davids5 opened a new pull request #1270:
URL: https://github.com/apache/incubator-nuttx/pull/1270
## Summary
An out-of-tree build may have a .git file that is from a submodule. Once we
find a .git, we need check if this is really a working dir.
## Impact
The tools/version was being passes values that imply the directory is a
working dir when it is not.
It this uses git operations that will fail.
## Testing
built in nuttx master and out of tree in a submodule. Both now work.
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