| README.irix - Perl version 5 on Irix systems |
README.irix - Perl version 5 on Irix systems
This document describes various features of Irix that will affect how Perl version 5 (hereafter just Perl) is compiled and/or runs.
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.)
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 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.
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>)
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>)
Do not try to use Perl's malloc, this will lead into very mysterious errors (especially with -Duse64bitall).
Run Configure with -Duseithreads which will configure Perl with the new Perl 5.8.0 ``interpreter threads'', see the threads manpage.
The old Perl 5.005 threads is obsolete, unmaintained, and its use is discouraged.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
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.
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.
Failed Test Stat Wstat Total Fail Failed List of Failed -------------------------------------------------------------------------- ../ext/List/Util/t/shuffle.t 0 139 ?? ?? % ?? ../lib/sort.t 0 138 119 72 60.50% 48-119 54 tests and 430 subtests skipped. Failed 2/767 test scripts, 99.74% okay. 72/70246 subtests failed, 99.90% okay.
They are suspected to be compiler errors (at least the shuffle.t failure is known from some IRIX 6 setups), but since IRIX 5 is long since end-of-lifed, fixes for the IRIX compiler 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 these failures.
Jarkko Hietaniemi <jhi@iki.fi>
Please report any errors, updates, or suggestions to perlbug@perl.org.
| README.irix - Perl version 5 on Irix systems |