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directly use object files when linking ELF #22025

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merged 1 commit into from
Sep 17, 2023
Merged

directly use object files when linking ELF #22025

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5 changes: 4 additions & 1 deletion builddefs/common_rules.mk
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Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,9 @@ vpath %.hpp $(VPATH_SRC)
vpath %.S $(VPATH_SRC)
VPATH :=

# Helper to return the distinct elements of a list
uniq = $(if $1,$(firstword $1) $(call uniq,$(filter-out $(firstword $1),$1)))

# Convert all SRC to OBJ
define OBJ_FROM_SRC
$(patsubst %.c,$1/%.o,$(patsubst %.cpp,$1/%.o,$(patsubst %.cc,$1/%.o,$(patsubst %.S,$1/%.o,$(patsubst %.clib,$1/%.a,$($1_SRC))))))
Expand Down Expand Up @@ -264,7 +267,7 @@ BEGIN = gccversion sizebefore
# Note the obj.txt depeendency is there to force linking if a source file is deleted
%.elf: $(OBJ) $(MASTER_OUTPUT)/cflags.txt $(MASTER_OUTPUT)/ldflags.txt $(MASTER_OUTPUT)/obj.txt | $(BEGIN)
@$(SILENT) || printf "$(MSG_LINKING) $@" | $(AWK_CMD)
$(eval CMD=MAKE=$(MAKE) $(CC) $(ALL_CFLAGS) $(filter-out %.txt,$^) --output $@ $(LDFLAGS))
$(eval CMD=MAKE=$(MAKE) $(CC) $(ALL_CFLAGS) $(call uniq,$(OBJ)) --output $@ $(LDFLAGS))
@$(BUILD_CMD)


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