By convention, the environment variable MINGWROOT tells the path to MinGW64 (just above bin/, lib/, include/)

• MSYS2: MINGWROOT=%SYSTEMDRIVE%\msys64\mingw64

This variable may be needed to modify the GNU Octave PATH on Windows when using “system()” calls with executables compiled by MinGW. A similar issues exists on Windows with Matlab and Parallel Computing Toolbox, that provides its own mpiexec.

We made a function to workaround these issues.