Incubator-mxnet: fatal: reference is not a tree: 89de7a...

[seongkyun]

i just installed ubuntu 16.04 and try to install MXNet@(commit 62ecb60)

so

git clone --recursive https://github.com/dmlc/mxnet.git
git checkout 62ecb60
git submodule update

then it prints out

fatal: reference is not a tree: 89de7ab20167909bc2c4f8acd397671c47cf3c0d
Unable to checkout '89de7ab20167909bc2c4f8acd397671c47cf3c0d' in submodule path 'cub'

if i ignore that fatal error, then another error occurs during make operation

make -j8

it prints out

/usr/bin/ld: cannot find -lcblas
collect2: error: ld returned 1 exit status
Makefile:242: recipe for target 'lib/libmxnet.so' failed
make: * [lib/libmxnet.so] Error 1
make: Waiting for unfinished jobs....
/usr/bin/ld: cannot find -lcblas
collect2: error: ld returned 1 exit status
Makefile:264: recipe for target 'bin/im2rec' failed
make: ** [bin/im2rec] Error 1

please help me guyz :)

[Soonhwan-Kwon]

git submodule update --remote --merge

after check out may help

[oliverdain]

I think the issue is that, "with branch 1.7.0. We squashed all commits to avoid the huge .git folder." (from https://github.com/dmlc/cub) so the git hash recorded for the submodule no longer exists.

[szha]

This issue is closed due to lack of activity in the last 90 days. Feel free to ping me to reopen if this is still an active issue. Thanks!
Also, do please check out our forum (and Chinese version) for general "how-to" questions.