Anonymous Monk has asked for the wisdom of the Perl Monks concerning the following question:

I am porting STAF based perl services to new perl version. When trying to load threads in thread modules, getting error

threads.so: undefined symbol: PL_thr_key at /opt/ActivePerl-5.26/lib/XSLoader.pm

I saw some post which says this occurs if perl is not threaded. However, I have installed threaded perl downloaded from Active State. version is perl 5.26.1

Any clue to solve this?
  • Comment on With perl5.26 getting threads.so: undefined symbol: PL_thr_key

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Re: With perl5.26 getting threads.so: undefined symbol: PL_thr_key
by BrowserUk (Patriarch) on Nov 17, 2018 at 09:13 UTC

    Type perl -V on your command line, then copy&paste the output here.

    With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
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[reply]
[d/l]
Re: With perl5.26 getting threads.so: undefined symbol: PL_thr_key
by Laurent_R (Canon) on Nov 17, 2018 at 09:15 UTC
    Just to be sure, can you please show the output of the perl -v command?
[reply]
[d/l]


      Summary of my perl5 (revision 5 version 26 subversion 1) configuration:

      Platform:
      osname=linux
      osvers=3.2.0-24-virtual
      archname=x86_64-linux-thread-multi
      uname='linux perl-stackato64-precise 3.2.0-24-virtual #39-ubuntu smp mon may 21 18:44:18 utc 2012 x86_64 x86_64 x86_64 gnulinux '
      config_args='-ders -Dcc=gcc -Dusethreads -Duseithreads -Uinstallusrbinperl -Ulocincpth= -Uloclibpth= -Duse64bitall -Accflags=-DUSE_SITECUSTOMIZE -Duselargefiles -Accflags=-DPERL_RELOCATABLE_INCPUSH -Accflags=-fno-merge-constants -Dprefix=/opt/ActivePerl-5.26 -Dprivlib=/opt/ActivePerl-5.26/lib -Darchlib=/opt/ActivePerl-5.26/lib -Dsiteprefix=/opt/ActivePerl-5.26/site -Dsitelib=/opt/ActivePerl-5.26/site/lib -Dsitearch=/opt/ActivePerl-5.26/site/lib -Dsed=/bin/sed -Duseshrplib -Dcf_by=ActiveState -Dcf_email=support@ActiveState.com'
      hint=recommended
      useposix=true
      d_sigaction=define
      useithreads=define
      usemultiplicity=define
      use64bitint=define
      use64bitall=define
      uselongdouble=undef
      usemymalloc=n
      default_inc_excludes_dot=define
      bincompat5005=undef
      Compiler:
      cc='gcc'
      ccflags ='-D_REENTRANT -D_GNU_SOURCE -DUSE_SITECUSTOMIZE -DPERL_RELOCATABLE_INCPUSH -fno-merge-constants -fwrapv -fno-strict-aliasing -pipe -fstack-protector -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64'
      optimize='-O2'
      cppflags='-D_REENTRANT -D_GNU_SOURCE -DUSE_SITECUSTOMIZE -DPERL_RELOCATABLE_INCPUSH -fno-merge-constants -fwrapv -fno-strict-aliasing -pipe -fstack-protector'
      ccversion=''
      gccversion='4.6.3'
      gccosandvers=''
      intsize=4
      longsize=8
      ptrsize=8
      doublesize=8
      byteorder=12345678
      doublekind=3
      d_longlong=define
      longlongsize=8
      d_longdbl=define
      longdblsize=16
      longdblkind=3
      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/lib /usr/lib /lib/../lib /usr/lib/../lib /lib /lib64 /usr/lib64 /usr/local/lib64
      libs=-lpthread -lnsl -ldb -ldl -lm -lcrypt -lutil -lc
      perllibs=-lpthread -lnsl -ldl -lm -lcrypt -lutil -lc
      libc=libc-2.15.so
      so=so
      useshrplib=true
      libperl=libperl.so
      gnulibc_version='2.15'
      Dynamic Linking:
      dlsrc=dl_dlopen.xs
      dlext=so
      d_dlsymun=undef
      ccdlflags='-Wl,-E -Wl,-rpath,/opt/ActivePerl-5.26/lib/CORE'
      cccdlflags='-fPIC'
      lddlflags='-shared -O2 -fstack-protector'


      Characteristics of this binary (from libperl):
      Compile-time options:
      HAS_TIMES
      MULTIPLICITY
      PERLIO_LAYERS
      PERL_COPY_ON_WRITE
      PERL_DONT_CREATE_GVSV
      PERL_IMPLICIT_CONTEXT
      PERL_MALLOC_WRAP
      PERL_OP_PARENT
      PERL_PRESERVE_IVUV
      PERL_RELOCATABLE_INCPUSH
      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
      USE_SITECUSTOMIZE
      Locally applied patches:
      ActivePerl Build 2601 404865
      Built under linux
      Compiled at Dec 11 2017 13:17:08
      @INC:
      /opt/ActivePerl-5.26/site/lib
      /opt/ActivePerl-5.26/lib


[reply]
        I don't really have an understanding of what's going wrong here, but I'm wondering if the error you see is reproduced by running: 
        perl -Mthreads -le 1

        [download]
        Can you confirm ?

        Cheers,
        Rob
[reply]
[d/l]

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