# Copyright 2015 Luke Shumaker <lukeshu@sbcglobal.net>.
#
# This 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.
#
# The GNU General Public License's references to "object code" and
# "executables" are to be interpreted to also include the output of
# any document formatting or typesetting system, including
# intermediate and printed output.
#
# This software 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 manual; if not, see
# <http://www.gnu.org/licenses/>.

prefix=/usr
bindir=$(libexecdir)/$(PACKAGE)
libexecdir=$(libdir)
sysconfdir=/etc

PACKAGE = parabola-hackers
sysusersdir=$(prefix)/lib/sysusers.d
systemunitdir=$(prefix)/lib/systemd/system
conf_file = $(sysconfdir)/$(PACKAGE).yml
NET ?=
#NET ?= FORCE
user = nshd
CFLAGS += -Wall -Wextra -Werror -pedantic
CC = gcc -std=c99

MAKEFLAGS += --no-builtin-rules
topsrcdir := $(patsubst %/,%,$(dir $(lastword $(MAKEFILE_LIST))))
topoutdir := $(topsrcdir)
include $(topsrcdir)/build-aux/Makefile.head.mk

CGO_CPPFLAGS = $(CPPFLAGS) -U_FORTIFY_SOURCE
CGO_CFLAGS = $(CFLAGS) -O0 -Wno-unused-parameter
CGO_ENABLED = 1

at.subdirs += src/lukeshu.com/git/go/libnslcd.git/proto

scripts = $(filter-out common.rb common.rb.in,$(notdir $(wildcard $(srcdir)/scripts/*))) common.rb

std.gen_files += LICENSE.lgpl-2.1.txt LICENSE.gpl-2.txt LICENSE.apache-2.0.txt
std.out_files += bin/nshd nshd.service nshd.sysusers scripts/common.rb test/runner
std.sys_files += $(addprefix $(bindir)/,nshd $(scripts)) $(systemunitdir)/nshd.socket $(systemunitdir)/nshd.service $(sysusersdir)/nshd.conf $(conf_file)
std.clean_files += test/*.o pkg/ .tmp* .var*

$(srcdir)/LICENSE.lgpl-2.1.txt: $(NET)
	curl https://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt > $@
$(srcdir)/LICENSE.gpl-2.txt: $(NET)
	curl https://www.gnu.org/licenses/old-licenses/gpl-2.0.txt > $@
$(srcdir)/LICENSE.apache-2.0.txt: $(NET)
	curl https://www.apache.org/licenses/LICENSE-2.0 > $@
$(srcdir)/LICENSE.wtfpl-2.txt: $(NET)
	curl http://www.wtfpl.net/txt/copying/ > $@

$(outdir)/bin/nshd: src/lukeshu.com/git/go/libnslcd.git/proto/server/interface_backend.go
$(outdir)/bin/nshd: src/lukeshu.com/git/go/libnslcd.git/proto/server/func_handlerequest.go
$(outdir)/bin/nshd: src/lukeshu.com/git/go/libnslcd.git/proto/server/type_nilbackend.go                                                     
$(outdir)/bin/nshd: src/nshd/main.go
$(outdir)/bin/nshd: $(call golang.src,$(srcdir)) $(var)conf_file $(var)bindir
	$(call golang.install,$(topsrcdir),nshd)

$(outdir)/%.o: $(srcdir)/%.c $(var)CC $(var)CPPFLAGS $(var)CFLAGS
	$(CC) $(CPPFLAGS) $(CFLAGS) -c -o $@ $(filter-out $(var)%,$^)
$(outdir)/%: $(outdir)/%.o $(var)CC $(var)LDFLAGS
	$(CC) $(LDFLAGS) -o $@ $(filter-out $(var)%,$^)

$(outdir)/%: $(srcdir)/%.in
	< $< sed $(foreach v,$(patsubst $(var)%,%,$(filter $(var)%,$^)), -e 's|@$v@|$($v)|g' ) > $@
$(outdir)/nshd.service: $(var)user $(var)bindir
$(outdir)/nshd.sysusers: $(var)user
$(outdir)/scripts/common.rb: $(var)conf_file
$(outdir)/src/nshd/main.go: $(var)conf_file $(var)bindir

$(DESTDIR)$(bindir)/%: $(outdir)/bin/%
	install -TDm755 $< $@
$(DESTDIR)$(bindir)/%: $(srcdir)/scripts/%
	install -TDm755 $< $@
$(DESTDIR)$(bindir)/common.rb: $(srcdir)/scripts/common.rb
	install -TDm644 $< $@
$(DESTDIR)$(systemunitdir)/%.socket: $(outdir)/%.socket
	install -TDm644 $< $@
$(DESTDIR)$(systemunitdir)/%.service: $(outdir)/%.service
	install -TDm644 $< $@
$(DESTDIR)$(sysusersdir)/%.conf: $(outdir)/%.sysusers
	install -TDm644 $< $@
$(DESTDIR)$(conf_file): $(srcdir)/parabola-hackers.yml
	install -TDm644 $< $@

.PHONY: FORCE
.SECONDARY:
.DELETE_ON_ERROR:
include $(topsrcdir)/build-aux/Makefile.tail.mk