Macports Octave build hangs on El Capitan

While trying to install Octave from Macports on El Capitan, the build hangs during atlas compilation. Existing bug reports don't really provide a solution.

Luckily, Octave wiki provides a solution in 4.3.1 Simple Installation Instructions

  sudo port install atlas +gcc5
  sudo port install arpack -acclerate +atlas
  sudo port install octave


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