Mfront .dll library from GitHub - thelfer/MFrontGallery: This project shows how to create a compilation project for MFront properties, behaviours and models v2.0 (mfront 4.2.0):
$ldd libCalculiXInterface.dll
ntdll.dll => /c/Windows/SYSTEM32/ntdll.dll (0x7ffab1930000)
KERNEL32.DLL => /c/Windows/System32/KERNEL32.DLL (0x7ffab09b0000)
KERNELBASE.dll => /c/Windows/System32/KERNELBASE.dll (0x7ffaaef20000)
msvcrt.dll => /c/Windows/System32/msvcrt.dll (0x7ffab1600000)
libstdc++-6.dll => /usr/local/MF/all/MFront/libstdc++-6.dll (0x7ffa97c00000)
libgcc_s_seh-1.dll => /usr/local/MF/all/MFront/libgcc_s_seh-1.dll (0x7ffaaa590000)
libTFELException.dll => /usr/local/MF/all/MFront/libTFELException.dll (0x7ffaa98c0000)
libwinpthread-1.dll => /usr/local/MF/all/MFront/libwinpthread-1.dll (0x7ffaa9870000)
libwinpthread-1.dll => /usr/local/MF/all/MFront/libwinpthread-1.dll (0x1ec67850000)
CRYPTBASE.DLL => /c/Windows/SYSTEM32/CRYPTBASE.DLL (0x7ffaae400000)
bcryptPrimitives.dll => /c/Windows/System32/bcryptPrimitives.dll (0x7ffaaf4e0000)
It is possible that due to the lack of these: librarieslibgcc_s_seh-1.dll, libwinpthread-1.dll, libstdc++-6.dll, MFront with the Mecway or PrePoMax could not work (bconverged has these libraries in the bin folder).