Where to get the mbarrier.h file and acc. library to compile AviDemux under Windows 7?

Question

C++ / C#

Where can I get the header file mbarrier.h and the corresponding library to compile AviDemux under Windows 7?

The MemoryBarrier() function is mentioned.

Configuration swears

ERROR: w32threads requested, but not all dependencies are satisfied: atomics_native

We are watching

w32threads_deps="atomics_native"
atomics_native_if_any="$ATOMICS_LIST"
ATOMICS_LIST="
    atomics_gcc
    atomics_suncc
    atomics_win32
"
atomics_win32_if="MemoryBarrier"

What kind of MemoryBarrier is this and what is it eaten with? The search finds libraries only for arm and microcontrollers, and even some business application.

PS The regular compilation instructions are outdated. It uses already from the 6th version and files from 2004.