#if you are a mac user use the following line
TARGET_ARCH += -arch x86_64
+ #if you using cygwin to build Windows the following line
+ #CXX = x86_64-w64-mingw32-g++
+ #CC = x86_64-w64-mingw32-g++
+ #TARGET_ARCH += -m64
+
#if you are a linux user use the following line
#CXXFLAGS += -mtune=native -march=native -m64