Makefile: Set release mode

Author: danmar

Makefile

@@ -80,7 +80,7 @@ ifeq (clang++, $(findstring clang++,$(CXX)))
     CPPCHK_GLIBCXX_DEBUG=
 endif
 ifndef CXXFLAGS
-    CXXFLAGS=-pedantic -Wall -Wextra -Wabi -Wcast-qual -Wfloat-equal -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 -DNDEBUG -Wall -Wno-sign-compare
 endif
 
 ifeq (g++, $(findstring g++,$(CXX)))