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perlirix (1)


perlirix - Perl version 5 on Irix systems


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Perl Programmers Reference Guide                      PERLIRIX(1)

     README.irix - Perl version 5 on Irix systems

     This document describes various features of Irix that will
     affect how Perl version 5 (hereafter just Perl) is compiled
     and/or runs.

  Building 32-bit Perl in Irix

             sh Configure -Dcc='cc -n32'

     to compile Perl 32-bit.  Don't bother with -n32 unless you
     have 7.1 or later compilers (use cc -version to check).

     (Building 'cc -n32' is the default.)

  Building 64-bit Perl in Irix

             sh Configure -Dcc='cc -64' -Duse64bitint

     This requires require a 64-bit MIPS CPU (R8000, R10000, ...)

     You can also use

             sh Configure -Dcc='cc -64' -Duse64bitall

     but that makes no difference compared with the -Duse64bitint
     because of the "cc -64".

     You can also do

             sh Configure -Dcc='cc -n32' -Duse64bitint

     to use long longs for the 64-bit integer type, in case you
     don't have a 64-bit CPU.

     If you are using gcc, just

             sh Configure -Dcc=gcc -Duse64bitint

     should be enough, the Configure should automatically probe
     for the correct 64-bit settings.

  About Compiler Versions of Irix
     Some Irix cc versions, e.g. (try cc -version) have
     been known to have issues (coredumps) when compiling perl.c.
     If you've used -OPT:fast_io=ON and this happens, try
     removing it.  If that fails, or you didn't use that, then
     try adjusting other optimization options (-LNO, -INLINE, -O3

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Perl Programmers Reference Guide                      PERLIRIX(1)

     to -O2, etcetera).  The compiler bug has been reported to
     SGI.  (Allen Smith <>)

  Linker Problems in Irix
     If you get complaints about so_locations then search in the
     file hints/ for "lddflags" and do the suggested
     adjustments.  (David Billinghurst

  Malloc in Irix
     Do not try to use Perl's malloc, this will lead into very
     mysterious errors (especially with -Duse64bitall).

  Building with threads in Irix
     Run Configure with -Duseithreads which will configure Perl
     with the Perl 5.8.0 "interpreter threads", see threads.

     For Irix 6.2 with perl threads, you have to have the
     following patches installed:

             1404 Irix 6.2 Posix 1003.1b man pages
             1645 Irix 6.2 & 6.3 POSIX header file updates
             2000 Irix 6.2 Posix 1003.1b support modules
             2254 Pthread library fixes
             2401 6.2 all platform kernel rollup

     IMPORTANT: Without patch 2401, a kernel bug in Irix 6.2 will
     cause your machine to panic and crash when running threaded
     perl.  Irix 6.3 and later are okay.

         Thanks to Hannu Napari <> for the IRIX
         pthreads patches information.

  Irix 5.3
     While running Configure and when building, you are likely to
     get quite a few of these warnings:

       The shared object /usr/lib/ did not resolve any symbols.
             You may want to remove it from your link line.

     Ignore them: in IRIX 5.3 there is no way to quieten ld about

     During compilation you will see this warning from toke.c:

       uopt: Warning: Perl_yylex: this procedure not optimized because it
             exceeds size threshold; to optimize this procedure, use -Olimit option
             with value >= 4252.

     Ignore the warning.

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     In IRIX 5.3 and with Perl 5.8.1 (Perl 5.8.0 didn't compile
     in IRIX 5.3) the following failures are known.

      Failed Test                  Stat Wstat Total Fail  Failed  List of Failed
      ../ext/List/Util/t/shuffle.t    0   139    ??   ??       %  ??
      ../lib/Math/Trig.t            255 65280    29   12  41.38%  24-29
      ../lib/sort.t                   0   138   119   72  60.50%  48-119
      56 tests and 474 subtests skipped.
      Failed 3/811 test scripts, 99.63% okay. 78/75813 subtests failed, 99.90% okay.

     They are suspected to be compiler errors (at least the
     shuffle.t failure is known from some IRIX 6 setups) and math
     library errors (the Trig.t failure), but since IRIX 5 is
     long since end-of-lifed, further fixes for the IRIX are
     unlikely.  If you can get gcc for 5.3, you could try that,
     too, since gcc in IRIX 6 is a known workaround for at least
     the shuffle.t and sort.t failures.

     Jarkko Hietaniemi <>

     Please report any errors, updates, or suggestions to

     See attributes(5) for descriptions of the following

     |Availability   | runtime/perl-512 |
     |Stability      | Uncommitted      |
     This software was built from source available at  The original
     community source was downloaded from

     Further information about this software can be found on the
     open source community website at

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