b32a0fd092
If a module sets MODULE_STATIC_LIB to true, that module will generate a .a file instead of a partially linked .o file. When WITH_LINKER_GC is enables, unreferenced code and data in c files are dropped from the final elf file. This does not work for most assembly files, since they put code and data directly into the .text and .data section. If a .a file is used instead however, files that have no external references are dropped regardless of which sections they have. If MODULE_STATIC_LIB is true, this change also disabled LK_INIT_HOOK* as files using this as the only entrypoint would also be dropped. Change-Id: I846ac1bf63018d1d713ca841e03191b1fac35bf4
63 lines
1.8 KiB
Makefile
63 lines
1.8 KiB
Makefile
# use linker garbage collection, if requested
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ifeq ($(WITH_LINKER_GC),1)
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GLOBAL_COMPILEFLAGS += -ffunction-sections -fdata-sections
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GLOBAL_LDFLAGS += --gc-sections
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endif
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ifneq (,$(EXTRA_BUILDRULES))
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-include $(EXTRA_BUILDRULES)
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endif
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$(EXTRA_LINKER_SCRIPTS):
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$(OUTBIN): $(OUTELF)
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@echo generating image: $@
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$(NOECHO)$(SIZE) $<
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$(NOECHO)$(OBJCOPY) -O binary $< $@
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$(OUTELF).hex: $(OUTELF)
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@echo generating hex file: $@
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$(NOECHO)$(OBJCOPY) -O ihex $< $@
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$(OUTELF): $(ALLMODULE_OBJS) $(EXTRA_OBJS) $(LINKER_SCRIPT) $(EXTRA_LINKER_SCRIPTS)
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@echo linking $@
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$(NOECHO)$(SIZE) -t --common $(sort $(ALLMODULE_OBJS)) $(EXTRA_OBJS)
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$(NOECHO)$(LD) $(GLOBAL_LDFLAGS) -dT $(LINKER_SCRIPT) $(addprefix -T,$(EXTRA_LINKER_SCRIPTS)) \
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--start-group $(ALLMODULE_OBJS) $(EXTRA_OBJS) --end-group $(LIBGCC) -Map=$(OUTELF).map -o $@
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$(OUTELF).sym: $(OUTELF)
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@echo generating symbols: $@
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$(NOECHO)$(OBJDUMP) -t $< | $(CPPFILT) > $@
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$(OUTELF).sym.sorted: $(OUTELF)
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@echo generating sorted symbols: $@
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$(NOECHO)$(OBJDUMP) -t $< | $(CPPFILT) | sort > $@
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$(OUTELF).lst: $(OUTELF)
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@echo generating listing: $@
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$(NOECHO)$(OBJDUMP) -Mreg-names-raw -d $< | $(CPPFILT) > $@
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$(OUTELF).debug.lst: $(OUTELF)
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@echo generating listing: $@
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$(NOECHO)$(OBJDUMP) -Mreg-names-raw -S $< | $(CPPFILT) > $@
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$(OUTELF).dump: $(OUTELF)
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@echo generating objdump: $@
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$(NOECHO)$(OBJDUMP) -x $< > $@
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$(OUTELF).size: $(OUTELF)
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@echo generating size map: $@
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$(NOECHO)$(NM) -S --size-sort $< > $@
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# print some information about the build
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$(BUILDDIR)/srcfiles.txt: $(OUTELF)
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@echo generating $@
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$(NOECHO)echo $(sort $(ALLSRCS)) | tr ' ' '\n' > $@
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$(BUILDDIR)/include_paths.txt: $(OUTELF)
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@echo generating $@
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$(NOECHO)echo $(subst -I,,$(sort $(GLOBAL_INCLUDES))) | tr ' ' '\n' > $@
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#include arch/$(ARCH)/compile.mk
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