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- 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' -Duse64bitint
-
- This requires require a 64-bit MIPS CPU (R8000, R10000, ...)
-
- You can also use
-
- sh Configure -Dcc='cc -64' -Duse64bitall
-
- but that makes no difference compared with the -Duse64bitint because
- of the C<cc -64>.
-
- You can also do
-
- sh Configure -Dcc='cc -n32' -Duse64bitint
-
- to use long longs for the 64-bit integer type, in case you don't
- have a 64-bit CPU.
-
- If you are using gcc, just
-
- sh Configure -Dcc=gcc -Duse64bitint
-
- should be enough, the Configure should automatically probe for the
- correct 64-bit settings.
-
- =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 <easmith@beatrice.rutgers.edu>)
-
- =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 <David.Billinghurst@riotinto.com.au>)
-
- =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 in Irix
-
- Run Configure with -Duseithreads which will configure Perl with
- the new Perl 5.8.0 "interpreter threads", see L<threads>.
-
- The old Perl 5.005 threads is obsolete, unmaintained, and its use is
- discouraged. If you really want it, run Configure with the
- -Dusethreads -Duse5005threads options as described in INSTALL.
-
- For either thread model and 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
-
- B<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.
-
- Thanks to Hannu Napari <Hannu.Napari@hut.fi> for the IRIX
- pthreads patches information.
-
- =head1 AUTHOR
-
- Jarkko Hietaniemi <jhi@iki.fi>
-
- Please report any errors, updates, or suggestions to F<perlbug@perl.org>.
-
-