Reorganize the /build layout for Windows to better support +target=msvc for CPP runtime

[adrpo]

Currently runtimeCPPmsvcinstall and runtimeCPPinstall puts the build/include and build/lib files in the same place which means that we only support gcc for the CPP runtime (or whichever target is ran last).

I propose to have build/include/msvc/cpp and build/lib/msvc/cpp.
Maybe even have the same for the C runtime (build/include|lib/msvc/c) as currently is directly in build/include/msvc and build/lib/msvc.

[sjoelund.se]

Why would the msvc includes be different from gcc includes?

[adrpo]

Because at least in CPP runtime they have some ModelicaConfig.inc and ModelicaLibraryConfig.inc (makefile) includes that are in build/include/cpp and they are make or nmake specific.

[adrpo]

Also, is possible that depending on configuration some header files might be different for gcc or msvc.

[niklwors]

add the moment we copy all gcc libs to build/lib/cpp and the msvc libs to build/lib/cpp/msvc

[adrpo]

Ok. So the only issues are because of the .inc files and the precompiled headers that are set by them.

[niklwors]

Yes I think so.

[mwalther]

I've build the environment with the following commands on windows 7:

make -f Makefile.omdev.mingw omc -j4
make -f Makefile.omdev.mingw runtimeCPPinstall -j4
make -f Makefile.omdev.mingw runtimeCPPmsvcinstall -j4

after that, I've changed to testsuite/simulation/libraries/msl32_cpp and started the following tests:

omc Modelica.Electrical.Spice3.Examples.CoupledInductors.mos
omc Modelica.Electrical.Spice3.Examples.CoupledInductors.mos +target=msvc

Both tests completed successfully. The libraries of the gcc build are stored in build\lib\omc\cpp and the libraries of the msvc build are copied to build\lib\omc\cpp\msvc. There are 3 files in the include folder that differ for gcc and msvc build. The are separated by their file extension (Modelica.pch and Modelica.h.gch) or their name (ModelicaConfig_msvc.inc and ModelicaConfig_gcc.inc / ModelicaLibraryConfig_msvc.inc and ModelicaLibraryConfig_gcc.inc).

Which further steps are needed to close the ticket?