CTags

.dir-locals.el

@@ -8,6 +8,7 @@
   (eval . (setq-local company-clang-arguments
                       (list (concat "-I" (expand-file-name "libwebsockets/include" (projectile-project-root)))
                             (concat "-I" (expand-file-name "json-c" (projectile-project-root))))))
+  (eval . (setq-local tags-table-list (expand-file-name ".git/tags" (projectile-project-root))))
   (flycheck-clang-warnings . ("all" "extra" "error-implicit-function-declaration" "no-missing-field-initializers"))
   (flycheck-clang-language-standard . "gnu99")
   (flycheck-checker . c/c++-clang)

Makefile

@@ -66,7 +66,7 @@ install: slack.so
 .PHONY: tags cs
 
 tags:
-	ctags -f .git/tags -R *.c *.h
+	$(CC) $(CFLAGS) -M $(SRCS) | sed -e "s/[\\ ]/\n/g" | sed -e "/^$$/d" -e "/\.o:[ \t]*$$/d" | sort | uniq | ctags -e -L - -f .git/tags -R --c-kinds=+px --c++-kinds=+px --fields=+iaS --extra=+fq
 
 cs:
 	cscope -RUbq