[llvm-dev] "Export ordinal too large" when linking LLVM.dll with MinGW64

[Cosmin Apreutesei via llvm-dev]

Update: looks like the the problem was that the cmake script in
tools/llvm-shlib was set to export all symbols instead of just the C
symbols, and those are way too many (max is 65535).

Changing tools\llvm-shlib\simple_version_script.map.in to read "LLVM_8
{ global: LLVM*; local: *; };" fixed it for me and now I have a dll.