Working Futhark! 🎉

That was actually easier than expected, and (surprise!) it runs ORDERS
OF MAGNITUDE faster than my C++ implementation...
C++ takes ~1min on my i5-4278U CPU @ 2.60GHz using all 4 virtual cores;
the Futhark takes ~11sec on 1 core. Not sure whether my own code is so
terribly bad or whether Futhark is cool, but this is cool nevertheless.

1 files changed, 17 insertions, 6 deletions

diff --git a/aberth/Makefile b/aberth/Makefile
index c5a67cf..f610c01 100644
--- a/aberth/Makefile
+++ b/aberth/Makefile
@@ -1,20 +1,31 @@
 CXX = g++
-CXXFLAGS = -Wall -Wextra -std=c++17 -O3 -fwrapv -ffast-math -march=native -mtune=native
-LDFLAGS = -pthread
+CXXFLAGS = -Wall -Wextra -std=c++17 -fwrapv $(OPTFLAGS)
+OPTFLAGS = -O3 -ffast-math -march=native -mtune=native
+LDFLAGS = -pthread -framework OpenCL
+
+TARGETS = aberth
+
+OBJECTS = $(patsubst %.cpp,%.o,$(wildcard *.cpp))
 
 .PHONY: all clean remake
 
-all: aberth
+all: $(TARGETS)
 
 clean:
-	rm -f aberth *.o
+	rm -f $(TARGETS) *.o aberth_kernel.h aberth_kernel.c
 
 remake: clean
 	$(MAKE) all
 
 
-aberth: $(patsubst %.cpp,%.o,$(wildcard *.cpp)) ../lodepng.o
+aberth: $(OBJECTS) aberth_kernel.o ../lodepng.o
 	$(CXX) -o $@ $^ $(LDFLAGS)
 
-%.o: %.cpp $(wildcard *.h)
+aberth_kernel.h: aberth_kernel.fut
+	futhark c --library $^
+
+aberth_kernel.o: aberth_kernel.h
+	gcc -c $(OPTFLAGS) -o $@ aberth_kernel.c
+
+$(OBJECTS): %.o: %.cpp $(wildcard *.h) aberth_kernel.h
 	$(CXX) $(CXXFLAGS) -c -o $@ $<