1 files changed, 20 insertions, 0 deletions
diff --git a/Library/Formula/icu4c.rb b/Library/Formula/icu4c.rb
index d5071fa20..e3bc0ef44 100644
--- a/Library/Formula/icu4c.rb
+++ b/Library/Formula/icu4c.rb
@@ -22,6 +22,26 @@ class Icu4c <Formula
       system "make"
       system "make install"
     end
+
+    # fix install_names
+    lib.children.reject{ |pn| pn.symlink? or pn.extname != '.dylib' }.each do |dylib|
+      bad_names(dylib) do |id, bad_names|
+        cd lib do
+          system "install_name_tool", "-id", (lib+id).realpath, dylib.basename
+          bad_names.each do |bad|
+            system "install_name_tool", "-change", bad, (lib+bad.basename).realpath, dylib.basename
+          end
+        end
+      end
+    end
+  end
+
+  def bad_names pn
+    ENV['HOMEBREW_PN'] = pn.to_s
+    rx = /\t(.*) \(compatibility version (\d+\.)*\d+, current version (\d+\.)*\d+\)/
+    dylibs = `otool -L "$HOMEBREW_PN"`.split "\n"
+    dylibs = dylibs.map{ |fn| rx =~ fn && $1 }.compact.reject{ |fn| fn[0].chr == '/' }.map{ |fn| p fn; Pathname.new fn }
+    yield dylibs.shift, dylibs
   end
 end