Hi, thank you very much for the answer.
This is what perl -V returns:

Summary of my perl5 (revision 5 version 22 subversion 1) configuration
+:
   
  Platform:
    osname=linux, osvers=3.16.0, archname=x86_64-linux-gnu-thread-mult
+i
    uname='linux localhost 3.16.0 #1 smp debian 3.16.0 x86_64 gnulinux
+ '
    config_args='-Dusethreads -Duselargefiles -Dcc=x86_64-linux-gnu-gc
+c -Dcpp=x86_64-linux-gnu-cpp -Dld=x86_64-linux-gnu-gcc -Dccflags=-DDE
+BIAN -Wdate-time -D_FORTIFY_SOURCE=2 -g -O2 -fstack-protector-strong 
+-Wformat -Werror=format-security -Dldflags= -Wl,-Bsymbolic-functions 
+-Wl,-z,relro -Dlddlflags=-shared -Wl,-Bsymbolic-functions -Wl,-z,relr
+o -Dcccdlflags=-fPIC -Darchname=x86_64-linux-gnu -Dprefix=/usr -Dpriv
+lib=/usr/share/perl/5.22 -Darchlib=/usr/lib/x86_64-linux-gnu/perl/5.2
+2 -Dvendorprefix=/usr -Dvendorlib=/usr/share/perl5 -Dvendorarch=/usr/
+lib/x86_64-linux-gnu/perl5/5.22 -Dsiteprefix=/usr/local -Dsitelib=/us
+r/local/share/perl/5.22.1 -Dsitearch=/usr/local/lib/x86_64-linux-gnu/
+perl/5.22.1 -Dman1dir=/usr/share/man/man1 -Dman3dir=/usr/share/man/ma
+n3 -Dsiteman1dir=/usr/local/man/man1 -Dsiteman3dir=/usr/local/man/man
+3 -Duse64bitint -Dman1ext=1 -Dman3ext=3perl -Dpager=/usr/bin/sensible
+-pager -Uafs -Ud_csh -Ud_ualarm -Uusesfio -Uusenm -Ui_libutil -Uversi
+ononly -DDEBUGGING=-g -Doptimize=-O2 -dEs -Duseshrplib -Dlibperl=libp
+erl.so.5.22.1'
    hint=recommended, useposix=true, d_sigaction=define
    useithreads=define, usemultiplicity=define
    use64bitint=define, use64bitall=define, uselongdouble=undef
    usemymalloc=n, bincompat5005=undef
  Compiler:
    cc='x86_64-linux-gnu-gcc', ccflags ='-D_REENTRANT -D_GNU_SOURCE -D
+DEBIAN -fwrapv -fno-strict-aliasing -pipe -I/usr/local/include -D_LAR
+GEFILE_SOURCE -D_FILE_OFFSET_BITS=64',
    optimize='-O2 -g',
    cppflags='-D_REENTRANT -D_GNU_SOURCE -DDEBIAN -fwrapv -fno-strict-
+aliasing -pipe -I/usr/local/include'
    ccversion='', gccversion='5.3.1 20160311', gccosandvers=''
    intsize=4, longsize=8, ptrsize=8, doublesize=8, byteorder=12345678
+, doublekind=3
    d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=1
+6, longdblkind=3
    ivtype='long', ivsize=8, nvtype='double', nvsize=8, Off_t='off_t',
+ lseeksize=8
    alignbytes=8, prototype=define
  Linker and Libraries:
    ld='x86_64-linux-gnu-gcc', ldflags =' -fstack-protector-strong -L/
+usr/local/lib'
    libpth=/usr/local/lib /usr/lib/gcc/x86_64-linux-gnu/5/include-fixe
+d /usr/include/x86_64-linux-gnu /usr/lib /lib/x86_64-linux-gnu /lib/.
+./lib /usr/lib/x86_64-linux-gnu /usr/lib/../lib /lib
    libs=-lgdbm -lgdbm_compat -ldb -ldl -lm -lpthread -lc -lcrypt
    perllibs=-ldl -lm -lpthread -lc -lcrypt
    libc=libc-2.21.so, so=so, useshrplib=true, libperl=libperl.so.5.22
    gnulibc_version='2.21'
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E'
    cccdlflags='-fPIC', lddlflags='-shared -L/usr/local/lib -fstack-pr
+otector-strong'


Characteristics of this binary (from libperl): 
  Compile-time options: HAS_TIMES MULTIPLICITY PERLIO_LAYERS
                        PERL_DONT_CREATE_GVSV
                        PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
                        PERL_IMPLICIT_CONTEXT PERL_MALLOC_WRAP
                        PERL_NEW_COPY_ON_WRITE PERL_PRESERVE_IVUV
                        USE_64_BIT_ALL USE_64_BIT_INT USE_ITHREADS
                        USE_LARGE_FILES USE_LOCALE USE_LOCALE_COLLATE
                        USE_LOCALE_CTYPE USE_LOCALE_NUMERIC USE_LOCALE
+_TIME
                        USE_PERLIO USE_PERL_ATOF USE_REENTRANT_API
  Locally applied patches:
    DEBPKG:debian/cpan_definstalldirs - Provide a sensible INSTALLDIRS
+ default for modules installed from CPAN.
    DEBPKG:debian/db_file_ver - http://bugs.debian.org/340047 Remove o
+verly restrictive DB_File version check.
    DEBPKG:debian/doc_info - Replace generic man(1) instructions with 
+Debian-specific information.
    DEBPKG:debian/enc2xs_inc - http://bugs.debian.org/290336 Tweak enc
+2xs to follow symlinks and ignore missing @INC directories.
    DEBPKG:debian/errno_ver - http://bugs.debian.org/343351 Remove Err
+no version check due to upgrade problems with long-running processes.
    DEBPKG:debian/libperl_embed_doc - http://bugs.debian.org/186778 No
+te that libperl-dev package is required for embedded linking
    DEBPKG:fixes/respect_umask - Respect umask during installation
    DEBPKG:debian/writable_site_dirs - Set umask approproately for sit
+e install directories
    DEBPKG:debian/extutils_set_libperl_path - EU:MM: set location of l
+ibperl.a under /usr/lib
    DEBPKG:debian/no_packlist_perllocal - Don't install .packlist or p
+erllocal.pod for perl or vendor
    DEBPKG:debian/fakeroot - Postpone LD_LIBRARY_PATH evaluation to th
+e binary targets.
    DEBPKG:debian/instmodsh_doc - Debian policy doesn't install .packl
+ist files for core or vendor.
    DEBPKG:debian/ld_run_path - Remove standard libs from LD_RUN_PATH 
+as per Debian policy.
    DEBPKG:debian/libnet_config_path - Set location of libnet.cfg to /
+etc/perl/Net as /usr may not be writable.
    DEBPKG:debian/mod_paths - Tweak @INC ordering for Debian
    DEBPKG:debian/prune_libs - http://bugs.debian.org/128355 Prune the
+ list of libraries wanted to what we actually need.
    DEBPKG:fixes/net_smtp_docs - [rt.cpan.org #36038] http://bugs.debi
+an.org/100195 Document the Net::SMTP 'Port' option
    DEBPKG:debian/perlivp - http://bugs.debian.org/510895 Make perlivp
+ skip include directories in /usr/local
    DEBPKG:debian/deprecate-with-apt - http://bugs.debian.org/747628 P
+oint users to Debian packages of deprecated core modules
    DEBPKG:debian/squelch-locale-warnings - http://bugs.debian.org/508
+764 Squelch locale warnings in Debian package maintainer scripts
    DEBPKG:debian/skip-upstream-git-tests - Skip tests specific to the
+ upstream Git repository
    DEBPKG:debian/patchlevel - http://bugs.debian.org/567489 List pack
+aged patches for 5.22.1-9 in patchlevel.h
    DEBPKG:debian/skip-kfreebsd-crash - http://bugs.debian.org/628493 
+[perl #96272] Skip a crashing test case in t/op/threads.t on GNU/kFre
+eBSD
    DEBPKG:fixes/document_makemaker_ccflags - http://bugs.debian.org/6
+28522 [rt.cpan.org #68613] Document that CCFLAGS should include $Conf
+ig{ccflags}
    DEBPKG:debian/find_html2text - http://bugs.debian.org/640479 Confi
+gure CPAN::Distribution with correct name of html2text
    DEBPKG:debian/perl5db-x-terminal-emulator.patch - http://bugs.debi
+an.org/668490 Invoke x-terminal-emulator rather than xterm in perl5db
+.pl
    DEBPKG:debian/cpan-missing-site-dirs - http://bugs.debian.org/6888
+42 Fix CPAN::FirstTime defaults with nonexisting site dirs if a paren
+t is writable
    DEBPKG:fixes/memoize_storable_nstore - [rt.cpan.org #77790] http:/
+/bugs.debian.org/587650 Memoize::Storable: respect 'nstore' option no
+t respected
    DEBPKG:debian/regen-skip - Skip a regeneration check in unrelated 
+git repositories
    DEBPKG:debian/makemaker-pasthru - http://bugs.debian.org/758471 Pa
+ss LD settings through to subdirectories
    DEBPKG:fixes/pod_man_reproducible_date - http://bugs.debian.org/75
+9405 Support POD_MAN_DATE in Pod::Man for the left-hand footer
    DEBPKG:debian/locale-robustness - http://bugs.debian.org/782068 [p
+erl #124310] Make t/run/locale.t survive missing locales masked by LC
+_ALL
    DEBPKG:fixes/podman-utc - http://bugs.debian.org/780259 Make the e
+mbedded date from Pod::Man reproducible
    DEBPKG:fixes/podman-utc-docs - http://bugs.debian.org/780259 Docum
+entation and test suite updates for UTC fix
    DEBPKG:fixes/podman-empty-date - http://bugs.debian.org/780259 Sup
+port an empty POD_MAN_DATE environment variable
    DEBPKG:fixes/podman-pipe - http://bugs.debian.org/777405 Better er
+rors for man pages from standard input
    DEBPKG:debian/pod2man-customized - Update porting/customized.dat f
+or pod2man modifications
    DEBPKG:debian/makemaker-manext - http://bugs.debian.org/247370 Mak
+e EU::MakeMaker honour MANnEXT settings in generated manpage headers
    DEBPKG:debian/makemaker_customized - Update t/porting/customized.d
+at for files patched in Debian
    DEBPKG:debian/do-not-record-build-date - [6baa8db] http://bugs.deb
+ian.org/774422 [perl #125830] Allow overriding the compile time in "p
+erl -V" output
    DEBPKG:fixes/podman-source-date-epoch - http://bugs.debian.org/801
+621 Make Pod::Man honor the SOURCE_DATE_EPOCH environment variable
    DEBPKG:fixes/podman-source-date-epoch-cleanups - http://bugs.debia
+n.org/801621 Coding style and documentation for SOURCE_EPOCH_DATE
    DEBPKG:fixes/podman-source-date-epoch-testfix - http://bugs.debian
+.org/807086 Guard for building with SOURCE_DATE_EPOCH or POD_MAN_DATE
+ set
    DEBPKG:debian/devel-ppport-reproducibility - http://bugs.debian.or
+g/801523 Sort the list of XS code files when generating RealPPPort.xs
    DEBPKG:fixes/encode-unicode-bom - http://bugs.debian.org/798727 [r
+t.cpan.org #107043] Address https://rt.cpan.org/Public/Bug/Display.ht
+ml?id=107043
    DEBPKG:debian/encode-unicode-bom-doc - http://bugs.debian.org/7987
+27 Document Debian backport of Encode::Unicode fix
    DEBPKG:debian/kfreebsd-softupdates - http://bugs.debian.org/796798
+ Work around Debian Bug#796798
    DEBPKG:fixes/autodie-scope - http://bugs.debian.org/798096 Fix a s
+coping issue with "no autodie" and the "system" sub
    DEBPKG:debian/debugperl-compat-fix - [perl #127212] http://bugs.de
+bian.org/810326 Disable PERL_TRACK_MEMPOOL for debugging builds
    DEBPKG:fixes/CVE-2015-8607_file_spec_taint_fix - http://bugs.debia
+n.org/810719 [perl #126862] ensure File::Spec::canonpath() preserves 
+taint
    DEBPKG:fixes/mkstemp-umask - http://bugs.debian.org/810924 [perl #
+127322] [e57270b] Fix umask for mkstemp(3) calls
    DEBPKG:fixes/crosscompile-no-targethost - [perl #127234] Fix the C
+onfigure escape with usecrosscompile but no targethost
    DEBPKG:fixes/podlators-no-encode - [rt.cpan.org #111156] Degrade g
+racefully if utf8 is requested but Encode is not available
    DEBPKG:debian/cross-time-hires - [rt.cpan.org #111391] Add an envi
+ronment variable to skip running configuration probes
    DEBPKG:fixes/encode-unicode-pod - Unicode.pm: Fix POD error
    DEBPKG:fixes/memoize-pod - [rt.cpan.org #89441] Fix POD errors in 
+Memoize
    DEBPKG:fixes/ok-pod - Added encoding for pod.
    DEBPKG:fixes/CVE-2016-2381_duplicate_env - remove duplicate enviro
+nment variables from environ
  Built under linux
  Compiled at Mar 13 2016 11:54:18
  @INC:
    /etc/perl
    /usr/local/lib/x86_64-linux-gnu/perl/5.22.1
    /usr/local/share/perl/5.22.1
    /usr/lib/x86_64-linux-gnu/perl5/5.22
    /usr/share/perl5
    /usr/lib/x86_64-linux-gnu/perl/5.22
    /usr/share/perl/5.22
    /usr/local/lib/site_perl
    /usr/lib/x86_64-linux-gnu/perl-base
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