/usr/bin/gendef
/usr/bin/genidl
/usr/bin/genpeimg
/usr/bin/i686-w64-mingw32-pkg-config
/usr/bin/i686-w64-mingw32-widl
/usr/bin/x86_64-w64-mingw32-pkg-config
/usr/bin/x86_64-w64-mingw32-widl
You may install this package on Debian with
apt-get
install mingw-w64-tools