ipopt.rb

require 'formula'

class Ipopt < Formula
  homepage 'https://projects.coin-or.org/Ipopt'
  url 'http://www.coin-or.org/download/source/Ipopt/Ipopt-3.11.4.tgz'
  sha1 '909a7073e3e83989d1a8c5aceba2d1a96dc262d2'

  depends_on 'mumps' => :build
  depends_on 'openblas' => :optional
  depends_on 'asl' => :optional
  depends_on 'metis4' => :optional
  depends_on 'pkg-config' => :build

  depends_on :fortran

  def install
    ENV.fortran
    mumps_libs = ['-ldmumps', '-lmumps_common', '-lpord']

    # See whether the parallel or sequential MUMPS library was built.
    opts = Tab.for_formula(Formula.factory('mumps'))
    if opts.used_options.include? 'without-mpi'
      mumps_libs << '-lmpiseq'
      mumps_incdir = Formula.factory('mumps').libexec/'include'
    else
      # The MPI libs were installed as a MUMPS dependency.
      mumps_libs += ['-lmpi_cxx', '-lmpi_f77']
      mumps_incdir = Formula.factory('mumps').include
    end
    mumps_libcmd = "-L#{Formula.factory('mumps').lib} " + mumps_libs.join(' ')

    args = ["--disable-debug",
            "--disable-dependency-tracking",
            "--prefix=#{prefix}",
            "--with-mumps-incdir=#{mumps_incdir}",
            "--with-mumps-lib=#{mumps_libcmd}",
            "--enable-shared",
            "--enable-static"]

    if build.with? 'openblas'
      args << "--with-blas-incdir=#{Formula.factory('openblas').include}"
      args << "--with-blas-lib=-L#{Formula.factory('openblas').lib} -lopenblas"
      args << "--with-lapack-incdir=#{Formula.factory('openblas').include}"
      args << "--with-lapack-lib=-L#{Formula.factory('openblas').lib} -lopenblas"
    end

    if build.with? 'asl'
      args << "--with-asl-incdir=#{Formula.factory('asl').include}/asl"
      args << "--with-asl-lib=-L#{Formula.factory('asl').lib} -lasl -lfuncadd0"
    end

    if build.with? 'metis4'
      args << "--with-metis-incdir=#{Formula.factory('metis4').include}"
      args << "--with-metis-lib='-L#{Formula.factory('metis4').lib} -lmetis'"
    end

    system "./configure", *args
    system "make"
    ENV.deparallelize # Needs a serialized install
    system "make test"
    system "make install"
  end
end

pkg-config should be optional - if it's available, then Ipopt configure will use it, but if not Ipopt can still build.

I'm having some interesting link failures with Ipopt 3.11.5 in OS X Mavericks when I configure for an entirely-static build (--disable-shared, which makes life easier when it comes to Matlab)

Edit: Found a fix for the latter, libtool was doing some strange translations of the link line, replacing -lstdc++ with the full path to the version of libstdc++.dylib inside the homebrew copy of gfortran. Since the system compilers (which I used to build the C/C++ parts of Ipopt) in Mavericks aren't GCC at all, this breaks all the C++ linking. Specifying CXXLIBS=-lc++ fixed it, might need to tweak that section in COIN-OR BuildUtils appropriately.