Fix quadmath problems on ppc64el with IEEE long double

Completes fix of Debian bug #1114005

CMakeLists.txt

@@ -371,12 +371,10 @@ macro (sources_hook)
   if(QuadMath_FOUND)
     get_target_property(qm_defs QuadMath::QuadMath INTERFACE_COMPILE_DEFINITIONS)
     list(APPEND qm_defs HAVE_QUAD=1)
-    get_target_property(qm_options QuadMath::QuadMath INTERFACE_COMPILE_OPTIONS)
     set_source_files_properties(opm/models/nonlinear/newtonmethodparams.cpp
                                 opm/models/utils/parametersystem.cpp
                                 opm/models/utils/simulatorutils.cpp
-                                PROPERTIES COMPILE_DEFINITIONS "${qm_defs}"
-                                COMPILE_OPTIONS "${qm_options}")
+                                PROPERTIES COMPILE_DEFINITIONS "${qm_defs}")
   endif()
 endmacro (sources_hook)
 

opm/models/common/energymodule.hh

@@ -289,7 +289,7 @@ public:
         }
 
         // make the weight of the temperature primary variable inversly proportional to its value
-        return std::max(1.0 / 1000,
+        return std::max(static_cast<Scalar>(1.0) / 1000,
                         1.0 / model.solution(/*timeIdx=*/0)[globalDofIdx][temperatureIdx]);
     }
 
@@ -306,7 +306,7 @@ public:
 
         // approximate change of internal energy of 1kg of liquid water for a temperature
         // change of 30K
-        return 1.0 / (4.184e3 * 30.0);
+        return static_cast<Scalar>(1.0) / (4.184e3 * 30.0);
     }
 
     /*!