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## Dependencies
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RocksDB is developed on Linux (CentOS release 5.2), with gcc 4.8.1.
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It depends on gcc with C++11 support.
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* RocksDB depends on the following libraries:
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- [zlib](http://www.zlib.net/) - a library for data compression.
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- [bzip2](http://www.bzip.org/) - a library for data compression.
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- [snappy](https://code.google.com/p/snappy/) - a library for fast
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data compression.
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- [gflags](https://code.google.com/p/gflags/) - a library that handles
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command line flags processing.
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RocksDB will successfully compile without the compression libraries included,
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but some things may fail. We do not support releases without the compression
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libraries. You are on your own.
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## Supported platforms
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* **Linux**
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* Upgrade your gcc to version at least 4.7 to get C++11 support.
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* Install gflags. First, try: `sudo apt-get install libgflags-dev`.
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If this doesn't work and you're using Ubuntu, here's a nice tutorial:
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(http://askubuntu.com/questions/312173/installing-gflags-12-04)
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* Install snappy. This is usually as easy as:
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`sudo apt-get install libsnappy-dev`.
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* Install zlib. Try: `sudo apt-get install zlib1g-dev`.
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* Install bzip2: `sudo apt-get install libbz2-dev`.
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* **OS X**:
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* Install latest C++ compiler that supports C++ 11:
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* Update XCode: run `xcode-select --install` (or install it from XCode App's settting).
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* Install via [homebrew](http://brew.sh/).
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* If you're first time developer in MacOS, you still need to run: `xcode-select --install` in your command line.
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* run `brew tap homebrew/dupes; brew install gcc47 --use-llvm` to install gcc 4.7 (or higher).
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* Install zlib, bzip2 and snappy libraries for compression.
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* Install gflags. We have included a script
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`build_tools/mac-install-gflags.sh`, which should automatically install it.
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If you installed gflags by other means (for example, `brew install gflags`),
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please set `LIBRARY_PATH` and `CPATH` accordingly.
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* Please note that some of the optimizations/features are disabled in OSX.
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We did not run any production workloads on it.
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## Compilation
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`make clean; make` will compile librocksdb.a (RocskDB static library) and all
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the unit tests. You can run all unit tests with `make check`.
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If you followed the above steps and your compile or unit tests fail,
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please submit an issue: (https://github.com/facebook/rocksdb/issues)
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