Add Threading Building Blocks

Formula/tbb.rb

@@ -0,0 +1,24 @@
+require 'formula'
+
+class Tbb <Formula
+  url 'http://www.threadingbuildingblocks.org/uploads/77/148/3.0/tbb30_20100310oss_src.tgz'
+  version '30_20100310'
+  homepage 'http://www.threadingbuildingblocks.org/'
+  md5 'a7dc9b6aa6f33e6f6228cdc26c4a0899'
+
+  def install
+    # Override build prefix so we can copy the dylibs out of the same place
+    # no matter what system we're on
+    args = ['tbb_build_prefix=BUILDPREFIX']
+
+    if MACOS_VERSION >= 10.6 and Hardware.is_64_bit?
+      args << "arch=intel64"
+    else
+      args << "arch=ia32"
+    end
+
+    system "make", *args
+    lib.install Dir['build/BUILDPREFIX_release/*.dylib']
+    include.install 'include/tbb'
+  end
+end