Makefile: Ensure cscope.out/tags/TAGS are generated in the source tree

Tools usually expect the index files to be in the source tree, eg. emacs.
This is already the case when doing out-of-tree builds, but with in-tree
builds they end up in the build directory.

Force cscope, ctags and etags to put them in the source tree.

Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <160277334665.1754102.10921580280105870386.stgit@bahia.lan>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Makefile

@@ -194,19 +194,19 @@ find-src-path = find "$(SRC_PATH)/" -path "$(SRC_PATH)/meson" -prune -o -name "*
 
 .PHONY: ctags
 ctags:
-	rm -f tags
-	$(find-src-path) -exec ctags --append {} +
+	rm -f "$(SRC_PATH)/"tags
+	$(find-src-path) -exec ctags -f "$(SRC_PATH)/"tags --append {} +
 
 .PHONY: TAGS
 TAGS:
-	rm -f TAGS
-	$(find-src-path) -exec etags --append {} +
+	rm -f "$(SRC_PATH)/"TAGS
+	$(find-src-path) -exec etags -f "$(SRC_PATH)/"TAGS --append {} +
 
 .PHONY: cscope
 cscope:
 	rm -f "$(SRC_PATH)"/cscope.*
 	$(find-src-path) -print | sed -e 's,^\./,,' > "$(SRC_PATH)/cscope.files"
-	cscope -b -i"$(SRC_PATH)/cscope.files"
+	cscope -b -i"$(SRC_PATH)/cscope.files" -f"$(SRC_PATH)"/cscope.out
 
 # Needed by "meson install"
 export DESTDIR