diff --git a/Makefile b/Makefile
index fc3c7e2..9cabefc 100644
--- a/Makefile
+++ b/Makefile
@@ -1,16 +1,16 @@
 # may or may not work, most stuff okay on:
 # gcc (Ubuntu/Linaro 4.6.3-1ubuntu5) 4.6.3
-CXX=g++
-CPPFLAGS=-Wall -g -std=c++0x -pthread
+# CXX=g++
+# CPPFLAGS=-Wall -g -std=c++0x -pthread
 
 # works with g++-4.7:
 # CXX=g++-4.7
 # CPPFLAGS=-Wall -g -std=c++0x -pthread
 
-# works on clang (on ubuntu and mac) build following this:
+# works on clang 3.2 build following this:
 # http://solarianprogrammer.com/2011/10/16/llvm-clang-libc-linux/
-# CXX=clang++
-# CPPFLAGS=-Wall -g -std=c++0x -stdlib=libc++ -L/opt/clang/lib -pthread
+CXX=clang++
+CPPFLAGS=-Wall -g -std=c++0x -stdlib=libc++ -L/opt/clang/lib -pthread
 
 all: auto constexpr ilists init init_new lambda loops thread thread2 tuple