expect: import homebrew/dupes into core.

Formula/expect.rb

@@ -0,0 +1,59 @@
+class Expect < Formula
+  desc "Program that can automate interactive applications"
+  homepage "https://expect.sourceforge.io/"
+  url "https://downloads.sourceforge.net/project/expect/Expect/5.45/expect5.45.tar.gz"
+  sha256 "b28dca90428a3b30e650525cdc16255d76bb6ccd65d448be53e620d95d5cc040"
+
+  bottle do
+    rebuild 1
+    sha256 "dafd62a44b446d75f43d5d331eb627af53f28539835153101990a248174c48dc" => :el_capitan
+    sha256 "160fc63e9cd6de38ef22c8363fa9f317069827df656e0ac012c9a93f9c921feb" => :yosemite
+    sha256 "024522f2635d4f6bc2e9d3899932e4313c626bc11caf2ffba3141c48caf006ac" => :mavericks
+  end
+
+  option "with-threads", "Build with multithreading support"
+  option "with-brewed-tk", "Use Homebrew's Tk (has optional Cocoa and threads support)"
+
+  deprecated_option "enable-threads" => "with-threads"
+
+  depends_on "tcl-tk" if build.with? "brewed-tk"
+
+  # Autotools are introduced here to regenerate configure script. Remove
+  # if the patch has been applied in newer releases.
+  depends_on "autoconf" => :build
+  depends_on "automake" => :build
+  depends_on "libtool" => :build
+
+  # Fix Tcl private header detection.
+  # https://sourceforge.net/p/expect/patches/17/
+  patch do
+    url "https://sourceforge.net/p/expect/patches/17/attachment/expect_detect_tcl_private_header_os_x_mountain_lion.patch"
+    sha256 "bfce1856da9aaf5bcb89673da3be4f96611658cb05d5fbbba3f5287e359ff686"
+  end
+
+  def install
+    args = ["--prefix=#{prefix}", "--exec-prefix=#{prefix}", "--mandir=#{man}"]
+    args << "--enable-shared"
+    args << "--enable-threads" if build.with? "threads"
+    args << "--enable-64bit" if MacOS.prefer_64_bit?
+
+    if build.with? "brewed-tk"
+      args << "--with-tcl=#{Formula["tcl-tk"].opt_prefix}/lib"
+    else
+      ENV.prepend "CFLAGS", "-I#{MacOS.sdk_path}/System/Library/Frameworks/Tcl.framework/Versions/8.5/Headers/tcl-private"
+      args << "--with-tcl=#{MacOS.sdk_path}/usr/lib"
+    end
+    # Regenerate configure script. Remove after patch applied in newer
+    # releases.
+    system "autoreconf", "--force", "--install", "--verbose"
+
+    system "./configure", *args
+    system "make"
+    system "make", "install"
+    lib.install_symlink Dir[lib/"expect*/libexpect*"]
+  end
+
+  test do
+    system "#{bin}/mkpasswd"
+  end
+end