*updates in v2* - move to .config target - fix usage order of tac - simplify inner section by only using awk (instead of awk+loop+bash+sed)
Due to the hierarchy and the demand to keep the base config showing all options, some config keys end up multiple times in the .config file. Due to the way the actual config is sourced only the last entry is important. That can confuse people changing values in .config which are then ignored. A suggested solution was to filter for duplicates at the end of the actual config step which is implemented here. Signed-off-by: Christian Ehrhardt <christian.ehrhardt at canonical.com> --- mk/rte.sdkconfig.mk | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/mk/rte.sdkconfig.mk b/mk/rte.sdkconfig.mk index a3acfe6..6c46122 100644 --- a/mk/rte.sdkconfig.mk +++ b/mk/rte.sdkconfig.mk @@ -79,11 +79,17 @@ $(RTE_OUTPUT): ifdef NODOTCONF $(RTE_OUTPUT)/.config: ; else +# Generate config from template, if there are duplicates keep only the last $(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) ; \ + tac $(RTE_OUTPUT)/.config_tmp > $(RTE_OUTPUT)/.config_tmp_reverse ; \ + awk --field-separator '=' '!/^#/ {if (!seen[$$1]) {print ($$0)}; seen[$$1]=1;} \ + /^#/ {print($$0)}' $(RTE_OUTPUT)/.config_tmp_reverse \ + | tac > $(RTE_OUTPUT)/.config_tmp ; \ + rm $(RTE_OUTPUT)/.config_tmp_reverse ; \ 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 ; \ -- 2.7.4