openfoam/applications/test/00-machine-sizes/Test-machine-sizes.cpp
Mark Olesen 9f7cfa9419 ENH: support libz disabling via WM_COMPILE_CONTROL (as ~libz)
- eg, for partially incomplete systems (without libz devel header)

ENH: clearer binding of dummy Pstream in OpenFOAM/Make/options

- link of dummy stub Pstream now contingent on linking libOpenFOAM as
  well. This makes the purpose slightly clearer

ENH: cleaner option naming/handling in wmake script

- allow special purpose -no-openfoam option.
  Eg, compiling test programs without OpenFOAM and Pstream libraries
  but using the rest of the wmake system.

ENH: add +openmp support into WM_COMPILE_CONTROL (#2633)

- this adds compile/link flags for openmp.
  For single-use, can also use 'wmake -openmp'.

  If both +openmp and ~openmp are specified in WM_COMPILE_CONTROL
  the ~openmp will have priority.

  This is actually done indirectly since ~openmp will set empty
  COMP_OPENMP, LINK_OPENMP internal variables, which the +openmp then
  adds to the c++FLAGS and linkexe targets (ie, won't actually add
  anything).

ENH: add +ccache or ccache=... support into WM_COMPILE_CONTROL (#2633)

- with the first version (+ccache), simply use ccache from the path
  without any extra options.

- with the second version (ccache=...), can be more specific about
  what is called.

  Using "+ccache" is identical to "ccache=ccache", but the later could
  be used in other ways. For example,

     ccache=/strange/install/path/ccache
     ccache=</path/my-tooling --option>

  Have the choice of unquoted, single or double quoted or '< >' quoted

STYLE: relocate FOAM_EXTRA_LDFLAGS in general makefile

- removes clutter for different linkers (eg, gold, mold, ldd)
  making it easier to extend for other linkers.

STYLE: protect makefile checks with 'strip' function
2022-11-15 14:00:18 +01:00

83 lines
2.4 KiB
C++

/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | www.openfoam.com
\\/ M anipulation |
-------------------------------------------------------------------------------
Copyright (C) 2018-2022 OpenCFD Ltd.
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
OpenFOAM 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.
OpenFOAM 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 OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
Description
Test the sizeof for basic types.
Can be compiled and run without any OpenFOAM libraries.
g++ -std=c++11 -oTest-machine-sizes Test-machine-sizes.cpp
\*---------------------------------------------------------------------------*/
#include <climits>
#include <cstdint>
#include <cstdlib>
#include <iostream>
#include <limits>
#include <typeinfo>
template<class T>
void print(const char* name, bool showLimits = true)
{
std::cout
<< "name=\"" << name << "\" sizeof=" << sizeof(T);
if (showLimits)
{
std::cout
<< " \"max\"=" << std::numeric_limits<T>::max();
}
std::cout<< '\n';
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
// Main program:
int main(int argc, char *argv[])
{
std::cout<< "c++ = " << __cplusplus << '\n';
std::cout<< "machine sizes\n---\n\n";
print<short>("short");
print<int>("int");
print<long>("long");
print<unsigned long>("unsigned long");
print<std::size_t>("std::size_t");
print<long long>("long long");
print<float>("float");
print<double>("double");
print<long double>("long double");
std::cout << "\n---\nEnd\n\n";
return 0;
}
// ************************************************************************* //