genlink: provide LIBDEPS for libopencm3 itself
If $(OPENCM3_DIR)/lib/libopencm3_*.a exists, it will be linked in. If we do that, we should also add it to the deps. That way a newer *.a will result in a relink. To use this, you should add a dependency to $(LIBDEPS) where you are using $(LDFLAGS) and $(LDLIBS) now. eg, old (wouldn't relink if the library changed) $(PROJECT).elf: $(OBJS) $(LDSCRIPT) @printf " LD\t$@\n" $(Q)$(LD) $(TGT_LDFLAGS) $(LDFLAGS) $(OBJS) $(LDLIBS) -o $@ new (will relink when the library changes) $(PROJECT).elf: $(OBJS) $(LDSCRIPT) $(LIBDEPS) @printf " LD\t$@\n" $(Q)$(LD) $(TGT_LDFLAGS) $(LDFLAGS) $(OBJS) $(LDLIBS) -o $@ Tested-by: Karl Palsson <karlp@tweak.net.au> Originally tracked via: https://github.com/libopencm3/libopencm3/pull/887
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@ -56,9 +56,11 @@ endif
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# where those are provided by different means
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ifneq (,$(wildcard $(OPENCM3_DIR)/lib/libopencm3_$(genlink_family).a))
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LDLIBS += -lopencm3_$(genlink_family)
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LIBDEPS += $(OPENCM3_DIR)/lib/libopencm3_$(genlink_family).a
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else
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ifneq (,$(wildcard $(OPENCM3_DIR)/lib/libopencm3_$(genlink_subfamily).a))
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LDLIBS += -lopencm3_$(genlink_subfamily)
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LIBDEPS += $(OPENCM3_DIR)/lib/libopencm3_$(genlink_subfamily).a
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else
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$(warning $(OPENCM3_DIR)/lib/libopencm3_$(genlink_family).a library variant for the selected device does not exist.)
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endif
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