loading a module dependant on the OS

[Guest]

I have a Perl script which runs under Windows and uses the module
Win32:rocess, I now have a need to run this on Linux.

I can do produce two scripts on for each platform, which would be a pain to
maintane.

My question being how can I have a script on Linus that has

use Win32:rocess;

since this module does not exist I get a compilation error. I thought I
could use the $^O variable but my little knowledge fails to supply the
answer.

I assume this is a common problem so will have an answer. If you can point
me in the direction of a README or HOW_TO document I would be greatful.

Richard.

 

[Brian McCauley]

use Win32:rocess;

since this module does not exist I get a compilation error. I thought I
could use the $^O variable but my little knowledge fails to supply the
answer.

Since you have a question about use please read at least the first
paragraph of:

perldoc -f use

Write the "use" out long-hand and then apply the knowledge already
have. That should supply the answer.

Surely this should be in the FAQ!

--
\\ ( )
. _\\__[oo
.__/ \\ /\@
. l___\\
# ll l\\
###LL LL\\

 

[Rohan Romanus Almeida]

use Win32:rocess;

since this module does not exist I get a compilation error. I thought I
could use the $^O variable but my little knowledge fails to supply the
answer.

You can do an "eval" before the use.

Look at this example:
<code>
$useReadKey = 0;
eval q/use Term::ReadKey/;
if (!$@) {
# Term-ReadKey module is installed
$useReadKey = 1;
}
</code>

 

[Gunnar Hjalmarsson]

use Win32:rocess;

since this module does not exist I get a compilation error. I
thought I could use the $^O variable

You can:

BEGIN { require Win32:rocess if $^O eq 'MSWin32' }

/ Gunnar

 

[Guest]

Thanks for the solution I forgot all about eval.

Richard.

 

[Guest]

Oh wow that was so easy, thanks.

I'll go read the camel book again.

Richard.