Modernize a spec file

.rpmlint

@@ -1,2 +0,0 @@
-from Config import *
-addFilter("spelling-error .* (freemem|totalmem)");

perl-Sys-MemInfo.spec

@@ -1,14 +1,19 @@
 Name:           perl-Sys-MemInfo
 Version:        0.99
-Release:        14%{?dist}
+Release:        15%{?dist}
 Summary:        Memory information as Perl module
 License:        GPL+ or Artistic
 URL:            https://metacpan.org/release/Sys-MemInfo
 Source0:        https://cpan.metacpan.org/authors/id/S/SC/SCRESTO/Sys-MemInfo-%{version}.tar.gz
+BuildRequires:  coreutils
+BuildRequires:  findutils
 BuildRequires:  gcc
+BuildRequires:  make
 BuildRequires:  perl-devel
 BuildRequires:  perl-generators
-BuildRequires:  perl(ExtUtils::MakeMaker)
+BuildRequires:  perl-interpreter
+BuildRequires:  perl(:VERSION) >= 5.6
+BuildRequires:  perl(ExtUtils::MakeMaker) >= 6.76
 BuildRequires:  perl(File::Copy)
 # Run-time:
 BuildRequires:  perl(DynaLoader)
@@ -16,9 +21,9 @@ BuildRequires:  perl(Exporter)
 BuildRequires:  perl(strict)
 BuildRequires:  perl(warnings)
 # Tests:
-BuildRequires:  perl(Test::More)
 BuildRequires:  perl(Data::Dumper)
-Requires:       perl(:MODULE_COMPAT_%(eval "`%{__perl} -V:version`"; echo $version))
+BuildRequires:  perl(Test::More)
+Requires:       perl(:MODULE_COMPAT_%(eval "`perl -V:version`"; echo $version))
 
 %{?perl_default_filter}
 
@@ -30,13 +35,12 @@ bytes in totalmem and freemem variables.
 %setup -q -n Sys-MemInfo-%{version}
 
 %build
-%{__perl} Makefile.PL INSTALLDIRS=vendor OPTIMIZE="$RPM_OPT_FLAGS"
-make %{?_smp_mflags}
+perl Makefile.PL INSTALLDIRS=vendor NO_PACKLIST=1 NO_PERLLOCAL=1 OPTIMIZE="$RPM_OPT_FLAGS"
+%{make_build}
 
 %install
-make pure_install DESTDIR=$RPM_BUILD_ROOT
-find $RPM_BUILD_ROOT -type f -name .packlist -exec rm -f {} \;
-find $RPM_BUILD_ROOT -type f -name '*.bs' -size 0 -exec rm -f {} \;
+%{make_install}
+find $RPM_BUILD_ROOT -type f -name '*.bs' -size 0 -delete
 %{_fixperms} $RPM_BUILD_ROOT/*
 
 %check
@@ -50,6 +54,9 @@ make test
 %{_mandir}/man3/*
 
 %changelog
+* Thu Oct 29 2020 Petr Pisar <ppisar@redhat.com> - 0.99-15
+- Modernize a spec file
+
 * Tue Jul 28 2020 Fedora Release Engineering <releng@fedoraproject.org> - 0.99-14
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild