Can't find PThreadW32 on mingw

[Kreijstal]

Describe the bug

I am trying to compile clamav but despite having mingw-w64-ucrt-x86_64-winpthreads-git installed I get the error

-- Could NOT find PThreadW32 (missing: PThreadW32_LIBRARIES) 
****** mempool support disabled (mmap() not available or not usable)

How to reproduce the problem

install msys2 and msys2-rust + dependencies
do cmake -B build
see error.

[micahsnyder]

We don't support building under mingw. I have no idea if it will work. You might get it to detect PThreadW32 by using something like

cmake .. \
   -D PThreadW32_INCLUDE_DIR="/path/to/your/include" \
   -D PThreadW32_LIBRARY="/path/to/your/lib/pthreadVC3.lib"