Added host-building mixer test

Tools/tests-host/Makefile

@@ -0,0 +1,36 @@
+
+CC=g++
+CFLAGS=-I. -I../../src/modules -I ../../src/include -I../../src/drivers -I../../src -D__EXPORT="" -Dnullptr="0"
+
+ODIR=obj
+LDIR =../lib
+
+LIBS=-lm
+
+#_DEPS = test.h
+#DEPS = $(patsubst %,$(IDIR)/%,$(_DEPS))
+
+_OBJ = mixer_test.o test_mixer.o mixer_simple.o mixer_multirotor.o mixer.o mixer_group.o
+OBJ = $(patsubst %,$(ODIR)/%,$(_OBJ))
+
+#$(DEPS)
+$(ODIR)/%.o: %.cpp
+	$(CC) -c -o $@ $< $(CFLAGS)
+
+$(ODIR)/%.o: ../../src/systemcmds/tests/%.c
+	$(CC) -c -o $@ $< $(CFLAGS)
+
+$(ODIR)/%.o: ../../src/modules/systemlib/%.cpp
+	$(CC) -c -o $@ $< $(CFLAGS)
+
+$(ODIR)/%.o: ../../src/modules/systemlib/mixer/%.cpp
+	$(CC) -c -o $@ $< $(CFLAGS)
+
+#
+mixer_test: $(OBJ)
+	g++ -o $@ $^ $(CFLAGS) $(LIBS)
+
+.PHONY: clean
+
+clean:
+	rm -f $(ODIR)/*.o *~ core $(INCDIR)/*~