If you read this file _as_is_, just ignore the funny characters you see. It is written in the POD format (see pod/perlpod.pod) which is specifically designed to be readable as is. =head1 NAME README.irix - Perl version 5 on Irix systems =head1 DESCRIPTION This document describes various features of Irix that will affect how Perl version 5 (hereafter just Perl) is compiled and/or runs. =head2 Building 32-bit Perl in Irix Use sh Configure -Dcc='cc -n32' to compile Perl 32-bit. Don't bother with -n32 unless you have 7.1 or later compilers (use cc -version to check). (Building 'cc -n32' is the default.) =head2 Building 64-bit Perl in Irix Use sh Configure -Dcc='cc -64' to compiler Perl 64-bit. =head2 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, etcetera). The compiler bug has been reported to SGI. (Allen Smith ) =head2 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 ) =head2 Malloc in Irix Do not try to use Perl's malloc, this will lead into very mysterious errors (especially with -Duse64bitall). =head2 Building with threads For Irix 6.2, you have to have the following patches installed: 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 IMPORTANT: 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. =head1 AUTHOR Jarkko Hietaniemi Please report any errors, updates, or suggestions to F.