Mac OS build support

Makefile

@@ -7,7 +7,9 @@ ifeq ($(OS),Windows_NT)
 else
     UNAME_S := $(shell uname -s)
     ifeq ($(UNAME_S),Linux)
-        MAKE = make       
+        MAKE = make
+    else ifeq ($(UNAME_S),Darwin)
+    	MAKE = make
     endif
 endif
 

Makefile.dirs

@@ -13,6 +13,10 @@ else
 		DSPL_LIBNAME = libdspl.so
 		DEF_OS = LINUX_OS
 		LFLAGS = -lm -ldl
+	else ifeq ($(UNAME_S),Darwin)
+		DSPL_LIBNAME = libdspl.so
+		DEF_OS = LINUX_OS
+		LFLAGS = -lm -ldl
 	endif
 endif