Markus Armbruster
7e2008e7f4
Why upgrade? I'm not a lawyer, but here's my take on the differences to version 2: * Software patents: better protection against abuse of patents to prevent users from exercising the rights under the GPL. I doubt we'll get hit with a patent suit, but it's a good move just on general principles. * License compatibility: compatible with more free licenses, i.e. can "steal" more free software for use in Empire. I don't expect to steal much, but it's nice to have the option. * Definition of "source code": modernization of some details for today's networked world, to make it easier to distribute the software. Not really relevant to us now, as we normally distribute full source code. * Tivoization: this is about putting GPL-licensed software in hardware, then make the hardware refuse to run modified software. "Neat" trick to effectively deny its users their rights under the GPL. Abuse was "pioneered" by TiVo (popular digital video recorders). GPLv3 forbids it. Unlikely to become a problem for us. * Internationalization: more careful wording, to harden the license outside the US. The lawyers tell us it better be done that way. * License violations: friendlier way to deal with license violations. This has come out of past experience enforcing the GPL. * Additional permissions: Probably not relevant to us. Also include myself in the list of principal authors.
405 lines
13 KiB
Makefile
405 lines
13 KiB
Makefile
#
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# Empire - A multi-player, client/server Internet based war game.
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# Copyright (C) 1986-2011, Dave Pare, Jeff Bailey, Thomas Ruschak,
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# Ken Stevens, Steve McClure, Markus Armbruster
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#
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# Empire is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# ---
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#
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# See files README, COPYING and CREDITS in the root of the source
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# tree for related information and legal notices. It is expected
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# that future projects/authors will amend these files as needed.
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#
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# ---
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#
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# Make.mk: The real Makefile, included by GNUmakefile
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#
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# Known contributors to this file:
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# Markus Armbruster, 2005-2009
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#
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# This makefile was inspired by `Recursive Make Considered Harmful',
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# Peter Miller, 1997.
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# http://miller.emu.id.au/pmiller/books/rmch/
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# Recursively expanded variables are occasionally useful, but can be
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# slow and tricky. Do not use them gratuitously. If you don't
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# understand this, always use `:=' rather than `='.
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# Default goal
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all:
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# Delete target on error. Every Makefile should have this.
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.DELETE_ON_ERROR:
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# Source files
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ifeq ($(revctrl),git)
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src := $(shell cd $(srcdir) && git ls-files)
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else
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include $(srcdir)/sources.mk
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endif
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dirs := $(sort $(dir $(src)))
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csrc := $(filter %.c, $(src))
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tsrc := $(filter %.t, $(src))
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man6 := $(filter man/%.6, $(src))
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builtins := $(filter src/lib/global/%.config, $(src))
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# Info subjects (automatically generated)
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-include subjects.mk
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# Abbreviations
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topics := $(patsubst %.t,%,$(notdir $(tsrc)))
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info := $(topics) $(subjects) all TOP
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subjects.html := $(addprefix info.html/, $(addsuffix .html, $(subjects)))
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topics.html := $(addprefix info.html/, $(addsuffix .html, $(topics)))
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scripts := $(srcdir)/src/scripts
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depcomp := $(SHELL) $(srcdir)/depcomp
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tarball := $(SHELL) -e $(scripts)/tarball
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econfig := $(sysconfdir)/empire/econfig
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schedule := $(sysconfdir)/empire/schedule
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gamedir := $(localstatedir)/empire
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builtindir := $(datadir)/empire/builtin
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einfodir := $(datadir)/empire/info.nr
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ehtmldir := $(datadir)/empire/info.html
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client/w32 := arpa/inet.h netdb.h netinet/in.h sys/time.h sys/socket.h \
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sys/uio.h unistd.h w32io.c w32sockets.c w32types.h
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# Abbreviate make output
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# Run make with a V=1 parameter for full output.
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ifneq ($(origin V),command line)
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V:=
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endif
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# $(call quiet-command COMMAND,ABBREV) runs COMMAND, but prints only ABBREV.
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# Recursively expanded so that variables in COMMAND and ABBREV work.
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ifneq ($V$(findstring s,$(MAKEFLAGS)),)
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quiet-command = $1
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else
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quiet-command = @echo $2 && $1
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endif
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# How to substitute Autoconf output variables
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# Recursively expanded so that $@ and $< work.
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subst.in = sed \
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-e 's?@configure_input\@?$(notdir $@): Generated from $(notdir $<) by make.?g' \
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-e 's?@builtindir\@?$(builtindir)?g' \
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-e 's?@econfig\@?$(econfig)?g' \
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-e 's?@einfodir\@?$(einfodir)?g' \
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-e 's?@gamedir\@?$(gamedir)?g' \
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-e 's/@EMPIREHOST\@/$(EMPIREHOST)/g' \
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-e 's/@EMPIREPORT\@/$(EMPIREPORT)/g'
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# Generated files
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# See `Cleanliness' below
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mk := subjects.mk
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ifeq ($(revctrl),git)
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mk += $(srcdir)/sources.mk
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endif
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# Generated by Autoconf, not distributed:
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ac := config.h config.log config.status info.html info.nr lib stamp-h
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ac += $(basename $(filter %.in, $(src)))
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ac += $(srcdir)/autom4te.cache $(srcdir)/src/client/autom4te.cache
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# distributed by dist-source from $(srcdir):
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acdist := aclocal.m4 config.h.in configure stamp-h.in
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# distributed by dist-client from $(srcdir):
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acdistcli := $(addprefix src/client/, aclocal.m4 config.h.in configure)
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# Object files:
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obj := $(csrc:.c=.o) $(filter %.o, $(ac:.c=.o))
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# Dependencies:
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deps := $(obj:.o=.d)
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# Library archives:
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libs := $(addprefix lib/, libcommon.a libas.a libgen.a libglobal.a)
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# Programs:
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util := $(addprefix src/util/, $(addsuffix $(EXEEXT), empdump empsched fairland files pconfig))
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client := src/client/empire$(EXEEXT)
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server := src/server/emp_server$(EXEEXT)
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# Info subjects:
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tsubj := $(addprefix info/, $(addsuffix .t, $(subjects)))
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ttop := info/TOP.t
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# Formatted info:
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info.nr := $(addprefix info.nr/, $(info))
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info.html := $(addprefix info.html/, $(addsuffix .html, $(info)))
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info.all := $(info.nr) $(info.html) info.ps
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# Conditionally generated files:
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empth_obj := src/lib/empthread/io.o
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empth_lib :=
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ifeq ($(empthread),LWP)
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empth_obj += src/lib/empthread/lwp.o src/lib/empthread/posix.o
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empth_lib += lib/liblwp.a
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endif
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ifeq ($(empthread),POSIX)
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empth_obj += src/lib/empthread/pthread.o src/lib/empthread/posix.o
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endif
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ifeq ($(empthread),Windows)
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empth_obj += src/lib/empthread/ntthread.o
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endif
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ifeq ($(empthread),Windows) # really: W32, regardless of thread package
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libs += lib/libw32.a
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$(client): lib/libw32.a
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endif
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# Cleanliness
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# Each generated file should be in one of the following sets.
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# Removed by clean:
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clean := $(obj) $(deps) $(libs) $(util) $(client) $(server) $(tsubj) \
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$(ttop) $(info.all) $(empth_obj) $(empth_lib)
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# Removed by distclean:
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distclean := $(ac) $(mk)
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# Distributed by dist-source from $(srcdir):
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src_distgen := $(acdist)
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# Distributed by dist-client from $(srcdir)/src/client; removed by distclean:
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cli_distgen := $(acdistcli)
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# Compiler flags
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CPPFLAGS += -I$(srcdir)/include -I.
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ifeq ($(empthread),Windows) # really: W32, regardless of thread package
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CPPFLAGS += -I$(srcdir)/src/lib/w32
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endif
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ifeq ($(have_gcc),yes)
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CFLAGS += -fno-builtin-carg # conflicts with our carg()
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CFLAGS += -fno-common
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CFLAGS += -Wall -W -Wno-unused-parameter -Wpointer-arith \
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-Wstrict-prototypes -Wmissing-prototypes -Wnested-externs \
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-Wredundant-decls
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endif
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$(client): LDLIBS := $(LIBS_client)
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$(server): LDLIBS := $(LIBS_server)
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### Advertized goals
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.PHONY: all
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all: $(util) $(client) $(server) info
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.PHONY: info html
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info: $(info.nr)
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html: $(info.html)
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.PHONY: clean
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clean:
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$(call quiet-command,rm -f $(clean),CLEAN)
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.PHONY: distclean
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distclean: clean
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$(call quiet-command,rm -rf $(distclean) $(cli_distgen),DISTCLEAN)
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.PHONY: install
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install: all installdirs
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$(INSTALL_PROGRAM) $(util) $(server) $(sbindir)
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$(INSTALL_PROGRAM) $(client) $(bindir)
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$(INSTALL) -m 444 $(addprefix $(srcdir)/, $(builtins)) $(builtindir)
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$(INSTALL_DATA) $(info.nr) $(einfodir)
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$(INSTALL_DATA) $(addprefix $(srcdir)/, $(man6)) $(mandir)/man6
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sed -e '1,/^$$/d' -e 's/^/# /g' <$(srcdir)/doc/schedule >$(schedule).dist
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echo >>$(schedule).dist
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echo 'every 10 minutes' >>$(schedule).dist
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[ -e $(schedule) ] || mv $(schedule).dist $(schedule)
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if [ -e $(econfig) ]; then \
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echo "Attempting to update your econfig"; \
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if src/util/pconfig $(econfig) >$(econfig).dist; then \
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if cmp -s $(econfig) $(econfig).dist; then \
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echo "$(econfig) unchanged"; \
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rm $(econfig).dist; \
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fi; \
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else \
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echo "Your $(econfig) doesn't work"; \
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src/util/pconfig >$(econfig).dist; \
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fi; \
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if [ -e $(econfig).dist ]; then \
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echo "Check out $(econfig).dist"; \
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fi; \
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else \
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src/util/pconfig >$(econfig); \
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fi
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.PHONY: installdirs
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installdirs:
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mkdir -p $(sbindir) $(bindir) $(builtindir) $(einfodir) $(mandir)/man6 $(dir $(econfig)) $(gamedir)
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.PHONY: install-html
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install-html: html
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mkdir -p $(ehtmldir)
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$(INSTALL_DATA) $(info.html) $(ehtmldir)
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.PHONY: uninstall
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uninstall:
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rm -f $(addprefix $(sbindir)/, $(notdir $(util) $(server)))
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rm -f $(addprefix $(bindir)/, $(notdir $(client)))
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rm -rf $(builtindir) $(einfodir)
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rm -f $(addprefix $(mandir)/man6/, $(notdir $(man6)))
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@echo "$(dir $(econfig)) and $(gamedir) not removed, you may wish to remove it manually."
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.PHONY: dist
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dist: dist-source dist-client dist-info
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### Implicit rules
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# Compile with dependencies as side effect, i.e. create %.d in
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# addition to %.o.
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ifeq ($(how_to_dep),fast)
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%.o: %.c
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$(call quiet-command,$(COMPILE.c) -MT $@ -MMD -MP -MF $(@:.o=.d) \
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$(OUTPUT_OPTION) $< || { rm -f $(@:.o=.d) $@; false; },CC $@)
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# Why the rm? If gcc's preprocessor chokes, it leaves an empty
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# dependency file behind, and doesn't touch the object file. If an
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# old object file exists, and is newer than the .c file, make will
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# then consider the object file up-to-date.
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endif
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ifeq ($(how_to_dep),depcomp)
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%.o: %.c
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$(call quiet-command,source='$<' object='$@' depfile='$(@:.o=.d)' \
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$(CCDEPMODE) $(depcomp) $(COMPILE.c) $(OUTPUT_OPTION) $<,CC $@)
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endif
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# Cancel the rule to compile %.c straight to %, it interferes with
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# automatic dependency generation
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%: %.c
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%$(EXEEXT): %.o
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$(call quiet-command,$(LINK.o) $^ $(LOADLIBES) $(LDLIBS) -o $@,LINK $@)
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info.nr/%: info/%.t
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$(call quiet-command,$(NROFF) $(filter %.MAC, $^) $< | $(AWK) -f $(filter %/Blank.awk, $^) >$@ && test -s $@,NROFF $@)
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# Pipes in make are a pain. The "test -s" catches obvious errors.
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info.html/%.html: info/%.t
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perl $(filter %.pl, $^) $< >$@
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### Explicit rules
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# Compilation
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$(server): $(filter src/server/% src/lib/commands/% src/lib/player/% src/lib/subs/% src/lib/update/%, $(obj)) $(empth_obj) $(empth_lib) $(libs)
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$(call quiet-command,$(LINK.o) $^ $(LOADLIBES) $(LDLIBS) -o $@,LINK $@)
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$(client): $(filter src/client/%, $(obj)) src/lib/global/version.o
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$(call quiet-command,$(LINK.o) $^ $(LOADLIBES) $(LDLIBS) -o $@,LINK $@)
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$(util): $(libs)
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lib/libas.a: $(filter src/lib/as/%, $(obj))
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lib/libcommon.a: $(filter src/lib/common/%, $(obj))
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lib/libgen.a: $(filter src/lib/gen/%, $(obj))
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lib/libglobal.a: $(filter src/lib/global/%, $(obj))
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lib/liblwp.a: $(filter src/lib/lwp/%, $(obj))
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lib/libw32.a: $(filter src/lib/w32/%, $(obj))
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$(libs) $(empth_lib):
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$(call quiet-command,$(AR) rc $@ $?,AR $@)
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$(RANLIB) $@
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# Info formatting
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# FIXME Remaking subjects doesn't work correctly when info sources get
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# removed or subjects get dropped.
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subjects.mk: info/findsubj.pl $(tsrc)
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perl $(srcdir)/info/findsubj.pl $(filter %.t, $^)
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$(tsubj): info/mksubj.pl
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perl $(srcdir)/info/mksubj.pl $@ $(filter %.t, $^)
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$(ttop): $(tsubj)
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perl $(srcdir)/info/mktop.pl $@ $(filter %.t, $^)
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info.nr/all: $(filter-out info.nr/all, $(info.nr))
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>$@
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(cd info.nr && LC_ALL=C ls -C $(info)) >>$@
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info.html/all.html: info.nr/all info/ls2html.pl
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expand $< | perl $(srcdir)/info/ls2html.pl >$@
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$(info.nr): info/CRT.MAC info/INFO.MAC info/Blank.awk
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$(subjects.html) info.html/TOP.html: info/subj2html.pl
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$(topics.html): info/emp2html.pl
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info.ps: info/TROFF.MAC info/INFO.MAC $(ttop) $(tsubj) $(tsrc)
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groff $^ >$@
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# Distributing
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.PHONY: dist-source
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dist-source: $(src_distgen)
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ifeq ($(revctrl),git)
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echo "src := $(src)" >$(srcdir)/sources.mk
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endif
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$(tarball) $(TARNAME)-$(VERSION) -C $(srcdir) $(src_distgen) $(src) sources.mk
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.PHONY: dist-client
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dist-client: $(cli_distgen)
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$(tarball) $(TARNAME)-client-$(VERSION) \
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-C $(srcdir)/src/client \
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$(notdir $(filter src/client/%, $(src)) $(cli_distgen)) \
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-C $(srcdir)/include proto.h version.h \
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-C $(srcdir)/src/lib/global version.c \
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-C $(srcdir)/src/lib $(addprefix w32/, $(client/w32)) \
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-C $(srcdir)/man empire.6 \
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-C $(srcdir) COPYING INSTALL install-sh
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.PHONY: dist-info
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dist-info: info html
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$(tarball) $(TARNAME)-info-text-$(VERSION) -C info.nr $(info)
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$(tarball) $(TARNAME)-info-html-$(VERSION) -C info.html $(addsuffix .html, $(info))
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ifneq ($(deps),)
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-include $(deps)
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endif
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# Automatic remake of configuration
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# See (autoconf)Automatic Remaking.
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# This requires sufficiently recent versions of autoconf and automake
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$(srcdir)/configure: configure.ac aclocal.m4
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cd $(srcdir) && autoconf
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# autoheader might not change config.h.in, so touch a stamp file.
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$(srcdir)/config.h.in: stamp-h.in
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$(srcdir)/stamp-h.in: configure.ac aclocal.m4
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cd $(srcdir) && autoheader
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touch $@
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$(srcdir)/aclocal.m4: $(filter m4/%.m4, $(src))
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cd $(srcdir) && aclocal -I m4
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# config.status might not change config.h; use the stamp file.
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config.h: stamp-h
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stamp-h: config.h.in config.status
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./config.status config.h stamp-h
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GNUmakefile: GNUmakefile.in config.status
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./config.status $@
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config.status: configure
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./config.status --recheck
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src/lib/global/path.c src/client/ipglob.c: %: %.in GNUmakefile Make.mk
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$(call quiet-command,$(subst.in) <$< >$@,GEN $@)
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# Make files for standalone client distribution
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$(srcdir)/src/client/configure: src/client/configure.ac src/client/aclocal.m4
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cd $(dir $@) && autoconf
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$(srcdir)/src/client/config.h.in: src/client/configure.ac src/client/aclocal.m4
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cd $(dir $@) && autoheader
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touch $@
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$(srcdir)/src/client/aclocal.m4: m4/lib_socket_nsl.m4 m4/my_terminfo.m4 m4/my_windows_api.m4
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cat $^ >$@
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