ClickHouse/doc/build_osx.md

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# How to build ClickHouse
Build should work on Mac OS X 10.12. If you're using earlier version, you can try to build ClickHouse using Gentoo Prefix and clang sl in this instruction.
With appropriate changes, build should work on any other OS X distribution.
## Install Homebrew
```
/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
```
## Install cmake, gcc
```
brew install cmake gcc
```
## Install GCC-compatible version of boost
```
brew install boost --cc=gcc-6
```
## Install required libraries
```
brew install icu4c mysql openssl unixodbc libtool gettext homebrew/dupes/zlib
```
## Install optional libraries
```
brew install readline
```
# Checkout ClickHouse sources
To get the latest stable version:
```
git clone -b stable git@github.com:yandex/ClickHouse.git
# or: git clone -b stable https://github.com/yandex/ClickHouse.git
cd ClickHouse
```
For development, switch to the `master` branch.
For the latest release candidate, switch to the `testing` branch.
## Use GCC 6 for builds
```
export CC=gcc-6
export CXX=g++-6
```
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## Detect number of threads
```
export THREADS=$(sysctl -n hw.ncpu)
```
# Build ClickHouse
```
mkdir build
cd build
cmake ..
make -j $THREADS
cd ..
```
# Caveats
If you intend to run clickhouse-server, make sure to increase system's maxfiles variable. See [MacOS.md](https://github.com/yandex/ClickHouse/blob/master/MacOS.md) for more details.