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From: Viresh Kumar <viresh.kumar@linaro.org>
To: Masahiro Yamada <masahiroy@kernel.org>
Cc: Frank Rowand <frowand.list@gmail.com>,
	Rob Herring <robh+dt@kernel.org>,
	Pantelis Antoniou <pantelis.antoniou@konsulko.com>,
	Michal Marek <michal.lkml@markovi.net>,
	Vincent Guittot <vincent.guittot@linaro.org>,
	DTML <devicetree@vger.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	David Gibson <david@gibson.dropbear.id.au>,
	Bill Mills <bill.mills@linaro.org>,
	Anmar Oueja <anmar.oueja@linaro.org>,
	Linux Kbuild mailing list <linux-kbuild@vger.kernel.org>
Subject: Re: [PATCH V5 4/5] kbuild: Add support to build overlays (%.dtbo)
Date: Wed, 20 Jan 2021 15:25:41 +0530	[thread overview]
Message-ID: <20210120095541.f354ml4h36rfc4gx@vireshk-i7> (raw)
In-Reply-To: <CAK7LNATPSBrmSC_if+6sK0pwi1ksBZ7RXK1mndj1AGCX3gkj+g@mail.gmail.com>

On 20-01-21, 17:58, Masahiro Yamada wrote:
> > +%.dtb %.dtbo: include/config/kernel.release scripts_dtc
> >         $(Q)$(MAKE) $(build)=$(dtstree) $(dtstree)/$@
> 
> 
> No, this is wrong because it does not work
> as grouped targets.
> 
> You need to separate them.
> 
> 
> 
> %.dtb: include/config/kernel.release scripts_dtc
>          $(Q)$(MAKE) $(build)=$(dtstree) $(dtstree)/$@
> 
> %.dtbo: include/config/kernel.release scripts_dtc
>          $(Q)$(MAKE) $(build)=$(dtstree) $(dtstree)/$@
> 
> 
> 
> 
> See GNU make manual.
> 
> 
> "Pattern rules may have more than one target; however, every target
> must contain a % character.
> Pattern rules are always treated as grouped targets"
> 
> https://www.gnu.org/software/make/manual/html_node/Pattern-Intro.html

Hmm, okay I will do that.

I did it this way because I saw similar stuff at some other places. I
am not a regular Makefile hacker, there is every chance I am reading
it wrong.

$ git grep "%.*%.*:" | grep Makefile
Makefile:%/config/auto.conf %/config/auto.conf.cmd %/generated/autoconf.h: $(KCONFIG_CONFIG)
scripts/Makefile.build:$(obj)/%.asn1.c $(obj)/%.asn1.h: $(src)/%.asn1 $(objtree)/scripts/asn1_compiler
scripts/Makefile.host:$(obj)/%.tab.c $(obj)/%.tab.h: $(src)/%.y FORCE
scripts/genksyms/Makefile:$(obj)/pars%.tab.c $(obj)/pars%.tab.h: $(src)/pars%.y FORCE
tools/perf/Documentation/Makefile:$(OUTPUT)%.1 $(OUTPUT)%.5 $(OUTPUT)%.7 : %.txt
tools/perf/Documentation/Makefile:$(OUTPUT)%.1 $(OUTPUT)%.5 $(OUTPUT)%.7 : $(OUTPUT)%.xml

-- 
viresh

  reply	other threads:[~2021-01-20 11:02 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-20  7:06 [PATCH V5 0/5] dt: build overlays Viresh Kumar
2021-01-20  7:06 ` [PATCH V5 1/5] scripts: dtc: Fetch fdtoverlay.c from external DTC project Viresh Kumar
2021-01-20  7:06 ` [PATCH V5 2/5] scripts: dtc: Build fdtoverlay tool Viresh Kumar
2021-01-20  7:06 ` [PATCH V5 3/5] scripts: dtc: Remove the unused fdtdump.c file Viresh Kumar
2021-01-21  0:44   ` David Gibson
2021-01-21  4:17     ` Viresh Kumar
2021-01-21  6:26       ` David Gibson
2021-01-21 14:18         ` Rob Herring
2021-01-20  7:06 ` [PATCH V5 4/5] kbuild: Add support to build overlays (%.dtbo) Viresh Kumar
2021-01-20  8:58   ` Masahiro Yamada
2021-01-20  9:55     ` Viresh Kumar [this message]
2021-01-20 11:04       ` Masahiro Yamada
2021-01-20 11:27         ` Viresh Kumar
2021-01-21  0:49   ` David Gibson
2021-01-21  4:13     ` Viresh Kumar
2021-01-21  5:40       ` Frank Rowand
2021-01-21  6:25       ` David Gibson
2021-01-20  7:06 ` [PATCH V5 5/5] of: unittest: Statically apply overlays using fdtoverlay Viresh Kumar
2021-01-21  0:51   ` David Gibson
2021-01-21  5:14     ` Frank Rowand
2021-01-21  5:34       ` Viresh Kumar
2021-01-21  5:45         ` Frank Rowand
2021-01-21  5:50           ` Viresh Kumar
2021-01-21  6:36             ` David Gibson
2021-01-21  6:34         ` David Gibson
2021-01-21  6:57           ` Viresh Kumar
2021-01-21 23:39             ` David Gibson
2021-01-22  3:10               ` Viresh Kumar
2021-01-22  4:27                 ` David Gibson
2021-01-21  5:34       ` Frank Rowand
2021-01-21  5:43         ` Viresh Kumar
2021-01-21  5:55           ` Frank Rowand
2021-01-21  5:58             ` Viresh Kumar
2021-01-21  7:04               ` Frank Rowand
2021-01-21 23:41                 ` David Gibson
2021-01-21  6:37             ` David Gibson
2021-01-20 15:43 ` [PATCH V5 0/5] dt: build overlays Rob Herring
2021-01-21  4:14   ` Viresh Kumar

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