1 If you read this file _as_is_, just ignore the funny characters you
2 see. It is written in the POD format (see pod/perlpod.pod) which is
3 specifically designed to be readable as is.
7 README.irix - Perl version 5 on Irix systems
11 This document describes various features of Irix that will affect how Perl
12 version 5 (hereafter just Perl) is compiled and/or runs.
14 =head2 Building 32-bit Perl in Irix
18 sh Configure -Dcc='cc -n32'
20 to compile Perl 32-bit. Don't bother with -n32 unless you have 7.1
21 or later compilers (use cc -version to check).
23 (Building 'cc -n32' is the default.)
25 =head2 Building 64-bit Perl in Irix
29 sh Configure -Dcc='cc -64' -Duse64bitint
31 This requires require a 64-bit MIPS CPU (R8000, R10000, ...)
35 sh Configure -Dcc='cc -64' -Duse64bitall
37 but that makes no difference compared with the -Duse64bitint because
42 sh Configure -Dcc='cc -n32' -Duse64bitint
44 to use long longs for the 64-bit integer type, in case you don't
47 If you are using gcc, just
49 sh Configure -Dcc=gcc -Duse64bitint
51 should be enough, the Configure should automatically probe for the
52 correct 64-bit settings.
54 =head2 About Compiler Versions of Irix
56 Some Irix cc versions, e.g. 7.3.1.1m (try cc -version) have been known
57 to have issues (coredumps) when compiling perl.c. If you've used
58 -OPT:fast_io=ON and this happens, try removing it. If that fails, or
59 you didn't use that, then try adjusting other optimization options
60 (-LNO, -INLINE, -O3 to -O2, etcetera). The compiler bug has been
61 reported to SGI. (Allen Smith <easmith@beatrice.rutgers.edu>)
63 =head2 Linker Problems in Irix
65 If you get complaints about so_locations then search in the file
66 hints/irix_6.sh for "lddflags" and do the suggested adjustments.
67 (David Billinghurst <David.Billinghurst@riotinto.com.au>)
71 Do not try to use Perl's malloc, this will lead into very mysterious
72 errors (especially with -Duse64bitall).
74 =head2 Building with threads in Irix
76 Run Configure with -Duseithreads which will configure Perl with
77 the Perl 5.8.0 "interpreter threads", see L<threads>.
79 For Irix 6.2 with perl threads, you have to have the following
82 1404 Irix 6.2 Posix 1003.1b man pages
83 1645 Irix 6.2 & 6.3 POSIX header file updates
84 2000 Irix 6.2 Posix 1003.1b support modules
85 2254 Pthread library fixes
86 2401 6.2 all platform kernel rollup
88 B<IMPORTANT>: Without patch 2401, a kernel bug in Irix 6.2 will cause
89 your machine to panic and crash when running threaded perl. Irix 6.3
92 Thanks to Hannu Napari <Hannu.Napari@hut.fi> for the IRIX
93 pthreads patches information.
97 Jarkko Hietaniemi <jhi@iki.fi>
99 Please report any errors, updates, or suggestions to F<perlbug@perl.org>.