From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from youngberry.canonical.com (youngberry.canonical.com [91.189.89.112]) by dpdk.org (Postfix) with ESMTP id 51AC969FE for ; Wed, 6 Jul 2016 11:13:11 +0200 (CEST) Received: from 1.general.paelzer.uk.vpn ([10.172.196.172] helo=localhost.localdomain) by youngberry.canonical.com with esmtpsa (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.76) (envelope-from ) id 1bKitJ-0007ec-6T; Wed, 06 Jul 2016 09:13:09 +0000 From: Christian Ehrhardt To: christian.ehrhardt@canonical.com, ferruh.yigit@intel.com, thomas.monjalon@6wind.com, dev@dpdk.org Date: Wed, 6 Jul 2016 11:13:06 +0200 Message-Id: <1467796386-20291-1-git-send-email-christian.ehrhardt@canonical.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: References: Subject: [dpdk-dev] [PATCH v4] mk: filter duplicate configuration entries X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 06 Jul 2016 09:13:11 -0000 *updates in v4* - replace awk usage with sed - re-add the old loop to be able to get rid of awk - add more explanation to the header of the makefile section *updates in v3* - replace tac with sed '1!G;h;$!d' to avoid build time dependency *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 --- mk/rte.sdkconfig.mk | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/mk/rte.sdkconfig.mk b/mk/rte.sdkconfig.mk index a3acfe6..70c59d6 100644 --- a/mk/rte.sdkconfig.mk +++ b/mk/rte.sdkconfig.mk @@ -79,11 +79,20 @@ $(RTE_OUTPUT): 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) ; \ + for config in $$(grep -v "^#" $(RTE_OUTPUT)/.config_tmp | cut -d"=" -f1 | sort | uniq -d); do \ + while [ $$(grep "^$${config}=" $(RTE_OUTPUT)/.config_tmp -c ) -gt 1 ]; do \ + sed -i "0,/^$${config}=/{//d}" $(RTE_OUTPUT)/.config_tmp; \ + done; \ + done; \ 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