diff --git a/fftw3.spec b/fftw3.spec
index 8ac4124..79e52d7 100644
--- a/fftw3.spec
+++ b/fftw3.spec
@@ -66,6 +66,8 @@ data, and of arbitrary input size.
 %package -n libfftw3_threads3
 Summary:        Discrete Fourier Transform (DFT) C subroutine library
 Group:          Productivity/Scientific/Math
+Provides:       fftw3-threads = %{version}-%{release}
+Obsoletes:      fftw3-threads < 3.3
 # libfftw3_threads.so does not have a DT_NEEDED entry for fftw symbols, since it
 # may be used with either libfftw3.so or libfftw3f.so. Hence, manual Requires.
 #Requires:       libfftw3-3 = %%{version}
@@ -90,6 +92,8 @@ data, and of arbitrary input size.
 %package -n libfftw3_omp3
 Summary:        Discrete Fourier Transform (DFT) C subroutine library
 Group:          Productivity/Scientific/Math
+Provides:       fftw3-openmp = %{version}-%{release}
+Obsoletes:      fftw3-openmp < 3.3
 # Same as libfftw3_threads.so: manual Requires for fftw3 main lib
 #Requires:       libfftw3-3 = %%{version}
 
@@ -115,6 +119,8 @@ data, and of arbitrary input size.
 %package -n libfftw3_mpi3
 Summary:        Discrete Fourier Transform (DFT) C subroutine library
 Group:          Productivity/Scientific/Math
+Provides:       fftw3-mpi = %{version}-%{release}
+Obsoletes:      fftw3-mpi < 3.3
 # Same as libfftw3_threads.so: manual Requires for fftw3 main lib
 #Requires:       libfftw3-3 = %%{version}
 #Requires:       openmpi
@@ -140,8 +146,6 @@ data, and of arbitrary input size.
 
 %prep
 %setup -q -n fftw-%{version}
-# %patch
-# autoreconf --force --install
 
 %build
 %configure --enable-shared --enable-threads --enable-openmp \
@@ -177,7 +181,7 @@ make %{?_smp_mflags}
 # remove unneeded files
 rm -f %{buildroot}%{_libdir}/lib*.*a
 
-# gzip -9nf %{buildroot}%{_infodir}/*.info*
+# gzip -9nf %%{buildroot}%%{_infodir}/*.info*
 rm -f %{buildroot}%{_infodir}/dir
 
 # remove Makefiles in doc directory at last