the right way to install crew ROOT in Mac

ROOT for Mac is installed successfully by referring to https://thismodernphysics.wordpress.com/2014/01/16/installing-root-on-mac-10-9/

The detailed steps are:

Installing ROOT(latest version is5.34.14) on Mac 10.9 using cmake.

Firstly install required for ROOT to install.

$ brew install gfortran # Fortran compiler

$ brew install python  # Python interpreter

$ brew install pcre    # Regular Expressions library

$ brew install fftw    # Fast Fourier Transforms

$ brew install cmake    # Cross-platform make

That’s everything required for ROOT to install, now to download and compile.

Installing ROOT

There are two ways we can proceed,

Download the ROOT code and compile it ourselves.

Let homebrew do the heavy lifting.

Each way has (dis)advantages. The following section walks though the first option, and then introduce by the homebrew.

From source code

Just start from configure, when you finish untar source code on

Desktop/root, then

$ export INSTALL_DIR=/usr/local/root

$ mkdir $INSTALL_DIR

$ cd $INSTALL_DIR

Next, configure ROOT withcmake.

$ cmake ~/Desktop/root -DCMAKE_INSTALL_PREFIX=$INSTALL_DIR -Droofit=ON -Dcocoa=ON

In here, we’ve enabled RooFit and the Cocoa bindings for native OS X interaces(No XQuartz!!)

Finally compile,

$ make -j 4

$ make install

And then check everything works,

$ root -l

root [0] TBrowser l;

Homebrew

To install with Homebrew we need to add the science formula repository.

$ brew tap homebrew/science

# then, simply install ROOT, enableing the Cocoa interface,

$ brew install --with-cocoa root

ROOT is now fully compatible with Marverick from version 5.34/13.