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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
specially designed to be readable as is.
=head1 NAME
perlwin32 - Perl under WindowsNT [XXX and perhaps under Windows95]
=head1 SYNOPSIS
These are instructions for building Perl under WindowsNT (versions
3.51 or 4.0), using Visual C++.
=head1 DESCRIPTION
Before you start, you should glance through the README file
found in the top-level directory where the Perl distribution
was extracted. Make sure you read and understand the terms under
which this software is being distributed.
Also make sure you read the L<BUGS AND CAVEATS> section below for the
known limitations of this port.
The INSTALL file in the perl top-level has much information that is
only relevant to people building Perl on Unix-like systems. In
particular, you can safely ignore any information that talks about
"Configure".
You should probably also read the README.os2 file, which gives a
different set of rules to build a Perl that will work on Win32
platforms. That method will probably enable you to build a more
Unix-compatible perl, but you will also need to download and use
various other support software described in that file.
This set of instructions is meant to describe a so-called "native"
port of Perl to Win32 platforms. The resulting Perl requires no
additional software to run (other than what came with your operating
system). Currently, this port is only capable of using Microsoft's
Visual C++ compiler. The ultimate goal is to support the other major
compilers that can be used on the platforms.
=head2 Setting Up
=over 4
=item *
Use the default "cmd" shell that comes with NT. In particular, do
*not* use the 4DOS/NT shell. The Makefile has commands that are not
compatible with that shell.
=item *
Run the VCVARS32.BAT file usually found somewhere like C:\MSDEV4.2\BIN.
This will set your build environment.
=item *
Depending on how you extracted the distribution, you have to make sure
all the files are writable by you. The easiest way to make sure of
this is to execute:
attrib -R *.* /S
from the perl toplevel directory. You don't I<have> to do this if you
used the right tools to extract the files in the standard distribution,
but it doesn't hurt to do so.
=back
=head2 Building and Installation
=over 4
=item *
The "win32" directory contains *.mak files for use with the NMAKE that
comes with Visual C++ ver. 4.0 and above. If you wish to build perl
using Visual C++ versions between 2.0 and 4.0, do the following two
additional steps (these steps are not required if you are
using Visual C++ versions 4.0 and above):
=over 8
=item 1.
Overwrite the *.mak files in the win32 subdirectory with the versions
in the win32\VC-2.0 directory.
=item 2.
Reset your INCLUDE environment variable to the MSVC include directory.
For example:
set INCLUDE=E:\MSVC20\INCLUDE
This must have only one directory (a list of directories will not work).
VCVARS32.BAT may put multiple locations in there, which is why this step
is required.
=back
=item *
Make sure you are in the "win32" subdirectory under the perl toplevel.
=item *
Type "nmake" while in the "win32" subdirectory. This should build
everything. Specifically, it will create perl.exe, perl.dll, and
perlglob.exe at the perl toplevel, and various other extension dll's
under the lib\auto directory. If the make fails for any reason, make
sure you have done the previous steps correctly.
=item *
Type "nmake install". This will put the newly built perl and the
libraries under C:\PERL. If you want to alter this location, to say,
D:\FOO\PERL, you will have to say:
nmake install INST_TOP=D:\FOO\PERL
instead. To use the Perl you just installed, make sure you set your
PATH environment variable to C:\PERL\BIN (or D:\FOO\PERL\BIN).
=back
=head2 Testing
Type "nmake test". This will run most of the tests from the
testsuite (many tests will be skipped, and some tests will fail).
Most failures are due to UNIXisms in the standard perl testsuite.
To get a more detailed breakdown of the tests that failed, say:
cd ..\t
.\perl harness
This should produce a summary very similar to the following:
Failed Test Status Wstat Total Fail Failed List of failed
------------------------------------------------------------------------------
io/fs.t 26 16 61.54% 1-5, 7-11, 16-18, 23-25
lib/anydbm.t 12 1 8.33% 2
lib/findbin.t 1 1 100.00% 1
lib/sdbm.t 12 1 8.33% 2
op/magic.t 28 1 3.57% 16
op/mkdir.t 7 2 28.57% 3, 7
op/runlevel.t 8 1 12.50% 4
op/stat.t 56 3 5.36% 2-3, 20
op/taint.t 98 20 20.41% 1-6, 14, 16, 19-21, 24, 26, 35-3
pragma/locale.t 98 40 40.82% 1, 13-14, 21-27, 33, 39, 45-53,
Failed 10/149 test scripts, 93.29% okay. 86/3871 subtests failed, 97.78% okay.
Check if any additional tests other than the ones shown here
failed. The standard testsuite will ultimately be modified so
that the testsuite avoids running irrelevant tests on Win32.
=head1 BUGS AND CAVEATS
This is still very much an experimental port, and should be considered
alpha quality software. You can expect changes in virtually all of
these areas: build process, installation structure, supported
utilities/modules, and supported perl functionality. Specifically,
functionality that supports the Win32 environment may ultimately
be supported as either core modules or extensions.
Many tests from the standard testsuite either fail or produce different
results under this port. Most of the problems fall under one of these
categories
=over 8
=item *
C<stat()> and C<lstat()> functions may not behave as documented. They
may return values that bear no resemblance to those reported on Unix
platforms, and some fields may be completely bogus.
=item *
The following functions are currently unavailable: C<fork()>, C<exec()>,
C<dump()>, C<kill()>, C<chown()>, C<link()>, C<symlink()>, C<chroot()>,
C<setpgrp()>, C<getpgrp()>, C<setpriority()>, C<getpriority()>,
C<syscall()>, C<fcntl()>, C<flock()>. This list is possibly incomplete.
=item *
Various C<socket()> related calls are supported, but they may not
behave as on Unix platforms.
=item *
The four-argument C<select()> call is only supported on sockets.
=item *
The behavior of C<system()> or the C<qx[]> operator (a.k.a. "backticks"),
when used to call interactive commands, is ill-defined.
=item *
C<$!> doesn't work reliably yet.
=item *
Building modules available on CPAN is mostly supported, but this
hasn't been tested much yet. Expect strange problems, and be
prepared to deal with the consequences.
=item *
C<utime()>, C<times()> and process-related functions may not
behave as described in the documentation, and some of the
returned values or effects may be bogus.
=item *
Signal handling may not behave as on Unix platforms.
=item *
File globbing may not behave as on Unix platforms.
=item *
Not all of the utilities that come with the Perl distribution
are supported yet.
=back
Please send detailed descriptions of any problems and solutions that
you may find to <F<perlbug@perl.com>>, along with the output produced
by C<perl -V>.
=head1 AUTHORS
=over 4
=item Gary Ng <F<71564.1743@CompuServe.COM>>
=item Gurusamy Sarathy <F<gsar@umich.edu>>
=item Nick Ing-Simmons <F<nick@ni-s.u-net.com>>
=back
=head1 SEE ALSO
L<perl>
=head1 HISTORY
This port was originally contributed by Gary Ng around 5.003_24,
and borrowed from the Hip Communications port that was available
at the time.
Nick Ing-Simmons and Gurusamy Sarathy have made numerous and
sundry hacks since then.
Last updated: 19 March 1997
=cut
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