diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..9072efc
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/B-COW-[0-9.]*.tar.gz
diff --git a/perl-B-COW.rpmlintrc b/perl-B-COW.rpmlintrc
new file mode 100644
index 0000000..3534559
--- /dev/null
+++ b/perl-B-COW.rpmlintrc
@@ -0,0 +1,8 @@
+from Config import *
+
+# It can be spelled naïve or naive
+addFilter("spelling-error %description -l en_US naïve")
+
+# The link error is because of a weak __cxa_finalize symbol
+# Weak symbols do not need to be fulfilled
+addFilter("library-not-linked-against-libc /.*/COW.so")
diff --git a/perl-B-COW.spec b/perl-B-COW.spec
new file mode 100644
index 0000000..92e53f9
--- /dev/null
+++ b/perl-B-COW.spec
@@ -0,0 +1,80 @@
+Name:		perl-B-COW
+Version:	0.004
+Release:	1%{?dist}
+Summary:	Additional B helpers to check Copy On Write status
+License:	GPL+ or Artistic
+URL:		https://metacpan.org/release/B-COW
+Source0:	https://cpan.metacpan.org/modules/by-module/B/B-COW-%{version}.tar.gz
+# Module Build
+BuildRequires:	coreutils
+BuildRequires:	findutils
+BuildRequires:	gcc
+BuildRequires:	make
+BuildRequires:	perl-devel
+BuildRequires:	perl-generators
+BuildRequires:	perl-interpreter
+BuildRequires:	perl(ExtUtils::MakeMaker)
+# Module Runtime
+BuildRequires:	perl(base)
+BuildRequires:	perl(Exporter)
+BuildRequires:	perl(strict)
+BuildRequires:	perl(warnings)
+BuildRequires:	perl(XSLoader)
+# Test Suite
+BuildRequires:	perl(Devel::Peek)
+BuildRequires:	perl(File::Spec)
+BuildRequires:	perl(Test::More)
+# Optional Tests
+BuildRequires:	perl(CPAN::Meta) >= 2.120900
+BuildRequires:	perl(CPAN::Meta::Prereqs)
+# Runtime
+Requires:	perl(:MODULE_COMPAT_%(eval "`perl -V:version`"; echo $version))
+
+# Don't "provide" private Perl libs
+%{?perl_default_filter}
+
+%description
+B::COW provides some naïve additional B helpers to check the Copy On Write
+(COW) status of one SvPV (a Perl string variable).
+
+A COWed SvPV is sharing its string (the PV) with other SvPVs. It's a (kind of)
+Read Only C string, which would be Copied On Write (COW). More than one SV can
+share the same PV, but when one PV needs to alter it, it would perform a copy
+of it, decreasing the COWREFCNT counter. One SV can then drop the COW flag when
+it's the only one holding a pointer to the PV. The COWREFCNT is stored at the
+end of the PV, after the null byte terminating the string. That value is
+limited to 255: when we reach 255, a new PV would be created.
+
+%prep
+%setup -q -n B-COW-%{version}
+
+%build
+perl Makefile.PL INSTALLDIRS=vendor OPTIMIZE="%{optflags}"
+make %{?_smp_mflags}
+
+%install
+make pure_install DESTDIR=%{buildroot}
+find %{buildroot} -type f -name .packlist -delete
+find %{buildroot} -type f -name '*.bs' -empty -delete
+%{_fixperms} -c %{buildroot}
+
+%check
+make test
+
+%files
+%license LICENSE
+%doc Changes examples/ README
+%{perl_vendorarch}/auto/B/
+%{perl_vendorarch}/B/
+%{_mandir}/man3/B::COW.3*
+
+%changelog
+* Fri Apr 24 2020 Paul Howarth <paul@city-fan.org> - 0.004-1
+- Update to 0.004
+  - Fix CowREFCNT issues on big endian
+
+* Tue Apr 21 2020 Paul Howarth <paul@city-fan.org> - 0.003-2
+- Sanitize for Fedora submission
+
+* Tue Apr 21 2020 Paul Howarth <paul@city-fan.org> - 0.003-1
+- Initial RPM version
diff --git a/sources b/sources
new file mode 100644
index 0000000..f4990ed
--- /dev/null
+++ b/sources
@@ -0,0 +1 @@
+SHA512 (B-COW-0.004.tar.gz) = 97beaac8056e4aaeafb535a8e69f103632eb3746fa815313f84612414081155ab640299c18b4cb7b9ff0f61263cc1b9ce25de3313bbefce318163902a4503292