title: Can't locate Data/Dumper.pm when building dssp - perl is installed but cannot be found?
body: <p>I am trying to build dssp (<a href="https://github.com/cmbi/dssp" rel="nofollow noreferrer">https://github.com/cmbi/dssp</a>) on a server-node (not on server-login), and I am facing a problem with how the system finds dependencies. I am working on a centos 7.</p>
  <p>The procedure of building dssp is : <code>run ./autogen</code> to get a <code>configure.sh</code> file and then execute that one. Then run <code>make</code>.</p>
  <p>Running <code>whereis perl</code> and <code>whereis perl5</code> I get:</p>
  <pre class="lang-none prettyprint-override"><code>[mavridks@haswell-182 dssp-2.3.0]$ whereis perl
  perl: /usr/bin/perl /usr/share/man/man1/perl.1.gz
  
  [mavridks@haswell-182 dssp-2.3.0]$ whereis perl5
  perl5: /usr/lib64/perl5 /usr/share/perl5
  </code></pre>
  <p>Then, running <code>./autogen</code> I get the error:</p>
  <pre class="lang-none prettyprint-override"><code>Can't locate Data/Dumper.pm in @INC
     (@INC contains:
     /hits/sw/shared/apps/Autoconf/2.69-GCC-4.8.4/share/autoconf
     /usr/local/lib64/perl5
     /usr/local/share/perl5 
     /usr/lib64/perl5/vendor_perl
     /usr/share/perl5/vendor_perl
     /usr/lib64/perl5
     /usr/share/perl5 
     .)
     at /hits/sw/shared/apps/Autoconf/2.69-GCC-4.8.4/share/autoconf/Autom4te/C4che.pm line 33.
  BEGIN failed--compilation aborted
     at /hits/sw/shared/apps/Autoconf/2.69-GCC-4.8.4/share/autoconf/Autom4te/C4che.pm line 33.
  Compilation failed in require
     at /hits/sw/shared/apps/Autoconf/2.69-GCC-4.8.4/bin/autom4te line 37.
  BEGIN failed--compilation aborted
     at /hits/sw/shared/apps/Autoconf/2.69-GCC-4.8.4/bin/autom4te line 37.
  aclocal: error: echo failed with exit status: 2
  </code></pre>
  <p>(Line breaks added for readability.)</p>
  <p>It seems to me that this error when <code>autoconf</code> is called has something to do with not locating correctly the Perl files or having more paths than it should? Another thought would be that I don't have root privileges on the server and that perhaps this creates a problem?</p>
  <p>Any ideas or suggestions are welcomed.</p>
  <p>NOTE:
  The server uses a module system to load various dependencies. I need Autotools and Boost. The module I am using, if this is something of importance, are</p>
  <pre class="lang-none prettyprint-override"><code>[mavridks@haswell-182 dssp-2.3.0]$ module list
  
  Currently Loaded Modules:
  1) numactl/.2.0.10-GCC-4.8.4 (H)
  2) hwloc/.1.10.1-GCC-4.8.4 (H)
  3) OpenMPI/1.8.4-GCC-4.8.4
  4) OpenBLAS/0.2.13-GCC-4.8.4-LAPACK-3.5.0
  5) gompi/1.7.20                                                
  6) FFTW/3.3.4-gompi-1.7.20                                    
  7) ScaLAPACK/2.0.2-gompi-1.7.20-OpenBLAS-0.2.13-LAPACK-3.5.0
  8) goolf/1.7.20
  9) bzip2/.1.0.6-goolf-1.7.20 (H)
  10) zlib/.1.2.8-goolf-1.7.20 (H)
  11) Boost/1.58.0-goolf-1.7.20
  12) slurm/18-08-4-1-hits
  13) GCC/4.8.4
  14) gcc/dummy
  15) sge/dummy            
  16) M4/1.4.17-GCC-4.8.4
  17) Autoconf/2.69-GCC-4.8.4
  18) Automake/1.15-GCC-4.8.4
  19) libtool/2.4.6-GCC-4.8.4
  20) Autotools/20150215-GCC-4.8.4
  
  Where:
  H:  Hidden Module
  </code></pre>
  <hr />
  <p>EDIT:</p>
  <p>After the comment of  Håkon Hægland I get:</p>
  <pre class="lang-none prettyprint-override"><code>[mavridks@haswell-005 ~]$ perl --version | grep 'This is'
  This is perl 5, version 30, subversion 0 (v5.30.0) built for x86_64-linux-thread-multi
  
  [mavridks@haswell-005 ~]$ perl -MData::Dumper -E 'say $INC{&quot;Data/Dumper.pm&quot;}'
  /hits/sw/shared/apps/Perl/5.30.0-GCCcore-8.3.0/lib/perl5/5.30.0/x86_64-linux-thread-multi/Data/Dumper.pm
  </code></pre>
  <hr />
  <p>EDIT 2:
  Here is the result after re-running the <code>./autogen</code></p>
  <pre class="lang-none prettyprint-override"><code>[mavridks@haswell-112 dssp-2.3.0]
  $ PERL5LIB=/hits/sw/shared/apps/Perl/5.30.0-GCCcore-8.3.0/lib/perl5/5.30.0 ./autogen.sh
  /hits/sw/shared/apps/Automake/1.15-GCC-4.8.4/bin/aclocal:
     Perl lib version (5.30.0) doesn't match executable '/usr/bin/perl' version (5.16.3)
     at /hits/sw/shared/apps/Perl/5.30.0-GCCcore-8.3.0/lib/perl5/5.30.0/x86_64-linux-thread-multi/Config.pm line 62.
  Compilation failed in require
     at /hits/sw/shared/apps/Automake/1.15-GCC-4.8.4/share/automake-1.15/Automake/Config.pm line 41.
  BEGIN failed--compilation aborted
     at /hits/sw/shared/apps/Automake/1.15-GCC-4.8.4/share/automake-1.15/Automake/Config.pm line 41.
  Compilation failed in require
     at /hits/sw/shared/apps/Automake/1.15-GCC-4.8.4/bin/aclocal line 37.
  BEGIN failed--compilation aborted
     at /hits/sw/shared/apps/Automake/1.15-GCC-4.8.4/bin/aclocal line 37.
  </code></pre>
  <p>(Line breaks added for readability.)</p>
  <p>EDIT 3:</p>
  <p>After a lot of helpful comments and an answer I am adding some more info:</p>
  <ol>
  <li><p>First one connects to the server login-node. Running whereis perl gives:</p>
  <p>[mavridks@haswell-login ~]$ whereis perl</p>
  <p>perl: /usr/bin/perl /usr/share/man/man1/perl.1.gz</p>
  </li>
  </ol>
  <p>and also, running</p>
  <pre><code>[mavridks@haswell-login ~]$ perl --version
  
  This is perl 5, version 16, subversion 3 (v5.16.3) built for x86_64- 
  linux-thread-multi
  (with 39 registered patches, see perl -V for more detail)
  </code></pre>
  <p>.Finally one gets:</p>
  <pre><code>[mavridks@haswell-login ~]$ perl -MData::Dumper -E 'say 
  $INC{&quot;Data/Dumper.pm&quot;}'
  /usr/lib64/perl5/vendor_perl/Data/Dumper.pm
  </code></pre>
  <p>Side-note: What do we get running perl -V?</p>
  <p>a) On the login-node:</p>
  <pre><code>[mavridks@haswell-login ~]$ perl -V
  Summary of my perl5 (revision 5 version 16 subversion 3) configuration:
     
    Platform:
      osname=linux, osvers=3.10.0-693.17.1.el7.x86_64, archname=x86_64-linux-thread-multi
      uname='linux x86-01.bsys.centos.org 3.10.0-693.17.1.el7.x86_64 #1 smp thu jan 25 20:13:58 utc 2018 x86_64 x86_64 x86_64 gnulinux '
      config_args='-des -Doptimize=-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches   -m64 -mtune=generic -Dccdlflags=-Wl,--enable-new-dtags -Dlddlflags=-shared -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches   -m64 -mtune=generic -Wl,-z,relro  -DDEBUGGING=-g -Dversion=5.16.3 -Dmyhostname=localhost -Dperladmin=root@localhost -Dcc=gcc -Dcf_by=Red Hat, Inc. -Dprefix=/usr -Dvendorprefix=/usr -Dsiteprefix=/usr/local -Dsitelib=/usr/local/share/perl5 -Dsitearch=/usr/local/lib64/perl5 -Dprivlib=/usr/share/perl5 -Dvendorlib=/usr/share/perl5/vendor_perl -Darchlib=/usr/lib64/perl5 -Dvendorarch=/usr/lib64/perl5/vendor_perl -Darchname=x86_64-linux-thread-multi -Dlibpth=/usr/local/lib64 /lib64 /usr/lib64 -Duseshrplib -Dusethreads -Duseithreads -Dusedtrace=/usr/bin/dtrace -Duselargefiles -Dd_semctl_semun -Di_db -Ui_ndbm -Di_gdbm -Di_shadow -Di_syslog -Dman3ext=3pm -Duseperlio -Dinstallusrbinperl=n -Ubincompat5005 -Uversiononly -Dpager=/usr/bin/less -isr -Dd_gethostent_r_proto -Ud_endhostent_r_proto -Ud_sethostent_r_proto -Ud_endprotoent_r_proto -Ud_setprotoent_r_proto -Ud_endservent_r_proto -Ud_setservent_r_proto -Dscriptdir=/usr/bin -Dusesitecustomize'
      hint=recommended, useposix=true, d_sigaction=define
      useithreads=define, usemultiplicity=define
      useperlio=define, d_sfio=undef, uselargefiles=define, usesocks=undef
      use64bitint=define, use64bitall=define, uselongdouble=undef
      usemymalloc=n, bincompat5005=undef
    Compiler:
      cc='gcc', ccflags ='-D_REENTRANT -D_GNU_SOURCE -fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64',
      optimize='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic',
      cppflags='-D_REENTRANT -D_GNU_SOURCE -fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include'
      ccversion='', gccversion='4.8.5 20150623 (Red Hat 4.8.5-36)', gccosandvers=''
      intsize=4, longsize=8, ptrsize=8, doublesize=8, byteorder=12345678
      d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=16
      ivtype='long', ivsize=8, nvtype='double', nvsize=8, Off_t='off_t', lseeksize=8
      alignbytes=8, prototype=define
    Linker and Libraries:
      ld='gcc', ldflags =' -fstack-protector'
      libpth=/usr/local/lib64 /lib64 /usr/lib64
      libs=-lresolv -lnsl -lgdbm -ldb -ldl -lm -lcrypt -lutil -lpthread -lc -lgdbm_compat
      perllibs=-lresolv -lnsl -ldl -lm -lcrypt -lutil -lpthread -lc
      libc=, so=so, useshrplib=true, libperl=libperl.so
      gnulibc_version='2.17'
    Dynamic Linking:
      dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,--enable-new-dtags -Wl,-rpath,/usr/lib64/perl5/CORE'
      cccdlflags='-fPIC', lddlflags='-shared -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic -Wl,-z,relro '
  
  
  Characteristics of this binary (from libperl): 
    Compile-time options: HAS_TIMES MULTIPLICITY PERLIO_LAYERS
                          PERL_DONT_CREATE_GVSV PERL_IMPLICIT_CONTEXT
                          PERL_MALLOC_WRAP 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_PERLIO USE_PERL_ATOF
                          USE_REENTRANT_API USE_SITECUSTOMIZE
    Locally applied patches:
      Fedora Patch1: Removes date check, Fedora/RHEL specific
      Fedora Patch3: support for libdir64
      Fedora Patch4: use libresolv instead of libbind
      Fedora Patch5: USE_MM_LD_RUN_PATH
      Fedora Patch6: Skip hostname tests, due to builders not being network capable
      Fedora Patch7: Dont run one io test due to random builder failures
      Fedora Patch9: Fix find2perl to translate ? glob properly (RT#113054)
      Fedora Patch10: Fix broken atof (RT#109318)
      Fedora Patch13: Clear $@ before &quot;do&quot; I/O error (RT#113730)
      Fedora Patch14: Do not truncate syscall() return value to 32 bits (RT#113980)
      Fedora Patch15: Override the Pod::Simple::parse_file (CPANRT#77530)
      Fedora Patch16: Do not leak with attribute on my variable (RT#114764)
      Fedora Patch17: Allow operator after numeric keyword argument (RT#105924)
      Fedora Patch18: Extend stack in File::Glob::glob, (RT#114984)
      Fedora Patch19: Do not crash when vivifying $|
      Fedora Patch20: Fix misparsing of maketext strings (CVE-2012-6329)
      Fedora Patch21: Add NAME headings to CPAN modules (CPANRT#73396)
      Fedora Patch22: Fix leaking tied hashes (RT#107000) [1]
      Fedora Patch23: Fix leaking tied hashes (RT#107000) [2]
      Fedora Patch24: Fix leaking tied hashes (RT#107000) [3]
      Fedora Patch25: Fix dead lock in PerlIO after fork from thread (RT#106212)
      Fedora Patch26: Make regexp safe in a signal handler (RT#114878)
      Fedora Patch27: Update h2ph(1) documentation (RT#117647)
      Fedora Patch28: Update pod2html(1) documentation (RT#117623)
      Fedora Patch29: Document Math::BigInt::CalcEmu requires Math::BigInt (CPAN RT#85015)
      RHEL Patch30: Use stronger algorithm needed for FIPS in t/op/crypt.t (RT#121591)
      RHEL Patch31: Make *DBM_File desctructors thread-safe (RT#61912)
      RHEL Patch32: Use stronger algorithm needed for FIPS in t/op/taint.t (RT#123338)
      RHEL Patch33: Remove CPU-speed-sensitive test in Benchmark test
      RHEL Patch34: Make File::Glob work with threads again
      RHEL Patch35: Fix CRLF conversion in ASCII FTP upload (CPAN RT#41642)
      RHEL Patch36: Do not leak the temp utf8 copy of namepv (CPAN RT#123786)
      RHEL Patch37: Fix duplicating PerlIO::encoding when spawning threads (RT#31923)
      RHEL Patch38: Add SSL support to Net::SMTP (CPAN RT#93823) [1]
      RHEL Patch39: Add SSL support to Net::SMTP (CPAN RT#93823) [2]
      RHEL Patch40: Add SSL support to Net::SMTP (CPAN RT#93823) [3]
      RHEL Patch41: Add SSL support to Net::SMTP (CPAN RT#93823) [4]
      RHEL Patch42: Do not overload &quot;..&quot; in Math::BigInt (CPAN RT#80182)
      RHEL Patch43: Fix CVE-2018-18311 Integer overflow leading to buffer overflow
    Built under linux
    Compiled at Jan 21 2019 22:09:19
    @INC:
      /usr/local/lib64/perl5
      /usr/local/share/perl5
      /usr/lib64/perl5/vendor_perl
      /usr/share/perl5/vendor_perl
      /usr/lib64/perl5
      /usr/share/perl5
      .
  [mavridks@haswell-login ~]$ 
  </code></pre>
  <p>b) On the gpu-node:</p>
  <pre><code>[mavridks@haswell-179 ~]$ perl -V
  Summary of my perl5 (revision 5 version 16 subversion 3) configuration:
     
    Platform:
      osname=linux, osvers=3.10.0-693.17.1.el7.x86_64, archname=x86_64-linux-thread-multi
      uname='linux x86-01.bsys.centos.org 3.10.0-693.17.1.el7.x86_64 #1 smp thu jan 25 20:13:58 utc 2018 x86_64 x86_64 x86_64 gnulinux '
      config_args='-des -Doptimize=-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches   -m64 -mtune=generic -Dccdlflags=-Wl,--enable-new-dtags -Dlddlflags=-shared -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches   -m64 -mtune=generic -Wl,-z,relro  -DDEBUGGING=-g -Dversion=5.16.3 -Dmyhostname=localhost -Dperladmin=root@localhost -Dcc=gcc -Dcf_by=Red Hat, Inc. -Dprefix=/usr -Dvendorprefix=/usr -Dsiteprefix=/usr/local -Dsitelib=/usr/local/share/perl5 -Dsitearch=/usr/local/lib64/perl5 -Dprivlib=/usr/share/perl5 -Dvendorlib=/usr/share/perl5/vendor_perl -Darchlib=/usr/lib64/perl5 -Dvendorarch=/usr/lib64/perl5/vendor_perl -Darchname=x86_64-linux-thread-multi -Dlibpth=/usr/local/lib64 /lib64 /usr/lib64 -Duseshrplib -Dusethreads -Duseithreads -Dusedtrace=/usr/bin/dtrace -Duselargefiles -Dd_semctl_semun -Di_db -Ui_ndbm -Di_gdbm -Di_shadow -Di_syslog -Dman3ext=3pm -Duseperlio -Dinstallusrbinperl=n -Ubincompat5005 -Uversiononly -Dpager=/usr/bin/less -isr -Dd_gethostent_r_proto -Ud_endhostent_r_proto -Ud_sethostent_r_proto -Ud_endprotoent_r_proto -Ud_setprotoent_r_proto -Ud_endservent_r_proto -Ud_setservent_r_proto -Dscriptdir=/usr/bin -Dusesitecustomize'
      hint=recommended, useposix=true, d_sigaction=define
      useithreads=define, usemultiplicity=define
      useperlio=define, d_sfio=undef, uselargefiles=define, usesocks=undef
      use64bitint=define, use64bitall=define, uselongdouble=undef
      usemymalloc=n, bincompat5005=undef
    Compiler:
      cc='gcc', ccflags ='-D_REENTRANT -D_GNU_SOURCE -fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64',
      optimize='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic',
      cppflags='-D_REENTRANT -D_GNU_SOURCE -fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include'
      ccversion='', gccversion='4.8.5 20150623 (Red Hat 4.8.5-36)', gccosandvers=''
      intsize=4, longsize=8, ptrsize=8, doublesize=8, byteorder=12345678
      d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=16
      ivtype='long', ivsize=8, nvtype='double', nvsize=8, Off_t='off_t', lseeksize=8
      alignbytes=8, prototype=define
    Linker and Libraries:
      ld='gcc', ldflags =' -fstack-protector'
      libpth=/usr/local/lib64 /lib64 /usr/lib64
      libs=-lresolv -lnsl -lgdbm -ldb -ldl -lm -lcrypt -lutil -lpthread -lc -lgdbm_compat
      perllibs=-lresolv -lnsl -ldl -lm -lcrypt -lutil -lpthread -lc
      libc=, so=so, useshrplib=true, libperl=libperl.so
      gnulibc_version='2.17'
    Dynamic Linking:
      dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,--enable-new-dtags -Wl,-rpath,/usr/lib64/perl5/CORE'
      cccdlflags='-fPIC', lddlflags='-shared -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic -Wl,-z,relro '
  
  
  Characteristics of this binary (from libperl): 
    Compile-time options: HAS_TIMES MULTIPLICITY PERLIO_LAYERS
                          PERL_DONT_CREATE_GVSV PERL_IMPLICIT_CONTEXT
                          PERL_MALLOC_WRAP 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_PERLIO USE_PERL_ATOF
                          USE_REENTRANT_API USE_SITECUSTOMIZE
    Locally applied patches:
      Fedora Patch1: Removes date check, Fedora/RHEL specific
      Fedora Patch3: support for libdir64
      Fedora Patch4: use libresolv instead of libbind
      Fedora Patch5: USE_MM_LD_RUN_PATH
      Fedora Patch6: Skip hostname tests, due to builders not being network capable
      Fedora Patch7: Dont run one io test due to random builder failures
      Fedora Patch9: Fix find2perl to translate ? glob properly (RT#113054)
      Fedora Patch10: Fix broken atof (RT#109318)
      Fedora Patch13: Clear $@ before &quot;do&quot; I/O error (RT#113730)
      Fedora Patch14: Do not truncate syscall() return value to 32 bits (RT#113980)
      Fedora Patch15: Override the Pod::Simple::parse_file (CPANRT#77530)
      Fedora Patch16: Do not leak with attribute on my variable (RT#114764)
      Fedora Patch17: Allow operator after numeric keyword argument (RT#105924)
      Fedora Patch18: Extend stack in File::Glob::glob, (RT#114984)
      Fedora Patch19: Do not crash when vivifying $|
      Fedora Patch20: Fix misparsing of maketext strings (CVE-2012-6329)
      Fedora Patch21: Add NAME headings to CPAN modules (CPANRT#73396)
      Fedora Patch22: Fix leaking tied hashes (RT#107000) [1]
      Fedora Patch23: Fix leaking tied hashes (RT#107000) [2]
      Fedora Patch24: Fix leaking tied hashes (RT#107000) [3]
      Fedora Patch25: Fix dead lock in PerlIO after fork from thread (RT#106212)
      Fedora Patch26: Make regexp safe in a signal handler (RT#114878)
      Fedora Patch27: Update h2ph(1) documentation (RT#117647)
      Fedora Patch28: Update pod2html(1) documentation (RT#117623)
      Fedora Patch29: Document Math::BigInt::CalcEmu requires Math::BigInt (CPAN RT#85015)
      RHEL Patch30: Use stronger algorithm needed for FIPS in t/op/crypt.t (RT#121591)
      RHEL Patch31: Make *DBM_File desctructors thread-safe (RT#61912)
      RHEL Patch32: Use stronger algorithm needed for FIPS in t/op/taint.t (RT#123338)
      RHEL Patch33: Remove CPU-speed-sensitive test in Benchmark test
      RHEL Patch34: Make File::Glob work with threads again
      RHEL Patch35: Fix CRLF conversion in ASCII FTP upload (CPAN RT#41642)
      RHEL Patch36: Do not leak the temp utf8 copy of namepv (CPAN RT#123786)
      RHEL Patch37: Fix duplicating PerlIO::encoding when spawning threads (RT#31923)
      RHEL Patch38: Add SSL support to Net::SMTP (CPAN RT#93823) [1]
      RHEL Patch39: Add SSL support to Net::SMTP (CPAN RT#93823) [2]
      RHEL Patch40: Add SSL support to Net::SMTP (CPAN RT#93823) [3]
      RHEL Patch41: Add SSL support to Net::SMTP (CPAN RT#93823) [4]
      RHEL Patch42: Do not overload &quot;..&quot; in Math::BigInt (CPAN RT#80182)
    Built under linux
    Compiled at Oct 30 2018 18:59:43
    @INC:
      /usr/local/lib64/perl5
      /usr/local/share/perl5
      /usr/lib64/perl5/vendor_perl
      /usr/share/perl5/vendor_perl
      /usr/lib64/perl5
      /usr/share/perl5
      .
  </code></pre>
  <ol start="2">
  <li><p>Then one connects to a gpu-node. It seems we still have the same perl:</p>
  <p>[mavridks@haswell-179 ~]$ whereis perl
  perl: /usr/bin/perl /usr/share/man/man1/perl.1.gz</p>
  </li>
  </ol>
  <p>but now Data/Dumber is no more ( running perl -MData::Dumper -E 'say $INC{&quot;Data/Dumper.pm&quot;}' ):</p>
  <pre><code>[mavridks@haswell-179 ~]$ perl -MData::Dumper -E 'say $INC{&quot;Data/Dumper.pm&quot;}'
  Can't locate Data/Dumper.pm in @INC (@INC contains: /usr/local/lib64/perl5 /usr/local/share/perl5 /usr/lib64/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib64/perl5 /usr/share/perl5 .).
  BEGIN failed--compilation aborted.
  </code></pre>
  <ol start="3">
  <li><p>Then the IT department suggested loading the perl module; the server is built on a module system where all groups have the ability to load software as modules ( appending the right files in the path - this is the system used <a href="https://lmod.readthedocs.io/en/latest/#overview" rel="nofollow noreferrer">https://lmod.readthedocs.io/en/latest/#overview</a>). So, if we run module load Perl we have:</p>
  <p>[mavridks@haswell-179 ~]$ whereis perl
  perl: /usr/bin/perl /hits/sw/shared/apps/Perl/5.30.0-GCCcore-8.3.0/bin/perl /usr/share/man/man1/perl.1.gz</p>
  </li>
  </ol>
  <p>which means we have changed something( the distribution used may I say?). But now we have:</p>
  <pre><code>[mavridks@haswell-179 ~]$ perl -MData::Dumper -E 'say $INC{&quot;Data/Dumper.pm&quot;}'
  /hits/sw/shared/apps/Perl/5.30.0-GCCcore-8.3.0/lib/perl5/5.30.0/x86_64-linux-thread-multi/Data/Dumper.pm
  </code></pre>
  <p>which means we have the Data/Dumper on the system.</p>
  <ol start="3">
  <li><p>Finally, one need to load all the autotools as a module too. Then, it seems that the execution of the autogen.sh script is looking for perl modules from the system ( the one from login and not gpu) but of course it can't locate them.</p>
  <p>[mavridks@haswell-179 dssp-2.3.0]$ ./autogen.sh
  Can't locate Data/Dumper.pm in @INC (@INC contains: /hits/sw/shared/apps/Autoconf/2.69-GCC-4.8.4/share/autoconf /usr/local/lib64/perl5 /usr/local/share/perl5 /usr/lib64/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib64/perl5 /usr/share/perl5 .) at /hits/sw/shared/apps/Autoconf/2.69-GCC-4.8.4/share/autoconf/Autom4te/C4che.pm line 33.
  BEGIN failed--compilation aborted at /hits/sw/shared/apps/Autoconf/2.69-GCC-4.8.4/share/autoconf/Autom4te/C4che.pm line 33.
  Compilation failed in require at /hits/sw/shared/apps/Autoconf/2.69-GCC-4.8.4/bin/autom4te line 37.
  BEGIN failed--compilation aborted at /hits/sw/shared/apps/Autoconf/2.69-GCC-4.8.4/bin/autom4te line 37.
  aclocal: error: echo failed with exit status: 2</p>
  </li>
  </ol>