1If you read this file _as_is_, just ignore the funny characters you 2see. It is written in the POD format (see pod/perlpod.pod) which is 3specifically designed to be readable as is. 4 5=head1 NAME 6 7README.irix - Perl version 5 on Irix systems 8 9=head1 DESCRIPTION 10 11This document describes various features of Irix that will affect how Perl 12version 5 (hereafter just Perl) is compiled and/or runs. 13 14=head2 Building 32-bit Perl in Irix 15 16Use 17 18 sh Configure -Dcc='cc -n32' 19 20to compile Perl 32-bit. Don't bother with -n32 unless you have 7.1 21or later compilers (use cc -version to check). 22 23(Building 'cc -n32' is the default.) 24 25=head2 Building 64-bit Perl in Irix 26 27Use 28 29 sh Configure -Dcc='cc -64' -Duse64bitint 30 31This requires require a 64-bit MIPS CPU (R8000, R10000, ...) 32 33You can also use 34 35 sh Configure -Dcc='cc -64' -Duse64bitall 36 37but that makes no difference compared with the -Duse64bitint because 38of the C<cc -64>. 39 40You can also do 41 42 sh Configure -Dcc='cc -n32' -Duse64bitint 43 44to use long longs for the 64-bit integer type, in case you don't 45have a 64-bit CPU. 46 47If you are using gcc, just 48 49 sh Configure -Dcc=gcc -Duse64bitint 50 51should be enough, the Configure should automatically probe for the 52correct 64-bit settings. 53 54=head2 About Compiler Versions of Irix 55 56Some Irix cc versions, e.g. 7.3.1.1m (try cc -version) have been known 57to 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 59you didn't use that, then try adjusting other optimization options 60(-LNO, -INLINE, -O3 to -O2, etcetera). The compiler bug has been 61reported to SGI. (Allen Smith <easmith@beatrice.rutgers.edu>) 62 63=head2 Linker Problems in Irix 64 65If you get complaints about so_locations then search in the file 66hints/irix_6.sh for "lddflags" and do the suggested adjustments. 67(David Billinghurst <David.Billinghurst@riotinto.com.au>) 68 69=head2 Malloc in Irix 70 71Do not try to use Perl's malloc, this will lead into very mysterious 72errors (especially with -Duse64bitall). 73 74=head2 Building with threads in Irix 75 76Run Configure with -Duseithreads which will configure Perl with 77the Perl 5.8.0 "interpreter threads", see L<threads>. 78 79For Irix 6.2 with perl threads, you have to have the following 80patches installed: 81 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 87 88B<IMPORTANT>: Without patch 2401, a kernel bug in Irix 6.2 will cause 89your machine to panic and crash when running threaded perl. Irix 6.3 90and later are okay. 91 92 Thanks to Hannu Napari <Hannu.Napari@hut.fi> for the IRIX 93 pthreads patches information. 94 95=head2 Irix 5.3 96 97While running Configure and when building, you are likely to get 98quite a few of these warnings: 99 100 ld: 101 The shared object /usr/lib/libm.so did not resolve any symbols. 102 You may want to remove it from your link line. 103 104Ignore them: in IRIX 5.3 there is no way to quieten ld about this. 105 106During compilation you will see this warning from toke.c: 107 108 uopt: Warning: Perl_yylex: this procedure not optimized because it 109 exceeds size threshold; to optimize this procedure, use -Olimit option 110 with value >= 4252. 111 112Ignore the warning. 113 114In IRIX 5.3 and with Perl 5.8.1 (Perl 5.8.0 didn't compile in IRIX 5.3) 115the following failures are known. 116 117 Failed Test Stat Wstat Total Fail Failed List of Failed 118 -------------------------------------------------------------------------- 119 ../ext/List/Util/t/shuffle.t 0 139 ?? ?? % ?? 120 ../lib/Math/Trig.t 255 65280 29 12 41.38% 24-29 121 ../lib/sort.t 0 138 119 72 60.50% 48-119 122 56 tests and 474 subtests skipped. 123 Failed 3/811 test scripts, 99.63% okay. 78/75813 subtests failed, 99.90% okay. 124 125They are suspected to be compiler errors (at least the shuffle.t 126failure is known from some IRIX 6 setups) and math library errors 127(the Trig.t failure), but since IRIX 5 is long since end-of-lifed, 128further fixes for the IRIX are unlikely. If you can get gcc for 5.3, 129you could try that, too, since gcc in IRIX 6 is a known workaround for 130at least the shuffle.t and sort.t failures. 131 132=head1 AUTHOR 133 134Jarkko Hietaniemi <jhi@iki.fi> 135 136Please report any errors, updates, or suggestions to F<perlbug@perl.org>. 137 138