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PROGRAM:

NAME


perlirix - Perl version 5 on Irix systems

DESCRIPTION


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
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.)

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 "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.

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 <[email protected]>)

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
<[email protected]>)

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 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 <[email protected]> for the IRIX
pthreads patches information.

Irix 5.3
While running Configure and when building, you are likely to get quite a few of these
warnings:

ld:
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.

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