b: add new b

b.txt

@@ -0,0 +1,58 @@
+class Babl < Formula
+  desc "Dynamic, any-to-any, pixel format translation library"
+  homepage "http://www.gegl.org/babl/"
+  url "https://download.gimp.org/pub/babl/0.1/babl-0.1.16.tar.bz2"
+  mirror "https://mirrors.kernel.org/debian/pool/main/b/babl/babl_0.1.16.orig.tar.bz2"
+  sha256 "7d6ba55ec53ee6f6bf6945beec28839d09ff72376f4d83035eb379cd4f3e980e"
+
+  bottle do
+    sha256 "b6eaf46444795d0f3ad5f6dae51212403057baca537912d53c5b65ff87f9e694" => :el_capitan
+    sha256 "a47b7f4832814eb4effdf8b11fd5763f48ae6ab330e823dfd88b55923fa33c05" => :yosemite
+    sha256 "94cb19207e867b58f77fe6c2ba3629a6595a994722840ad657c5461743b5f2ac" => :mavericks
+  end
+
+  head do
+    # Use Github instead of GNOME's git. The latter is unreliable.
+    url "https://github.com/GNOME/babl.git"
+
+    depends_on "automake" => :build
+    depends_on "autoconf" => :build
+    depends_on "libtool" => :build
+  end
+
+  option :universal
+
+  depends_on "pkg-config" => :build
+
+  if build.universal?
+    fails_with :gcc_4_0
+    fails_with :gcc
+    ("4.3".."5.1").each do |n|
+      fails_with :gcc => n
+    end
+  end
+
+  def install
+    ENV.universal_binary if build.universal?
+    system "./autogen.sh" if build.head?
+    system "./configure", "--disable-dependency-tracking",
+                          "--prefix=#{prefix}"
+    system "make", "install"
+  end
+
+  test do
+    (testpath/"test.c").write <<-EOS.undent
+      #include <babl/babl.h>
+      int main() {
+        babl_init();
+        const Babl *srgb = babl_format ("R'G'B' u8");
+        const Babl *lab  = babl_format ("CIE Lab float");
+        const Babl *rgb_to_lab_fish = babl_fish (srgb, lab);
+        babl_exit();
+        return 0;
+      }
+    EOS
+    system ENV.cc, "-I#{include}/babl-0.1", "-L#{lib}", "-lbabl-0.1", testpath/"test.c", "-o", "test"
+    system testpath/"test"
+  end
+end