1 files changed, 11 insertions, 11 deletions
diff --git a/Library/Formula/tree.rb b/Library/Formula/tree.rb
index 2380672c7..de5e92cc8 100644
--- a/Library/Formula/tree.rb
+++ b/Library/Formula/tree.rb
@@ -1,21 +1,21 @@
 require 'formula'
 
 class Tree < Formula
-  url 'http://mama.indstate.edu/users/ice/tree/src/tree-1.6.0.tgz'
   homepage 'http://mama.indstate.edu/users/ice/tree/'
+  url 'http://mama.indstate.edu/users/ice/tree/src/tree-1.6.0.tgz'
   md5 '04e967a3f4108d50cde3b4b0e89e970a'
 
   def install
-    inreplace 'Makefile' do |s|
-      s.change_make_var! 'prefix', prefix
-      s.change_make_var! 'MANDIR', man1
-      s.change_make_var! 'CC', ENV.cc
-      s.change_make_var! 'CFLAGS', "#{ENV.cflags} -fomit-frame-pointer -no-cpp-precomp"
-      s.remove_make_var! 'LDFLAGS'
-      s.change_make_var! 'OBJS', 'tree.o unix.o html.o xml.o hash.o color.o strverscmp.o'
-    end
+    ENV.append 'CFLAGS', '-fomit-frame-pointer'
+    ENV.append 'CFLAGS', '-no-cpp-precomp' unless ENV.compiler == :clang
+    objs = 'tree.o unix.o html.o xml.o hash.o color.o strverscmp.o'
 
-    system "make"
-    system "make install"
+    system "make", "prefix=#{prefix}",
+                   "MANDIR=#{man1}",
+                   "CC=#{ENV.cc}",
+                   "CFLAGS=#{ENV.cflags}",
+                   "LDFLAGS=#{ENV.ldflags}",
+                   "OBJS=#{objs}",
+                   "install"
   end
 end