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Edited 'Compiling on a Mac' section of the README.md #12

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22 changes: 12 additions & 10 deletions README.md
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Expand Up @@ -69,19 +69,21 @@ or installation is required).

For an introduction on writing your own applications, read [Creating-GraphChi-Applications](https://github.com/GraphChi/graphchi-cpp/wiki/Creating-GraphChi-Applications).

### Problems compiling on Mac
### Compiling on Mac

If compiler complains about missing "omp.h" (OpenMP library), here is a way you can install it:
1. Change directory to graphchi: `cd graphchi-cpp`
- Install graphchi: `bash install.sh`

(Contributed by Jose Pablo Gonzalez):
1) Install homebrew ( http://brew.sh )
2) brew tap homebrew/versions
3) Install a compiler:
brew install apple-gcc42
4) Modify the Makefile to use the new compiler:
CPP = g++-4.2
5) make
_If compiler complains about missing the "omp.h" (OpenMP library)*:_
- [Install homebrew](http://brew.sh)
- `brew tap homebrew/versions`
- Install a compiler:
`brew install apple-gcc42`
- Modify the Makefile to use the new compiler:
`CPP = g++-4.2`
- `make`

*Contributed by Jose Pablo Gonzalez

## How GraphChi works

Expand Down