- workaround for: find_package(netCDFCxx REQUIRED) fails to find it because netcdf-cxx is built w/out cmake support

--- CMakeLists.txt.orig	2022-03-03 17:36:51 UTC
+++ CMakeLists.txt
@@ -556,10 +556,12 @@ if (BOUT_USE_NETCDF)
     find_package(netCDF REQUIRED)
     FetchContent_MakeAvailable(netcdf-cxx4)
   else()
-    find_package(netCDFCxx REQUIRED)
-    set(CONFIG_LDFLAGS "${CONFIG_LDFLAGS} ${netCDF_CXX_LIBRARY} ${netCDF_LIBRARIES}")
+    find_package(PkgConfig REQUIRED)
+    #find_package(netCDFCxx REQUIRED)
+    pkg_check_modules(NETCDF REQUIRED IMPORTED_TARGET netcdf-cxx4)
+    set(CONFIG_LDFLAGS "${CONFIG_LDFLAGS} ${netCDF_CXX_LIBRARY} ${NETCDF_LDFLAGS}")
   endif()
-  target_link_libraries(bout++ PUBLIC netCDF::netcdf-cxx4)
+  target_link_libraries(bout++ PUBLIC ${NETCDF_LDFLAGS})
   target_compile_definitions(bout++
     PUBLIC "NCDF4"
     PUBLIC "BOUT_HAS_NETCDF")