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+.\" -*- mode: troff; coding: utf-8 -*-
+.\" Automatically generated by Pod::Man 5.01 (Pod::Simple 3.43)
+.\"
+.\" Standard preamble:
+.\" ========================================================================
+.de Sp \" Vertical space (when we can't use .PP)
+.if t .sp .5v
+.if n .sp
+..
+.de Vb \" Begin verbatim text
+.ft CW
+.nf
+.ne \\$1
+..
+.de Ve \" End verbatim text
+.ft R
+.fi
+..
+.\" \*(C` and \*(C' are quotes in nroff, nothing in troff, for use with C<>.
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+.\"
+.\" Escape single quotes in literal strings from groff's Unicode transform.
+.ie \n(.g .ds Aq \(aq
+.el .ds Aq '
+.\"
+.\" If the F register is >0, we'll generate index entries on stderr for
+.\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index
+.\" entries marked with X<> in POD. Of course, you'll have to process the
+.\" output yourself in some meaningful fashion.
+.\"
+.\" Avoid warning from groff about undefined register 'F'.
+.de IX
+..
+.nr rF 0
+.if \n(.g .if rF .nr rF 1
+.if (\n(rF:(\n(.g==0)) \{\
+. if \nF \{\
+. de IX
+. tm Index:\\$1\t\\n%\t"\\$2"
+..
+. if !\nF==2 \{\
+. nr % 0
+. nr F 2
+. \}
+. \}
+.\}
+.rr rF
+.\" ========================================================================
+.\"
+.IX Title "PERLIRIX 1"
+.TH PERLIRIX 1 2024-01-25 "perl v5.38.2" "Perl Programmers Reference Guide"
+.\" For nroff, turn off justification. Always turn off hyphenation; it makes
+.\" way too many mistakes in technical documents.
+.if n .ad l
+.nh
+.SH NAME
+perlirix \- Perl version 5 on Irix systems
+.SH DESCRIPTION
+.IX Header "DESCRIPTION"
+This document describes various features of Irix that will affect how Perl
+version 5 (hereafter just Perl) is compiled and/or runs.
+.SS "Building 32\-bit Perl in Irix"
+.IX Subsection "Building 32-bit Perl in Irix"
+Use
+.PP
+.Vb 1
+\& sh Configure \-Dcc=\*(Aqcc \-n32\*(Aq
+.Ve
+.PP
+to compile Perl 32\-bit. Don't bother with \-n32 unless you have 7.1
+or later compilers (use cc \-version to check).
+.PP
+(Building 'cc \-n32' is the default.)
+.SS "Building 64\-bit Perl in Irix"
+.IX Subsection "Building 64-bit Perl in Irix"
+Use
+.PP
+.Vb 1
+\& sh Configure \-Dcc=\*(Aqcc \-64\*(Aq \-Duse64bitint
+.Ve
+.PP
+This requires require a 64\-bit MIPS CPU (R8000, R10000, ...)
+.PP
+You can also use
+.PP
+.Vb 1
+\& sh Configure \-Dcc=\*(Aqcc \-64\*(Aq \-Duse64bitall
+.Ve
+.PP
+but that makes no difference compared with the \-Duse64bitint because
+of the \f(CW\*(C`cc \-64\*(C'\fR.
+.PP
+You can also do
+.PP
+.Vb 1
+\& sh Configure \-Dcc=\*(Aqcc \-n32\*(Aq \-Duse64bitint
+.Ve
+.PP
+to use long longs for the 64\-bit integer type, in case you don't
+have a 64\-bit CPU.
+.PP
+If you are using gcc, just
+.PP
+.Vb 1
+\& sh Configure \-Dcc=gcc \-Duse64bitint
+.Ve
+.PP
+should be enough, the Configure should automatically probe for the
+correct 64\-bit settings.
+.SS "About Compiler Versions of Irix"
+.IX Subsection "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, et cetera). The compiler bug has been
+reported to SGI. (Allen Smith <easmith@beatrice.rutgers.edu>)
+.SS "Linker Problems in Irix"
+.IX Subsection "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>)
+.SS "Malloc in Irix"
+.IX Subsection "Malloc in Irix"
+Do not try to use Perl's malloc, this will lead into very mysterious
+errors (especially with \-Duse64bitall).
+.SS "Building with threads in Irix"
+.IX Subsection "Building with threads in Irix"
+Run Configure with \-Duseithreads which will configure Perl with
+the Perl 5.8.0 "interpreter threads", see threads.
+.PP
+For Irix 6.2 with perl threads, you have to have the following
+patches installed:
+.PP
+.Vb 5
+\& 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
+.Ve
+.PP
+\&\fBIMPORTANT\fR: 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.
+.PP
+.Vb 2
+\& Thanks to Hannu Napari <Hannu.Napari@hut.fi> for the IRIX
+\& pthreads patches information.
+.Ve
+.SS "Irix 5.3"
+.IX Subsection "Irix 5.3"
+While running Configure and when building, you are likely to get
+quite a few of these warnings:
+.PP
+.Vb 3
+\& ld:
+\& The shared object /usr/lib/libm.so did not resolve any symbols.
+\& You may want to remove it from your link line.
+.Ve
+.PP
+Ignore them: in IRIX 5.3 there is no way to quieten ld about this.
+.PP
+During compilation you will see this warning from toke.c:
+.PP
+.Vb 3
+\& uopt: Warning: Perl_yylex: this procedure not optimized because it
+\& exceeds size threshold; to optimize this procedure, use \-Olimit
+\& option with value >= 4252.
+.Ve
+.PP
+Ignore the warning.
+.PP
+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.
+.PP
+.Vb 8
+\& Failed Test Stat Wstat Total Fail Failed|Failing List
+\& \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-
+\& ../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.
+.Ve
+.PP
+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.
+.SH AUTHOR
+.IX Header "AUTHOR"
+Jarkko Hietaniemi <jhi@iki.fi>
+.PP
+Please report any errors, updates, or suggestions to
+<https://github.com/Perl/perl5/issues>.