Hi Johan,
In a message dated 10/18/2007 11:34:29 AM Eastern Daylight Time,
[EMAIL PROTECTED] writes:
> I have a Perl application that should work on both Windows and Linux.
> On Windows I use some of the Windows-specific modules, e.g.
> "Win32API::File". So my code have things like:
>
> 1) "use Win32API::File qw( :ALL ) "
> 2) use of "constans" like GENERIC_WRITE and FILE_SHARE_DELETE.
> 3) calls to functions like Win32::File::CreateFile
>
> In all my Perl-files i have "use strict". My problems at first on Linux are:
>
> - the lines "use XYZ" where XYZ is a Windows module can't be used on
> Linux. Somehow they have to be skipped.
>
The "standard" solution (published in The Perl Journal in 1999), which I got
first from Bruce Winter's Misterhouse but have since used in several locations
and articles. It extends easily to handle several sets of "parallel" modules:
use strict;
use vars qw($OS_win);
BEGIN {
$OS_win = ($^O eq "MSWin32") ? 1 : 0;
print "Perl version: $]\n";
print "OS version: $^O\n";
# This must be in a BEGIN in order for the 'use' to be
conditional
if ($OS_win) {
print "Loading Windows module\n";
eval "use Win32::SerialPort";
die "[EMAIL PROTECTED]" if ($@);
}
else {
print "Loading Unix module\n";
eval "use Device::SerialPort";
die "[EMAIL PROTECTED]" if ($@);
}
} # End BEGIN
-bill
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