#  IDoc makefile
#
#  Author : Manuel M T Chakravarty
#  Created: 24 February 2002
#
#  Version $Revision: 1.2 $ from $Date: 2002/02/28 06:33:03 $
#
#  Copyright (c) 2002 Manuel M T Chakravarty
#
#  This file is free software; you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation; either version 2 of the License, or
#  (at your option) any later version.
#
#  This file is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#  = DOCU =====================================================================
#
#  This makefile is made to work without an extra configuration step to keep 
#  everything as simple as possible for the user.
#
#  The default compiler is GHC, but you can overwrite makefile variables by 
#  providing alternatives values as argument to the invocation of `make'.
#

#  ***************************************
#  !!! This makefile requires GNU make !!!
#  ***************************************

# variables that you may like to overwrite
#
# * HC     : Haskell compiler to be used
# * HCFLAGS: flags passed to the Haskell compiler for compiling and linking
# * PREFIX : subtree into which to install the tool
#
HC      = ghc
HCFLAGS = 
PREFIX  = /usr/local

# compute compiler dependent options
#
SYS = $(notdir $(HC))
ifeq ($(strip $(SYS)),ghc)
  HCFLAGS=-O
endif

# install paths
#
prefix = $(PREFIX)
bindir = $(prefix)/bin

# package name as well as source and object files
#
PACKAGE = idoc
SRCS    = GetOpt.hs IDoc.hs
OBJS    = $(patsubst %.hs,%.o,$(filter %.hs,$(SRCS)))

# file that contains a `versnum = "x.y.z"' line
#
VERSFILE = IDoc.hs

# this is far from elegant, but extracts the plain version number
#
VERSION =$(shell grep '^versnum' $(VERSFILE)\
		 | sed '-e s/versnum.* "//' '-e s/"//')

# define what get dumped into a source distribution
#
MKFILES  = Makefile
NONCODE  = COPYING ChangeLog README
TESTFILES= $(wildcard test/*.hs)
DISTFILES= $(NONCODE) $(MKFILES) $(SRCS) $(TESTFILES)

# default target
#
default: idoc

# compile rules
#
%.o: %.hs
	$(RM) $@
	$(HC) -c $(HCFLAGS) $<
%.hi: %.o
	@:

# link target
#
idoc: $(OBJS)
	$(HC) $(HCFLAGS) -o $@ $^

# install target
#
.PHONY: install
install: idoc
	mkdir -p $(bindir)
	cp idoc $(bindir)/idoc
	-strip $(bindir)/idoc
	chmod a+x $(bindir)/idoc

# admin targets
#
.PHONY: clean cleanhi cleanall tar
clean:
	-$(RM) *.o idoc

cleanhi:
	-$(RM) *.hi

cleanall: clean cleanhi

tar:
	-ln -s . $(PACKAGE)-$(VERSION)
	tar czf $(PACKAGE)-$(VERSION).tar.gz\
	  $(addprefix $(PACKAGE)-$(VERSION)/,$(DISTFILES))
	$(RM) $(PACKAGE)-$(VERSION)

# dependencies
#
IDoc.o  : IDoc.hs GetOpt.hi
GetOpt.o: GetOpt.hs