ENH: add canCompile test to RunFunctions

- allow conditional skipping of tutorials (for example) if wmake or
  the expected compiler is not available

bin/tools/RunFunctions

@@ -6,11 +6,10 @@
 #    \\/     M anipulation  |
 #------------------------------------------------------------------------------
 #     Copyright (C) 2011-2016 OpenFOAM Foundation
-#     Copyright (C) 2015-2018 OpenCFD Ltd.
+#     Copyright (C) 2015-2020 OpenCFD Ltd.
 #------------------------------------------------------------------------------
 # License
-#     This file is part of OpenFOAM, licensed under GNU General Public License
-#     <http://www.gnu.org/licenses/>.
+#     This file is part of OpenFOAM, distributed under GPL-3.0-or-later.
 #
 # Script
 #     RunFunctions
@@ -54,6 +53,33 @@ notTest()
     return 0
 }
 
+#
+# Test for wmake and compiler suite or emit warning
+#
+canCompile()
+{
+    if ! command -v wmake >/dev/null
+    then
+        echo "No wmake command found ... cannot compile" 1>&2
+        return 1
+    fi
+
+    local cxx_compiler
+    cxx_compiler="$(wmake -show-cxx 2>/dev/null)"
+
+    if [ -z "$cxx_compiler" ]
+    then
+        echo "No wmake rule for C++ compiler? ... cannot compile" 1>&2
+        return 1
+    elif ! command -v "$cxx_compiler"  >/dev/null
+    then
+        echo "No path to C++ compiler ($cxx_compiler) ... cannot compile" 1>&2
+        return 1
+    fi
+
+    return 0
+}
+
 
 #
 # Check if '$1' corresponds to an OpenFOAM value for 'true' (see Switch.H)

tutorials/incompressible/pimpleFoam/laminar/contaminatedDroplet2D/Allrun

@@ -3,6 +3,12 @@ cd "${0%/*}" || exit                                # Run from this directory
 . ${WM_PROJECT_DIR:?}/bin/tools/RunFunctions        # Tutorial run functions
 #------------------------------------------------------------------------------
 
+if ! canCompile
+then
+    echo "skipping tutorial $PWD"
+    exit 0
+fi
+
 m4 < ./system/blockMeshDict.m4 > ./system/blockMeshDict
 
 runApplication blockMesh

tutorials/incompressible/pimpleFoam/laminar/planarPoiseuille/Allrun

@@ -15,6 +15,12 @@ then
     endTime=25
 fi
 
+if ! canCompile
+then
+    echo "skipping tutorial $PWD"
+    exit 0
+fi
+
 #------------------------------------------------------------------------------
 
 # Compute the case in 'serial' mode, and collect the data

tutorials/incompressible/pimpleFoam/laminar/sloshing2D/Allrun

@@ -3,6 +3,12 @@ cd "${0%/*}" || exit                                # Run from this directory
 . ${WM_PROJECT_DIR:?}/bin/tools/RunFunctions        # Tutorial run functions
 #------------------------------------------------------------------------------
 
+if ! canCompile
+then
+    echo "skipping tutorial $PWD"
+    exit 0
+fi
+
 runApplication blockMesh
 runApplication makeFaMesh
 

tutorials/mesh/refineMesh/refineFieldDirs/Allrun

@@ -3,6 +3,12 @@ cd "${0%/*}" || exit                                # Run from this directory
 . ${WM_PROJECT_DIR:?}/bin/tools/RunFunctions        # Tutorial run functions
 #------------------------------------------------------------------------------
 
+if ! canCompile
+then
+    echo "skipping tutorial $PWD"
+    exit 0
+fi
+
 wmake calcRadiusField
 wclean calcRadiusField