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# guile-email --- Guile email parser
# Copyright © 2023 Arun Isaac <arunisaac@systemreboot.net>
#
# This file is part of guile-email.
#
# guile-email is free software; you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation; either version 3 of the
# License, or (at your option) any later version.
#
# guile-email 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
# Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public
# License along with guile-email.  If not, see
# <http://www.gnu.org/licenses/>.

project = guile-email
version = $(subst v,,$(shell git describe --abbrev=0))
# FIXME: Do not hardcode the effective version.
guile_effective_version = 3.0

EMACS ?= emacs
GIT ?= git
GPG ?= gpg
GUILD ?= guild
GUILE ?= guile
LZIP ?= lzip
MAKEINFO ?= makeinfo

prefix ?= /usr/local
exec_prefix ?= $(prefix)
libdir ?= $(exec_prefix)/lib
datarootdir ?= $(prefix)/share
infodir ?= $(datarootdir)/info

top_level_module_dir = email
sources = $(wildcard $(top_level_module_dir)/*.scm)
objects = $(sources:.scm=.go)
tests = $(wildcard tests/*.scm)
doc_texi = doc/$(project).texi
doc_html = $(doc_texi:.texi=.html)
doc_info = $(doc_texi:.texi=.info)
distribute_files = $(sources) tests $(doc_texi) \
		   build-aux/test-driver.scm \
		   COPYING NEWS README.org \
		   guix.scm Makefile

scmdir = $(datarootdir)/guile/site/$(guile_effective_version)
godir = $(libdir)/guile/$(guile_effective_version)/site-ccache

.PHONY: all check install clean dist

all: $(objects)

%.go: %.scm
	GUILE_AUTO_COMPILE=0 $(GUILD) compile -L . -o $@ $<

$(doc_html): $(doc_texi)
	$(MAKEINFO) --html --output=$@ --css-ref=/style.css $<

$(doc_info): $(doc_texi)
	$(MAKEINFO) --output=$@ $<

website: website/index.html website/manual/dev/en

website/index.html: README.org
	mkdir -p $(dir $@)
	$(EMACS) -Q --script build-aux/build-website.el

website/manual/dev/en: $(doc_html)
	rm -rf $@
	mkdir -p $(dir $@)
	cp -vr $< $@

check: $(tests)
	$(GUILE) --no-auto-compile -L . build-aux/test-driver.scm $^

dist_archive = $(project)-$(version).tar.lz

dist: $(dist_archive) $(dist_archive).asc

$(dist_archive): .git/refs/heads/master
	$(GIT) archive --prefix $(basename $(basename $@))/ --format=tar master $(distribute_files) \
		| $(LZIP) --force --output $@

%.asc: %
	$(GPG) --detach-sign --armor $<

install: $(doc_info)
	mkdir -p $(scmdir) $(godir)
	cp --parents -vr $(sources) $(scmdir)
	cp --parents -vr $(objects) $(godir)
	install -D $(doc_info) --target-directory $(infodir)

clean:
	rm -rf $(objects) $(doc_html) $(doc_info) website/index.tml website/manual/dev/en