Ah! I don't know why I didn't see that. I could just use a separate MyLoggingModule.pm:

package MyLoggingModule;

use strict;
use warnings;

# ----------
my $logfile;

# ----------
sub init {
    my ($logfile_name) = @_;
    open($logfile, '>>', $logfile_name)
      or die "Couldn't open log file.";
}

sub loggit {
    my ($log_msg) = @_;
    print {$logfile} $log_msg, "\n";
}

# ----------
1;
[download]

and then my script looks like this:

#!/opt/perl/bin/perl

use strict;
use warnings;

use lib '.';
use MyLoggingModule;
use MyModule;
use MyOtherModule;

# ----------
MyLoggingModule::init('blah.log');
MyLoggingModule::loggit("Doing something in the script...");
MyModule::foo();
MyOtherModule::bar();
MyLoggingModule::loggit("My work here is done.");
[download]

and my modules look like this:

package MyModule;

use strict;
use warnings;

use lib '.';
use MyLoggingModule;

# ----------
sub foo {
    # ...
    # write a log message.
    MyLoggingModule::loggit("Doing some work in MyModule::foo()");
    # ...
}

1;
[download]

and this:

package MyOtherModule;

use strict;
use warnings;

use lib '.';
use MyLoggingModule;

# ----------
sub bar {
    # ...
    # write a log message.
    MyLoggingModule::loggit("Doing some work in MyOtherModule::bar()")
+;
    # ...
}

1;
[download]

Thanks!

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