* lib/mkmf.rb (merge_libs): squeeze successive same libraries.

[ruby-dev:22652]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@5519 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Wed Jan 21 16:44:15 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* lib/mkmf.rb (merge_libs): squeeze successive same libraries.
+	  [ruby-dev:22652]
+
 Wed Jan 21 16:10:36 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* lib/base64.rb: enclosed in a module.  [ruby-core:02285]

lib/mkmf.rb

@@ -117,6 +117,7 @@ def merge_libs(*libs)
   libs.inject([]) do |x, y|
     xy = x & y
     xn = yn = 0
+    y = y.inject([]) {|ary, e| ary.last == e ? ary : ary << e}
     y.each_with_index do |v, yi|
       if xy.include?(v)
         xi = [x.index(v), xn].max()