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diff --git a/check_smstools/bin/check_smstools b/check_smstools/bin/check_smstools
index a7a0336..707d289 100755
--- a/check_smstools/bin/check_smstools
+++ b/check_smstools/bin/check_smstools
@@ -13,9 +13,31 @@
use strict;
use warnings;
-use Nagios::Plugin;
use POSIX;
+sub load_module {
+ my @names = @_;
+ my $module;
+ for my $name (@names) {
+ my $file = $name;
+ # requires need either a bare word or a file name
+ $file =~ s{::}{/}gsxm;
+ $file .= '.pm';
+ eval {
+ require $file;
+ $name->import();
+ $module = $name;
+ };
+ last if $module;
+ }
+ return $module;
+}
+
+my $plugin_module;
+BEGIN {
+ $plugin_module = load_module( 'Monitoring::Plugin', 'Nagios::Plugin' );
+}
+
# Define regular expressions used to find the correct lines from
# the status file
my $signal_command = 'AT\+CSQ';
@@ -45,7 +67,7 @@ my $timestamp;
my $np;
sub init_plugin {
- $np = Nagios::Plugin->new(usage => "usage: %s");
+ $np = $plugin_module->new(usage => "usage: %s");
$np->add_arg(
spec => 'warning|w=f',
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