Add OpenACC Makefile

OpenACC.make

@@ -0,0 +1,30 @@
+
+ifndef COMPILER
+$(info Define a compiler to set common defaults, i.e make COMPILER=GNU)
+endif
+
+COMPILER_ = $(CXX)
+COMPILER_PGI = pgc++
+COMPILER_CRAY = CC
+CXX = $(COMPILER_$(COMPILER))
+
+FLAGS_ = -O3
+
+FLAGS_PGI = -std=c++11 -O3 -acc
+ifeq ($(COMPILER), PGI)
+ifndef TARGET
+$(info Set a TARGET to ensure PGI targets the correct offload device. i.e. TARGET=GPU or CPU)
+endif
+endif
+ifeq ($(TARGET), GPU)
+FLAGS_PGI += -ta=nvidia
+else ifeq ($(TARGET), CPU)
+FLAGS_PGI += -ta=multicore
+endif
+
+FLAGS_CRAY = -hstd=c++11
+CFLAGS = $(FLAGS_$(COMPILER))
+
+acc-stream: main.cpp ACCStream.cpp
+	$(CXX) $(CFLAGS) -DACC $^ $(EXTRA_FLAGS) -o $@
+