libraries/netcdf: Enable netcdf-4 support.

Signed-off-by: David Spencer <idlemoor@slackbuilds.org>

libraries/netcdf/README

@@ -5,22 +5,11 @@ netCDF libraries support a machine-independent format for representing
 scientific data. Together, the interfaces, libraries, and format support
 the creation, access, and sharing of scientific data.
 
-NetCDF data is:
+Optional HDF4 support
+---------------------
 
-   * Self-Describing. A netCDF file includes information about the
-   data it contains.  
-   * Portable. A netCDF file can be accessed by computers with different 
-   ways of storing integers, characters, and floating- point numbers.  
-   * Scalable. A small subset of a large dataset may be accessed 
-   efficiently.  
-   * Appendable. Data may be appended to a properly structured netCDF 
-   file without copying the dataset or redefining its structure.  
-   * Sharable. One writer and multiple readers may simultaneously access
-   the same netCDF file.
-   * Archivable. Access to all earlier forms of netCDF data will be
-   supported by current and future versions of the software.
+If you need support for reading HDF4 files, please build and install the 'hdf'
+package from SlackBuilds.org, and then pass the option 'HDF4=yes' to the netcdf
+SlackBuild, for example
 
-The netCDF software was developed by Glenn Davis, Russ Rew, Ed Hartnett,
-John Caron, Steve Emmerson, and Harvey Davies at the Unidata Program
-Center in Boulder, Colorado, with contributions from many other netCDF
-users.
+  HDF4=yes ./netcdf.SlackBuild

libraries/netcdf/netcdf.SlackBuild

@@ -27,7 +27,7 @@
 PRGNAM=netcdf
 SRCNAM=netcdf-c
 VERSION=${VERSION:-4.4.1}
-BUILD=${BUILD:-1}
+BUILD=${BUILD:-2}
 TAG=${TAG:-_SBo}
 
 if [ -z "$ARCH" ]; then
@@ -72,6 +72,12 @@ find -L . \
  \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
   -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;
 
+if [ "${HDF4:-no}" = 'yes' ]; then
+  hdf4opt="--enable-hdf4"
+else
+  hdf4opt=""
+fi
+
 CFLAGS="$SLKCFLAGS" \
 CXXFLAGS="$SLKCFLAGS" \
 ./configure \
@@ -83,7 +89,9 @@ CXXFLAGS="$SLKCFLAGS" \
    --datarootdir=/usr \
    --docdir=/usr/doc/$PRGNAM-$VERSION \
    --enable-static=no \
-   --disable-netcdf-4 \
+   --enable-netcdf-4 \
+   --enable-dap-netcdf \
+   ${hdf4opt} \
    --build=$ARCH-slackware-linux
 
 make

libraries/netcdf/netcdf.info

@@ -5,6 +5,6 @@ DOWNLOAD="https://github.com/Unidata/netcdf-c/archive/v4.4.1/netcdf-c-4.4.1.tar.
 MD5SUM="b4e0308c7753af84034eb0984f2e36a7"
 DOWNLOAD_x86_64=""
 MD5SUM_x86_64=""
-REQUIRES=""
+REQUIRES="hdf5"
 MAINTAINER="David Spencer"
 EMAIL="baildon.research@googlemail.com"