How to build current OpenOCD version on Windows

1. Download and install MSYS2, strictly follow all step-by-step package install instructions from https://www.msys2.org
2. Run MSYS2 MSYS app and:
   • install LIBUSB package: pacman -S mingw-w64-x86_64-libusb
   • install Git package: pacman -S git
3. Run MSYS2 MinGW 64-bit app and execute:
   • git ls-remote --tags git://git.code.sf.net/p/openocd/code
     to find the latest (pre)released OpenOCD version
   • git clone --depth 1 --branch v0.11.0 git://git.code.sf.net/p/openocd/code
     replace v0.11.0 with the version you would like to build,
     omit the --branch <tag> part to get daily build version
   • cd code
   • ./bootstrap
   • contrib/cross-build.sh
4. Build output can be found in the code/-root/usr directory.
5. Download libusb from https://libusb.info, from the archive file copy VS2015-x64\dll\libusb-1.0.dll to the folder containing just built openocd.exe