-# Eliminate duplicates without sorting
-LDLIBS := $(shell echo $(LDLIBS) | \
- awk '{for (i = 1; i <= NF; i++) { \
- if ($$i !~ /^-l.*/ || !seen[$$i]++) print $$i }}')
+# all the words except the first one
+allbutfirst = $(wordlist 2,$(words $(1)),$(1))
+
+# Eliminate duplicates without sorting, only keep the last occurrence
+filter-libs = \
+ $(if $(1),$(strip\
+ $(if \
+ $(and \
+ $(filter $(firstword $(1)),$(call allbutfirst,$(1))),\
+ $(filter -l%,$(firstword $(1)))),\
+ ,\
+ $(firstword $(1))) \
+ $(call filter-libs,$(call allbutfirst,$(1)))))
+
+LDLIBS := $(call filter-libs,$(LDLIBS))