class Lapack < Formula
  desc "Linear Algebra PACKage"
  homepage "http://www.netlib.org/lapack/"
  url "http://www.netlib.org/lapack/lapack-3.7.0.tgz"
  sha256 "ed967e4307e986474ab02eb810eed1d1adc73f5e1e3bc78fb009f6fe766db3be"
  revision 1
  head "https://github.com/Reference-LAPACK/lapack.git"

  bottle do
    sha256 "e57cd51d208ddbcca2aa73d9004ca615314f49dbd0aabc32a6c315be0709c967" => :sierra
    sha256 "c3cfebcf1620b0ef5efbb3287a95d662c035075a999940a6ed03d86e5b8232c2" => :el_capitan
    sha256 "b89c6f5b6c0e1d4971a80026d071ac2826af020e19c504df0ce909f297d85385" => :yosemite
  end

  keg_only :provided_by_osx

  depends_on "cmake" => :build
  depends_on :fortran
  depends_on "gcc"

  def install
    mkdir "build" do
      system "cmake", "..",
                      "-DBUILD_SHARED_LIBS:BOOL=ON",
                      "-DLAPACKE:BOOL=ON",
                      *std_cmake_args
      system "make", "install"

      %W[#{lib}/libblas.dylib #{lib}/liblapack.dylib #{lib}/liblapacke.dylib
         #{lib}/libtmglib.dylib].each do |f|
        macho = MachO.open(f)
        macho.change_dylib_id(macho.dylib_id.sub("@rpath", lib.to_s))
        macho.linked_dylibs.each do |dylib|
          if dylib.include?("@rpath")
            macho.change_dylib(dylib, dylib.sub("@rpath", lib.to_s))
          end
        end
        macho.write!
      end
    end
  end

  test do
    (testpath/"lp.cpp").write <<-EOS.undent
      #include "lapacke.h"
      int main() {
        void *p = LAPACKE_malloc(sizeof(char)*100);
        if (p) {
          LAPACKE_free(p);
        }
        return 0;
      }
    EOS
    system ENV.cc, "lp.cpp", "-I#{include}", "-L#{lib}", "-llapacke", "-o", "lp"
    system "./lp"
  end
end