Hi all,

In the process of hacking on Kaffe, I've been trying to get lots of
the tools (well, hacks) I'm used to working with it.  Here's another
one.

Attached is a makefile I took from one of our internal projects that
generates an TAGS file (in emacs-friendly format) and/or a glimpse
index of a source tree.  Its fairly generic, and can be used for other
projects, with only minor changes.

It creates a TAGS file if given the 'tags' target.  If given the
'glimpse' target it will create a script (kglimpse) that uses a
glimpse generated index of the source to find all matches
(e.g. "kglimpse lookupClass" will return a list of all files that
contain the string lookupClass.)  Glimpse has lots of options (like
looking for spelling variations, or only in certain files, etc.)  See
http://donkey.cs.arizona.edu/index.html for more info on glimpse.

-Pat

##
## usage:
##	cd <top-level directory>
##	make -f <this file>
##
## the glimpse target will create a script called kglimpse
## which is like a really fast dir-tree grep.  For more info
## on glimpse, see http://donkey.cs.arizona.edu/index.html.
##
## the tags/TAGS target will make an emacs TAGS file.
##
## Hacked by Pat Tullmann from a Makefile originally written
## by Bart Robinson.  Send comments and bug fixes to
## Pat Tullmann <tullmann@cs.utah.edu>.
##

# Directories to search and include in glimpse and TAGS
dirs = .
# Name of glimpse script to create
out = kglimpse

## Some programs that might be site specific
ETAGS= etags -a

GLIMPSEINDEX= glimpseindex
GINDEXOPTS=-B -M 4 -H .

GLIMPSE= glimpse
GOPTS=-ynH 

default:
	@echo "Make 'tags' or 'glimpse'"

## ---

TAGS: tags

## Note that the grep -v drops out all the config files to avoid multiple
## defines.  The correct file will be included (probably) via dynamic links (?)
tags:
	rm -f TAGS
	find $(dirs)        \
		-name '.*'  \
		-o -name '*.[ch]' -print | grep -v "^./config" | xargs $(ETAGS)

## ---

.PHONY: index $(out)

glimpse: index $(out)

index:
	$(GLIMPSEINDEX) $(GINDEXOPTS) $(dirs)
	chmod 664 .gl*

$(out):
	@echo  >$(out) "#!/bin/sh"
	@echo >>$(out) "dir=`pwd`"
	@echo >>$(out) 'if [ "x$$1" = x-Z ]; then'
	@echo >>$(out) '	filter=cat'
	@echo >>$(out) '	shift'
	@echo >>$(out) 'else'
	@echo >>$(out) '	# Quote "+" and "." regexp magic chars.'
	@echo >>$(out) '	xdir=`echo $$dir | perl -pe "s,([+.]),\"\134$$1\",ge"`'
	@echo >>$(out) '	filter="sed s,^$$xdir/,,"'
	@echo >>$(out) 'fi'
	@echo >>$(out) '$(GLIMPSE) $(GOPTS) $$dir "$$@" | $$filter'
	@chmod +x $(out)
	@echo "created \"$(out)\""