1PERLIRIX(1)            Perl Programmers Reference Guide            PERLIRIX(1)
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NAME

6       README.irix - Perl version 5 on Irix systems
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DESCRIPTION

9       This document describes various features of Irix that will affect how
10       Perl version 5 (hereafter just Perl) is compiled and/or runs.
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12   Building 32-bit Perl in Irix
13       Use
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15               sh Configure -Dcc='cc -n32'
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17       to compile Perl 32-bit.  Don't bother with -n32 unless you have 7.1 or
18       later compilers (use cc -version to check).
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20       (Building 'cc -n32' is the default.)
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22   Building 64-bit Perl in Irix
23       Use
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25               sh Configure -Dcc='cc -64' -Duse64bitint
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27       This requires require a 64-bit MIPS CPU (R8000, R10000, ...)
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29       You can also use
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31               sh Configure -Dcc='cc -64' -Duse64bitall
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33       but that makes no difference compared with the -Duse64bitint because of
34       the "cc -64".
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36       You can also do
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38               sh Configure -Dcc='cc -n32' -Duse64bitint
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40       to use long longs for the 64-bit integer type, in case you don't have a
41       64-bit CPU.
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43       If you are using gcc, just
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45               sh Configure -Dcc=gcc -Duse64bitint
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47       should be enough, the Configure should automatically probe for the
48       correct 64-bit settings.
49
50   About Compiler Versions of Irix
51       Some Irix cc versions, e.g. 7.3.1.1m (try cc -version) have been known
52       to have issues (coredumps) when compiling perl.c.  If you've used
53       -OPT:fast_io=ON and this happens, try removing it.  If that fails, or
54       you didn't use that, then try adjusting other optimization options
55       (-LNO, -INLINE, -O3 to -O2, etcetera).  The compiler bug has been
56       reported to SGI.  (Allen Smith <easmith@beatrice.rutgers.edu>)
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58   Linker Problems in Irix
59       If you get complaints about so_locations then search in the file
60       hints/irix_6.sh for "lddflags" and do the suggested adjustments.
61       (David Billinghurst <David.Billinghurst@riotinto.com.au>)
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63   Malloc in Irix
64       Do not try to use Perl's malloc, this will lead into very mysterious
65       errors (especially with -Duse64bitall).
66
67   Building with threads in Irix
68       Run Configure with -Duseithreads which will configure Perl with the
69       Perl 5.8.0 "interpreter threads", see threads.
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71       For Irix 6.2 with perl threads, you have to have the following patches
72       installed:
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74               1404 Irix 6.2 Posix 1003.1b man pages
75               1645 Irix 6.2 & 6.3 POSIX header file updates
76               2000 Irix 6.2 Posix 1003.1b support modules
77               2254 Pthread library fixes
78               2401 6.2 all platform kernel rollup
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80       IMPORTANT: Without patch 2401, a kernel bug in Irix 6.2 will cause your
81       machine to panic and crash when running threaded perl.  Irix 6.3 and
82       later are okay.
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84           Thanks to Hannu Napari <Hannu.Napari@hut.fi> for the IRIX
85           pthreads patches information.
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87   Irix 5.3
88       While running Configure and when building, you are likely to get quite
89       a few of these warnings:
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91         ld:
92         The shared object /usr/lib/libm.so did not resolve any symbols.
93               You may want to remove it from your link line.
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95       Ignore them: in IRIX 5.3 there is no way to quieten ld about this.
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97       During compilation you will see this warning from toke.c:
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99         uopt: Warning: Perl_yylex: this procedure not optimized because it
100               exceeds size threshold; to optimize this procedure, use -Olimit option
101               with value >= 4252.
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103       Ignore the warning.
104
105       In IRIX 5.3 and with Perl 5.8.1 (Perl 5.8.0 didn't compile in IRIX 5.3)
106       the following failures are known.
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108        Failed Test                  Stat Wstat Total Fail  Failed  List of Failed
109        --------------------------------------------------------------------------
110        ../ext/List/Util/t/shuffle.t    0   139    ??   ??       %  ??
111        ../lib/Math/Trig.t            255 65280    29   12  41.38%  24-29
112        ../lib/sort.t                   0   138   119   72  60.50%  48-119
113        56 tests and 474 subtests skipped.
114        Failed 3/811 test scripts, 99.63% okay. 78/75813 subtests failed, 99.90% okay.
115
116       They are suspected to be compiler errors (at least the shuffle.t
117       failure is known from some IRIX 6 setups) and math library errors (the
118       Trig.t failure), but since IRIX 5 is long since end-of-lifed, further
119       fixes for the IRIX are unlikely.  If you can get gcc for 5.3, you could
120       try that, too, since gcc in IRIX 6 is a known workaround for at least
121       the shuffle.t and sort.t failures.
122

AUTHOR

124       Jarkko Hietaniemi <jhi@iki.fi>
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126       Please report any errors, updates, or suggestions to perlbug@perl.org.
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130perl v5.10.1                      2009-02-12                       PERLIRIX(1)
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