Merge branch 'release-v4.4'

This merge finalizes the v4.4 release by adding changes from the 'release-v4.4'
branch onto the 'master' branch.

* release-v4.4: (22 commits)
  Update version number to 4.4
  adding capability to turn off subgrid processing using subgrid_ratio_x=0 or subgrid_ratio_y=0
  Updating/adding METGRID.TBL entries for Thompson AA microphysics scheme
  Fixing domain dx and dy in calc_dfdx and calc_dfdy
  Fixing bug in calc_dfdx and calc_dfdy
  drainage_map
  tile-drainage-map
  Remove METGRID.TBL.NMM and METGRID.TBL.NMM.rap files
  adding subgrid shifting fix into metgrid
  No more NMM support available in WRF model
  Added bathymetry section to GEOGRID.TBL.ARW
  If internal GRIB2 libs will be compiled, don't show user NO_GRIB2 config options
  Add 'grib2' to the top-level .gitignore file
  Fix dependencies in ungrib/src/Makefile to allow just g2print to be compiled
  Update ungrib Makefile to support internally-compiled GRIB2 libs
  Modify Config.pl to set INTERNAL_GRIB2_PATH in preamble based on grib2dir argument
  Modify configure script to recognize --build-grib2-libs option
  Add .gitignore in external/ to ignore files created when building GRIB2 libs
  Add Makefile in the external directory
  Fix compilation errors in JasPer library with GNU 9.2.0 compilers on macOS
  ...

.gitignore

@@ -3,3 +3,6 @@ ungrib.exe
 metgrid.exe
 configure.wps
 configure.wps.backup
+
+# Compiled GRIB2 libraries if --build-grib2-libs option is given to configure script
+grib2

README

@@ -1,13 +1,12 @@
-WRF Pre-Processing System Version 4.3.1
+WRF Pre-Processing System Version 4.4
 
 http://www2.mmm.ucar.edu/wrf/users/
 
 The WRF Pre-Processing System (WPS) is a collection
 of Fortran and C programs that provides data used as
-input to the real.exe and real_nmm.exe programs. There 
-are three main programs and a number of auxiliary 
-programs that are part of WPS.  Both the ARW and NMM 
-dynamical cores in WRF are supported by WPS.
+input to the real.exe program. There are three main 
+programs and a number of auxiliary programs that 
+are part of WPS.
 
 For questions and help to run the program, please see the 
 User's Guide at http://www2.mmm.ucar.edu/wrf/users/docs/user_guide_v4/contents.html

arch/Config.pl

@@ -11,6 +11,7 @@
 $sw_netcdf_path = "";
 $sw_netcdff_lib = "";
 $sw_phdf5_path  = ""; 
+$sw_grib2_path = "";
 $sw_jasperlib_path = ""; 
 $sw_jasperinc_path = ""; 
 $sw_ldflags      = ""; 
@@ -61,47 +62,59 @@
         # separated by ! instead. Replace with spaces here.
         $sw_ldflags =~ s/!/ /g ;
     }    
+    if(substr( $ARGV[0], 1, 9 ) eq "grib2dir=")
+    {
+        $sw_grib2_path = substr( $ARGV[0], 10 );
+    }
     shift @ARGV;
 } # end while
 
-# The jasper library is required to build Grib2 I/O.  User must set 
-# environment variables JASPERLIB and JASPERINC to paths to library and 
-# include files to enable this feature prior to running configure.  
-if($ENV{JASPERLIB} && $ENV{JASPERINC})
+if ($sw_grib2_path eq "")
 {
-   printf "Found Jasper environment variables for GRIB2 support...\n";
-   printf("  \$JASPERLIB = %s\n",$ENV{JASPERLIB});
-   printf("  \$JASPERINC = %s\n",$ENV{JASPERINC});
-   $sw_jasperlib_path = "-L$ENV{JASPERLIB} -ljasper -lpng -lz"; 
-   $sw_jasperinc_path = "-I$ENV{JASPERINC}"; 
+   # The jasper library is required to build Grib2 I/O.  User must set 
+   # environment variables JASPERLIB and JASPERINC to paths to library and 
+   # include files to enable this feature prior to running configure.  
+   if($ENV{JASPERLIB} && $ENV{JASPERINC})
+   {
+      printf "Found Jasper environment variables for GRIB2 support...\n";
+      printf("  \$JASPERLIB = %s\n",$ENV{JASPERLIB});
+      printf("  \$JASPERINC = %s\n",$ENV{JASPERINC});
+      $sw_jasperlib_path = "-L$ENV{JASPERLIB} -ljasper -lpng -lz"; 
+      $sw_jasperinc_path = "-I$ENV{JASPERINC}"; 
+   }
+   else
+   {
+
+       $tmp1 = '/usr/local/jasper';
+       if (-e $tmp1) {
+         $sw_jasperlib_path = '-L/usr/local/jasper/lib -ljasper -L/usr/local/libpng -lpng12 -lpng -L/usr/local/zlib/lib -lz' ;
+         $sw_jasperinc_path = '-I/usr/local/zlib/include -I/usr/local/jasper/include -I/usr/local/libpng/' ; 
+           printf "\$JASPERLIB or \$JASPERINC not found in environment. Using /usr/local for library paths...\n";
+       }
+       else {
+         $tmp1 = '/opt/local/lib';
+         if (-e $tmp1) {
+           $sw_jasperlib_path = '-L/opt/local/lib -ljasper -lpng -lz';
+           $sw_jasperinc_path = '-I/opt/local/include'; 
+           printf "\$JASPERLIB or \$JASPERINC not found in environment. Using /opt/local for library paths...\n";
+         }
+         else {
+           $sw_jasperlib_path = '-L/glade/u/home/wrfhelp/UNGRIB_LIBRARIES/lib -ljasper -lpng -lz';
+           $sw_jasperinc_path = '-I/glade/u/home/wrfhelp/UNGRIB_LIBRARIES/include';
+           printf "\$JASPERLIB or \$JASPERINC not found in environment. Using default values for library paths...\n";
+         }
+       }
+   }
+   @platforms = ('serial', 'serial_NO_GRIB2', 'dmpar', 'dmpar_NO_GRIB2');
 }
 else
 {
-
-    $tmp1 = '/usr/local/jasper';
-    if (-e $tmp1) {
-      $sw_jasperlib_path = '-L/usr/local/jasper/lib -ljasper -L/usr/local/libpng -lpng12 -lpng -L/usr/local/zlib/lib -lz' ;
-      $sw_jasperinc_path = '-I/usr/local/zlib/include -I/usr/local/jasper/include -I/usr/local/libpng/' ; 
-        printf "\$JASPERLIB or \$JASPERINC not found in environment. Using /usr/local for library paths...\n";
-    }
-    else {
-      $tmp1 = '/opt/local/lib';
-      if (-e $tmp1) {
-        $sw_jasperlib_path = '-L/opt/local/lib -ljasper -lpng -lz';
-	$sw_jasperinc_path = '-I/opt/local/include'; 
-        printf "\$JASPERLIB or \$JASPERINC not found in environment. Using /opt/local for library paths...\n";
-      }
-      else {
-      $sw_jasperlib_path = '-L/glade/u/home/wrfhelp/UNGRIB_LIBRARIES/lib -ljasper -lpng -lz';
-      $sw_jasperinc_path = '-I/glade/u/home/wrfhelp/UNGRIB_LIBRARIES/include';
-        printf "\$JASPERLIB or \$JASPERINC not found in environment. Using default values for library paths...\n";
-      }
-    }
+   $sw_jasperlib_path = '-L$(INTERNAL_GRIB2_PATH)/lib -ljasper -lpng -lz';
+   $sw_jasperinc_path = '-I$(INTERNAL_GRIB2_PATH)/include';
+   @platforms = ('serial', 'dmpar');
 }
 
 $validresponse = 0 ;
-# added this from the WRF Config.pl by John M.
-@platforms = ('serial', 'serial_NO_GRIB2', 'dmpar', 'dmpar_NO_GRIB2');
 # Display the choices to the user and get selection
 until ($validresponse)
 {
@@ -208,7 +221,7 @@
             {                                      
                 if($paropt eq 'serial')
                 {                    
-                    if($ENV{JASPERLIB} && $ENV{JASPERINC})
+                    if(($ENV{JASPERLIB} && $ENV{JASPERINC}) || $sw_grib2_path ne "")
                     {
                        $sw_compL = $sw_jasperlib_path;
                        $sw_compI = $sw_jasperinc_path;
@@ -236,7 +249,7 @@
                 }
                 if($paropt eq 'dmpar') 
                 {                         
-                    if($ENV{JASPERLIB} && $ENV{JASPERINC})
+                    if(($ENV{JASPERLIB} && $ENV{JASPERINC}) || $sw_grib2_path ne "")
                     {
                        $sw_compL = $sw_jasperlib_path;
                        $sw_compI = $sw_jasperinc_path;
@@ -302,6 +315,7 @@
 
         $_ =~ s:CONFIGURE_NETCDFF_LIB:$sw_netcdff_lib:g; 
         $_ =~ s:CONFIGURE_WRF_PATH:$sw_wrf_path:g; 
+        $_ =~ s:CONFIGURE_GRIB2_PATH:$sw_grib2_path:g;
         @preamble = ( @preamble, $_ ) ;
     }
     close ARCH_PREAMBLE;

arch/preamble

@@ -53,3 +53,5 @@ COMPRESSION_LIBS	=  # intentionally left blank, fill in COMPRESSION_LIBS below
 
 COMPRESSION_INC		=  # intentionally left blank, fill in COMPRESSION_INC below
 
+INTERNAL_GRIB2_PATH     = CONFIGURE_GRIB2_PATH
+

compile

@@ -112,7 +112,7 @@ endif
 # Print out WPS version, system info, and compiler/version
 echo "============================================================================================== "
   echo " "
-  echo Version 4.3.1
+  echo Version 4.4
   echo " "
   uname -a
   echo " "

configure

@@ -2,13 +2,21 @@
 
 #
 # Check for command-line arguments
-# At present, the only supported argument is --nowrf, which disables checks to
-# find the path to the compiled WRF model.
+# At present, the only supported arguments are:
+#     --nowrf : disables checks to find the path to the compiled WRF model
+#     --build-grib2-libs : compiles zlib, libpng, and JasPer libraries from
+#                          source in the external/ directory and installs
+#                          the libraries in grib2/
 #
 nowrf=0
+build_grib2=0
 for arg in $@; do
   if [ "${arg}" = "--nowrf" ]; then
     nowrf=1
+  elif [ "${arg}" = "--build-grib2-libs" ]; then
+    build_grib2=1
+  else
+    printf "Unrecognized option %s\n" ${arg}
   fi
 done
 
@@ -216,8 +224,22 @@ the WRF I/O libraries:
 EOF
 fi
 
+grib2dir=""
+if [ ${build_grib2} -eq 1 ]; then
+   grib2dir="${PWD}/grib2"
+
+   cat << EOF
+********************************************************************************
+The zlib, libpng, and JasPer libraries will be compiled from source and
+installed in ${grib2dir} .
+
+The environment variables JASPERLIB and JASPERINC will be ignored.
+********************************************************************************
+EOF
+fi
+
 # Found perl, so proceed with configuration
-perl arch/Config.pl -perl=$PERL -netcdf=$NETCDF -netcdff=$NETCDFF -os=$os -mach=$mach -wrfdir=$wrf_dir
+perl arch/Config.pl -perl=$PERL -netcdf=$NETCDF -netcdff=$NETCDFF -os=$os -mach=$mach -wrfdir=$wrf_dir -grib2dir=$grib2dir
 
 
 #Checking cross-compiling capability for some particular environment