• TUX



Perl 5 version 14.1 documentation
Recently read



README.mpeix - Perl/iX for HP e3000 MPE


  2. Perl language for MPE
  3. Last updated January 12, 2006 @ 2100 UTC


This is a podified version of what used to be on the above-mentioned web page, podified by Jarkko Hietaniemi 2001-Jan-01.

What's New in Perl for MPE/iX

January 12, 2006

  • Updated for perl-5.8.8 and perl-5.9.3 by Ken Hirsch.

    Simplified the build process by using the MPEAUTOCONF functionality in Mark Klein's ld.

    If you build this from scratch, make sure you have a version of ld which supports it. In the shell, type

    1. ld --help
    2. and look for AUTOCONF or MPEAUTOCONF near the bottom
    3. or do this:
    4. ld --help 2>&1 | grep AUTOCONF

    If you see don't see AUTOCONF or MPEAUTOCONF, make sure you get a new version.

    You also do not have to use mpeix/relink after building, so the recommend sequence is:

    1. ./Configure -de
    2. # or ./Configure -de -Dusedevel
    3. # if you're building a development version
    4. make
    5. make test
    6. # if you run this in a job, do "make test_notty"
    7. make install

    Be prepared for a wait. These take much longer on MPE/iX than on a Unix system, because of a slow forking, mostly. On a lightly-loaded HP3000 Series 979 running MPE/iX 7.5:

    1. Configure: 1 hour
    2. make: 1 hour 15 minutes
    3. make test 1 hour 45 minutes

    Various socket problems were fixed in mpeix.c.

    Mark Klein provided a fixed sigsetjmp (that works with dynamic libraries) in mpeix_setjmp.c

June 1, 2000

  • Rebuilt to be compatible with mod_perl. If you plan on using mod_perl, you MUST download and install this version of Perl/iX!

  • uselargefiles="undef": not available in MPE for POSIX files yet.

  • Now bundled with various add-on packages:

    • libnet (as seen on CPAN)

    • libwww-perl (LWP) which lets Perl programs behave like web browsers:

    • mod_perl (just the perl portion; the actual DSO will be released soon with Apache/iX 1.3.12 from This module allows you to write high performance persistent Perl CGI scripts and all sorts of cool things. (

      and much much more hiding under /PERL/PUB/.cpan/

    • The CPAN module now works for automatic downloading and installing of add-on packages:

      1. 1. export FTP_PASSIVE=1
      2. 2. perl -MCPAN -e shell
      3. 3. Ignore any terminal I/O related complaints!


May 20, 2000

  • Updated to version 5.6.0. Builds straight out of the box on MPE/iX.

  • Perl's getpwnam() function which had regressed to being unimplemented on MPE is now implemented once again.

September 17, 1999

  • Migrated from to

Welcome to Perl/iX

This is the official home page for the HP e3000 MPE/iX ( ) port of the Perl scripting language ( ) which gives you all of the power of C, awk, sed, and sh in a single language. Check here for the latest news, implemented functionality, known bugs, to-do list, etc. Status reports about major milestones will also be posted to the HP3000-L mailing list ( ) and its associated gatewayed newsgroup comp.sys.hp.mpe.

I'm doing this port because I can't live without Perl on the Unix machines that I administer, and I want to have the same power available to me on MPE.

Please send your comments, questions, and bug reports directly to me, Mark Bixby ( ). Or just post them to HP3000-L.

The platform I'm using to do this port is an HP 3000 957RX running MPE/iX 6.0 and using the GNU gcc C compiler ( ).

The combined porting wisdom from all of my ports can be found in my MPE/iX Porting Guide (

IMPORTANT NOTICE: Yes, I do work for the HP CSY R&D lab, but ALL of the software you download from is my personal freeware that is NOT supported by HP.

System Requirements for Perl/iX

  • MPE/iX 5.5 or later. This version of Perl/iX does NOT run on MPE/iX 5.0 or earlier, nor does it run on "classic" MPE/V machines.

  • If you wish to recompile Perl, you must install both GNUCORE and GNUGCC from jazz (

  • Perl/iX will be happier on MPE/iX 5.5 if you install the MPEKX40B extended POSIX filename characters patch, but this is optional.

  • Patch LBCJXT6A is required on MPE/iX 5.5 machines in order to prevent Perl/iX from dying with an unresolved external reference to _getenv_libc.

  • If you will be compiling Perl/iX yourself, you will also need Syslog/iX ( ) and the /BIND/PUB/include and /BIND/PUB/lib portions of BIND/iX ( ).

How to Obtain Perl/iX


Download Perl using either FTP.ARPA.SYS or some other client


Extract the installation script


Edit the installation script


Run the installation script


Convert your *.a system archive libraries to *.sl shared libraries

Download Perl using FTP.ARPA.SYS from your HP 3000 (the preferred method).....

  3. open
  4. anonymous
  5. your@email.address
  6. bytestream
  7. cd /pub/mpe
  8. get perl-5.6.0-mpe.tar.Z /tmp/perl.tar.Z;disc=2147483647
  9. exit

.....Or download using some other generic web or ftp client (the alternate method)

Download the following files (make sure that you use "binary mode" or whatever client feature that is 8-bit clean):

  • Perl from



  • Upload those files to your HP 3000 in an 8-bit clean bytestream manner to:

    1. /tmp/perl.tar.Z
  • Then extract the installation script (after both download methods)

    1. :CHDIR /tmp
    2. :XEQ TAR.HPBIN.SYS 'xvfopz /tmp/perl.tar.Z INSTALL'
  • Edit the installation script

    Examine the accounting structure creation commands and modify if necessary (adding additional capabilities, choosing a non-system volume set, etc).

  • Run the installation script.

    The accounting structure will be created and then all files will be extracted from the archive.

  • Convert your *.a system archive libraries to *.sl shared libraries

    You only have to do this ONCE on your MPE/iX 5.5 machine in order to convert /lib/lib*.a and /usr/lib/lib*.a libraries to their *.sl equivalents. This step should not be necessary on MPE/iX 6.0 or later machines because the 6.0 or later update process does it for you.


Perl/iX Distribution Contents Highlights


    The file you're reading now.


    Perl/iX Installation script.


    Script to convert *.a system archive libraries to *.sl shared libraries.

  • PERL

    Perl NMPRG executable. A version-numbered backup copy also exists. You might wish to "ln -s /PERL/PUB/PERL /usr/local/bin/perl".

  • .cpan/

    Much add-on source code downloaded with the CPAN module.

  • lib/

    Perl libraries, both core and add-on.

  • man/

    Perl man page documentation.

  • public_html/feedback.cgi

    Sample feedback CGI form written in Perl.

  • src/perl-5.6.0-mpe

    Source code.

How to Compile Perl/iX


cd src/perl-5.6.0-mpe


Read the INSTALL file for the official instructions


./Configure -d






make test (expect approximately 15 out of 11306 subtests to fail, mostly due to MPE not supporting hard links, UDP socket problems, and handling exit() return codes improperly)


make install


Optionally create symbolic links that point to the Perl executable, i.e. ln -s /PERL/PUB/PERL /usr/local/bin/perl

The summary test results from "cd t; ./perl -I../lib harness":

  1. Failed Test Status Wstat Total Fail Failed List of failed
  2. ---------------------------------------------------------------------------
  3. io/fs.t 29 8 27.59% 2-5, 7-9, 11
  4. io/openpid.t 10 1 10.00% 7
  5. lib/io_sock.t 14 1 7.14% 13
  6. lib/io_udp.t 7 2 28.57% 3, 5
  7. lib/posix.t 27 1 3.70% 12
  8. op/lex_assign.t 187 1 0.53% 13
  9. op/stat.t 58 1 1.72% 3
  10. 15 tests and 94 subtests skipped.
  11. Failed 7/236 test scripts, 97.03% okay. 15/11306 subtests failed, 99.87% okay.

Getting Started with Perl/iX

Create your Perl script files with "#!/PERL/PUB/perl" (or an equivalent symbolic link) as the first line. Use the chmod command to make sure that your script has execute permission. Run your script!

Be sure to take a look at the CPAN module list ( ). A wide variety of free Perl software is available. You can automatically download these packages by using the CPAN module ( ).

MPE/iX Implementation Considerations

There some minor functionality issues to be aware of when comparing Perl for Unix (Perl/UX) to Perl/iX:

  • MPE gcc/ld doesn't properly support linking NMPRG executables against NMXL dynamic libraries, so you must manually run mpeix/relink after each re-build of Perl.

  • Perl/iX File::Copy will use MPE's /bin/cp command to copy files by name in order to preserve file attributes like file code.

  • MPE (and thus Perl/iX) lacks support for setgrent(), endgrent(), setpwent(), endpwent().

  • MPE (and thus Perl/iX) lacks support for hard links.

  • MPE requires GETPRIVMODE() in order to bind() to ports less than 1024. Perl/iX will call GETPRIVMODE() automatically on your behalf if you attempt to bind() to these low-numbered ports. Note that the Perl/iX executable and the PERL account do not normally have CAP=PM, so if you will be bind()-ing to these privileged ports, you will manually need to add PM capability as appropriate.

  • MPE requires that you bind() to an IP address of zero. Perl/iX automatically replaces the IP address that you pass to bind() with a zero.

  • MPE requires GETPRIVMODE() in order to setuid(). There are too many calls to setuid() within Perl/iX, so I have not attempted an automatic GETPRIVMODE() solution similar to bind().

Known Perl/iX Bugs Under Investigation


Perl/iX To-Do List

  • Make setuid()/setgid() support work.

  • Make sure that fcntl() against a socket descriptor is redirected to sfcntl().

  • Add support for Berkeley DB once I've finished porting Berkeley DB.

  • Write an MPE XS extension library containing miscellaneous important MPE functions like GETPRIVMODE(), GETUSERMODE(), and sfcntl().

Perl/iX Change History

May 6, 1999

  • Patch LBCJXT6A is required on MPE/iX 5.5 machines in order to prevent Perl/iX from dying with an unresolved external reference to _getenv_libc.

April 7, 1999

  • Updated to version 5.005_03.

  • The official source distribution once again compiles "straight out of the box" for MPE.

  • The current incarnation of the 5.5 POSIX filename extended characters patch is now MPEKX40B.

  • The LIBSHP3K *.a -> *.sl library conversion script is now included as /PERL/PUB/LIBSHP3K.

November 20, 1998

  • Updated to version 5.005_02.

  • Fixed a DynaLoader bug that was unable to load symbols from relative path name libraries.

  • Fixed a .xs compilation bug where the include file wasn't being installed into the proper directory.

  • All bugfixes will be submitted back to the official Perl developers.

  • The current incarnation of the POSIX filename extended characters patch is now MPEKXJ3A.

August 14, 1998

  • The previous POSIX filename extended characters patch MPEKX44C has been superseded by MPEKXB5A.

August 7, 1998

  • The previous POSIX filename extended characters patch MPEKX76A has been superseded by MPEKX44C.

July 28, 1998

  • Updated to version 5.005_01.

July 23, 1998

  • Updated to version 5.005 (production release). The public freeware sources are now 100% MPE-ready "straight out of the box".

July 17, 1998

  • Updated to version 5.005b1 (public beta release). The public freeware sources are now 99.9% MPE-ready. By installing and testing this beta on your own HP3000, you will be helping to insure that the final release of 5.005 will be 100% MPE-ready and 100% bug free.

  • My MPE binary release is now extracted using my standard INSTALL script.

July 15, 1998

  • Changed startperl to #!/PERL/PUB/perl so that Perl will recognize scripts more easily and efficiently.

July 8, 1998

  • Updated to version 5.004_70 (internal developer release) which is now MPE-ready. The next public freeware release of Perl should compile "straight out of the box" on MPE. Note that this version of Perl/iX was strictly internal to me and never publicly released. Note that [21]BIND/iX is now required (well, the include files and libbind.a) if you wish to compile Perl/iX.

November 6, 1997

  • Updated to version 5.004_04. No changes in MPE-specific functionality.

October 16, 1997

  • Added Demos section to the Perl/iX home page so you can see some sample Perl applications running on my 3000.

October 3, 1997

  • Added System Requirements section to the Perl/iX home page just so the prerequisites stand out more. Various other home page tweaks.

October 2, 1997

  • Initial public release.

September 1997

  • Porting begins.


Mark Bixby,