diff --git a/.cvsignore b/.cvsignore
index e69de29..9d54fe8 100644
--- a/.cvsignore
+++ b/.cvsignore
@@ -0,0 +1,2 @@
+4.2r1-hrepack-patch.tar
+HDF4.2r1.tar.gz
diff --git a/hdf-4.2r1-configure.patch b/hdf-4.2r1-configure.patch
new file mode 100644
index 0000000..5bfc1c3
--- /dev/null
+++ b/hdf-4.2r1-configure.patch
@@ -0,0 +1,92 @@
+--- HDF4.2r1/configure.ac.orig	2005-07-15 14:52:14.000000000 -0600
++++ HDF4.2r1/configure.ac	2005-07-15 14:53:35.000000000 -0600
+@@ -528,7 +528,7 @@
+ dnl ======================================================================
+ 
+ AC_MSG_CHECKING([for math library support])
+-AC_TRY_LINK([#include <math.h>], [sqrt(37.927)],
++AC_TRY_LINK([#include <math.h>], [sinh(37.927)],
+             [AC_MSG_RESULT([yes])],
+             [AC_MSG_RESULT([no]); LIBS="$LIBS -lm"])
+ 
+--- HDF4.2r1/mfhdf/fortran/config/ftest-linux.f.orig	2005-02-08 20:04:07.000000000 -0700
++++ HDF4.2r1/mfhdf/fortran/config/ftest-linux.f	2005-07-15 15:37:22.000000000 -0600
+@@ -138,13 +138,13 @@
+       integer*2 shval(2)
+       integer i, j, k
+       character*31 varnam, attname(2,7), gattnam(2)
+-      byte bytval(2)
++      integer*1 bytval(2)
+       common /atts/attname, gattnam
+       integer*2 svalidrg(2)
+       real rvalidrg(2)
+       integer lvalidrg(2)
+       double precision dvalidrg(2)
+-      byte bvalidrg(2)
++      integer*1 bvalidrg(2)
+       character*31 gavalue(2), cavalue(2)
+       real epsilon
+ 
+@@ -337,7 +337,7 @@
+       real flval(2)
+       integer lngval(2)
+       integer*2 shval(2)
+-      byte bytval(2)
++      integer*1 bytval(2)
+       integer vartyp, nvdims, vdims(MAXVDIMS), nvatts
+ 
+       character*31 varnam, attname(2,7), gattnam(2)
+@@ -346,7 +346,7 @@
+       real rvalidrg(2)
+       integer lvalidrg(2)
+       double precision dvalidrg(2)
+-      byte bvalidrg(2)
++      integer*1 bvalidrg(2)
+       character*31 gavalue(2), cavalue(2)
+       real epsilon
+ 
+@@ -470,7 +470,7 @@
+       real rvalidrg(2)
+       integer lvalidrg(2)
+       double precision dvalidrg(2)
+-      byte bvalidrg(2)
++      integer*1 bvalidrg(2)
+ 
+ c     variable ids
+       integer  bid, sid, lid, fid, did, cid, chid
+@@ -883,7 +883,7 @@
+       integer itime, ilev, ilat, ilon
+ 
+ c     arrays of data values to be read
+-      byte barray(times), byval(times)
++      integer*1 barray(times), byval(times)
+       integer*2 sarray(times), shval(times)
+       integer larray(lats)
+       real farray(levels, lats, lons, times)
+@@ -1009,7 +1009,7 @@
+       integer bid, sid, lid, fid, did, cid, chid
+       common /vars/bid, sid, lid, fid, did, cid, chid
+ 
+-      byte bvalue
++      integer*1 bvalue
+       integer*2 svalue
+       integer lvalue
+       real fvalue
+@@ -1097,7 +1097,7 @@
+       integer count(MAXNCDIM)
+ 
+ c     arrays of data values to be written
+-      byte barray(times)
++      integer*1 barray(times)
+       integer*2 sarray(times)
+       integer larray(lats)
+       real farray(levels, lats, lons, times)
+@@ -1184,7 +1184,7 @@
+ 
+       integer lvalue
+       integer*2 svalue
+-      byte bvalue
++      integer*1 bvalue
+       double precision onethird
+       integer bid, sid, lid, fid, did, cid, chid
+       common /vars/bid, sid, lid, fid, did, cid, chid
diff --git a/hdf.spec b/hdf.spec
new file mode 100644
index 0000000..98ffabd
--- /dev/null
+++ b/hdf.spec
@@ -0,0 +1,77 @@
+Name: hdf
+Version: 4.2r1
+Release: 2%{?dist}
+Summary: A general purpose library and file format for storing scientific data
+License: BSD-ish
+Group: System Environment/Libraries
+URL: http://hdf.ncsa.uiuc.edu/HDF/
+Source0: ftp://ftp.ncsa.uiuc.edu/HDF/HDF/HDF_Current/src/HDF%{version}.tar.gz
+Source1: ftp://ftp.ncsa.uiuc.edu/HDF/HDF/HDF_Current/src/patches/4.2r1-hrepack-patch.tar
+Patch0: hdf-4.2r1-configure.patch
+BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
+BuildRequires: autoconf flex byacc libjpeg-devel zlib-devel
+BuildRequires: gcc-gfortran
+
+%description
+HDF is a general purpose library and file format for storing scientific data.
+HDF can store two primary objects: datasets and groups. A dataset is 
+essentially a multidimensional array of data elements, and a group is a 
+structure for organizing objects in an HDF file. Using these two basic 
+objects, one can create and store almost any kind of scientific data 
+structure, such as images, arrays of vectors, and structured and unstructured 
+grids. You can also mix and match them in HDF files according to your needs.
+
+%package devel
+Summary: HDF development files
+Group: Development/Libraries
+Requires: %{name} = %{version}-%{release}
+
+%description devel
+HDF development headers and libraries.
+
+%prep
+%setup -q -n HDF%{version}
+tar xf %{SOURCE1} --directory mfhdf/hrepack 
+mv mfhdf/hrepack/4.2r1-hrepack-patch/*.[ch] mfhdf/hrepack
+rm -r mfhdf/hrepack/4.2r1-hrepack-patch
+%patch0 -p1 -b .orig
+
+%build
+autoconf
+%configure F77=gfortran FFLAGS=-ffixed-line-length-none
+make
+
+%install
+rm -rf $RPM_BUILD_ROOT
+%makeinstall includedir=${RPM_BUILD_ROOT}%{_includedir}/%{name} \
+             libdir=$RPM_BUILD_ROOT%{_libdir}/%{name}
+#Don't conflict with netcdf
+rm $RPM_BUILD_ROOT%{_bindir}/nc* $RPM_BUILD_ROOT%{_mandir}/man1/nc*
+
+%check
+make check
+
+%clean
+rm -rf $RPM_BUILD_ROOT
+
+%post
+
+%postun
+
+%files
+%defattr(-,root,root,0755)
+%doc COPYING MANIFEST README release_notes/*.txt
+%{_bindir}/*
+%{_mandir}/man1/*.gz
+
+%files devel
+%defattr(-,root,root,0755)
+%{_includedir}/%{name}/
+%{_libdir}/%{name}/
+
+%changelog
+* Wed Jul 20 2005 Orion Poplawski <orion@cora.nwra.com> 4.2r1-2
+- Fix BuildRequires to have autoconf
+
+* Fri Jul 15 2005 Orion Poplawski <orion@cora.nwra.com> 4.2r1-1
+- inital package for Fedora Extras
diff --git a/sources b/sources
index e69de29..0bc13c6 100644
--- a/sources
+++ b/sources
@@ -0,0 +1,2 @@
+d172631b6e6f32c4f93f647a09862011  4.2r1-hrepack-patch.tar
+9082c6fa913b9188452fa6c5217e1573  HDF4.2r1.tar.gz