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PERLMACHTEN(1) Perl Programmers Reference Guide PERLMACHTEN(1)
NAME
README.machten - Perl version 5 on Power MachTen systems
DESCRIPTION
This document describes how to build Perl 5 on Power MachTen systems, and discusses
a few wrinkles in the implementation.
Perl version 5.8.x and greater not supported
Power MachTen is not supported by versions of Perl later than 5.6.x. If you wish
to build a version from the 5.6 track, please obtain a source distribution from the
archive at <http://cpan.org/src/5.0/> and follow the instructions in its
README.machten file.
MachTen is no longer supported by its developers, Tenon Intersystems. A UNIX envi-
ronment hosted on Mac OS Classic, MachTen has been superseded by Mac OS X and by
BSD and Linux implementations for Macintosh hardware. The final version of Power
MachTen, 4.1.4, lacks many features found in modern implementations of UNIX, and
has a number of bugs. These shortcomings prevent recent versions of Perl from
being able to use extensions on MachTen, and cause numerous test suite failures in
the perl core.
In September 2003, a discussion on the MachTen mailing list determined that there
was no interest in making a later version of Perl build successfully on MachTen.
Consequently, support for building Perl under MachTen has been suppressed in Perl
distributions published after February 2004. The hints file, hints/machten.sh,
remains a part of the distributions for reference purposes.
Compiling Perl 5.6.x on MachTen
To compile perl 5.6.x under MachTen 4.1.4 (and probably earlier versions):
./Configure -de
make
make test
make install
This builds and installs a statically-linked perl; MachTen’s dynamic linking facil-
ities are not adequate to support Perl’s use of dynamically linked libraries. (See
hints/machten.sh for more information.)
You should have at least 32 megabytes of free memory on your system before running
the "make" command.
For much more information on building perl -- for example, on how to change the
default installation directory -- see INSTALL.
Failures during "make test" on MachTen
op/lexassign.t
This test may fail when first run after building perl. It does not fail subse-
quently. The cause is unknown.
pragma/warnings.t
Test 257 fails due to a failure to warn about attempts to read from a filehan-
dle which is a duplicate of stdout when stdout is attached to a pipe. The out-
put of the test contains a block comment which discusses a different failure,
not applicable to MachTen.
The root of the problem is that Machten does not assign a file type to either
end of a pipe (see stat), resulting, among other things in Perl’s "-p" test
failing on file descriptors belonging to pipes. As a result, perl becomes con-
fused, and the test for reading from a write-only file fails. I am reluctant
to patch perl to get around this, as it’s clearly an OS bug (about which Tenon
has been informed), and limited in its effect on practical Perl programs.
Building external modules on MachTen
To add an external module to perl, build in the normal way, which is documented in
ExtUtils::MakeMaker, or which can be driven automatically by the CPAN module (see
CPAN), which is part of the standard distribution. If you want to install a module
which contains XS code (C or C++ source which compiles to object code for linking
with perl), you will have to replace your perl binary with a new version containing
the new statically-linked object module. The build process tells you how to do
this.
There is a gotcha, however, which users usually encounter immediately they respond
to CPAN’s invitation to "install Bundle::CPAN". When installing a bundle -- a group
of modules which together achieve some particular purpose, the installation process
for later modules in the bundle tends to assume that earlier modules have been
fully installed and are available for use. This is not true on a statically-linked
system for earlier modules which contain XS code. As a result the installation of
the bundle fails. The work-around is not to install the bundle as a one-shot oper-
ation, but instead to see what modules it contains, and install these one-at-a-time
by hand in the order given.
AUTHOR
Dominic Dunlop <domo AT computer.org>
DATE
Version 1.1.0 2004-02-13
perl v5.8.6 2004-11-05 PERLMACHTEN(1)
Generated by $Id: phpMan.php,v 4.55 2007/09/05 04:42:51 chedong Exp $ Author: Che Dong
On Apache/1.3.41 (Unix) PHP/5.2.5 mod_perl/1.30 mod_gzip/1.3.26.1a
Under GNU General Public License
2008-12-02 02:49 @38.103.63.58 CrawledBy CCBot/1.0 (+http://www.commoncrawl.org/bot.html)