[CMake] VC2015 and Windows 7 compatibility

[J Decker]

you can just install the runtime redistributuable for 2015...

https://www.microsoft.com/en-us/download/details.aspx?id=48234



On Tue, Sep 19, 2017 at 9:57 AM, Elvis Stansvik <
elvis.stansvik at orexplore.com> wrote:

> 2017-09-19 17:50 GMT+02:00 Gonzalo Garramuño <ggarra13 at gmail.com>:
> > I compile on Windows 8.1.  I just found out that my program does not
> work on
> > Windows 7 after I upgraded my toolchain to VC2015. Users of my program on
> > Windows 7 get:
> >
> > Missing DLL ms-api-win-core-libraryloader-l1-2-0.dll
> >
> > After some digging, I found out that it can be because the use of SDK
> Sets
> > on win8.1.  And that perhaps setting the compiler compatibility to WinXP
> > should fix it.  However, I don't know how to do that from cmake.
>
> I also build on Win 8.1/MSVC 2015, targeting Windows 7+, and what I do
> is basically:
>
> if(WIN32)
>     add_definitions(/D_WIN32_WINNT=0x0601) # Target Windows 7+
>
>     set(CMAKE_INSTALL_SYSTEM_RUNTIME_DESTINATION ".")
>     set(CMAKE_INSTALL_UCRT_LIBRARIES ON)
>     include(InstallRequiredSystemLibraries)
> endif()
>
> The /D_WIN32_WINNT=0x0601 is what ensures Windows 7 compatibility and
> CMAKE_INSTALL_UCRT_LIBRARIES is what ensures Universal CRT libraries
> like the one you mentioned gets installed alongside the application.
>
> You'll end up with a truckload of such small DLLs, but AFAIK this is
> what you need to do if you want to do app-local deployment of the
> Universal CRT.
>
> Hope that helps.
>
> Elvis
>
> >
> > Any ideas?
> >
> > If you want to see my CMakeLists.txt, you can get the code with:
> >
> > $ git clone ssh://ggarra13@git.code.sf.net/p/mrviewer/code mrviewer-code
> >
> >
> > --
> > Gonzalo Garramuño
> >
> > --
> >
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