add float variant for flow blackoil

CMakeLists.txt

@@ -22,6 +22,7 @@ option(SIBLING_SEARCH "Search for other modules in sibling directories?" ON)
 set( USE_OPENMP_DEFAULT OFF ) # Use of OpenMP is considered experimental
 option(BUILD_FLOW "Build the production oriented flow simulator?" ON)
 option(BUILD_FLOW_VARIANTS "Build the variants for flow by default?" OFF)
+option(BUILD_FLOW_FLOAT_VARIANTS "Build the variants for flow using float?" OFF)
 option(BUILD_FLOW_POLY_GRID "Build flow blackoil with polyhedral grid" OFF)
 option(OPM_ENABLE_PYTHON "Enable python bindings?" OFF)
 option(OPM_ENABLE_PYTHON_TESTS "Enable tests for the python bindings?" ON)
@@ -267,6 +268,10 @@ macro (config_hook)
   include_directories(${EXTRA_INCLUDES})
 
   include(UseDamaris)
+
+  if(BUILD_FLOW_FLOAT_VARIANTS)
+    set(FLOW_INSTANCE_FLOAT 1)
+  endif()
 endmacro (config_hook)
 
 macro (prereqs_hook)
@@ -700,6 +705,18 @@ if (BUILD_FLOW)
     PASS_REGULAR_EXPRESSION "${${project}_LABEL}")
 endif()
 
+if(BUILD_FLOW_FLOAT_VARIANTS)
+  opm_add_test(flow_blackoil_float
+    ONLY_COMPILE
+    ALWAYS_ENABLE
+    DEFAULT_ENABLE_IF OFF
+    DEPENDS opmsimulators
+    LIBRARIES opmsimulators
+    SOURCES
+    flow/flow_blackoil_float_main.cpp
+    $<TARGET_OBJECTS:moduleVersion>)
+endif()
+
 if (OPM_ENABLE_PYTHON)
   add_subdirectory(python)
 endif()

flow/flow_blackoil_float_main.cpp

@@ -0,0 +1,38 @@
+/*
+  Copyright 2020, NORCE AS
+
+  This file is part of the Open Porous Media project (OPM).
+
+  OPM is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  OPM is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with OPM.  If not, see <http://www.gnu.org/licenses/>.
+*/
+#include <config.h>
+
+#include <opm/simulators/flow/Main.hpp>
+#include <flow/flow_blackoil.hpp>
+
+namespace Opm::Properties {
+
+template<class TypeTag>
+struct Scalar<TypeTag, TTag::FlowProblemTPFA> {
+    using type = float;
+};
+
+}
+
+int main(int argc, char** argv)
+{
+    using TypeTag = Opm::Properties::TTag::FlowProblemTPFA;
+    auto mainObject = Opm::Main(argc, argv);
+    return mainObject.runStatic<TypeTag>();
+}

opm-simulators-prereqs.cmake

@@ -23,6 +23,7 @@ set (opm-simulators_CONFIG_VAR
   HAVE_DAMARIS
   HAVE_HDF5
   USE_TRACY
+  FLOW_INSTANCE_FLOAT
   )
 
 # dependencies