diff --git a/Makefile b/Makefile
index 6b2b6ca2e..567911120 100644
--- a/Makefile
+++ b/Makefile
@@ -80,7 +80,7 @@ ifeq ($(CXX), clang++)
     CPPCHK_GLIBCXX_DEBUG=
 endif
 ifndef CXXFLAGS
-    CXXFLAGS=-include lib/cxx11emu.h -pedantic -Wall -Wextra -Wabi -Wcast-qual -Wfloat-equal -Winline -Wmissing-declarations -Wmissing-format-attribute -Wno-long-long -Wpacked -Wredundant-decls -Wshadow -Wno-missing-field-initializers -Wno-missing-braces -Wno-sign-compare -Wno-multichar $(CPPCHK_GLIBCXX_DEBUG) -g
+    CXXFLAGS=-std=c++0x -O2 -include lib/cxx11emu.h -DNDEBUG -Wall -Wno-sign-compare
 endif
 
 ifeq ($(CXX), g++)