AqBanking

But shouldn't include-paths inside a C source code file use the forward slash anyway as dir separator? Apparently the C standard deliberately doesn't say anything about file system paths or a directory separator character; there is some discussion here https://stackoverflow.com/questions/5790161/is-the-backslash-acceptable-in-c-and-c-include-directives

Conclusion there: Better stick with forward-slashes anyway, except for some very old MSVC compilers, which gwen doesn't support anyway.

So the better solution is to change the gwen typemaker code to NOT use GWEN_DIR_SEPARATOR_S for paths that are used in the `#include` preprocessor directives but instead directly use "/" there.

That being said: It of course doesn't hurt to add the special definition of the GWEN_DIR_SEPARATOR_S for the special case of the mingw compiler environment, which will prefer forward slashes in paths not only for includes but also in general.

Fixed with gwenhywfar commit https://www.aquamaniac.de/rdm/projects/gwenhywfar/repository/revisions/e31949e7d11a6a24a4bd93650890e2790f4e5055 and released with 5.7.1.