MinGW DLLs for Windows releases

[slipher]

The MinGW DLLs needed for the binaries to run are not provided with the Windows release. They could be provided as part of the release like we do with Unvanquished, but there is a complication: binaries are found in 3 different directories. The ones in arm-nacl/bin and x86_64-nacl/bin appear to be duplicates of the ones in the main bin/ directory though. So you'd have to make 3 copies of the DLLs, unless we can just avoid using the duplicate ones.

The least we could do is say what MinGW flavors the toolchain was built with so users know which DLLs they would need to use it.

Note that I have suggested some changes for finding the MinGW DLLs: Unvanquished/release-scripts#44

[slipher]

So for the Windows amd64 one I think the flavor is posix, msvcrt, seh, version 12. It dynamically links with those DLLs, but the Clang executables seem broken. x86_64-nacl-clang.exe prints Invalid argument no matter what the arguments are.

[illwieckz]

Ah yes, the MinGW libs…

Also I suspect my build went wrong, because I expected the tarball to be larger, unless my optimizations really went good…

[illwieckz]

binaries are found in 3 different directories. The ones in arm-nacl/bin and x86_64-nacl/bin appear to be duplicates of the ones in the main bin/ directory though.

Well, that would just add some more duplication to the duplication, so it's fine. As you noticed it's already full of duplications, that's why the windows tarball without symlinks is usually larger (plus the fact MinGW fails to use LTO on Clang).