diff --git a/README.md b/README.md
index 163bf03..075fd9a 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,5 @@
 # h5utils
 
+h5utils is a set of utilities for visualization and conversion of scientific data in the free, portable HDF5 format.
+Besides providing a simple tool for batch visualization as PNG images, h5utils also includes programs to convert HDF5 datasets into the formats required by other free visualization software (e.g. plain text, Vis5d, and VTK).
+
diff --git a/h5utils-1.12.1-libpng-1.5.patch b/h5utils-1.12.1-libpng-1.5.patch
new file mode 100644
index 0000000..e611310
--- /dev/null
+++ b/h5utils-1.12.1-libpng-1.5.patch
@@ -0,0 +1,43 @@
+Fix build with png-1.5.
+
+https://bugs.gentoo.org/show_bug.cgi?id=378919
+
+Patch stolen from NetBSD
+--- writepng.c
++++ writepng.c
+@@ -240,6 +240,8 @@ void writepng(char *filename,
+      double skewsin = sin(skew), skewcos = cos(skew);
+      REAL minoverlay = 0, maxoverlay = 0;
+      png_byte mask_byte;
++     png_colorp palette = NULL;
++
+ 
+      /* we must use direct color for translucent overlays */
+      if (overlay)
+@@ -309,7 +311,7 @@ void writepng(char *filename,
+      }
+      /* Set error handling.  REQUIRED if you aren't supplying your own *
+       * error hadnling functions in the png_create_write_struct() call. */
+-     if (setjmp(png_ptr->jmpbuf)) {
++     if (setjmp(png_jmpbuf(png_ptr))) {
+ 	  /* If we get here, we had a problem reading the file */
+ 	  fclose(fp);
+ 	  png_destroy_write_struct(&png_ptr, (png_infopp) NULL);
+@@ -334,8 +336,6 @@ void writepng(char *filename,
+ 		       PNG_INTERLACE_NONE,
+ 		       PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
+      else {
+-	  png_colorp palette;
+-
+ 	  png_set_IHDR(png_ptr, info_ptr, width, height, 8 /* bit_depth */ ,
+ 		       PNG_COLOR_TYPE_PALETTE,
+ 		       PNG_INTERLACE_NONE,
+@@ -434,7 +434,7 @@ void writepng(char *filename,
+      png_write_end(png_ptr, info_ptr);
+ 
+      /* if you malloced the palette, free it here */
+-     free(info_ptr->palette);
++     free(palette);
+ 
+      /* if you allocated any text comments, free them here */
+ 
diff --git a/h5utils.spec b/h5utils.spec
new file mode 100644
index 0000000..6b2ed00
--- /dev/null
+++ b/h5utils.spec
@@ -0,0 +1,61 @@
+Name:          h5utils
+Version:       1.12.1
+Release:       1mamba
+Summary:       A set of utilities for visualization and conversion of scientific data in the free, portable HDF5 format
+Group:         Applications/Scientific
+Vendor:        openmamba
+Distribution:  openmamba
+Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
+URL:           http://ab-initio.mit.edu/wiki/index.php/H5utils
+Source:        http://ab-initio.mit.edu/h5utils/h5utils-%{version}.tar.gz
+Patch0:        h5utils-1.12.1-libpng-1.5.patch
+License:       GPL
+## AUTOBUILDREQ-BEGIN
+BuildRequires: glibc-devel
+BuildRequires: libhdf5-devel
+BuildRequires: libpng-devel
+BuildRequires: libz-devel
+## AUTOBUILDREQ-END
+BuildRoot:     %{_tmppath}/%{name}-%{version}-root
+
+%description
+h5utils is a set of utilities for visualization and conversion of scientific data in the free, portable HDF5 format.
+Besides providing a simple tool for batch visualization as PNG images, h5utils also includes programs to convert HDF5 datasets into the formats required by other free visualization software (e.g. plain text, Vis5d, and VTK).
+
+%debug_package
+
+%prep
+%setup -q
+%patch0 -p0
+
+%build
+%configure
+%make
+
+%install
+[ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
+%makeinstall
+
+%clean
+[ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
+
+%files
+%defattr(-,root,root)
+%{_bindir}/h5fromtxt
+%{_bindir}/h5topng
+%{_bindir}/h5totxt
+%{_bindir}/h5tovtk
+%{_libdir}/octave/*/site/oct/*-openmamba-linux-gnu/h5read.oct
+%dir %{_datadir}/h5utils
+%dir %{_datadir}/h5utils/colormaps
+%{_datadir}/h5utils/colormaps/*
+%{_mandir}/man1/h5fromtxt.1*
+%{_mandir}/man1/h5topng.1*
+%{_mandir}/man1/h5totxt.1*
+%{_mandir}/man1/h5tovtk.1*
+%doc AUTHORS COPYING
+#%doc ChangeLog NEWS README
+
+%changelog
+* Tue Jan 28 2014 Silvan Calarco <silvan.calarco@mambasoft.it> 1.12.1-1mamba
+- package created using the webbuild interface