diff --git a/README.md b/README.md
index 09e95dd..69290c1 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,4 @@
 # perl-Alien-GMP
 
+Alien::GMP - Alien package for the GNU Multiple Precision library..
+
diff --git a/perl-Alien-GMP.spec b/perl-Alien-GMP.spec
new file mode 100644
index 0000000..732ebf5
--- /dev/null
+++ b/perl-Alien-GMP.spec
@@ -0,0 +1,57 @@
+%define perl_major_ver %(eval `perl -V:version`; echo ${version%*.[0-9]*}.0)
+
+Name:          perl-Alien-GMP
+Version:       1.16
+Release:       1mamba
+Summary:       Alien::GMP - Alien package for the GNU Multiple Precision library.
+Group:         System/Libraries/Perl
+Vendor:        openmamba
+Distribution:  openmamba
+Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
+URL:           https://www.cpan.org
+Source:        https://cpan.metacpan.org/authors/id/P/PL/PLICEASE/Alien-GMP-%{version}.tar.gz
+License:       GPL, Artistic
+## AUTOBUILDREQ-BEGIN
+BuildRequires: perl-Alien-Build
+BuildRequires: perl-devel
+## AUTOBUILDREQ-END
+BuildRequires: perl-FFI-CheckLib
+BuildRequires: perl-Test2-Suite
+Requires:      perl >= %perl_major_ver
+
+%description
+Alien::GMP - Alien package for the GNU Multiple Precision library..
+
+%prep
+%setup -q -n Alien-GMP-%{version}
+
+%build
+%{__perl} Makefile.PL PREFIX=%{_prefix} INSTALLDIRS=vendor OPTIMIZE="%{optflags}"
+
+%make
+%make test
+
+%install
+[ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
+%makeinstall_perl
+
+packlist=`find %{buildroot} -name .packlist`
+[ -z "$packlist" ] && exit 1 || cat $packlist | \
+   sed "s,%{buildroot},,g;s,.*/man/.*,&.gz,g" | \
+   sort -u > .packlist && rm -f $packlist
+
+strid=`echo $packlist | sed 's,.*auto\(.*\)/.packlist,\1,'`
+for dir in `find %{buildroot} -type d | grep $strid`; do
+   echo "%dir ${dir#%buildroot}" >> .packlist
+done
+
+%clean
+[ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
+
+%files -f .packlist
+%defattr(-,root,root)
+%doc LICENSE
+
+%changelog
+* Wed May 19 2021 Silvan Calarco <silvan.calarco@mambasoft.it> 1.16-1mamba
+- package created using the webbuild interface