#!/usr/bin/make -f

IGNORE_DIRS          = .svn BitKeeper CVS SCCS .hg .git

EXISTING_IGNORE_DIRS = $(wildcard ${IGNORE_DIRS})

FIND_FILTER          = $(shell for d in ${EXISTING_IGNORE_DIRS} ; do echo ! -path "\"*/$$d/*\"" -a ; done)

.PHONY: all cscope cscope.files cscope.out tags
all: cscope tags

cscope: cscope.out

cscope.out: cscope.files
	cscope -b

tags: cscope.files
	@rm -f tags
	xargs -n50 ctags -a < cscope.files

cscope.files:
	find . ${FIND_FILTER} -name '*.[ch]' > cscope.files