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Update build_trouble_shooting.md (#2430)

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I had to fight with my linux box for a day to find the solution to the problem. I hope than this may help other users to save some time.
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Alfredo Cambera 2017-06-21 00:36:10 -04:00 committed by Tianqi Chen
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python-package/build_trouble_shooting.md
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@ -41,6 +41,15 @@ Linux platform (also Mac OS X in general)
**Trouble 4**: I tried `python setup.py install` but it says `setuptools` import fail. **Trouble 4**: I tried `python setup.py install` but it says `setuptools` import fail.
**Solution 4**: Please make sure you have [setuptools](https://pypi.python.org/pypi/setuptools) before installing the python package. **Solution 4**: Please make sure you have [setuptools](https://pypi.python.org/pypi/setuptools) before installing the python package.
**Trouble 5**: I see the same error message in **Trouble 0** when install from `pip install xgboost`.
**Solution 5**: The compilation process uses too many processes to run `make` and the box runs out or RAM. To solve this, there are two alternatives:
* Add more RAM.
* Run `make` with just one process:
```
git clone --recursive https://github.com/dmlc/xgboost
cd xgboost; make -j1
```
Mac OS X (specific) Mac OS X (specific)
------------ ------------
Most of the troubles and solutions are the same with that in the Linux platform. Mac has the following specific problems. Most of the troubles and solutions are the same with that in the Linux platform. Mac has the following specific problems.