# Makefile for GNU DIFF
# Copyright (C) 1988, 1989 Free Software Foundation, Inc.

# This file is part of GNU DIFF.

# GNU DIFF 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 1, or (at your option)
# any later version.
# 
# GNU DIFF 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.
# 
# You should have received a copy of the GNU General Public License
# along with GNU DIFF; see the file COPYING.  If not, write to
# the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.

# You can compile this with ordinary cc as well,
# but gcc makes it faster.
# Also, gcc supports -O and -g together.
CC=gcc -O
CFLAGS =
INSTALL = install

# On system V, enable these three lines:
# CFLAGS = -g -DUSG
# LIBS = -lPW
# INSTALL = cp
# (If you compile with GCC, you don't need to define LIBS.)
# And, depending on the names and contents of your header files,
# add either -DHAVE_NDIR or -DHAVE_DIRECT or both to CFLAGS.
# Add -DHAVE_NDIR to CFLAGS if your system used ndir.h instead of dirent.h
# Add -DHAVE_DIRECT to CFLAGS if your system uses 'struct direct' instead of
# 'struct dirent' (this is the case at least with one add-on ndir library).

# Use these definitions for XENIX:
# There are rumors of bugs in various Xenix's dirent.h and -ldir.  As
# a result, we suggest using HAVE_NDIR and not using -ldir.
# CFLAGS = -O -DUSG -DXENIX -DHAVE_NDIR -DHAVE_DIRECT -DNDIR_IN_SYS
# LIBS = -lx -lPW
# INSTALL = cp

# Some System V machines do not come with libPW.  If this is true, use
# the GNU alloca by switching the comment on the following lines.
ALLOCA = 
# ALLOCA = $(archpfx)/alloca.o

bindir=/usr/contrib/bin
prefix=

# All source files
srcs=diff.c analyze.c io.c context.c ed.c normal.c ifdef.c util.c dir.c \
	version.c diff.h regex.c regex.h limits.h diff3.c \
	getopt.c getopt1.c getopt.h alloca.c
# Object files for diff only.
objs=$(archpfx)diff.o $(archpfx)analyze.o $(archpfx)io.o $(archpfx)context.o \
     $(archpfx)ed.o $(archpfx)normal.o $(archpfx)util.o $(archpfx)dir.o \
     $(archpfx)regex.o $(archpfx)ifdef.o $(archpfx)version.o \
     $(archpfx)getopt.o $(archpfx)getopt1.o
tapefiles = $(srcs) README diagmeet.note Makefile COPYING ChangeLog

all: $(archpfx)diff $(archpfx)diff3

$(archpfx)diff3: $(archpfx)diff3.o
	$(CC) -o $(archpfx)diff3 $(CFLAGS) $(LDFLAGS) $(archpfx)diff3.o $(LIBS)

$(archpfx)diff: $(objs)
	$(CC) -o $(archpfx)diff $(CFLAGS) $(LDFLAGS) $(objs) $(LIBS)

$(objs): diff.h

$(archpfx)context.o $(archpfx)diff.o: regex.h

$(archpfx)diff3.o: diff3.c
	$(CC) -c $(CFLAGS) -DDIFF_PROGRAM=\"$(bindir)/diff\" diff3.c \
 $(OUTPUT_OPTION)

clean:
	rm -f *.o $(archpfx)diff $(archpfx)diff3 diff.tar diff.tar.Z

install: install-diff install-diff3

install-diff: $(prefix)$(bindir)/diff

$(prefix)$(bindir)/diff: $(archpfx)diff
	$(INSTALL) $(archpfx)diff $(prefix)$(bindir)/diff

install-diff3: $(prefix)$(bindir)/diff3

$(prefix)$(bindir)/diff3: $(archpfx)diff3
	$(INSTALL) $(archpfx)diff3 $(prefix)$(bindir)/diff3

diff.tar: $(tapefiles)
	mkdir tmp
	mkdir tmp/diff
	-ln $(tapefiles) tmp/diff
	for file in $(tapefiles); do \
		if [ ! -r tmp/diff/$$file ]; then cp $$file tmp/diff; fi \
	done
	cd tmp; tar cf ../diff.tar diff
	rm -rf tmp

diff.tar.Z: diff.tar
	compress < diff.tar > diff.tar.Z