ruby: trivial build cleanup

diff --git a/bindings/ruby/extconf.rb b/bindings/ruby/extconf.rb
index b6115688a978d22fb3a5dfc21327458850ec500c..ba97670ffb751977cfca922f457e702b20d464fe 100644 (file)
--- a/bindings/ruby/extconf.rb
+++ b/bindings/ruby/extconf.rb
@@ -12,7 +12,7 @@ if not ENV['LIBNOTMUCH']
   exit 1
 end
 
-$LOCAL_LIBS += ENV['LIBNOTMUCH']
+$LOCAL_LIBS = ENV['LIBNOTMUCH']
 
 # Create Makefile
 dir_config('notmuch')