feat: enable CPU compilation of CUDA projects.

Author: lshqqytiger

nsy/cuda/.gitignore

@@ -1,3 +1,4 @@
 nsy
 nsy.o
+nsy.cpp
 nsy.cu.hip

nsy/cuda/Makefile

@@ -5,6 +5,7 @@ CXXFLAGS := -O3 -Wall -Wno-pedantic
 ifeq ($(CXX), nvcc)
 CXXFLAGS := -Xcompiler "$(CXXFLAGS)"
 endif
+LDFLAGS :=
 
 TARGET := nsy
 
@@ -14,14 +15,25 @@ OBJECTS := $(patsubst %.cu, %.o, $(SOURCES))
 all: $(TARGET)
 
 $(TARGET): $(OBJECTS)
-	$(CXX) $(CXXFLAGS) -o $@ $^
+	$(CXX) $(CXXFLAGS) $(LDFLAGS) -o $@ $^
+
+ifneq (,$(filter $(CXX),clang clang++))
+CXXFLAGS += -march=native -std=c++17
+LDFLAGS += -ltbb
+
+_SOURCES := $(SOURCES)
+SOURCES := $(patsubst %.cu, %.cpp, $(SOURCES))
+
+$(SOURCES): $(_SOURCES)
+	hipify-clang --hip-kernel-execution-syntax -o $@ $<
+endif
 
 ifeq ($(CXX), hipcc)
 _SOURCES := $(SOURCES)
 SOURCES := $(patsubst %.cu, %.cu.hip, $(SOURCES))
 
 $(SOURCES): $(_SOURCES)
-	hipify-clang $<
+	hipify-clang -o $@ $<
 endif
 
 $(OBJECTS): $(SOURCES)
@@ -30,4 +42,5 @@ $(OBJECTS): $(SOURCES)
 clean:
 	rm -f nsy
 	rm -f nsy.o
+	rm -f nsy.cpp
 	rm -f nsy.cu.hip

nsy/cuda/README.md

@@ -0,0 +1,26 @@
+# Build for CPU
+
+Requirements: clang compiler, [HIP-CPU](https://github.com/ROCm/HIP-CPU)
+
+```
+export CXX=clang++
+make
+```
+
+# Build for NVIDIA GPUs
+
+Requirements: NVIDIA Cuda compiler
+
+```
+export CXX=nvcc
+make
+```
+
+# Build for AMDGPUs
+
+Requirements: HIP C++ compiler, AMD clang compiler
+
+```
+export CXX=hipcc
+make
+```