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

6       perlirix - 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
24
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, et cetera).  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.
96
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
101               option with value >= 4252.
102
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.
107
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,
115           99.90% okay.
116
117       They are suspected to be compiler errors (at least the shuffle.t
118       failure is known from some IRIX 6 setups) and math library errors (the
119       Trig.t failure), but since IRIX 5 is long since end-of-lifed, further
120       fixes for the IRIX are unlikely.  If you can get gcc for 5.3, you could
121       try that, too, since gcc in IRIX 6 is a known workaround for at least
122       the shuffle.t and sort.t failures.
123

AUTHOR

125       Jarkko Hietaniemi <jhi@iki.fi>
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127       Please report any errors, updates, or suggestions to
128       <https://github.com/Perl/perl5/issues>.
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132perl v5.34.1                      2022-03-15                       PERLIRIX(1)
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