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-rw-r--r--builddefs/common_rules.mk5
1 files changed, 4 insertions, 1 deletions
diff --git a/builddefs/common_rules.mk b/builddefs/common_rules.mk
index 261ab7da02..52dccbe475 100644
--- a/builddefs/common_rules.mk
+++ b/builddefs/common_rules.mk
@@ -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))))))
@@ -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)