck.a
-rwxr-xr-x    1 root     system     84154189 Sep  1 2021  /opt/freeware/lib/libzmq.a
-rwxr-xr-x    1 root     system     41360692 Sep  1 2021  /opt/freeware/lib/libzmq.so.5
-rw-r--r--    1 root     system      4554279 Feb  5 2023  /opt/freeware/lib/libzstd.a

    Any suggestions what we could do to make it work?

    Many thanks in advance...

    kind regards



    ------------------------------
    Joerg Kauke
    Unix Administrator
    COOP Switzerland
    ------------------------------


  • 2.  RE: perl cpan install can't find library z

    Posted Wed August 09, 2023 05:51 AM

    Hello,

    you need to install "libssh2-devel", and the files /usr/lib/libssl.so and /usr/lib/libcrypto.so should not exist.

    Kind regards



    ------------------------------
    Josef Walzer
    ------------------------------

    Original Message


  • 3.  RE: perl cpan install can't find library z

    Posted Wed August 09, 2023 07:00 AM

    Hello Josef,

    thanks for the hint. libssh2-devel is already installed. Now I move the /usr/lib/libssl.so and /usr/lib/libcrypto.so but it is still the same error message "can't find library z"

    kind regards,



    ------------------------------
    Joerg Kauke
    Unix Administrator
    COOP Switzerland
    ------------------------------

    Original Message


  • 4.  RE: perl cpan install can't find library z

    Posted Thu August 10, 2023 12:33 PM

    Hi Joerg,

    Please install zlib-devel rpm package and retry.



    ------------------------------
    SANGAMESH
    ------------------------------

    Original Message


  • 5.  RE: perl cpan install can't find library z

    Posted Fri August 11, 2023 02:05 AM

    Hello Sangamesh,

    thanks for the hint. I must have overseen this...
    I installed the zlib-devel now and we will test it later.

    kind regards.



    ------------------------------
    Joerg Kauke
    Unix Administrator
    COOP Switzerland
    ------------------------------

    Original Message