use unlocked byte I/O operations

[StefanKarpinski]

That last one didn't really work.

[giordano]

I think on Windows they're called _getc_nolock, _putc_nolock, etc?

[StefanKarpinski]

Ah, ok. That's helpful. This looked like it was succeeding but then failed. Now I have all these bogus releases 😞. Might have to blow the repo away and recreate it without all the detritus.

[StefanKarpinski]

How do I detect if I'm compiling for Windows or not in the BB build environment?

[giordano]

In BB you can check the target environment variable. For example, in bash

if [[  "${target}" == *-mingw* ]]; then
    # ...
fi

In a Makefile outside BB it's a bit more convoluted. I've based JuliaStrings/utf8proc#174 on what Julia does to detect Windows, as suggested by Keno.