perlirix - 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.
Building 32-bit Perl in Irix¶
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.)
Building 64-bit Perl in Irix¶
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
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
If you are using gcc, just
sh Configure -Dcc=gcc -Duse64bitint
should be enough, the Configure should automatically probe for the correct
About Compiler Versions of Irix¶
Some Irix cc versions, e.g. 22.214.171.124m (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
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
Malloc in Irix¶
Do not try to use Perl's malloc, this will lead into very mysterious errors
(especially with -Duse64bitall).
Building with threads in Irix¶
Run Configure with -Duseithreads which will configure Perl with the Perl 5.8.0
"interpreter threads", see threads.
For Irix 6.2 with perl threads, you have to have the following patches
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
: 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
Thanks to Hannu Napari <Hannu.Napari@hut.fi> for the IRIX
pthreads patches information.
While running Configure and when building, you are likely to get quite a few of
The shared object /usr/lib/libm.so did not resolve any symbols.
You may want to remove it from your link line.
Ignore them: in IRIX 5.3 there is no way to quieten ld about this.
During compilation you will see this warning from toke.c:
uopt: Warning: Perl_yylex: this procedure not optimized because it
exceeds size threshold; to optimize this procedure, use -Olimit option
with value >= 4252.
Ignore the warning.
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/Math/Trig.t 255 65280 29 12 41.38% 24-29
../lib/sort.t 0 138 119 72 60.50% 48-119
56 tests and 474 subtests skipped.
Failed 3/811 test scripts, 99.63% okay. 78/75813 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) and math library errors (the Trig.t failure),
but since IRIX 5 is long since end-of-lifed, further fixes for the IRIX 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 at least the shuffle.t and sort.t failures.
Jarkko Hietaniemi <email@example.com>
Please report any errors, updates, or suggestions to