Makefile patch for cscope and saner Ctags

[Mark Frazer]

The following patch generates saner Ctags and will build cscope
output.  It's against 2.4.5

--- Makefile.old	Mon May 28 22:44:01 2001
+++ Makefile	Wed May 30 17:50:01 2001
@@ -334,11 +334,32 @@
 
 # Exuberant ctags works better with -I
 tags: dummy
-	CTAGSF=`ctags --version | grep -i exuberant >/dev/null && echo "-I __initdata,__exitdata,EXPORT_SYMBOL,EXPORT_SYMBOL_NOVERS"`; \
+	CTAGSF=`ctags --version | grep -i exuberant >/dev/null && echo "--sort=no -I __initdata,__exitdata,EXPORT_SYMBOL,EXPORT_SYMBOL_NOVERS"`; \
 	ctags $$CTAGSF `find include/asm-$(ARCH) -name '*.h'` && \
-	find include -type d \( -name "asm-*" -o -name config \) -prune -o -name '*.h' -print | xargs ctags $$CTAGSF -a && \
+	find include -type f -name '*.h' -mindepth 2 -maxdepth 2 \
+	    | grep -v include/asm- | grep -v include/config \
+	    | xargs -r ctags $$CTAGSF -a && \
+	find include -type f -name '*.h' -mindepth 3 -maxdepth 3 \
+	    | grep -v include/asm- | grep -v include/config \
+	    | xargs -r ctags $$CTAGSF -a && \
+	find include -type f -name '*.h' -mindepth 4 -maxdepth 4 \
+	    | grep -v include/asm- | grep -v include/config \
+	    | xargs -r ctags $$CTAGSF -a && \
+	find include -type f -name '*.h' -mindepth 5 -maxdepth 5 \
+	    | grep -v include/asm- | grep -v include/config \
+	    | xargs -r ctags $$CTAGSF -a && \
 	find $(SUBDIRS) init -name '*.c' | xargs ctags $$CTAGSF -a
+	mv tags tags.unsorted
+	LC_ALL=C sort -k 1,1 -s tags.unsorted > tags
+	rm tags.unsorted
 
+cscope: dummy
+	find include/asm-$(ARCH) -name '*.h' >cscope.files
+	find include $(SUBDIRS) init -type f -name '*.[ch]' \
+	    | grep -v include/asm- | grep -v include/config >> cscope.files
+	cscope -b -I include
+
+	
 ifdef CONFIG_MODULES
 ifdef CONFIG_MODVERSIONS
 MODFLAGS += -DMODVERSIONS -include $(HPATH)/linux/modversions.h