support etags

add TAGS target to Makefile to support etags.

Signed-off-by: Yang Bai <hamo.by@gmail.com>

.gitignore

@@ -7,3 +7,5 @@ java/lib/
 libunwind.a
 
 .gradle
+
+TAGS
\ No newline at end of file

Makefile

@@ -32,7 +32,6 @@ qcow2: all
 clean:
 	$(call quiet, rm -rf build/$(mode), CLEAN)
 	$(call quiet, cd mgmt && ./gradlew clean >> /dev/null , GRADLE CLEAN)
-	
 
 external:
 	cd external/libunwind && autoreconf -i
@@ -44,6 +43,11 @@ external:
 tags:
 	find . -name "*.cc" -o -name "*.hh" -o -name "*.h" -o -name "*.c" | ctags -L -
 
+TAGS:
+	rm -f TAGS
+	find . -name "*.cc" -o -name "*.hh" -o -name "*.h" -o -name "*.c" -exec etags -a {} \;
+
 .PHONY: external
 .PHONY: tags
+.PHONY: TAGS
 .DELETE_ON_ERROR: