diff --git a/applications/test/00-dummy/Test-dummyLib.C b/applications/test/00-dummy/Test-dummyLib.C
index e89e8f45d7..0e78ca738e 100644
--- a/applications/test/00-dummy/Test-dummyLib.C
+++ b/applications/test/00-dummy/Test-dummyLib.C
@@ -5,7 +5,7 @@
     \\  /    A nd           | www.openfoam.com
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
-    Copyright (C) 2018 OpenCFD Ltd.
+    Copyright (C) 2018-2020 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -32,33 +32,121 @@ Description
 \*---------------------------------------------------------------------------*/
 
 #include "dummyLib.H"
+#include <cstring>
 #include <iostream>
 
+constexpr char nl = '\n';
+constexpr const char* const bold = "\\fB";  // nroff
+constexpr const char* const norm = "\\fR";  // nroff
+
+constexpr const char* const website = "www.openfoam.com";
+
+using std::cout;
+using wmake = Foam::Detail::dummyLib;
+
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
-// Main program:
+
+static void printMan(const char* exeName)
+{
+    cout
+        << ".TH \"" << exeName << "\" 1 "
+        << "\"OpenFOAM-v" << OPENFOAM
+        << "\" \"" << website << "\" \"OpenFOAM Commands Manual\""
+        << nl;
+
+    cout
+        << ".SH NAME" << nl
+        << exeName
+        << " \\- part of " << bold << "OpenFOAM" << norm
+        << " (The Open Source CFD Toolbox)." << nl
+        << ".SH SYNOPSIS" << nl
+        << bold << exeName << norm << " [OPTIONS]" << nl;
+
+    cout
+        << ".SH DESCRIPTION" << nl
+        << ".nf" << nl
+        << "Minimal compilation test with wmake, without OpenFOAM libraries."
+        << nl
+        << ".fi" << nl;
+
+    cout
+        << ".SH OPTIONS" << nl
+        << ".TP" << nl
+        << "-help-man" << nl
+        << "Display manpage" << nl;
+
+    cout
+        << ".SH INFORMATION" << nl
+        << ".nf" << nl
+        << "label    = " << wmake::label_size << nl
+        << "scalar   = " << wmake::scalar_size;
+
+    if
+    (
+        wmake::solveScalar_size
+     && wmake::solveScalar_size != wmake::scalar_size
+    )
+    {
+        cout
+            << " [solve=" << wmake::solveScalar_size << "]";
+    }
+    cout
+        << " (" << wmake::precision << ')' << nl
+        << "arch     = " << wmake::arch << nl
+        << "compiler = " << wmake::compiler << nl;
+
+    cout
+        << nl
+        << "archComp     = " << wmake::archComp << nl
+        << "archCompBase = " << wmake::archCompBase << nl
+        << "archCompFull = " << wmake::archCompFull << nl;
+    cout
+        << ".fi" << nl;
+
+    cout
+        << ".SH \"SEE ALSO\"" << nl
+        << "Online documentation https://" << website << "/documentation/"
+        << nl;
+}
+
 
 int main(int argc, char *argv[])
 {
-    using wmake = Foam::Detail::dummyLib;
+    // Process -help-man
+    if (argc > 1 && strcmp(argv[1], "-help-man") == 0)
+    {
+        printMan("Test-dummyLib");
+        return 0;
+    }
 
-    std::cout
-        << '\n'
-        << "OPENFOAM  = " << OPENFOAM << '\n'
-        << "label     = " << wmake::label_size << '\n'
+    cout
+        << nl
+        << "OPENFOAM  = " << OPENFOAM << nl
+        << "label     = " << wmake::label_size << nl
         << "scalar    = " << wmake::scalar_size
-        << " (" << wmake::precision << ")\n"
-        << "arch      = " << wmake::arch << '\n'
-        << "compiler  = " << wmake::compiler << '\n';
+        << " (" << wmake::precision << ')' << nl;
 
+    if
+    (
+        wmake::solveScalar_size
+     && wmake::solveScalar_size != wmake::scalar_size
+    )
+    {
+        cout
+            << "solve     = " << wmake::solveScalar_size << nl;
+    }
 
-    std::cout
-        << '\n'
-        << "archComp     = " << wmake::archComp << '\n'
-        << "archCompBase = " << wmake::archCompBase << '\n'
-        << "archCompFull = " << wmake::archCompFull << '\n';
+    cout
+        << "arch      = " << wmake::arch << nl
+        << "compiler  = " << wmake::compiler << nl;
 
-    std::cout
-        << '\n';
+    cout
+        << nl
+        << "archComp     = " << wmake::archComp << nl
+        << "archCompBase = " << wmake::archCompBase << nl
+        << "archCompFull = " << wmake::archCompFull << nl;
+
+    cout<< nl;
 
     return 0;
 }
diff --git a/applications/test/00-dummy/dummy/dummyLib.C b/applications/test/00-dummy/dummy/dummyLib.C
index bbb1326b77..1130023f40 100644
--- a/applications/test/00-dummy/dummy/dummyLib.C
+++ b/applications/test/00-dummy/dummy/dummyLib.C
@@ -29,12 +29,15 @@ License
 
 // We know that our options file has properly defined types here
 
+#undef SOLVE_SIZE
+
 #if defined WM_SP
 # define PRECISION    "SP"
 # define SCALAR_SIZE  (8*sizeof(float))
 #elif defined(WM_SPDP)
 # define PRECISION    "SPDP"
 # define SCALAR_SIZE  (8*sizeof(float))
+# define SOLVE_SIZE   (8*sizeof(double))
 #elif defined WM_DP
 # define PRECISION    "DP"
 # define SCALAR_SIZE  (8*sizeof(double))
@@ -66,14 +69,17 @@ const std::string Foam::Detail::dummyLib::compiler(WM_COMPILER);
 
 const std::string Foam::Detail::dummyLib::precision(PRECISION);
 
-const std::string Foam::Detail::dummyLib::scalar_size
-(
-    std::to_string(SCALAR_SIZE)
-);
+const int Foam::Detail::dummyLib::label_size(WM_LABEL_SIZE);
 
-const std::string Foam::Detail::dummyLib::label_size
+const int Foam::Detail::dummyLib::scalar_size(SCALAR_SIZE);
+
+const int Foam::Detail::dummyLib::solveScalar_size
 (
-    std::to_string(WM_LABEL_SIZE)
+    #ifdef SOLVE_SIZE
+    SOLVE_SIZE
+    #else
+    SCALAR_SIZE
+    #endif
 );
 
 const std::string Foam::Detail::dummyLib::archComp
diff --git a/applications/test/00-dummy/dummy/dummyLib.H b/applications/test/00-dummy/dummy/dummyLib.H
index 159403977d..7189b250a2 100644
--- a/applications/test/00-dummy/dummy/dummyLib.H
+++ b/applications/test/00-dummy/dummy/dummyLib.H
@@ -5,7 +5,7 @@
     \\  /    A nd           | www.openfoam.com
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
-    Copyright (C) 2018 OpenCFD Ltd.
+    Copyright (C) 2018-2020 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -60,14 +60,17 @@ struct dummyLib
     //- Compile-time value of WM_COMPILER
     static const std::string compiler;
 
-    //- Compile-time equivalent to WM_PRECISION_OPTION
-    static const std::string scalar_size;
+    //- Compile-time of WM_PRECISION_OPTION
+    static const std::string precision;
 
     //- Compile-time of WM_LABEL_SIZE
-    static const std::string label_size;
+    static const int label_size;
 
-    //- Compile-time value of WM_PRECISION_OPTION
-    static const std::string precision;
+    //- Compile-time equivalent to WM_PRECISION_OPTION
+    static const int scalar_size;
+
+    //- Compile-time equivalent to WM_PRECISION_OPTION
+    static const int solveScalar_size;
 
     //- Compile-time value of WM_ARCH + WM_COMPILER
     static const std::string archComp;