Add support for DllExport on Windows

[steveklabnik]

Issue by kvanberendonck
Monday Jun 17, 2013 at 06:52 GMT

For earlier discussion, see rust-lang/rust#7196

This issue was labelled with: A-codegen, A-windows, E-easy, P-low in the Rust repository

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It currently does not seem to be possible to export a function from a DLL on Windows. It's not done as one would expect when building with --lib.

[alexcrichton]

Note that for MSVC targets the compiler now places dllexport on all exported functions from a library. It does not, however deal with dllimport at all, and in general the situation is unfortunately a bit of a mess.

I've written up a comment about this, but I'm going to use this bug to track a more proper implementation of using dllimport and dllexport, many of the concerns of which are outlined in that bug.

[alexcrichton]

er actually, I'm going to move this back to rust-lang/rust.