From: Ferruh Yigit <ferruh.yigit@intel.com>
To: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Cc: Thomas Monjalon <thomas.monjalon@6wind.com>, dev <dev@dpdk.org>
Subject: Re: [dpdk-dev] [RFC] mk: filter duplicate configuration entries
Date: Tue, 28 Jun 2016 17:48:08 +0100 [thread overview]
Message-ID: <5772AA48.2090209@intel.com> (raw)
In-Reply-To: <CAATJJ0+Mh_pFHrJ_G3x0Z8i3xeCZu388evha5yiCya+1v8Bq-A@mail.gmail.com>
On 6/28/2016 5:38 PM, Christian Ehrhardt wrote:
> On Tue, Jun 28, 2016 at 6:11 PM, Ferruh Yigit <ferruh.yigit@intel.com
> <mailto:ferruh.yigit@intel.com>> wrote:
>
> On 6/13/2016 4:10 PM, Christian Ehrhardt wrote:
> > Due to the hierarchy and the demand to keep the base config shoing all
> > options some options end up multiple times in the .config file.
> >
> > 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@canonical.com
> <mailto:christian.ehrhardt@canonical.com>>
> > ---
> > mk/rte.sdkconfig.mk <http://rte.sdkconfig.mk> | 5 +++++
> > 1 file changed, 5 insertions(+)
> >
> > diff --git a/mk/rte.sdkconfig.mk <http://rte.sdkconfig.mk> b/mk/rte.sdkconfig.mk
> <http://rte.sdkconfig.mk>
> > index a3acfe6..734aa06 100644
> > --- a/mk/rte.sdkconfig.mk <http://rte.sdkconfig.mk>
> > +++ b/mk/rte.sdkconfig.mk <http://rte.sdkconfig.mk>
> > @@ -70,6 +70,11 @@ config: notemplate
> > else
> > config: $(RTE_OUTPUT)/include/rte_config.h $(RTE_OUTPUT)/Makefile
> Not sure if this should go under this rule, or "$(RTE_OUTPUT)/.config:"
> and should work with ".config_tmp".
>
> > $(Q)$(MAKE) depdirs
> > + tac $(RTE_OUTPUT)/.config | awk --field-separator '=' '!/^#/ {print $$1}' | while read config; do \
> Why reversing file since already checking all lines one by one in
> original file?
>
>
> Hi,
> every other comment is ok I'll rebase and resubmit once I find some time
> again.
> But for this (tac) the reason is simple - to keep behaviour.
> Currently the last one wins.
Correct, but if I am not missing something, reversing doesn't help to this,
how lines deleted taking care of this:
sed -i "0,/$${config}/{//d}" $(RTE_OUTPUT)/.config;
sed works on original file, and deletes first occurrence, independent
from lines from bottom to up, or up to bottom fed into it.
> So if you have
> CONFIG_A=n
> CONFIG_A=y
>
> Essentially you have
> CONFIG_A=y
>
> By the tac and keeping the first occurrence we maintain behavior.
> It is interestingly hard to "keep the last occurrence" without such
> tricks, but I'm open to suggestions.
>
>
> And instead of checking each line, it is possible to get list of
> duplicates via "sort | uniq -d".
>
>
> That would fail for the reasons outlined above.
>
> Although less important, file comments also tripled in final .config.
>
> > + if [ $$(grep "^$${config}=" $(RTE_OUTPUT)/.config | wc -l) -gt 1 ]; then \
> "grep -c" can be used instead of "grep | wc -l"
>
> > + sed -i "0,/$${config}/{//d}"
> $(RTE_OUTPUT)/.config; \
> > + fi; \
> > + done
> > @echo "Configuration done"
> > endif
> >
> >
>
>
next prev parent reply other threads:[~2016-06-28 16:48 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-13 11:50 [dpdk-dev] Duplicate config symbols Christian Ehrhardt
2016-06-13 13:07 ` Ferruh Yigit
2016-06-13 13:47 ` Thomas Monjalon
2016-06-13 15:09 ` Christian Ehrhardt
2016-06-13 15:10 ` [dpdk-dev] [RFC] mk: filter duplicate configuration entries Christian Ehrhardt
2016-06-28 16:11 ` Ferruh Yigit
2016-06-28 16:38 ` Christian Ehrhardt
2016-06-28 16:48 ` Ferruh Yigit [this message]
2016-06-30 11:57 ` Christian Ehrhardt
2016-06-30 12:00 ` [dpdk-dev] [PATCH v2] " Christian Ehrhardt
2016-07-05 16:47 ` Ferruh Yigit
2016-07-05 19:47 ` Thomas Monjalon
2016-07-06 5:37 ` Christian Ehrhardt
2016-07-06 5:37 ` [dpdk-dev] [PATCH v3] " Christian Ehrhardt
2016-07-06 8:06 ` Ferruh Yigit
2016-07-06 8:12 ` Bruce Richardson
2016-07-06 8:57 ` Ferruh Yigit
2016-07-06 9:08 ` Christian Ehrhardt
2016-07-06 9:13 ` [dpdk-dev] [PATCH v4] " Christian Ehrhardt
2016-07-11 12:47 ` Thomas Monjalon
2016-07-06 9:30 ` [dpdk-dev] [PATCH v3] " Bruce Richardson
2016-06-13 16:55 ` [dpdk-dev] Duplicate config symbols Thomas Monjalon
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