=> Bootstrap dependency digest>=20010302: found digest-20190127
=> Fetching opencv-2.4.11.zip
=> Total size: 91671436 bytes
=> Checksum SHA1 OK for opencv-2.4.11.zip
=> Checksum RMD160 OK for opencv-2.4.11.zip
=> Checksum SHA512 OK for opencv-2.4.11.zip