# A few common Makefile items
-CC=gcc
-CXX=g++
+CC = gcc
+CXX = g++
-LIB_NAME=model
-LIB_SO=lib$(LIB_NAME).so
+UNAME = $(shell uname)
-CPPFLAGS=-Wall -g -O0
+LIB_NAME = model
+LIB_SO = lib$(LIB_NAME).so
+
+CPPFLAGS += -Wall -g
+
+# Mac OSX options
+ifeq ($(UNAME), Darwin)
+CPPFLAGS += -D_XOPEN_SOURCE -DMAC -O0
+else
+CPPFLAGS += -O3
+endif