diff --git a/libpst.spec b/libpst.spec
index 899ea33..3a813f8 100644
--- a/libpst.spec
+++ b/libpst.spec
@@ -3,13 +3,15 @@ Name:               libpst
 Version:            0.6.74
 Release:            1%{?dist}
 License:            GPLv2+
-Source:             http://www.five-ten-sg.com/%{name}/packages/%{name}-%{version}.tar.gz
 URL:                http://www.five-ten-sg.com/%{name}/
-Requires:           ImageMagick libgsf gettext
-Requires:           %{name}-libs = %{version}-%{release}
+Source:             %{url}/packages/%{name}-%{version}.tar.gz
+
 BuildRequires:      libtool gcc-c++
 BuildRequires:      ImageMagick gd-devel zlib-devel boost-devel libgsf-devel gettext-devel
 BuildRequires:      python3 python3-devel boost-python3 boost-python3-devel
+
+Requires:           ImageMagick%{?_isa} libgsf gettext
+Requires:           %{name}-libs%{?_isa} = %{version}-%{release}
 Requires:           boost-python3
 
 %description
@@ -29,10 +31,9 @@ utilities.
 
 
 %package -n python3-%{name}
-Requires:           python3
-Provides:           %{name}-python = %{version}-%{release}
 Summary:            Python bindings for libpst
-Requires:           %{name}-libs = %{version}-%{release}
+Provides:           %{name}-python = %{version}-%{release}
+Requires:           %{name}-libs%{?_isa} = %{version}-%{release}
 
 %global __provides_exclude_from %{?__provides_exclude_from:%__provides_exclude_from|}^%{python_sitearch}/_.*\.so$
 
@@ -45,7 +46,7 @@ from Python code.
 %package devel
 Summary:            Library links and header files for libpst application development
 Requires:           pkgconfig
-Requires:           %{name}-libs = %{version}-%{release}
+Requires:           %{name}-libs%{?_isa} = %{version}-%{release}
 
 %description devel
 The libpst-devel package contains the library links and header files
@@ -78,55 +79,48 @@ libpst utilities.
 
 
 %build
-autoreconf -v -f -i
-%configure --enable-libpst-shared
+autoreconf -fiv
+%configure --enable-libpst-shared \
+           --with-boost-python=boost_python%{python3_version_nodots}
 %make_build
 
 
 %install
 %make_install
-rm $RPM_BUILD_ROOT%{_libdir}/libpst.la
-rm $RPM_BUILD_ROOT%{_libdir}/libpst.a
-mv $RPM_BUILD_ROOT%{_datadir}/doc/%{name}-%{version} $RPM_BUILD_ROOT%{_datadir}/doc/%{name}
+#Remove libtool archives.
+find %{buildroot} -name '*.la' -or -name '*.a' | xargs rm -f
+mv %{buildroot}%{_datadir}/doc/%{name}-%{version} %{buildroot}%{_datadir}/doc/%{name}
 
 
 %ldconfig_scriptlets libs
 
 
 %files
-%defattr(-,root,root,-)
 %{_bindir}/*
 %{_mandir}/man1/*
 %{_mandir}/man5/*
 
 
 %files libs
-%defattr(-,root,root,-)
 %{_libdir}/libpst.so.*
 %doc COPYING
 
 
 %files -n python3-%{name}
-%defattr(-,root,root,-)
 %{python3_sitearch}/_*.so
-%exclude %{python3_sitearch}/*.a
-%exclude %{python3_sitearch}/*.la
 
 
 %files devel
-%defattr(-,root,root,-)
 %{_libdir}/libpst.so
 %{_includedir}/%{name}-4/
 %{_libdir}/pkgconfig/libpst.pc
 
 
 %files devel-doc
-%defattr(-,root,root,-)
 %{_datadir}/doc/%{name}/devel/
 
 
 %files doc
-%defattr(-,root,root,-)
 %dir %{_datadir}/doc/%{name}/
 %{_datadir}/doc/%{name}/*.html
 %{_datadir}/doc/%{name}/AUTHORS