+$(object_dir)/alsa%.o $(dep_dir)/alsa%.d: CPPFLAGS += $(alsa_cppflags)
+
+$(object_dir)/interactive.o $(dep_dir)/interactive.d \
+: CPPFLAGS += $(readline_cppflags)
+
+$(object_dir)/resample_filter.o $(dep_dir)/resample_filter.d \
+: CPPFLAGS += $(samplerate_cppflags)
+
+$(object_dir)/oss_write.o $(dep_dir)/oss_write.d \
+: CPPFLAGS += $(oss_cppflags)
+
+$(object_dir)/ao_write.o $(dep_dir)/ao_write.d \
+: CPPFLAGS += $(ao_cppflags) $(pthread_cppflags)