+
+clean_gtags:
+ @rm -f GPATH GRTAGS GSYMS GTAGS
+
+clean_src:
+ @$(MAKE) -sC src clean
+
+clean_systemtest:
+ @$(MAKE) -sC test/system/casl2 clean
+ @$(MAKE) -sC test/system/comet2 clean
+ @$(MAKE) -sC test/system/dumpword clean
+
+clean_unittest:
+ @$(MAKE) -sC test/unit clean
+
+clean_doc_inner:
+ @rm -rf doc_inner
+
+clean_doc:
+ @$(MAKE) -sC doc clean