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Install Packages on OS X 14.5

We assume that you are using homebrew as a package manager.

Compilers

You need a C++11-compatible compiler to build Lean. As of November 2014, you have three options:

  • clang++-3.5 (shipped with OSX, Apple LLVM version 6.0)
  • gcc-4.9.1 (homebrew)
  • clang++-3.5 (homebrew)

We recommend to use Apple's clang++ because it is pre-shipped with OS X and requires no further installation.

To install gcc-4.9.1 via homebrew, please execute:

brew install gcc

To install clang++-3.5 via homebrew, please execute:

brew install llvm

To use compilers other than the default one (Apple's clang++), you need to use -DCMAKE_CXX_COMPILER option to specify the compiler that you want to use when you run cmake. For example, do the following to use g++.

cmake -DCMAKE_CXX_COMPILER=g++ ...

Required Packages: CMake, GMP, libuv

brew install cmake
brew install gmp
brew install libuv

Recommended Packages: CCache

brew install ccache