Doesn't build on NetBSD

[nigelhorne]

`
$ cpan -i Sys::Info
Loading internal logger. Log::Log4perl recommended for better logging
CPAN: Term::ANSIColor loaded ok (v4.06)
CPAN: CPAN::SQLite loaded ok (v0.217)
Database was generated on Wed, 17 Jul 2019 04:37:21 GMT
Running install for module 'Sys::Info'
CPAN: LWP::UserAgent loaded ok (v6.39)
Fetching with LWP:
http://www.cpan.org/authors/id/B/BU/BURAK/Sys-Info-0.7811.tar.gz
CPAN: YAML::Any loaded ok (v1.29)
CPAN: Digest::SHA loaded ok (v6.02)
Fetching with LWP:
http://www.cpan.org/authors/id/B/BU/BURAK/CHECKSUMS
CPAN: Compress::Zlib loaded ok (v2.084)
Checksum for /home/njh/.cpan/sources/authors/id/B/BU/BURAK/Sys-Info-0.7811.tar.gz ok
CPAN: CPAN::Meta::Requirements loaded ok (v2.140)
CPAN: Parse::CPAN::Meta loaded ok (v2.150010)
CPAN: CPAN::Meta loaded ok (v2.150010)
CPAN: Module::CoreList loaded ok (v5.20190524)
Configuring B/BU/BURAK/Sys-Info-0.7811.tar.gz with Makefile.PL
CPAN: CPAN::Reporter loaded ok (v1.2018)
Checking if your kit is complete...
Looks good
Warning: prerequisite Sys::Info::Driver::BSD 0.78 not found.
Warning: prerequisite Test::Sys::Info 0.20 not found.
Generating a Unix-style Makefile
Writing Makefile for Sys::Info
Writing MYMETA.yml and MYMETA.json
(/home/njh/perl5/perlbrew/perls/perl-5.31.0/bin/perl5.31.0 Makefile.PL exited with 0)
CPAN::Reporter: Makefile.PL result is 'pass', No errors.
BURAK/Sys-Info-0.7811.tar.gz
/home/njh/perl5/perlbrew/perls/perl-5.31.0/bin/perl5.31.0 Makefile.PL -- OK
Running make for B/BU/BURAK/Sys-Info-0.7811.tar.gz
---- Unsatisfied dependencies detected during ----
---- BURAK/Sys-Info-0.7811.tar.gz ----
Sys::Info::Driver::BSD [requires]
Test::Sys::Info [build_requires]
Running install for module 'Sys::Info::Driver::BSD'
Fetching with LWP:
http://www.cpan.org/authors/id/B/BU/BURAK/Sys-Info-Driver-BSD-0.7801.tar.gz
Checksum for /home/njh/.cpan/sources/authors/id/B/BU/BURAK/Sys-Info-Driver-BSD-0.7801.tar.gz ok
CPAN: Module::Build loaded ok (v0.4229)
Configuring B/BU/BURAK/Sys-Info-Driver-BSD-0.7801.tar.gz with Build.PL
Checking prerequisites...
requires:
! BSD::Sysctl is not installed
build_requires:
! Test::Sys::Info is not installed

ERRORS/WARNINGS FOUND IN PREREQUISITES. You may wish to install the versions
of the modules indicated above before proceeding with this installation

Created MYMETA.yml and MYMETA.json
Creating new 'Build' script for 'Sys-Info-Driver-BSD' version '0.7801'
(/home/njh/perl5/perlbrew/perls/perl-5.31.0/bin/perl5.31.0 Build.PL exited with 0)
CPAN::Reporter: Build.PL result is 'pass', No errors.
BURAK/Sys-Info-Driver-BSD-0.7801.tar.gz
/home/njh/perl5/perlbrew/perls/perl-5.31.0/bin/perl5.31.0 Build.PL -- OK
Running Build for B/BU/BURAK/Sys-Info-Driver-BSD-0.7801.tar.gz
---- Unsatisfied dependencies detected during ----
---- BURAK/Sys-Info-Driver-BSD-0.7801.tar.gz ----
BSD::Sysctl [requires]
Test::Sys::Info [build_requires]
Running install for module 'BSD::Sysctl'
Fetching with LWP:
http://www.cpan.org/authors/id/D/DL/DLAND/BSD-Sysctl-0.11.tar.gz
Fetching with LWP:
http://www.cpan.org/authors/id/D/DL/DLAND/CHECKSUMS
Checksum for /home/njh/.cpan/sources/authors/id/D/DL/DLAND/BSD-Sysctl-0.11.tar.gz ok
Configuring D/DL/DLAND/BSD-Sysctl-0.11.tar.gz with Makefile.PL
OS unsupported (netbsd). Here's a nickel, go buy yourself a real OS.
(/home/njh/perl5/perlbrew/perls/perl-5.31.0/bin/perl5.31.0 Makefile.PL exited with 65280)
CPAN::Reporter: Makefile.PL result is 'na', This platform is not supported.
CPAN::Reporter: preparing a CPAN Testers report for BSD-Sysctl-0.11

CPAN::Reporter: this appears to be a duplicate report for the PL phase:
NA BSD-Sysctl-0.11 amd64-netbsd 7.1.2

Test report will not be sent.

No 'Makefile' created DLAND/BSD-Sysctl-0.11.tar.gz
/home/njh/perl5/perlbrew/perls/perl-5.31.0/bin/perl5.31.0 Makefile.PL -- NOT OK
Stopping: 'install' failed for 'BSD::Sysctl'.
`