$ perl -e 'system "pdftotext -nodiag -layout -enc UTF-8 test.pdf -"'
Test for PM 11148715

$ perl -e 'print `pdftotext -nodiag -layout -enc UTF-8 test.pdf -`'
Test for PM 11148715

##</code><code>##

#!/usr/bin/env perl

use strict;
use warnings;

use IPC::System::Simple 'capturex';

my $p2t_exe = 'C:/cygwin64/bin/pdftotext.exe';
my $pdf_doc = 'test.pdf';

print capturex(
    $p2t_exe => qw{-nodiag -layout -enc UTF-8}, $pdf_doc, '-'
);

##</code><code>##

$ ./p2t_capturex.pl
Test for PM 11148715

##</code><code>##

$ ls -i1 `which pdftotext` C:/cygwin64/bin/pdftotext.exe
844424931368301 /usr/bin/pdftotext
844424931368301 C:/cygwin64/bin/pdftotext.exe