1 files changed, 28 insertions, 0 deletions
diff --git a/Library/Formula/libunwind-headers.rb b/Library/Formula/libunwind-headers.rb
new file mode 100644
index 000000000..04c4f107d
--- /dev/null
+++ b/Library/Formula/libunwind-headers.rb
@@ -0,0 +1,28 @@
+require 'formula'
+
+class LibunwindHeaders < Formula
+  homepage 'http://opensource.apple.com/'
+  url 'http://opensource.apple.com/tarballs/libunwind/libunwind-35.1.tar.gz'
+  sha1 '86908428aaa0ae6cec5038dc6eeb8b64dbb6cd63'
+
+  keg_only :provided_by_osx,
+    "This package includes official development headers not installed by Apple."
+
+  def install
+    inreplace "include/libunwind.h", "__MAC_10_6", "__MAC_NA" if MacOS.version < :snow_leopard
+
+    if MacOS.version < :leopard
+      inreplace "include/libunwind.h", /__OSX_AVAILABLE_STARTING\(__MAC_NA,.*\)/,
+        "__attribute__((unavailable))"
+
+      %w[include/libunwind.h include/unwind.h src/AddressSpace.hpp
+        src/InternalMacros.h].each do |header|
+        inreplace header, "Availability.h", "AvailabilityMacros.h"
+      end
+    end
+
+    include.install Dir['include/*']
+    (include/'libunwind').install Dir['src/*.h*']
+    (include/'libunwind/libunwind_priv.h').unlink
+  end
+end