apple-gcc42: import homebrew/dupes into core.

Formula/apple-gcc42.rb

@@ -0,0 +1,84 @@
+class AppleGcc42 < Formula
+  desc "GNU compiler collection"
+  homepage "https://r.research.att.com/tools/"
+  url "https://r.research.att.com/tools/gcc-42-5666.3-darwin11.pkg"
+  mirror "https://web.archive.org/web/20130512150329/https://r.research.att.com/tools/gcc-42-5666.3-darwin11.pkg"
+  version "4.2.1-5666.3"
+  sha256 "2f3893b411f578bfa98a99646ecfea0ba14e1bff4e4f311d7e595936d0da065d"
+
+  bottle do
+    cellar :any_skip_relocation
+    sha256 "07ff3dce62965fa6ba3ac63d5f3030d583ce070a1775cc11166ca9d32587ced5" => :el_capitan
+    sha256 "bbd10e902c52e794035bf9773180a740300a826790da03a141d01e6cd6c5b87d" => :yosemite
+    sha256 "4ccdc9fbf3900333bac114607eca9a8a5ea70ea9248d395798dd0d75dbf69c27" => :mavericks
+  end
+
+  option "with-gfortran-symlink", "Provide gfortran symlinks"
+
+  depends_on MaximumMacOSRequirement => :mavericks
+
+  def install
+    system "/bin/pax", "--insecure", "-rz", "-f", "usr.pkg/Payload", "-s", ",./usr,#{prefix},"
+
+    if build.with? "gfortran-symlink"
+      bin.install_symlink "gfortran-4.2" => "gfortran"
+      man1.install_symlink "gfortran-4.2.1" => "gfortran.1"
+    end
+  end
+
+  def caveats
+    <<-EOS.undent
+      NOTE:
+      This formula provides components that were removed from XCode in the 4.2
+      release. There is no reason to install this formula if you are using a
+      version of XCode prior to 4.2.
+
+      This formula contains compilers built from Apple's GCC sources, build
+      5666.3, available from:
+
+        https://opensource.apple.com/tarballs/gcc
+
+      All compilers have a `-4.2` suffix. A GFortran compiler is also included.
+    EOS
+  end
+
+  test do
+    (testpath/"hello-c.c").write <<-EOS.undent
+      #include <stdio.h>
+      int main()
+      {
+        puts("Hello, world!");
+        return 0;
+      }
+    EOS
+    system "#{bin}/gcc-4.2", "-o", "hello-c", "hello-c.c"
+    assert_equal "Hello, world!\n", `./hello-c`
+
+    (testpath/"hello-cc.cc").write <<-EOS.undent
+      #include <iostream>
+      int main()
+      {
+        std::cout << "Hello, world!" << std::endl;
+        return 0;
+      }
+    EOS
+    system "#{bin}/g++-4.2", "-o", "hello-cc", "hello-cc.cc"
+    assert_equal "Hello, world!\n", `./hello-cc`
+
+    fixture = <<-EOS.undent
+      integer,parameter::m=10000
+      real::a(m), b(m)
+      real::fact=0.5
+
+      do concurrent (i=1:m)
+        a(i) = a(i) + fact*b(i)
+      end do
+      print *, "done"
+      end
+    EOS
+    (testpath/"in.f90").write(fixture)
+    system "#{bin}/gfortran", "-c", "in.f90"
+    system "#{bin}/gfortran", "-o", "test", "in.o"
+    assert_equal "done", `./test`.strip
+  end
+end