make(tags): detach from configure

Filelist

@@ -34,6 +34,7 @@ SRC_ALL =	\
 		ci/ddebs.list \
 		ci/pinned-pkgs \
 		src/Make_all.mak \
+		src/Make_tags.mak \
 		src/README.md \
 		src/alloc.c \
 		src/alloc.h \

Makefile

@@ -30,9 +30,12 @@ first:
 	@echo "If there are problems, cd to the src directory and run make there"
 	cd src && $(MAKE) $@
 
+tags:
+	$(MAKE) -C src/ -f Make_tags.mak tags
+
 # Some make programs use the last target for the $@ default; put the other
 # targets separately to always let $@ expand to "first" by default.
-all install uninstall tools config configure reconfig proto depend lint tags types test scripttests testtiny test_libvterm unittests testclean clean distclean:
+all install uninstall tools config configure reconfig proto depend lint types test scripttests testtiny test_libvterm unittests testclean clean distclean:
 	@if test ! -f src/auto/config.mk; then \
 		cp src/config.mk.dist src/auto/config.mk; \
 	fi

src/Make_all.mak

@@ -1,5 +1,5 @@
 #
-# Common Makefile, defines the list of tests to run and other things.
+# Common Makefile - shared platform independent
 #
 
 # Argument for running ctags.

src/Make_tags.mak

@@ -0,0 +1,16 @@
+#
+# tags
+#
+
+include Make_all.mak
+
+ifeq ($(strip $(TAGPRG)),)
+TAGPRG = ctags -I INIT+,INIT2+,INIT3+,INIT4+,INIT5+ --fields=+S -f tags
+endif
+
+notags:
+	-rm -f tags
+
+# You can ignore error messages for missing files.
+tags TAGS: notags
+	$(TAGPRG) $(TAGS_FILES)

src/Makefile

@@ -2201,12 +2201,12 @@ proto/gui_gtk_gresources.pro: auto/gui_gtk_gresources.c
 	fi
 
 notags:
-	-rm -f tags
+	$(MAKE) -f Make_tags.mak notags
 
 # Note: tags is made for the currently configured version.
 # You can ignore error messages for missing files.
-tags TAGS: notags
-	$(TAGPRG) $(TAGS_FILES)
+tags TAGS:
+	$(MAKE) -f Make_tags.mak tags
 
 # Build the cscope database.
 # This may search more files than necessary.