[R-pkg-devel] compiling C sources on windows

[Brad Eck]

Thanks Kevin, that fixed the compilation issue.  On to the next!

Brad

On Mon, Apr 19, 2021 at 5:06 PM Kevin Ushey <kevinushey using gmail.com> wrote:

> I suspect the cause is this:
>
>
> https://github.com/bradleyjeck/epanet2toolkit/blob/aa698568ab85db133f8634928e8cfe661b41ed57/src/epanet2.h#L42-L61
>
> Usually, you only need to explicitly use __declspec if you're
> compiling with MSVC -- it shouldn't be necessary when using a MinGW
> toolchain (as R's toolchain is). You could try adding something like:
>
> #ifdef __MINGW32__
> #define DLLEXPORT
> #endif
>
> If you need to test locally on Windows, there are free virtual
> machines available here:
> https://developer.microsoft.com/en-us/microsoft-edge/tools/vms/
>
> Best,
> Kevin
>
> On Mon, Apr 19, 2021 at 2:14 AM Brad Eck <bradleyjeck using gmail.com> wrote:
> >
> > Dear List -
> >
> > I'm working to get a package of mine that was archived last year back on
> to
> > CRAN.
> > The epanet2toolkit provides an R interface to the EPANET simulation
> engine
> > that is written in C.
> >
> > The latest development version of the package builds and checks ok on mac
> > and linux but fails to
> > compile and install on windows with a bunch of errors like:
> >
> > undefined reference to `_imp__*`
> >
> > where * is some function defined in a header file and implemented in the
> > corresponding source file.
> >
> > Am i missing a compiler flag or something?
> >
> > Current output from winbuilder :
> > https://win-builder.r-project.org/9aIcl8Fxu7w1/00install.out
> > or https://pastebin.com/8JQNpNKp
> >
> > source code: https://github.com/bradleyjeck/epanet2toolkit/tree/v22dev
> >
> > Any insights appreciated.
> >
> > Brad
> >
> >         [[alternative HTML version deleted]]
> >
> > ______________________________________________
> > R-package-devel using r-project.org mailing list
> > https://stat.ethz.ch/mailman/listinfo/r-package-devel
>

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