New Formula: DBSLayer

Signed-off-by: Adam Vandenberg <flangy@gmail.com>

* And warning and caveats about MySQL dependency.

Formula/dbslayer.rb

@@ -0,0 +1,35 @@
+require 'formula'
+
+class Dbslayer <Formula
+  url 'http://code.nytimes.com/downloads/dbslayer-beta-12.tgz'
+  homepage 'http://code.nytimes.com/projects/dbslayer/wiki'
+  md5 'a529ea503c244d723166f78c75df3bb3'
+  version '0.12.b'
+
+  def install
+    unless `/usr/bin/which mysql_config`.size > 0
+      opoo "No MySQL client library detected"
+      puts "This formula may fail to build, see caveats for more information."
+    end
+
+    system "./configure", "--prefix=#{prefix}"
+    system "make"
+    system "make install"
+  end
+
+  def caveats
+    <<-EOS.undent
+    DBSlayer depends on a MySQL client library.
+
+    You can install this with Homebrew using:
+      brew install mysql
+        For MySQL server.
+
+      brew install mysql-connector-c
+        For MySQL client libraries only.
+
+    We don't install these for you when you install this formula, as
+    we don't know which datasource you intend to use.
+    EOS
+  end
+end