add another if-else pair

Author: hgt312

Makefile

@@ -223,6 +223,7 @@ ifeq (,$(wildcard /lib/liblapack.a))
 ifeq (,$(wildcard /lib/liblapack.so))
 ifeq (,$(wildcard /usr/lib/liblapack.a))
 ifeq (,$(wildcard /usr/lib/liblapack.so))
+ifeq (,$(wildcard /usr/lib/liblapack.dylib))
 ifeq (,$(wildcard /usr/lib64/liblapack.a))
 ifeq (,$(wildcard /usr/lib64/liblapack.so))
 	USE_LAPACK = 0
@@ -238,6 +239,7 @@ endif
 endif
 endif
 endif
+endif
 
 # lapack settings.
 ifeq ($(USE_LAPACK), 1)