diff --git a/rpm/pg_ivm.spec b/rpm/pg_ivm.spec
new file mode 100644
index 0000000..a34edef
--- /dev/null
+++ b/rpm/pg_ivm.spec
@@ -0,0 +1,88 @@
+# How to build RPM:
+#
+#   rpmbuild -ba pgpool.spec --define="pgpool_version 3.4.0" --define="pg_version 93" --define="pghome /usr/pgsql-9.3" --define="dist .rhel6" --define="pgsql_ver 93"
+
+%global sname pg_ivm
+
+%if 0%{?rhel} && 0%{?rhel} == 7
+%global llvm  1
+%endif
+%if 0%{?rhel} && 0%{?rhel} >= 8
+%global llvm  1
+%endif
+
+Summary:	PostgreSQL-based distributed RDBMS
+Name:		%{sname}_%{pgmajorversion}
+Version:	1.0	
+Release:	1%{dist}
+License:    BSD
+Vendor:     IVM Development Group
+URL:		https://github.com/sraoss/%{sname}
+Source0:	https://github.com/sraoss/%{sname}/archive/v%{version}.tar.gz
+BuildRequires:	postgresql%{pgmajorversion}-devel
+Requires:	postgresql%{pgmajorversion}-server
+
+%description
+pg_ivm provides Incremnetal View Maintenance feature for
+PostgreSQL. Incremental View Maintenance (IVM) is a way to make
+materialized views up-to-date in which only incremental changes
+are computed and applied on views rather than recomputing. 
+
+
+%if %llvm
+%package llvmjit
+Summary:	Just-in-time compilation support for pg_ivm
+Requires:	%{name}%{?_isa} = %{version}-%{release}
+%if 0%{?rhel} && 0%{?rhel} == 7
+# Packages come from EPEL and SCL:
+BuildRequires:	llvm5.0-devel >= 5.0 llvm-toolset-7-clang >= 4.0.1
+%endif
+%if 0%{?rhel} && 0%{?rhel} >= 8
+# Packages come from Appstream:
+BuildRequires:	llvm-devel >= 8.0.1 clang-devel >= 8.0.1
+%endif
+
+%description llvmjit
+This packages provides JIT support for pg_ivm 
+%endif
+
+%prep
+%setup -q -n %{sname}-%{version}
+
+%build
+%configure PG_CONFIG=%{pginstdir}/bin/pg_config
+make %{?_smp_mflags}
+
+%install
+%make_install
+# Install documentation with a better name:
+%{__mkdir} -p %{buildroot}%{pginstdir}/doc/extension
+%{__cp} README.md %{buildroot}%{pginstdir}/doc/extension/README-%{sname}.md
+
+%clean
+%{__rm} -rf %{buildroot}
+
+%files
+%defattr(-,root,root,-)
+%if 0%{?rhel} && 0%{?rhel} <= 6
+%doc LICENSE
+%else
+%license LICENSE
+%endif
+%doc %{pginstdir}/doc/extension/README-%{sname}.md
+%{pginstdir}/lib/%{sname}.so
+%{pginstdir}/share/extension/%{sname}-*.sql
+%{pginstdir}/share/extension/%{sname}.control
+
+%if %llvm
+%files llvmjit
+    %{pginstdir}/lib/bitcode/%{sname}*.bc
+    %{pginstdir}/lib/bitcode/%{sname}/*.bc
+    %{pginstdir}/lib/bitcode/%{sname}/*/*.bc
+    %{pginstdir}/lib/bitcode/columnar/*.bc
+%endif
+
+%changelog
+* Fri Mar 25 2016 - Yugo Nagata <nagata@sraoss.co.jp> 1.0-1
+- Initial pg_ivm 1.0 RPM
+from IVM Development Group