Consider shipping llvm-rc.exe on windows.

[crlf0710]

I wonder if it's feasible to ship llvm-rc.exe for windows targets. This tool has limited capacity compared with windres.exe from MinGW and rc.exe from MSVC, but i think it can make steps towards solving rust-lang/rfcs#721 or similar issues.

[hellow554]

CC #49584

I think this could by done by adding it to llvm-tools-preview. What do you think about that @japaric? (ping to you, because you were the moving force for llvm-tools).

[cluck]

Looks like this is solved?

C:\opt\LLVM-9.0.0\x86\bin>llvm-rc.exe --version
Exactly one input file should be provided.

[jonas-schievink]

@cluck Aren't you running from the LLVM installation directory? Try checking what the llvm-tools-preview rustup component provides

[cluck]

Oh, I see, this is about intentionally shipping the llvm binary with Rust, for when the LLVM package is not installed.

That's a different approach than for rc.exe and windres.exe, which continue to be external dependencies (Visual Studio or Windows SDK 10, and MSYS2/MingW/Cygwin/...).