Re: [bug-gnu-libiconv] Avoid __declspec(dllexport) for MSVC static build

[Bruno Haible]

Dmitry Bely wrote on 2023-08-16:
> The atacheched patch works for me (I realized it could be me made
> slightly differently without touching BUILDING_DLL)

Thanks a lot! You taught me something new: I wasn't aware of the 'DLL_EXPORT'
symbol defined by libtool.

I've now used this trick to minimize the exported symbols of static .obj
files created by MSVC not only in GNU libiconv, but also in GNU gettext.

Bruno