On Sat, 06 Sep 2014 01:53:20 -0700, Daniel James wrote:

On 6 September 2014 03:11, Mostafa wrote:

...

$ git submodule update libs/align fatal: reference is not a tree: d32353ea7d39c0237202e3e460f3248f226db274 Unable to checkout 'd32353ea7d39c0237202e3e460f3248f226db274' in submodule path 'libs/align'

$ git submodule update tools/litre fatal: reference is not a tree: 564d4d8d30b7e03ac5e25d78e14d2c19fa321c83 Unable to checkout '564d4d8d30b7e03ac5e25d78e14d2c19fa321c83' in submodule path 'tools/litre'

'litre' hasn't changed since the git conversion, so if you had a previously good checkout it should still be there, so there's possibly something wrong with your clone. Try going to the submodule's directory and running 'git fetch'.

Also, do you have any remotes pointing at other locations? Git might be fetching from the wrong place. I find it best to keep the 'boostorg' as origin, and any forks as other branches. Also, if the submodule's current branch is tracking another remote, it will fetch from there (which seems wrong to me, it should really fetch from the remote that the super-project refers to).

Thanks for the info. None of the workarounds suggested in this thread or elsewhere worked. I eventually had to make a new clone, and that worked. (Most google search pinned the blame for this type of error on some upstream mismatch, but obviously that was not it in this case.)