perlirix(1)


NAME

   perlirix - Perl version 5 on Irix systems

DESCRIPTION

   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
   Use

           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
   Use

           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. 7.3.1.1m (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 to -O2, etcetera).  The compiler bug has been
   reported to SGI.  (Allen Smith <easmith@beatrice.rutgers.edu>)

   Linker Problems in Irix
   If you get complaints about so_locations then search in the file
   hints/irix_6.sh for "lddflags" and do the suggested adjustments.
   (David Billinghurst <David.Billinghurst@riotinto.com.au>)

   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 <Hannu.Napari@hut.fi> 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:

     ld:
     The shared object /usr/lib/libm.so 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 this.

   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.

   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.

AUTHOR

   Jarkko Hietaniemi <jhi@iki.fi>

   Please report any errors, updates, or suggestions to perlbug@perl.org.





Opportunity


Personal Opportunity - Free software gives you access to billions of dollars of software at no cost. Use this software for your business, personal use or to develop a profitable skill. Access to source code provides access to a level of capabilities/information that companies protect though copyrights. Open source is a core component of the Internet and it is available to you. Leverage the billions of dollars in resources and capabilities to build a career, establish a business or change the world. The potential is endless for those who understand the opportunity.

Business Opportunity - Goldman Sachs, IBM and countless large corporations are leveraging open source to reduce costs, develop products and increase their bottom lines. Learn what these companies know about open source and how open source can give you the advantage.





Free Software


Free Software provides computer programs and capabilities at no cost but more importantly, it provides the freedom to run, edit, contribute to, and share the software. The importance of free software is a matter of access, not price. Software at no cost is a benefit but ownership rights to the software and source code is far more significant.


Free Office Software - The Libre Office suite provides top desktop productivity tools for free. This includes, a word processor, spreadsheet, presentation engine, drawing and flowcharting, database and math applications. Libre Office is available for Linux or Windows.





Free Books


The Free Books Library is a collection of thousands of the most popular public domain books in an online readable format. The collection includes great classical literature and more recent works where the U.S. copyright has expired. These books are yours to read and use without restrictions.


Source Code - Want to change a program or know how it works? Open Source provides the source code for its programs so that anyone can use, modify or learn how to write those programs themselves. Visit the GNU source code repositories to download the source.





Education


Study at Harvard, Stanford or MIT - Open edX provides free online courses from Harvard, MIT, Columbia, UC Berkeley and other top Universities. Hundreds of courses for almost all major subjects and course levels. Open edx also offers some paid courses and selected certifications.


Linux Manual Pages - A man or manual page is a form of software documentation found on Linux/Unix operating systems. Topics covered include computer programs (including library and system calls), formal standards and conventions, and even abstract concepts.