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From:   Masahiro Yamada <yamada.masahiro@socionext.com>
To:     linux-kbuild@vger.kernel.org
Cc:     Sam Ravnborg <sam@ravnborg.org>,
        Michal Marek <michal.lkml@markovi.net>,
        linux-kernel@vger.kernel.org, Arnd Bergmann <arnd@arndb.de>,
        Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
        Frank Rowand <frank.rowand@sony.com>,
        Geert Uytterhoeven <geert@linux-m68k.org>,
        Masahiro Yamada <yamada.masahiro@socionext.com>
Subject: [PATCH 09/10] kbuild: add *.asn1.[ch] to 'targets' automatically
Date:   Fri, 23 Mar 2018 22:04:38 +0900
Message-Id: <1521810279-6282-9-git-send-email-yamada.masahiro@socionext.com>
In-Reply-To: <1521810279-6282-1-git-send-email-yamada.masahiro@socionext.com>
References: <1521810279-6282-1-git-send-email-yamada.masahiro@socionext.com>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

Use $(call if_changed,...) instead of $(call cmd,...) in case the
build command is changed in the future.  Add intermediate files to
'targets' automatically to include *.cmd files.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
---

 scripts/Makefile.build | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index 8c3ca61..cc081af 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -432,8 +432,9 @@ quiet_cmd_asn1_compiler = ASN.1   $@
 
 .PRECIOUS: $(objtree)/$(obj)/%.asn1.c $(objtree)/$(obj)/%.asn1.h
 
-$(obj)/%.asn1.c $(obj)/%.asn1.h: $(src)/%.asn1 $(objtree)/scripts/asn1_compiler
-	$(call cmd,asn1_compiler)
+$(obj)/%.asn1.c $(obj)/%.asn1.h: $(src)/%.asn1 \
+					$(objtree)/scripts/asn1_compiler FORCE
+	$(call if_changed,asn1_compiler)
 
 # Build the compiled-in targets
 # ---------------------------------------------------------------------------
@@ -544,10 +545,12 @@ targets := $(filter-out $(PHONY), $(targets))
 intermediate_targets = $(foreach sfx, $(2), \
 				$(patsubst %$(strip $(1)),%$(sfx), \
 					$(filter %$(strip $(1)), $(targets))))
+# %.asn1.o <- %.asn1.[ch] <- %.asn1
 # %.dtb.o <- %.dtb.S <- %.dtb <- %.dts
 # %.lex.o <- %.lex.c <- %.l
 # %.tab.o <- %.tab.[ch] <- %.y
-targets += $(call intermediate_targets, .dtb.o, .dtb.S .dtb) \
+targets += $(call intermediate_targets, .asn1.o, .asn1.c .asn1.h) \
+	   $(call intermediate_targets, .dtb.o, .dtb.S .dtb) \
 	   $(call intermediate_targets, .lex.o, .lex.c) \
 	   $(call intermediate_targets, .tab.o, .tab.c .tab.h)
 
-- 
2.7.4