rewrite MKL flag note, polish makefile

add MKL dirs conditioned on USE_MKL
include libraries before making LD_FLAGS

Makefile

@@ -86,34 +86,35 @@ CUDA_LIB_DIR := $(CUDA_DIR)/lib64 $(CUDA_DIR)/lib
 MKL_INCLUDE_DIR := $(MKL_DIR)/include
 MKL_LIB_DIR := $(MKL_DIR)/lib $(MKL_DIR)/lib/intel64
 
-INCLUDE_DIRS += ./src ./include $(CUDA_INCLUDE_DIR) $(MKL_INCLUDE_DIR)
-LIBRARY_DIRS += $(CUDA_LIB_DIR) $(MKL_LIB_DIR)
+INCLUDE_DIRS += ./src ./include $(CUDA_INCLUDE_DIR)
+LIBRARY_DIRS += $(CUDA_LIB_DIR)
 LIBRARIES := cudart cublas curand \
-	openblas \
 	pthread \
-	glog protobuf \
-	leveldb snappy \
+	glog protobuf leveldb snappy \
 	boost_system \
 	hdf5_hl hdf5 \
 	opencv_core opencv_highgui opencv_imgproc
 PYTHON_LIBRARIES := boost_python python2.7
 WARNINGS := -Wall
 
-COMMON_FLAGS := -DNDEBUG -O2 $(foreach includedir,$(INCLUDE_DIRS),-I$(includedir))
-CXXFLAGS += -pthread -fPIC $(COMMON_FLAGS)
-NVCCFLAGS := -ccbin=$(CXX) -Xcompiler -fPIC $(COMMON_FLAGS)
-LDFLAGS += $(foreach librarydir,$(LIBRARY_DIRS),-L$(librarydir)) \
-		$(foreach library,$(LIBRARIES),-l$(library))
-PYTHON_LDFLAGS := $(LDFLAGS) $(foreach library,$(PYTHON_LIBRARIES),-l$(library))
+COMMON_FLAGS := -DNDEBUG -O2
 
-# MKL options
+# MKL switch
 ifdef USE_MKL
   LIBRARIES += mkl_rt
   COMMON_FLAGS += -DUSE_MKL
+  INCLUDE_DIRS += $(MKL_INCLUDE_DIR)
+  LIBRARY_DIRS += $(MKL_LIB_DIR)
 else
   LIBRARIES += atlas cblas
 endif
 
+COMMON_FLAGS += $(foreach includedir,$(INCLUDE_DIRS),-I$(includedir))
+CXXFLAGS += -pthread -fPIC $(COMMON_FLAGS)
+NVCCFLAGS := -ccbin=$(CXX) -Xcompiler -fPIC $(COMMON_FLAGS)
+LDFLAGS += $(foreach librarydir,$(LIBRARY_DIRS),-L$(librarydir)) \
+		$(foreach library,$(LIBRARIES),-l$(library))
+PYTHON_LDFLAGS := $(LDFLAGS) $(foreach library,$(PYTHON_LIBRARIES),-l$(library))
 
 ##############################
 # Define build targets

Makefile.config.example

@@ -10,8 +10,8 @@ CUDA_ARCH := -gencode arch=compute_20,code=sm_20 \
     -gencode arch=compute_30,code=sm_30 \
     -gencode arch=compute_35,code=sm_35
 
-# If not using MKL, comment out the following line.
-# USE_MKL=1
+# If using MKL, uncomment the following line
+# USE_MKL := 1
 # MKL directory contains include/ and lib/ directions that we need.
 MKL_DIR := /opt/intel/mkl