linux-kernel - [PATCH] kbuild: add GNU GLOBAL tags generation

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Message-ID: <AANLkTinVE6PaRKLUwHHMfY=QRfP9zcM0FF6XVdeG_LGi@mail.gmail.com>
Date:	Fri, 14 Jan 2011 20:07:05 +0800
From:	Jianbin Kang <kjbmail@...il.com>
To:	Michal Marek <mmarek@...e.cz>
Cc:	linux-kernel@...r.kernel.org, linux-kbuild@...r.kernel.org
Subject: [PATCH] kbuild: add GNU GLOBAL tags generation

GNU GLOBAL (http://www.gnu.org/software/global/) is a source code tagging system
It is really cheap to support it in kbuild system.

Signed-off-by: Jianbin Kang <kjbmail@...il.com>
---
diff --git a/Makefile b/Makefile
index 74b2555..127a371 100644
--- a/Makefile
+++ b/Makefile
@@ -420,7 +420,7 @@ endif
 # of make so .config is not included in this case either (for *config).

 no-dot-config-targets := clean mrproper distclean \
-			 cscope TAGS tags help %docs check% coccicheck \
+			 cscope gtags TAGS tags help %docs check% coccicheck \
 			 include/linux/version.h headers_% \
 			 kernelversion %src-pkg

@@ -1134,7 +1134,7 @@ CLEAN_FILES +=	vmlinux System.map \
 MRPROPER_DIRS  += include/config usr/include include/generated
 MRPROPER_FILES += .config .config.old .version .old_version             \
                   include/linux/version.h                               \
-		  Module.symvers tags TAGS cscope*
+		  Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS

 # clean - Delete most, but leave enough to build external modules
 #
@@ -1221,6 +1221,7 @@ help:
 	@echo  '  modules_prepare - Set up for building external modules'
 	@echo  '  tags/TAGS	  - Generate tags file for editors'
 	@echo  '  cscope	  - Generate cscope index'
+	@echo  '  gtags           - Generate GNU GLOBAL index'
 	@echo  '  kernelrelease	  - Output the release version string'
 	@echo  '  kernelversion	  - Output the version stored in Makefile'
 	@echo  '  headers_install - Install sanitised kernel headers to
INSTALL_HDR_PATH'; \
@@ -1379,7 +1380,7 @@ clean: $(clean-dirs)
 quiet_cmd_tags = GEN     $@
       cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@

-tags TAGS cscope: FORCE
+tags TAGS cscope gtags: FORCE
 	$(call cmd,tags)

 # Scripts to check various things for consistency
diff --git a/scripts/tags.sh b/scripts/tags.sh
index bbbe584..0a64ea4 100755
--- a/scripts/tags.sh
+++ b/scripts/tags.sh
@@ -114,6 +114,11 @@ docscope()
 	cscope -b -f cscope.out
 }

+dogtags()
+{
+	all_sources | gtags -f -
+}
+
 exuberant()
 {
 	all_sources | xargs $1 -a                               \
@@ -187,6 +192,10 @@ case "$1" in
 		docscope
 		;;

+	"gtags")
+		dogtags
+		;;
+
 	"tags")
 		rm -f tags
 		xtags ctags
--
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