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##
##  gcsd
##
##  gcsd the generic command sequencer daemon can be used to serialize 
##  commands sent over various paralell communication channels to a
##  single command output. It can be seen as a multiplexer for any
##  kind of communication between a single resource and various clients
##  which want to submit commands to it or query information from it.
##  gcsd is written in C and Lua. The goal is to provide an easy to 
##  understand high level API based on Lua which can be used to
##  implement the business logic of the so formed multiplexer daemon.
##  
##
##  Copyright (C) 2009-2010 Markus Grueneis <gimpf@spreadspace.org>
##                          Christian Pointner <equinox@spreadspace.org>
##
##  This file is part of gcsd.
##
##  gcsd 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 3 of the License, or
##  any later version.
##
##  gcsd 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 gcsd. If not, see <http://www.gnu.org/licenses/>.
##

ifneq ($(MAKECMDGOALS),distclean)
include include.mk
endif

EXECUTABLE := gcsd

#       sysexec.o \

C_OBJS := log.o \
          l_log.o \
          options.o \
          string_list.o \
          sig_handler.o \
          l_sig_handler.o \
          l_rawio.o \
          l_tcp.o \
          l_util.o \
          l_timer.o \
          gcsd.o

C_SRCS := $(C_OBJS:%.o=%.c)

#MODULES := dummy debug_shell
#MODULE_SRC := $(MODULES:%=modules/%.lua)

LUA_SRCS := client_list.lua \
            module_list.lua \
            command_queue.lua \
            command_table.lua \
            response_table.lua \
            dispatch_tables.lua \
            main_loop.lua

LUA_BYTECODE := $(EXECUTABLE).lc
LUA_BYTECODE_OBJ := $(EXECUTABLE)_lua_bytecode.o

.PHONY: cleanlua clean cleanall distclean manpage install install-bin install-etc install-man uninstall remove purge

all: $(EXECUTABLE)

%.d: %.c
	@set -e; rm -f $@; \
  $(CC) -MM $(CFLAGS) $< > $@.$$$$; \
  sed 's,\($*\)\.o[ :]*,\1.o $@ : ,g' < $@.$$$$ > $@; \
  rm -f $@.$$$$; echo '(re)building $@'

ifneq ($(MAKECMDGOALS),distclean)
-include $(C_SRCS:%.c=%.d)
endif

$(EXECUTABLE): $(C_OBJS) $(LUA_BYTECODE_OBJ)
	$(CC) $(C_OBJS) $(LUA_BYTECODE_OBJ) -o $@ $(LDFLAGS)

%.o: %.c
	$(CC) $(CFLAGS) -c $<

$(LUA_BYTECODE): $(LUA_SRCS)
	$(LUAC) -o $@ $(LUA_SRCS)

$(LUA_BYTECODE_OBJ): $(LUA_BYTECODE)
	$(LUA) ../tools/bin2c.lua $(LUA_BYTECODE) $(@:%.o=%) > $(@:%.o=%.c)
	$(CC) $(@:%.o=%.c) -c -o $@

strip: $(EXECUTABLE) $(LUA_BYTECODE)
	$(LUAC) -s -o $(LUA_BYTECODE) $(LUA_BYTECODE)
	$(MAKE)
	$(STRIP) -s $(EXECUTABLE)


distclean: cleanall
	find . -name *.o -exec rm -f {} \;
	find . -name "*.\~*" -exec rm -rf {} \;
	rm -f include.mk
	rm -f config.h

cleanlua:
	rm -f $(LUA_BYTECODE)
	rm -f $(LUA_BYTECODE_OBJ)
	rm -f $(LUA_BYTECODE_OBJ:%.o=%.c)

clean: cleanlua
	rm -f *.o
	rm -f *.d
	rm -f *.d.*
	rm -f $(EXECUTABLE)
	rm -f $(EXECUTABLE).exe

cleanall: clean
	$(MAKE) --directory="../doc/" clean

manpage:
	$(MAKE) --directory="../doc/" manpage


INSTALL_TARGETS := install-bin install-etc
REMOVE_TARGETS := remove-bin remove-etc

ifdef MANDIR
INSTALL_TARGETS += install-man
REMOVE_TARGETS += remove-man
endif

ifdef EXAMPLESDIR
INSTALL_TARGETS += install-examples
REMOVE_TARGETS += remove-examples
endif

install: all $(INSTALL_TARGETS)

install-bin: $(EXECUTABLE)
	$(INSTALL) -d $(DESTDIR)$(BINDIR)
	$(INSTALL) -m 755 $(EXECUTABLE) $(DESTDIR)$(BINDIR)

install-etc:
	$(INSTALL) -d $(DESTDIR)$(ETCDIR)/$(EXECUTABLE)
	@ echo "example configurations can be found at $(EXAMPLESDIR)/$(EXECUTABLE)" > $(DESTDIR)$(ETCDIR)/$(EXECUTABLE)/README

install-examples:
	$(INSTALL) -d $(DESTDIR)$(EXAMPLESDIR)/$(EXECUTABLE)

install-man: manpage
	$(INSTALL) -d $(DESTDIR)$(MANDIR)/man8/
	$(INSTALL) -m 644 ../doc/gcsd.8 $(DESTDIR)$(MANDIR)/man8/$(EXECUTABLE).8

uninstall: remove

remove: $(REMOVE_TARGETS)

remove-bin:
	rm -f $(DESTDIR)$(BINDIR)/$(EXECUTABLE)

remove-etc:
	rm -f $(DESTDIR)$(ETCDIR)/init.d/$(EXECUTABLE)

remove-examples:
	rm -rf $(DESTDIR)$(EXAMPLESDIR)/$(EXECUTABLE)/

remove-man:
	rm -f $(DESTDIR)$(MANDIR)/man8/$(EXECUTABLE).8

purge: remove
	rm -rf $(DESTDIR)$(ETCDIR)/$(EXECUTABLE)/