Got build/execute/report working.

Makefile

@@ -0,0 +1,32 @@
+
+BUILD_DIR ?= build
+ARCHS = -arch arm64 # -arch x86_64
+CC = clang++
+CCFLAGS += -std=c++17 -finput-charset=utf-8 -fdiagnostics-show-template-tree -fno-elide-type -g $(ARCHS) --stdlib=libc++
+LD = clang++
+LDFLAGS += $(ARCHS)
+
+.Phony: clean all $(BUILD_DIR)/test.txt
+
+all: $(BUILD_DIR)/test.txt $(BUILD_DIR)/examples/example
+	@echo $(BUILD_DIR)
+
+clean:
+	rm -rf $(BUILD_DIR)
+	mkdir -p $(BUILD_DIR)/examples
+	@echo CC=$(CC)
+	@echo CCFLAGS=$(CCFLAGS)
+	@echo LD=$(LD)
+	@echo LDFLAGS=$(LDFLAGS)
+
+$(BUILD_DIR)/test.txt:
+	@echo $(BUILD_DIR)/test.txt
+
+$(BUILD_DIR)/examples/example: $(BUILD_DIR)/examples/example.o $(BUILD_DIR)/examples/JTest.o
+	$(LD) $(LDFLAGS) -o $@ $^
+
+$(BUILD_DIR)/examples/example.o:  examples/example.cpp examples/ClassToTest.h examples/JTest.h
+	$(CC) $(CCFLAGS) -c -o $@ $<
+
+$(BUILD_DIR)/examples/JTest.o: examples/JTest.cpp examples/JTest.h
+	$(CC) $(CCFLAGS) -c -o $@ $<