Merge pull request #256 from jshaw35/rttov_int

Optionally add hdf5 libraries for linking with COSP-RTTOV

Author: jedwards4b

machines/derecho/derecho.cmake

@@ -20,3 +20,6 @@ if (MPILIB STREQUAL openmpi)
   set(SCXX "$ENV{CXX}")
   set(SFC "$ENV{FC}")
 endif()
+if(DEFINED ENV{RTTOV})
+  string(APPEND LDFLAGS " -L$(NCAR_LDFLAGS_HDF5) -lhdf5_fortran -lhdf5_hl_fortran -lhdf5")
+endif()