# Copyright (C) 2006-2007 G.P. Halkes
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 3, as
# published by the Free Software Foundation.
#
# This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
.POSIX:
# Inserted settings
CC=cc
LDFLAGS= -L/usr/local/lib

# C-compiler flags
CFLAGS=-fno-common

# Installation prefix
prefix=/usr/local

# Gettext configuration
# GETTEXTFLAGS should contain -DUSE_GETTEXT to enable gettext translations
# GETTEXTLIBS should contain all link flags to allow linking with gettext, if
# it has been enabled. The GNU libc already contains the gettext library, so
# there is no need to add any flags. Otherwise, -lintl is usually required, and
# sometimes -liconv as well.
GETTEXTFLAGS=-DUSE_GETTEXT
GETTEXTLIBS=

# Gettext related
# LOCALEDIR: the directory where the locale dependant files should be installed.
# LINGUAS: translations to be installed. Look in po directory for available
#  translations.
LOCALEDIR=$(prefix)/share/locale
LINGUAS=de nl

# diff program configuration
# DIFF should contain the diff program to be used
# DIFF_FLAGS can contain any of the following flags:
# -DNO_MINUS_A if the diff program does not provide the -a option to treat all
#   files as text files.
# -DNO_MINUS_I if the diff program does not provide the -i option to make diff
#   ignore case in comparisons
DIFF=diff
DIFF_FLAGS=

# Install program to use (should provide -m and -d options)
INSTALL=/usr/bin/install

# Miscelaneous install paths
bindir=$(prefix)/bin
docdir=$(prefix)/share/doc/dwdiff-1.3
mandir=$(prefix)/share/man

all: dwdiff linguas

.PHONY: all clean dist-clean install dwdiff-install lingua-install linguas

CSOURCES=src/buffer.c src/doDiff.c src/dwdiff.c src/option.c src/tempfile.c
OBJECTS=$(CSOURCES:.c=.o)

clean:
	rm -rf src/*.o po/*.mo

dist-clean: clean
	rm -rf dwdiff

.c.o:
	$(CC) $(CFLAGS) $(GETTEXTFLAGS) -DLOCALEDIR=\"$(LOCALEDIR)\" -c -o $@ $<

dwdiff: $(OBJECTS)
	$(CC) $(CFLAGS) $(LDFLAGS) -o dwdiff $(OBJECTS) $(LDLIBS) $(GETTEXTLIBS)

linguas:
	cd po && $(MAKE) "LINGUAS=$(LINGUAS)" linguas

install: dwdiff-install lingua-install

dwdiff-install: dwdiff
	$(INSTALL) -d "$(bindir)"
	$(INSTALL) dwdiff "$(bindir)"
	$(INSTALL) -d "$(mandir)/man1"
	$(INSTALL) -m 644 "man/dwdiff.1" "$(mandir)/man1"
	$(INSTALL) -d "$(docdir)"
	$(INSTALL) -m 644 README COPYING Changelog "$(docdir)"

# Work around empty LINGUAS list. Some shells don't like empty lists in for-loops
lingua-install:
	if [ -n "$(LINGUAS)" ] ; then \
		mandir="$(mandir)" LINGUAS="$(LINGUAS)" INSTALL="$(INSTALL)" ./install-manpages ;\
		cd po && $(MAKE) "LOCALEDIR=$(LOCALEDIR)" "INSTALL=$(INSTALL)" "LINGUAS=$(LINGUAS)" lingua-install ;\
	fi