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# SPDX-License-Identifier: GPL-2.0
PREFIX ?= /usr/local
INSTALL ?= install
INSTALL_PROGRAM ?= $(INSTALL)
INSTALL_DATA ?= $(INSTALL) -m 644
MKDIR_P := mkdir -p

VERSION_STRING = 1.0.1

dss_objects := dss.o str.o file.o exec.o sig.o daemon.o df.o tv.o snap.o ipc.o dss.lsg.o
all: dss dss.1
man: dss.1

DSS_CPPFLAGS := -DVERSION_STRING='"$(VERSION_STRING)"'
DSS_CPPFLAGS += -Wunused-macros

DSS_CFLAGS := -Wno-sign-compare -g -Wunused -Wundef
DSS_CFLAGS += -Wredundant-decls
DSS_CFLAGS += -Os
DSS_CFLAGS += -Wall
DSS_CFLAGS += -Wuninitialized
DSS_CFLAGS += -Wchar-subscripts
DSS_CFLAGS += -Wformat-security
DSS_CFLAGS += -Werror-implicit-function-declaration
DSS_CFLAGS += -Wmissing-format-attribute
DSS_CFLAGS += -Wunused-parameter
DSS_CFLAGS += -Wbad-function-cast
DSS_CFLAGS += -Wshadow

Makefile.deps: $(wildcard *.c *.h)
	$(CC) -MM -MG $(DSS_CPPFLAGS) $(CPPFLAGS) $(DSS_CFLAGS) $(CFLAGS) *.c > $@

-include Makefile.deps

dss: $(dss_objects)
	$(CC) -o $@ $(dss_objects) $(LDFLAGS) -llopsub

%.o: %.c Makefile
	$(CC) -c $(DSS_CPPFLAGS) $(CPPFLAGS) $(DSS_CFLAGS) $(CFLAGS) $<

%.lsg.h: %.suite
	lopsubgen --gen-h=$@ < $<
%.lsg.c: %.suite
	lopsubgen --gen-c=$@ < $<
%.1: %.suite
	lopsubgen --gen-man=$@ --version-string=$(VERSION_STRING) < $<

%.1.html: %.1
	groff -m man -Thtml -P -l -P -r $< | sed -e '1,/^<body>/d; /^<\/body>/,$$d' > $@

clean:
	rm -f *.o dss dss.1 dss.1.html Makefile.deps *~ index.html dss.lsg.h dss.lsg.c

ifneq ($(findstring strip, $(MAKECMDGOALS)),)
       strip_option := -s
endif
bindir := $(DESTDIR)$(PREFIX)/bin
mandir := $(DESTDIR)$(PREFIX)/share/man/man1
install install-strip: all
	$(MKDIR_P) $(bindir) $(mandir)
	$(INSTALL_PROGRAM) $(strip_option) dss $(bindir)
	$(INSTALL_DATA) dss.1 $(mandir)

index.html: dss.1.html index.html.in INSTALL README NEWS
	sed -e '/@README@/,$$d' index.html.in > $@
	markdown README >> $@
	sed -e '1,/@README@/d' -e '/@NEWS@/,$$d' index.html.in >> $@
	markdown NEWS >> $@
	sed -e '1,/@NEWS@/d' -e '/@INSTALL@/,$$d' index.html.in >> $@
	markdown INSTALL >> $@
	sed -e '1,/@INSTALL@/d' -e '/@MAN_PAGE@/,$$d' index.html.in >> $@
	cat dss.1.html >> $@
	sed -e '1,/@MAN_PAGE@/d' index.html.in >> $@

-include Makefile.local