prefix := @prefix@
exec_prefix := @exec_prefix@

BINDIR := @bindir@
VARDIR := /var/paraslash
PKGDATADIR := @datarootdir@/@PACKAGE_NAME@
MANDIR := @datarootdir@/man/man1
PACKAGE_VERSION := @PACKAGE_VERSION@
PACKAGE_STRING := @PACKAGE_STRING@
install_sh := @install_sh@
cmdline_dir := @cmdline_dir@

build_date := $(shell date)
uname_s := $(shell uname -s 2>/dev/null || echo "UNKNOWN_OS")
uname_rs := $(shell uname -rs)
cc_version := $(shell $(CC) --version | head -n 1)
codename := associative expansion

DEBUG_CPPFLAGS += -Wno-sign-compare -g -Wunused -Wundef -W
DEBUG_CPPFLAGS += -Wredundant-decls
# produces false positives
# DEBUG_CPPFLAGS += -Wunreachable-code
# DEBUG_CPPFLAGS += -Wwrite-strings

# invalid option for gcc-3.3.3
# DEBUG_CPPFLAGS += -Wextra
# DEBUG_CPPFLAGS += -Wold-style-definition
# DEBUG_CPPFLAGS += -Wdeclaration-after-statement

# many warnings about trivial stuff
# CPPFLAGS += -Wconversion

ifeq ($(uname_s),Linux)
	CPPFLAGS += -fdata-sections -ffunction-sections
	LDFLAGS += -Wl,--gc-sections
	CPPFLAGS += -Wstrict-prototypes
	CPPFLAGS += -Wshadow
endif
CPPFLAGS += -Os
CPPFLAGS += -Wall
CPPFLAGS += -Wuninitialized
CPPFLAGS += -Wchar-subscripts
CPPFLAGS += -Wformat-security
CPPFLAGS += -DBINDIR='"$(BINDIR)"'
CPPFLAGS += -DBUILD_DATE='"$(build_date)"'
CPPFLAGS += -DUNAME_RS='"$(uname_rs)"'
CPPFLAGS += -DCODENAME='"$(codename)"'
CPPFLAGS += -DCC_VERSION='"$(cc_version)"'
CPPFLAGS += -Werror-implicit-function-declaration
CPPFLAGS += -Wmissing-format-attribute
CPPFLAGS += -Wmissing-noreturn
CPPFLAGS += -Wunused-macros
CPPFLAGS += -Wbad-function-cast
CPPFLAGS += -fno-strict-aliasing
CPPFLAGS += -DMAIN_INPUT_FILE_IS_$(*F)
CPPFLAGS += @SSL_CPPFLAGS@
CPPFLAGS += @ncurses_cppflags@
CPPFLAGS += @arch_cppflags@
CPPFLAGS += -I/usr/local/include
CPPFLAGS += -I$(cmdline_dir)
CPPFLAGS += @osl_cppflags@
CPPFLAGS += -DGIT_VERSION='"$(GIT_VERSION)"'

BINARIES = para_server para_client para_audioc para_recv \
	para_filter para_write para_afh @extra_binaries@
man_binaries := $(BINARIES)
man_pages := $(patsubst %, man/man1/%.1, $(man_binaries))
man_pages_in := $(patsubst %, web/%.man.in.html, $(man_binaries))

ggo_dir := ggo
object_dir := objects
man_dir := man/man1

m4_ggos := afh audioc audiod client filter gui recv server write
all_ggos := $(m4_ggos) dccp_recv oggdec_filter alsa_write oss_write fade http_recv \
	osx_write udp_recv amp_filter compress_filter file_write \
	mp3dec_filter prebuffer_filter
ggo_generated := $(addsuffix .ggo, $(addprefix $(ggo_dir)/,$(m4_ggos)))
cmdline_generated := $(addprefix $(cmdline_dir)/,$(addsuffix .cmdline.c, $(all_ggos)) \
	$(addsuffix .cmdline.h, $(all_ggos)))

autocrap := config.h.in configure
tarball_pfx := @PACKAGE_TARNAME@-$(PACKAGE_VERSION)
tarball_delete := $(addprefix $(tarball_pfx)/,\
	web versions .changelog_before_cvs .changelog_cvs .gitignore\
	$(ggo_dir) skencil)
tarball := @PACKAGE_TARNAME@-$(PACKAGE_VERSION).tar.bz2

# To put more focus on warnings, be less verbose as default
# Use 'make V=1' to see the full commands
ifdef V
	ifeq ("$(origin V)", "command line")
		BUILD_VERBOSE = $(V)
	endif
endif
ifndef BUILD_VERBOSE
	BUILD_VERBOSE = 0
endif
ifeq ($(BUILD_VERBOSE),1)
	Q =
else
	Q = @
endif

.PHONY: all clean distclean maintainer-clean install man tarball\
	.FORCE-GIT-VERSION-FILE
all: $(BINARIES) $(man_pages)
man: $(man_pages)
tarball: $(tarball)

GIT-VERSION-FILE: .FORCE-GIT-VERSION-FILE
	@./GIT-VERSION-GEN GIT-VERSION-FILE
-include GIT-VERSION-FILE
$(BINARIES): GIT-VERSION-FILE

-include $(ggo_dir)/makefile

%_command_list.c: %.cmd
	@[ -z "$(Q)" ] || echo 'GEN $@'
	$(Q) ./command_util.sh c < $< >$@
%_command_list.h: %.cmd
	@[ -z "$(Q)" ] || echo 'GEN $@'
	$(Q) ./command_util.sh h < $< >$@
%_command_list.man: %.cmd
	@[ -z "$(Q)" ] || echo 'GEN $@'
	$(Q) ./command_util.sh man < $< > $@

server_command_lists_ch = server_command_list.c afs_command_list.c \
	server_command_list.h afs_command_list.h
server_command_lists_man = server_command_list.man afs_command_list.man
man/man1/para_server.1: para_server $(server_command_lists_man) | $(man_dir)
	@[ -z "$(Q)" ] || echo 'HELP2MAN $<'
	$(Q) opts="-h --detailed-help -N `for i in $(server_command_lists_man); do printf "%s\n" "-i $$i"; done`"; \
	help2man $$opts ./para_server > $@

man/man1/para_audiod.1: para_audiod audiod_command_list.man | $(man_dir)
	@[ -z "$(Q)" ] || echo 'HELP2MAN $<'
	$(Q) help2man -h --detailed-help -N -i audiod_command_list.man ./para_audiod > $@

man/man1/%.1: % | $(man_dir)
	@[ -z "$(Q)" ] || echo 'HELP2MAN $<'
	$(Q) help2man -h --detailed-help -N ./$< > $@

man/html/%.html: man/man1/%.1
	@[ -z "$(Q)" ] || echo 'MAN2HTML $<'
	$(Q) mkdir -p man/html
	$(Q) man2html $< > $@

web/%.man.in.html: man/man1/%.1
	@[ -z "$(Q)" ] || echo 'MAN2HTML $<'
	$(Q) mkdir -p man/html
	$(Q) man2html $< | sed -e '/^<\/BODY>/,$$d' -e '1,/<\/HEAD><BODY>/d' > $@

$(object_dir):
	mkdir -p $@
$(man_dir):
	mkdir -p $@

$(object_dir)/oggdec_filter.o: oggdec_filter.c | $(object_dir)
	@[ -z "$(Q)" ] || echo 'CC $<'
	$(Q) $(CC) -c -o $@ $(CPPFLAGS) $(DEBUG_CPPFLAGS) @oggvorbis_cppflags@ $<

$(object_dir)/ogg_afh.o: ogg_afh.c | $(object_dir)
	@[ -z "$(Q)" ] || echo 'CC $<'
	$(Q) $(CC) -c -o $@ $(CPPFLAGS) $(DEBUG_CPPFLAGS) @oggvorbis_cppflags@ $<

$(object_dir)/mp3dec_filter.o: mp3dec_filter.c | $(object_dir)
	@[ -z "$(Q)" ] || echo 'CC $<'
	$(Q) $(CC) -c -o $@ $(CPPFLAGS) $(DEBUG_CPPFLAGS) @mad_cppflags@ $<

$(object_dir)/aacdec_filter.o: aacdec_filter.c | $(object_dir)
	@[ -z "$(Q)" ] || echo 'CC $<'
	$(Q) $(CC) -c -o $@ $(CPPFLAGS) $(DEBUG_CPPFLAGS) @faad_cppflags@ $<

$(object_dir)/aac_common.o: aac_common.c | $(object_dir)
	@[ -z "$(Q)" ] || echo 'CC $<'
	$(Q) $(CC) -c -o $@ $(CPPFLAGS) $(DEBUG_CPPFLAGS) @faad_cppflags@ $<

$(object_dir)/aac_afh.o: aac_afh.c | $(object_dir)
	@[ -z "$(Q)" ] || echo 'CC $<'
	$(Q) $(CC) -c -o $@ $(CPPFLAGS) $(DEBUG_CPPFLAGS) @faad_cppflags@ $<

$(object_dir)/%.cmdline.o: $(cmdline_dir)/%.cmdline.c $(cmdline_dir)/%.cmdline.h | $(object_dir)
	@[ -z "$(Q)" ] || echo 'CC $<'
	$(Q) $(CC) -c $(CPPFLAGS) -o $@ $<

$(object_dir)/%.o: %.c | $(object_dir)
	@[ -z "$(Q)" ] || echo 'CC $<'
	$(Q) $(CC) -c -o $@ $(CPPFLAGS) $(DEBUG_CPPFLAGS) $<

$(object_dir)/%.cmdline.d: $(cmdline_dir)/%.cmdline.c | $(object_dir)
	@[ -z "$(Q)" ] || echo 'DEP $<'
	$(Q) ./depend.sh $(object_dir) $(cmdline_dir) $(CPPFLAGS) $< > $@

$(object_dir)/%.d: %.c | $(object_dir)
	@[ -z "$(Q)" ] || echo 'DEP $<'
	$(Q) ./depend.sh $(object_dir) $(cmdline_dir) $(CPPFLAGS) $< > $@

recv_objs := $(addprefix $(object_dir)/, @recv_objs@)
filter_objs := $(addprefix $(object_dir)/, @filter_objs@)
client_objs := $(addprefix $(object_dir)/, @client_objs@)
gui_objs := $(addprefix $(object_dir)/, @gui_objs@)
audiod_objs := $(addprefix $(object_dir)/, @audiod_objs@)
audioc_objs := $(addprefix $(object_dir)/, @audioc_objs@)
fade_objs := $(addprefix $(object_dir)/, @fade_objs@)
server_objs := $(addprefix $(object_dir)/, @server_objs@)
write_objs := $(addprefix $(object_dir)/, @write_objs@)
afh_objs := $(addprefix $(object_dir)/, @afh_objs@)

all_objs := $(recv_objs) $(filter_objs) $(client_objs) $(gui_objs) \
	$(audiod_objs) $(audioc_objs) $(fade_objs) $(server_objs) \
	$(write_objs) $(afh_objs)

ifeq ($(findstring clean, $(MAKECMDGOALS)),)
-include $(all_objs:.o=.d)
endif

para_recv: $(recv_objs)
	@[ -z "$(Q)" ] || echo 'LD $@'
	$(Q) $(CC) $(LDFLAGS) $(recv_objs) -o $@ @recv_ldflags@

para_filter: $(filter_objs)
	@[ -z "$(Q)" ] || echo 'LD $@'
	$(Q) $(CC) $(LDFLAGS) $(filter_objs) -o $@ @filter_ldflags@

para_client: $(client_objs)
	@[ -z "$(Q)" ] || echo 'LD $@'
	$(Q) $(CC) $(LDFLAGS) -o $@ $(client_objs) @client_ldflags@

para_gui: $(gui_objs)
	@[ -z "$(Q)" ] || echo 'LD $@'
	$(Q) $(CC) $(LDFLAGS) -o $@ $(gui_objs) -lncurses

para_audiod: audiod_command_list.c audiod_command_list.h $(audiod_objs)
	@[ -z "$(Q)" ] || echo 'LD $@'
	$(Q) $(CC) $(LDFLAGS) -o $@ $(audiod_objs) @audiod_ldflags@

para_audioc: $(audioc_objs)
	@[ -z "$(Q)" ] || echo 'LD $@'
	$(Q) $(CC) $(LDFLAGS) -o $@ $(audioc_objs) @audioc_ldflags@

para_fade: $(fade_objs)
	@[ -z "$(Q)" ] || echo 'LD $@'
	$(Q) $(CC) $(LDFLAGS) -o $@ $(fade_objs) @fade_ldflags@

para_server: $(server_command_lists_ch) $(server_objs)
	@[ -z "$(Q)" ] || echo 'LD $@'
	$(Q) $(CC) $(LDFLAGS) -o $@ $(server_objs)  @server_ldflags@

para_write: $(write_objs)
	@[ -z "$(Q)" ] || echo 'LD $@'
	$(Q) $(CC) $(LDFLAGS) -o $@ $(write_objs) @write_ldflags@

para_afh: $(afh_objs)
	@[ -z "$(Q)" ] || echo 'LD $@'
	$(Q) $(CC) $(LDFLAGS) -o $@ $(afh_objs) @afh_ldflags@

clean:
	@[ -z "$(Q)" ] || echo 'CLEAN'
	$(Q) rm -f $(BINARIES) $(object_dir)/*.o

clean2: clean
	@[ -z "$(Q)" ] || echo 'CLEAN2'
	$(Q) rm -rf man $(object_dir)
	$(Q) rm -f *_command_list.*

distclean: clean2
	@[ -z "$(Q)" ] || echo 'DISTCLEAN'
	$(Q) rm -f Makefile autoscan.log config.status config.log
	$(Q) rm -rf autom4te.cache aclocal.m4
	$(Q) rm -f GPATH GRTAGS GSYMS GTAGS

maintainer-clean: distclean
	rm -f $(ggo_generated) *.tar.bz2 \
		config.h configure \
		config.h.in skencil/*.pdf skencil/*.ps
	rm -rf web_sync $(cmdline_dir)

install: all man
	mkdir -p $(BINDIR) $(MANDIR)
	$(install_sh) -s -m 755 $(BINARIES) $(BINDIR)
	$(install_sh) -m 644 $(man_pages) $(MANDIR)
	mkdir -p $(VARDIR) >/dev/null 2>&1 || true # not fatal, so don't complain

$(tarball): $(cmdline_generated)
	rm -rf $(tarball_pfx).tar.bz2 $(tarball_pfx)
	git archive --format=tar --prefix=$(tarball_pfx)/ HEAD \
		| tar --delete $(tarball_delete) > $(tarball_pfx).tar
	mkdir -p $(tarball_pfx)/$(cmdline_dir)
	echo $(GIT_VERSION) > $(tarball_pfx)/VERSION
	cp -r $(autocrap) $(tarball_pfx)
	cp -r $(cmdline_generated) $(tarball_pfx)/$(cmdline_dir)
	tar rf $(tarball_pfx).tar $(tarball_pfx)/*
	rm -rf $(tarball_pfx)
	bzip2 -9 $(tarball_pfx).tar
	rm -f $(tarball_pfx).tar
	ls -l $(tarball_pfx).tar.bz2
%.ps: %.sk
	sk2ps $< > $@
%.pdf: %.ps
	ps2pdf - - < $< > $@