ifdef NODOTCONF
$(RTE_OUTPUT)/.config: ;
else
+# Generate config from template, if there are duplicates keep only the last.
+# To do so the temp config is checked for duplicate keys with cut/sort/uniq
+# Then for each of those identified duplicates as long as there are more than
+# just one left the last match is removed.
$(RTE_OUTPUT)/.config: $(RTE_CONFIG_TEMPLATE) FORCE | $(RTE_OUTPUT)
$(Q)if [ "$(RTE_CONFIG_TEMPLATE)" != "" -a -f "$(RTE_CONFIG_TEMPLATE)" ]; then \
$(CPP) -undef -P -x assembler-with-cpp \
-ffreestanding \
-o $(RTE_OUTPUT)/.config_tmp $(RTE_CONFIG_TEMPLATE) ; \
+ config=$$(cat $(RTE_OUTPUT)/.config_tmp) ; \
+ echo "$$config" | awk -F '=' 'BEGIN {i=1} \
+ /^#/ {pos[i++]=$$0} \
+ !/^#/ {if (!s[$$1]) {pos[i]=$$0; s[$$1]=i++} \
+ else {pos[s[$$1]]=$$0}} END \
+ {for (j=1; j<i; j++) print pos[j]}' \
+ > $(RTE_OUTPUT)/.config_tmp ; \
if ! cmp -s $(RTE_OUTPUT)/.config_tmp $(RTE_OUTPUT)/.config; then \
cp $(RTE_OUTPUT)/.config_tmp $(RTE_OUTPUT)/.config ; \
cp $(RTE_OUTPUT)/.config_tmp $(RTE_OUTPUT)/.config.orig ; \